Category Archives: QRP

Antennas, Field Reports, Grab And Go, News, Portable, POTA, QRP

POTA Field Report: Pairing the Elecraft KX3 with the AX1 antenna and seeking distant stations

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Although I’m a huge fan of wire antennas in the field, since I started using CW during my Parks On The Air (POTA) activations, I’ve really enjoyed experimenting with compromised portable antennas.

Typically, there’s a trade off with field antennas:

High-performance antennas tend to take more time to install. Some of my highest performance antennas are dipoles, doublets, delta loops, and end fed wire antennas. All of them require support from a tree if I want maximum height off the ground. Some (like the dipole) require multiple supports. While I actually enjoy installing wire antennas in trees, it typically takes me at least 10 minutes to install a wire antenna if it only needs one support and one counterpoise.

Compromised or low-profile antennas may lack performance and efficiency, but are often much quicker and easier to deploy.

In my opinion, field operators should keep both types of antennas in their arsenal because sometimes the site itself will dictate which antenna they use. I’ve activated many sites where wire antennas simply aren’t an option.

That was not the case last Tuesday, however.

Tuttle Educational State Forest (K-4861)

On Tuesday, December 29, 2020, I stopped by Tuttle Educational State Forest (K-4861)–one of my favorite local state parks–for a quick, impromptu activation.

I had no less than four antennas in my car that day and Tuttle is the type of site where I can install pretty much anything: they’ve a spacious picnic area with large tables, tall trees, and parking is close by. Tuttle is the perfect place to deploy not only a large wire antenna, but a large radio if you wish since you don’t have to lug it far from the car.

But en route to Tuttle I decided to take a completely different approach. One of the four antennas I had in the car that day was the Elecraft AX1 antenna.

Without a doubt, the AX1 is the most portable antenna I own. It’s so compact, I can carry it in my pocket if I wish.

When I first purchased the AX1, I was very skeptical and assumed it would only work when “the stars aligned”–days with better-than-average propagation and lots of POTA hunters/chasers looking for me.

The first time I used the AX1 in the field, it impressed me (understatement alert).

The second time, same thing.

In all of my AX1 activations, however, I had only operated on the 40 meter band where the antenna’s footprint looked more like a NVIS antenna than a vertical. Meaning, most of my contacts were in neighboring states like Tennessee, South Carolina, Virginia, and Georgia (typically, those states are in my 40 meter skip zone).

The reason I hadn’t tried 20 or 17 meters with the AX1 is because I would start an activation on the 40 meter band and accumulate enough contacts to achieve a valid activation. Since I’m often pressed for time, I simply didn’t bother configuring the antenna for the higher bands.

Time for that to change!

The question I wanted answered at Tuttle: could the AX1 antenna work “DX” stations? By DX, I mean POTA DX, so distant states and provinces primarily–not necessarily other countries.

Gear:

On the air

I paired the Elecraft KX3 with the AX1 at Tuttle. This was the first time I’d ever tried this particular transceiver/antenna combo.

After setting up, I started on the 20 meter band and called CQ for a few minutes.

The first two stations I worked were in Texas (KF9RX and K5RX).

The third station (W6LEN) was in California.

California!?!

Honestly, it was/is hard for me to fathom how in the world 10 watts into a tabletop telescoping whip antenna could work a station exactly 2,083 miles (3,352 km)–and three time zones away–from my picnic table. I’m sure W6LEN has a great antenna on the other end, but I bet he would be surprised to learn that my 10 watt signal was being radiated by such a wee antenna.

 

 

I then worked stations in Florida (K2WO), Minnesota (N0UR), and New Hampshire (W2NR) and decided to move to 17 meters.

On 17 meters I worked W2NR in New Hampshire once again.

I should note here that each time you work a station on a different band or with a different mode, it counts as a separate contact in POTA. In other words, my contacts with W2NR on 20 meters and 17 meters counts as two logged contacts toward my overall QSO count. I’m very appreciative of hunters who go out of their way to work me on different bands and modes: those extra contacts help me achieve a valid activation in short order.

I then moved to 40 meters and worked stations from Tennessee, West Virginia, Ohio, and Michigan.

Video

Here’s a video of the entire activation. It’s a long video as it starts at set-up and continues until my last contact. There are no edits in this video–it’s a real-time, real-life deal and contains all of my bloopers:

Note that in the video I had the KX3’s volume maxed out so that it could be picked up by my iPhone microphone. The KX3’s wee internal speaker was vibrating the chassis ever so slightly. On the 40 meter band, it resonated enough that it moved the encoder slightly. Next time, I’ll plan to bring a portable external speaker (if you have any suggestions of good ones, let me know).

And here’s a QSOmap of the activation:

Click to enlarge.

Bioenno 3aH LiFePo battery

I should also add that I’m very pleased with my new Bioenno 3aH LiFePo 12V battery. You can see it in the photo above–it’s slim, lightweight, and very compact.

I purchased it during Bioenno’s Black Friday sale. I was a little concerned it might not have enough capacity to carry me through multiple activations–my other LiFePo batteries re 4.5 and 15 aH–but that does not seem to be the case at all! Not only did it provide nearly an hour of intense use on this activation, but it also powered three activations the previous day–all four activations on one charge! Brilliant!

