Field Radio Kits, Portable, QRP, QRP Radios

César’s field radio kit

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Many thanks to César (CA7OKD) who shares the following photo (click to enlarge) and description of his field radio kit:

Hi Thomas,

I share my backpack to get away anywhere, to a hill, park or beach…

    • Backpack for photographic equipment
    • Mini EF Hfkits antenna (the Balun Hfkits is missing because I lost it on a beach)
    • Coaxial M&P Hyperflex 5 with M&P connectors
    • Bottom: MFJ1899T antenna
    • Xiegu X5105, Micro, Dry Bag
    • Xiegu X6100 (perhaps the first in Chile)
    • Folding tripod stool chair

I had a very good RS-188 (McHF clone) and a uSDR; I sold them because these equipments don’t have a tuner (I like to keep the minimum).

The X5105 is a very good transceiver, the integrated tuner is wonderful.

The X6100 that fails to convince me. At least in 40 meters it is acceptable.

Greetings,
César CA7OKD

Thank you for sharing this, César! Photography backpacks in many ways are absolutely ideal for radio gear. Many allow for a great amount of flexibility in terms of adjusting internal organization. In addition, they’re very well-padded.

Interesting what you say about the X6100 compared with the X5105. I’m hoping to do a video soon focusing on the differences between these two. 

Thanks again for sharing!

Field Reports, Morse Code, News, Portable, POTA, QRP

POTA RaDAR Run: Planning, Plotting, Packing, and Activating Park #1!

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You may have noticed a common theme in my field reports