Radio magic

As I mentioned in a previous post, this was one of those activations that reminded me of the magic of low-power radio. It was incredibly fun!

For all of those phone/SSB operators out there, I will eventually see how successful I can be doing a phone-only activation with the AX1 antenna. I’ll plan to make a video of it as well. I’ll need to plan this for a day when I have more time to spend on the air and at a site where I know I’ll have internet access to spot myself to the POTA network.  SSB isn’t quite as effective as CW when operating with a setup this modest. Still–it can be done! It just requires a little more patience. Please let me know if this sort of thing would interest you.

Until then, Happy New Year and 73s to everyone!

Cheers,

Thomas (K4SWL)

Homebrew, Kits, New Products, News, QRP

Upgrading my Yaesu FT-817 with G7UHN’s rev2 Buddy board

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This article was originally published on the  SWLing Post.
Last August, SWLing Post contributor, Andy (G7UHN), shared his homebrew project with us: a genius companion control display for the venerable Yaesu FT-817 general coverage QRP transceiver.

Andy’s article caused me (yes, I blame him) to wax nostalgic about the popular FT-817 transceiver. You see, I owned one of the first production models of the FT-817 in 2001 when I lived in the UK.

At the time, there was nothing like it on the market: a very portable and efficient HF, VHF, UHF, multi-mode general coverage QRP transceiver…all for $670 US.

In 2001? Yeah, Yaesu knocked it out of the ballpark!

In fact, they knocked it out of the ballpark so hard, the radio is still in production two decades later and in demand under the model FT-818.

I sold my FT-817 in 2008 to raise funds for the purchase of an Elecraft KX1, if memory serves. My reasoning? The one thing I disliked about my FT-817 was its tiny front-facing display. When combined with the embedded menus and lack of controls, it could get frustrating at home and in the field.

I mentioned in a previous post that I purchased a used FT-817ND from my buddy, Don, in October, 2020. I do blame Andy for this purchase. Indeed, I hereby declare him an FT-817 enabler!

FT-817 Buddy board

When I told Andy about my ‘817ND purchase, he asked if I’d like to help him test the FT-817 Buddy board versions. How could I refuse?

Andy sent me a prototype of his Version 2 Buddy board which arrived in late November. I had to source out a few bits (an Arduino board, Nokia display, and multi-conductor CAT cable). Andy kindly pre-populated all of the SMD components so I only needed to solder the Arduino board and configure/solder the cable. I did take a lot of care preparing and soldering the cable, making sure there was no unintentional short between the voltage and ground conductors.

Overall, I found the construction and programming pretty straight-forward. It helped that Andy did a remote session with me during the programming process (thanks, OM!). Andy is doing an amazing job with the documentation.

I do love how the board makes it easier to read the frequency and have direct access to important functions without digging through embedded menus. While there’s nothing stopping you from changing the program to suit you, Andy’s done a brilliant job with this since he’s an experienced FT-817 user.

The Nokia display is very well backlit, high contrast, and easy very to read.

“Resistance is futile”

I mentioned on Twitter that, with the backlight on, the FT-817 Buddy makes my ‘817ND look like it was recently assimilated by The Borg.

Don’t tell any Star Trek captains, but I’m good with that.

Andy has a rev3 board in the works and it sports something that will be a game-changer for me in the field: K1EL’s keyer chip!

For more information about the FT-817 Buddy, check out Andy’s website.

Of course, we’ll keep you updated here as well. Many thanks to Andy for taking this project to the next level. No doubt a lot of FT-817 users will benefit from this brilliant project!

Morse Code, News, Portable, POTA, QRP

The magic of low-power amateur radio never dies

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I’ll keep this post short and sweet because I plan to write up a full field report with video sometime next week.

Tuesday (December 29, 2020), I fit in an impromptu Parks On The Air (POTA) activation in the afternoon. The station was very modest: basically, my Elecraft KX3 paired with the super compact Elecraft AX1 antenna.

Here’s what I did with 10 watts and a wee telescoping whip during mediocre propagation:

I got a huge thrill out of this.

Honestly, this hobby never gets old and I honestly believe there’s magic in QRP!

Here’s wishing everyone a safe, healthy and happy New Year!

 

Field Reports, News, Portable, POTA, QRP

POTA Field Report: Three park run with two transceivers & two antennas

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Yesterday, I started the day hoping I might fit in one afternoon activation at a local park. In the morning, however, my schedule opened up and I found I actually had a window of about six hours to play radio!

Instead of hitting a local park, I considered driving to parks I’d been planning to activate for months.

I may have mentioned before that, earlier this year, I created a spreadsheet where I listed of all of the parks I planned to activate in 2020.

From earlier this year–many of the parks listed as “rare” are much less so now!

Each park entry had the park name, POTA designator, priority (high/medium/low), difficulty level for access, and a link to the geo coordinates of where I could park and possibly hike to the site. I spent hours putting that list together as finding park access–especially for game lands–isn’t always easy.

Yesterday morning, I looked at that sheet and decided to knock two, or possibly three off the list.

I had already plotted the park run, driving to Perkins State Game Land (K-6935) near Mocksville, then to the NC Transportation Museum State Historic Site (K-6847) in Spencer, and finally Second Creek Game Land (K-6950) in Mt Ulla.

The circuit required about three hours of driving. Here’s the map:
When I plan an activation run, I factor in the travel time, add ten minutes extra if it’s my first time at the site (assuming I’ll need to find a spot to operate) and then assume at least one hour to deploy my gear, work at least ten stations, and pack up.

Using this formula, I’d need to allow three hours for driving, plus an additional three hours of operating time, plus a few minutes to sort out an operating spot at Perkins Game Land. That would total six hours and some change.

Knowing things don’t always go to plan, I decided I’d quickly omit the NC Transportation museum if I was running behind after the Perkins activation. In fact, I felt like the NC Transportation Museum  might be out of reach, so I didn’t even schedule the activation on the POTA site.

Perkins State Game Land (K-6935)

I arrived at K-6935 a little before noon (EST).

Since this is the week after Christmas, I had a hunch game lands could be quite busy with folks trying out their new hunting gear and I was correct.  I passed by the first small parking area and it was packed with vehicles, so I drove on to the second parking area I identified via Google Maps satellite view.

The second parking area was also busy, but was larger. There was just enough room for my car to park between two trucks.

Gear:

I donned my blaze orange vest–a necessity at any game land–and walked outside to asses the site. In short? It was a tough one. There were no easy trees to use for antenna support and I simply didn’t have the space. I knew folks would walk through the area where I set up my antenna so a wire antenna would have acted a lot like a spider’s web.

I pulled out my trust Chameleon MPAS Lite vertical antenna and deployed it next to the car. I rolled out the counterpoise into the woods paralleling a footpath so no one would trip on it.

Since I had no room to set up outside, I operated from the backseat of my car–it was actually very comfortable.

I pulled out the Elecraft KX3 and hooked it directly to the MPAS Lite–it easily tuned the antenna on both 40 meters, where I started, then later 20 meters.

I very quickly logged 13 stations on 40 and 20 meters.

While on the air, a number of other hunters discovered the parking area was nearly full–some turned around and left. I decided to cut the activation with 13 logged and skipped doing any SSB work. I accomplished what I set out to do here, was short on time, and I wasn’t actually using the game land for its intended purpose. Better to give others the parking space!

I quickly packed up and started the 30 minute drive to my next site.

NC Transportation Museum State Historic Site (K-6847)

The Cameleon MPAS Lite

I knew what to expect at the NC Transportation Museum because I’ve visited the museum in the past and, earlier this year, scoped out a spot to activate the park in their overflow parking area.

The museum is closed on Mondays. In general, I avoid activating parks and sites that are closed. I never want to give anyone at the park a bad impression of POTA activators.

In this case, however, the overflow parking area is wide open even when the park is closed and there was no one at the site. I felt very comfortable setting up the CHA MPAS Lite which is a pretty stealthy antenna. Indeed, as I was setting up, I’m guessing it was a museum employee that passed by in their car and waved–no doubt, POTA activators are a familiar site!

Gear:

I set up my portable table behind the car under the hatchback so I took up the least amount of space.

I used the table primarily so I could shoot one of my real-time, real-life videos of a park activation. Readers have been asking for more of these and I’m happy to make them if they’re helpful to even one new ham.

In the end, I logged 13 stations and didn’t try to work more because I was still on track to activate one more park. I didn’t feel bad about only working 13 stations, because this site has been activated many times in the past–in other words, it wasn’t exactly rare.

Here’s my video of the activation:

Second Creek Game Land (K-6950)

The Cameleon MPAS 2.0

I arrived at K-6950, the final park, around 14:50 EST (19:50 UTC).

Only one vehicle car was in the parking area, so it was easy to pick out a spot to set up.

Gear:

Again, since I planned to make a video of the activation, I set up my portable table.

I decided en route to the site, that I’d use the Chameleon MPAS 2.0 vertical at Second Creek. Although I’ve used the more compact Chameleon MPAS Lite at a number of parks–including the two previous parks–I had a great spot to deploy the taller MPAS 2.0.

As with the MPAS Lite, deployment was very quick. the MPAS 2.0 vertical is made up of folding pole sections–much like tent poles. As with all Chameleon gear I’ve ever used, the quality is military grade. Full stop.

I started calling CQ on the 20 meter band in CW this time. Within a minute or so I logged my first contact, followed by five more.

I then moved to the 40 meter band and logged twelve more stations in twelve minutes.

I decided to then give SSB a go as well and logged two more stations for a total of twenty stations logged.

Here’s a video of the activation:

I would like to have stayed longer at Second Creek and even used the MPAS 2.0 on 80 meters, but frankly I was pushing my time limit to the edge.

All in all, it was a brilliant three park run!

These days, it’s difficult to pack more than three parks in my available time–in fact, I think this was the first three park run I’d done in months. During National Parks On The Air (NPOTA) in 2016, I’d been known to pack four or five parks in a day–it was so much fun.

Here’s my QSOmap for the day (click to enlarge):

Getting outside on such a beautiful day, driving through some picturesque rural parts of my home state, and playing radio? Yeah, that’s always going to be a formula for some amazing fun!

Antenna Tuners, Antennas, News, Portable, QRP

Could the Icom AH-705 be used as a permanently-mounted remote ATU? Sure, but I believe there are better options.

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Icom uses this photo to demonstrate one of the ways the AH-705 ATU can be mounted for remote operation.

Many thanks to Bruce (W0MBT) who writes:

Hey Thomas,

After many years of inactivity, the combo of this blog, the IC-705, and Covid shutting down all the other fun things I like to do has finally got me somewhat active again. I agree with you that [the Icom AH-705] seems pretty large and expensive for a portable tuner, given the available alternatives. To me, the most interesting possible application is in a semi-permanent outdoor installation.

Currently, my setup is an EmTech ZM-2 installed in a watertight toolbox on my fifth floor balcony, grounded into the metal siding of my building, with a stealth radiating wire tossed onto a conveniently-located tree. It seems to get out pretty well, but QSYing across bands is a pain, and not really practical when it’s raining, which happens a lot in Seattle. I could replace that whole setup with an AH-705 stuck to the siding with double-sided tape.

My questions (and I realize you won’t yet have answers) are:

* How long will it run on AAs? This will determine whether I need to run 12V out to my balcony.
* What’s the maximum control cable run? In my current apartment layout, I’m looking at about 25′.

Bruce
W0MBT

Hi, Bruce,

First of all, I’m so glad to hear you’ve gotten back on the air and honored to hear this blog might have contributed to that a bit! Based on your current setup, it’s obvious that you’ll go out of your way to play radio. Anyone who’s willing to manually adjust a remote ATU each time they wish to hop around the band is dedicated to their radio play!

Since the AH-705 hasn’t been released yet at time of posting, I really know nothing about the AH-705 other than what I’ve read in the specs. I’m not sure how long a control cable could be nor how long AA batteries would last. We won’t know this until the AH-705 is tested.

If I were in your shoes, though, I wouldn’t wait on the AH-705.

I can think of  at least two other options I consider to be better choices for a permanently-mounted remote antenna tuners:

1.) Assemble a remote tuner box

So at my QTH, like yours, I rely on an external, remotely controlled ATU. My shack is located on the first floor of my house. There’s a carport with a metal roof behind my shack. Since we designed and built this house. we installed conduit in the walls so that I could run cable from my shack to an antenna switching and tuning point mounted outside.

It’s built around an LDG Z11 Pro which is not marketed as a remote ATU. The Z11 Pro is mounted in a (rather ugly but effective) weather-proof box a friend gave me–I think the box was originally  used in a remote sensing application. It actually has some penetration points on the side I was able to use.

In 2011, when I installed this ATU, I found an old sealed lead acid battery to power the Z11 Pro knowing the Z11 actually requires very little in terms of power. I had planned to bring the battery indoors and occasionally recharge it, but I also happened to have a 5 watt solar panel and Micro M+ charge controller, so I put them to use charging the remote ATU battery.

From inside my shack, I bypass all internal ATUs in my transceivers and only use my remote Z11 Pro.

The Z11 Pro is RF-Sensing, so as I move across the band, it automatically finds matches and keeps the SWR well within an acceptable range (I monitor it indoors with an SWR and Power meter, of course).

This entire system costs less than the $350 projected cost of the AH-705 and doesn’t require a control cable. The best part is it can be used with *any* radio and can handle 125 watts.

I used the Z11 Pro because I already owned it, but there are less expensive, smaller LDG tuners that could be used. You wouldn’t need to have solar charging as you could simply replace an external battery from time to time. These tuners are super efficient–so efficient, the sealed lead acid battery I installed in 2011 was nearly dead back then, yet it has provided enough voltage via my small PV panel to reliably power the Z11 Pro over 10 years of seasonal temperature swings.

But there’s still an easier and possibly cheaper solution.

2.) Buy a proper remote ATU

When I originally built my remote tuning system, there were really no affordable options commercially available. I believe SGC and Icom had remote tuners but they were very pricey.

Since then, LDG introduced the RT100 remote antenna tuner.

The RT100 costs $250 US and is designed to be used outdoors permanently-mounted. You need no outdoor power source because the ATU is powered from a Bias T 12V source via the same coax cable between your transceiver and the ATU. Makes for a neat, tidy package outdoors.

Again, this ATU–unlike the AH-705–can handle up to 125 watts and work with any transceiver in your shack.

Indeed, I’ve been thinking about grabbing an RT100 for use with another outdoor antenna I plan to build!

Also check out the MFJ-926B for $330 US. If you’re like me, you may never operate north of 10-20 watts, but some may appreciate the 200 watt power handling of the MFJ.

Summary

To get back to your original question, I suppose what I’m trying to say here is the Icom AH-705 is a portable antenna tuner that can be put into service as a remote antenna tuner. It can do both jobs.

To me, though, it makes more sense to split these two applications: install a permanent remote ATU–that works with any transceiver–and also invest in a quality portable ATU for field work.

What are the major drawbacks of the AH-705 compared with a proper, dedicated remote ATU?

  • You’ll need to change AA batteries in the AH-705 on occasion or design a 12V source that can easily be recharged.
  • The AH-705 may (we don’t know yet) only work with the IC-705 and possibly similar Icom models. The LDG and MFJ ATU models above work with any radio.
  • The maximum power handling of the AH-705 is 10 watts–if you use other transceivers (if that is even possible) you’ll have to be extremely careful of your power settings, else fry the AH-705.
  • The AH-705 is pricey if the actual retail price ends up being near the projected $350 mark. Hopefully, it’ll be less than this.
  • The AH-705 will require a control cable. The options above are RF-sensing and do not.

My advice?

Build or buy a permanent remote tuner and hit the parks and summits with the ZM-2!

Since you already have the Emtech ZM-2, you’ve got a fabulous manual portable ATU. I use my ZM-2 in the field all the time (see photo above). Some folks prefer an automatic tuner for ease of use, but I’m guessing at this point, you’re an expert ZM-2 “tuner upper!”

Later, if you want to add an automatic portable ATU to your field kit, consider the Elecraft T1, the Icom AH-705, or an LDG model.

Readers, feel free to comment with your suggestions as well. I’m sure there are a number of options I haven’t considered!

Announcements, News, Portable, Product Announcements, QRP

Icom publishes AH-705 antenna tuner details

12 Comments

Many thanks to Rob Sherwood (NC0B) who notes that Icom has published details regarding their new AH-705 antenna tuner which is designed to pair directly with the Icom IC-705 QRP transceiver.

Many Icom IC-705 owners have been waiting to learn more about the AH-705 before purchasing a dedicated portable ATU for their IC-705. Some of these details may help potential customers make a purchase decision.

Key specifications and features per Icom:

 

  • Covers the 1.8 MHz to 50 MHz bands

30 m, 98.4 ft or longer antenna: 1.8 – 54 MHz, 7 m, 23 ft or longer antenna: 3.5 – 54 MHz
* Depending on operating conditions or environments, the tuner may not be able to tune the antenna.

  • SO-239 antenna connector for 50 Ω antenna such as dipole or Yagi
  • “Terminal connector”, binding post socket adapter supplied for a long wire antenna

  • 2-way power sources using alkaline batteries (2 x AA cells) or external 13.8 V DC*
    * 13.8 V DC should be taken directly from an external power supply, not through the IC-705.
  • IP54 dust-protection and water resistance construction*
    * The connectors should be covered with an adhesive tape or a jack cover to prevent water seeping into the connection.
  • Full automatic tuning, just push the [TUNER] button on the IC-705
  • Latching relays used for saving power consumption
  • 190 × 105 × 40 mm; 7.5 × 4.1 × 1.6 in, 450 g; 15.8 oz* compact design
    * Battery cells are not included.
  • 45 tuner memories

Of course, I don’t have an AH-705 in hand to test yet, so there’s no way I can comment on performance.

Still, I can’t turn of the reviewer inside so I feel I can make some superficial comments assuming the specs don’t change.

Potential positives?

  • Complete integration with the IC-705
  • Could (potentially–?) be permanently mounted outdoors at the antenna feed point as a dedicated remote tuner
  • IP54 dust and water resistant
  • Power from internal batteries and an external DC source
  • It’s an Icom product, so I would expect excellent overall quality

Potential negatives?

  • Maximum wattage is only 10W, which I suppose is okay if you never put an amplifier between the IC-705 and the AH-705
  • Based on Icom specs, the AH-705 is larger than other portable ATUs at 7.5 × 4.1 × 1.6 inches. For example:
  • Some have noted pricing around $350 US price–that’s a premium for a portable ATU considering the Elecraft T1 is $180 assembled and many LDG models are less than $200. Of course, none of those ATUs have an IP54 rating, either.
  • Speculation here, but the AH-705 might only work with the IC-705 or Icom radios with similar ATU commands. One original pre-production prototype image of the AH-705 shows a power switch; the latest images do not. Like the mAT-705Plus, I’m not sure if the AH-705 can be turned on in order to tune only via RF sensing without essentially modifying a control cable to trick the ATU into powering up.

I was a little surprised to see that the AH-705 “only” has 45 tuner memories. In truth, I never really pay attention to this spec because I’m primarily a field operator. My radio sessions are only an hour or two long and I routinely pair my transceivers with a wide variety of antennas, so a portable ATU never has a chance to develop a complex tuner memory map for any given antenna. But as a reviewer, I try to step in other operators’ shoes so I see where this could be a slight negative for those who plan to use the AH-705 at home and connected to only one antenna. As a point of comparison, the mAT-705Plus has 16,000 tuner memories. Still, memories only help shave off a bit of the auto-tuning time. This would never have an impact on my purchase decision.

Biggest positive for me? IP54 rating

Since the AH-705 is designed to be dust and weather resistant,  it could be mounted at the antenna feed point. At home, perhaps it could act like an externally-mounted, remotely-controlled antenna tuner. I’m not sure what the maximum length of the control cable could be, but Icom Japan even lists a 16 foot control cable as an accessory. Of course, you would still need to follow Icom’s guidance about protecting the antenna, transmitter and control cable connection points.

Biggest negative for me? The size.

If the AH-705 specs are correct, it’s a little surprising Icom designed a portable ATU that’s this large. As you can see in the image above, it easily fits in the LC-192, but frankly since I’ve been an Elecraft T1 tuner user, I’ll notice that the AH-705 is 3.1″ longer, 1.6″ wider, and .7″ taller than the T1. It will certainly take up more backpack space.

Of course, unless I build an IC-705 control interface for the Elecraft T1, I can’t directly pair it with the IC-705 like I could with the AH-705. That said? I personally prefer pressing a tune button on the T1 and sending “QRL?” instead of hitting the PTT or CW key and allowing the IC-705 to kick in a continuous tune cycle for a few seconds. You might have noticed in some of my videos that when I tune to a new CW frequency, I’ll listen for activity, then tap the TUNE button on the T1 and send “QRL?” or “QRL de K4SWL”. By the time I’ve sent that string, the T1 has typically already found a match.

How will it perform?

I’ve got to assume the AH-705 will perform well. Icom tends to give their products thorough QC before shipping them to customers. I don’t anticipate any issues with the AH-705 as I did with the original maT-705, for example.

I’ll plan to test the AH-705 after it’s available.

For more information about the AH-705, check out the product page on Icom Japan’s website.

Field Reports, News, Portable, POTA, QRP

POTA Field Report: Lake Norman State Park (K-2740) December 14, 2020

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Monday afternoon (December 14, 2020), after completing a long to-do list of errands, I found myself with a chunk of free time in the late afternoon. Of course, I like to fill free time with radio time, so I packed the car and headed to one of my favorite spots: Lake Norman State Park (K-2740).

I love Lake Norman because it’s only a 35 minute drive from my parents’ house (where I was that Monday) and it’s nearly ideal for POTA because they’ve a number of picnic tables widely spaced, and lots of tall trees–a perfect spot for wire antennas. It’s also a quiet location and has good “POTA Mojo”–meaning, I’ve never had difficulty racking up contacts there.

Gear:

I was the only person at the picnic area of Lake Norman that afternoon. No surprise as it was after 3:00 PM local and temps were on a fast downward trend after a front moved through earlier in the day.

You may be able to see the Emcomm III hanging in the tree.

I used my arborist throw line and deployed the Emcomm III Portable antenna with ease.

On the Air

I hopped on the air around 21:30 UTC and started calling CQ POTA. The Reverse Beacon Network (RBN) spotted me and the POTA website auto-spotted me under a minute. Within ten minutes, I logged 8 contacts on 40M.

I then moved to 20 meters and worked an additional 5 contacts within 15 minutes.

Since I had worked a total of 13 stations, I had three more than needed for a valid POTA activation.

Since I was using the amazing Emcomm III Portable random wire antenna, I decided to move to 160M just to see if anyone work work me on the “top band.”

To be clear, 160 is one of the least active bands in POTA for obvious reasons: few ops care to deploy an antenna that can tune up on 160M, and few POTA hunters have an antenna at home to work the Top Band. Although it’s not as efficient as a resonant 160M antenna, the Elecraft T1 and mAT-705 easily tune it and get a great match.

I called CQ for a few minutes on 1810 kHz in CW and N4EX replied. Woo hoo! My first 160M POTA contact as an activator.

I then moved up to the phone QRP calling frequency of 1910 kHz and called CQ for about 10 minutes. No dice. Since I spotted myself, about two stations attempted to make contact, but unfortunately, my five watts just couldn’t be heard.

I checked the time at this point and it was 22:30 UTC. The sun was setting over Lake Norman, so I started packing up.

It was then received a text from my buddy Mike (K8RAT). The message read, “80M?”

I thought it might be fun to work Mike on 80M, so I re-connected the antenna and tuned up on 3538 kHz.

I think I called CQ once, and Mike replied with a strong signal. We had a nice exchange and when we sent our 73s, I heard a few stations calling me. Of course…the RBN picked up my CQ for Mike and the POTA site spotted me.

To be clear: it’s next to impossible for me to cut an activation short when I have hunters actively calling me, so I started replying.

Getting late…

Turns out, 80 meters was on fire. In 15 minutes, I logged 17 more stations–from Florida to Ontario–with 5 watts.

Next thing I know, it’s dark. Like, pitch dark…

My iPhone struggled to make this photo look brighter without the flash engaged.

Side note: someday, remind me to write a post about how one of my earliest National Parks On The Air (NPOTA) activations carried on until it was pitch dark outside and how that one activation forever changed how I pack my gear. In short: if you’re in the field and you aren’t intimately familiar with your gear and how its packed–even if you have a headlamp–there’s a good likelihood you’ll leave something behind.

It then hit me that Lake Norman State Park closes at sunset in the winter.  Doh!

Friendly park rangers

I finished my last exchange (with W3KC) and sent QRT despite a few others still calling me.

 

As I quickly powered down the IC-705, I noticed a truck pass by slowly on the road behind me. He drove to the end of the road then turned around and stopped behind me. I knew it was a park ranger doing final rounds.

He walked down to my table with flashlight in hand and I greeted him with an apology as I quickly packed up my gear. He was incredibly kind and encouraged me to take my time. He also saved me a trip to the car to grab my headlamp by illuminating the area with his Maglite flashlight/torch.

The park ranger asked a number of questions about ham radio, POTA, and the equipment I was using as I packed up. He told me he’s always found it fascinating and had met other radio amateurs at the park doing activations. I gave him my contact info and I hope he considers checking out the world of radio.

Because I’m meticulous about how I pack (again, lessons learned from the past) I had no issues in low light and left nothing behind.

I drove out of the park at exactly 6:00PM which is the park’s closing time. I was happy, at least, that I hadn’t delayed their closing!

All-in-all, it was a very fun activation–so much fun, I lost track of time. I logged 30 stations all over North America on four bands with 5 watts.

Have you ever found yourself operating and packing up in the dark? Any stories to share or advice? Please comment!

News, QRP

New G-QRP Club YouTube Channel

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(Source: Southgate ARC)

New YouTube channel dedicated to low power ham radio

The G-QRP club have launched a YouTube channel for those interested in low power amateur radio operation

An initial batch of 18 videos have been uploaded featuring presentations delivered to the 2020 Virtual G-QRP Convention.

See the new G-QRP YouTube channel at
https://youtube.com/channel/UClhe-ybLZzpnJh80VmFuS-A/videos

Field Reports, News, POTA, QRP

POTA Field Report: Ernest F. Hollings ACE Basin National Wildlife Refuge (K-0520)

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One of the great things about Parks On The Air (POTA) is it provides a brilliant excuse to discover public lands that might otherwise go unnoticed while on vacation.

Ernest F. Hollings ACE Basin National Wildlife Refuge is a case in point.

I’m currently taking a little vacation time with the family on the coast of South Carolina and Saturday, December 5, 2020, we decided to explore a nearby park and activate it. I happened upon the ACE Basin Project on the POTA website and thought it sounded intriguing. Our plan was to go to the park, perform a quick activation, perhaps hike a bit, then go to the coast for a beach walk.

I’ve been to wildlife management areas and game lands that have been very basic perhaps only featuring a parking area and a trail or two– which is fine, frankly.

But sometimes you happen upon gems like the Ernest F. Hollings ACE Basin National Wildlife Refuge that are so much more!

Let’s activate!

Our walk to the main house and visitor center.

The visitor’s center and the main gates to the house were closed, but the grounds were still open to the public. We parked in the area just outside the main gates.

Gear:

Since I had no idea what to expect on site, I grabbed my Red Oxx Micro Manager field kit that had the Elecraft KX2 and AX1 antenna packed inside.

On this vacation, space in the family car was extremely limited, so I only packed the AX1 and the Chameleon CHA MPAS Lite vertical antennas to pair with the KX2. I left the CHA MPAS Lite vertical in the car assuming I might actually perform the activation back at the parking area once we walked around the main house.

The KX2/AX1 travel kit is incredibly portable and lightweight. That’s the whole kit in the bag in the photo above.

On the air

Turns out, we pretty much had the entire campus to ourselves that day and, as a bonus, there was even an excellent picnic area where I could easily set up the KX2 and AX1 antenna.

I hopped on the air around noon and started calling CQ. I had no internet access on site, but could tell the Reverse Beacon Network and POTA spots page had auto-spotted me because I worked about three stations on CW within the first few minutes.

I started on 40 meters CW, but quickly moved over to phone before converting the AX1 antenna for 20 and 17 meters.

A friend spotted me on the POTA site and I worked a couple more stations on SSB.

After only 15 or 20 minutes on the air, my wife suggested we stay put for a couple of hours. We were all loving the gorgeous weather, wildlife, and beautiful scenery by the pond. She asked our daughters to hike back to the car and grab our picnic lunch. I decided to accompany them and grab the CHA MPAS Lite vertical knowing it would be a much more effective antenna for a longer activation.

The hike was about 30 minutes round-trip (that’s a long plantation driveway!).

After I got back to the site, I installed the MPAS Lite which took all of four minutes.  A friend, once again, spotted me on the POTA network and I started calling CQ on 20 meters phone.

I quickly worked stations from Texas, Missouri, Indiana, Massachusetts,  New Hampshire, and Ontario.

I wanted to hop back to CW mode though, because I discovered K-0520 (this park) had never been activated in CW before and wanted to give CW hunters a chance to put it in the logs.

I worked stations across the US on 20 meters CW from Tennessee to Kansas, from Arizona, to Alaska, and from Iowa to Ontario. Major fun!

I also decided to head further up the band and work AD1C in Colorado on 15 meters (there were no takers on 12 and 10 meters, but I tried–!).

I started around 17:00 UTC and wrapped things up around 19:15 UTC with 34 logged.  That may seem like a low QSO count for over two hours, but a good 45-50 minutes of that time I was off air while hiking back to the car and grabbing the MPAS Lite, setting it up, and enjoying a quick picnic with the family.

All in all it was a very memorable day at the ACE Basic WMA. If you’re ever in the low country of South Carolina, I highly recommend a visit. It’s a stunning site with lots of flora, fauna, hikes, and, of course, a great spot for a little field radio fun!

Note: If I worked you during this activation, it may not show up on the POTA website until I’m home from vacation and can create an ADIF file to submit the logs!

Field Reports, News, POTA, QRP

POTA Field Report: Zebulon B. Vance Birthplace (K-6856)

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On Sunday, November 29, 2020, I decided to return to one of my family’s favorite local POTA sites: the Zebulon B. Vance Birthplace.

On Field Day 2020, I activated this park and learned later that it was an ATNO (All-Time New One). It was very hard to believe because the site is nearly ideal for a POTA activation.

The Vance Birthplace is my go-to site when I want to do some field radio work without travelling too far and when the weather is marginal. The site has a wonderful large covered picnic area we typically have all to ourselves, and I can set up knowing that if it rains it won’t stop the activation.

When we arrived at the Vance Birthplace on Sunday, November 29, we were the only guests at the park. Even though the visitor’s center is closed on Sundays, the park is still open to the public.

Gear:

On this particular activation, I decided to give my Elecraft KX3 some field time. I think this was its first field outing in several months. I decided to pair it with the Chameleon Emcomm III Portable antenna to make the most of multi-band operation. I knew in advance that this activation would also coincide with the CQ Worldwide CW contest and I wanted some frequency agility–the Emcomm III Portable covers 160-6 with a good ATU.

On the Air

After deploying the CHA Emcomm III Portable random wire antenna in a similar configuration as I have in the past (see image above), I tuned to 17M CW to avoid the contest crowd.


I worked a few stations but, frankly, it was slow going. For POTA, I’ve found that 18 meters isn’t the most productive band at this point in the solar cycle, but a number of other POTA ops were there too as they didn’t want to compete with blowtorch contest stations on 40 and 20 meters.

I eventually moved down to 30 meters and worked a few station as well.

I knew in advance I’d want to log some stations in SSB, so I brought the Heil Proset-K2 Boom Headset along for the ride. I can’t recommend this boom headset enough if you own an Elecraft KX3 or KX2. I believe great audio is the best way to maximize your QRP SSB signal and this headset is custom made for Elecraft gear and certainly delivers. It’s a major upgrade over the KX3 hand mic and, I believe, must add two S units to your signal.

Pileups!

Holy cow! I had no idea what would be awaiting me on 40 meters phone.

I spotted myself on the POTA network and my daughter, Geneva (K4TLI), moved in to log for me on my Microsoft Surface Go tablet.

In all of my field activations, I’ve never had the pileups I had that day. It sounded like proper DXpedition pileups. In order to make the most of it, I had to note three or four calls at a time and work them in succession.

Had this not been POTA, I think I would have moved to split operation to break apart the pileup and work it more efficiently. But in truth, POTA hunters/chasers are not used to thinking in terms of split.  With only a handful of exceptions (for example, when I activated rare parks during the 2016 NPOTA program) I’ve never had a pileup so large I considered operating split at a park.

I did work stations about as quickly as I could but didn’t go into full “contest” mode where I give a quick signal report then move on to the next person.

Frankly, POTA and SOTA are not contests and part of the fun of it for me is the community and bonds that are formed between activators and hunters. It’s like meeting people at an on-air family reunion.

My SSB exchanges are never long-winded. I do maintain a certain cadence and keep POTA exchanges relatively brief because that’s just my operating style. I see this as a courtesy to the hunters who may have a limited opening to work my park and I want them to have ample opportunity to put me in the logs. I only spend a bit of time rag-chewing if the bands are a bit dead.

At the same time, I endeavor to make my exchanges friendly. I always try to take a few seconds to thank the operator at the other end of the ether and and wish them a good day.

Because, at the end of the day? POTA is not a contest.

But I digress…

It was amazing fun getting a bit of that pileup “rush”–!

Geneva was logging about as quickly as she could as she heard me reply to stations with their callsigns.  I would like to have used the speaker on my KX3 so she could follow the pileup but one of the weak points of the KX3 is the mediocre audio from the internal speaker.

You might see me logging in the photos above because I was also keeping a paper log to cross-reference with the N3FJP generated logs later.

Tally

I worked a total of 90 stations in about one hour and five minutes on the air.

I made 10 CW contacts on 17 and 30 meters, and 80 SSB contacts on 40 meters.

Of course, it was SSB where I really racked up the contacts in short order: 80 stations in 47 minutes. Whew!

I’m certain I could have logged 150-200 stations if I had more than about an hour or so of on-air time. By the time I left the air, I did eliminate the pileup.

Here’s the QSO Map from my logs (click to enlarge):

By the way: Geneva (K4TLI) is close to taking her General exam so you’ll soon be seeing her call on the POTA and SOTA spots page! I’m already piecing together components for her field pack! Of course, she’ll start by building her own resonant antennas! She can’t wait.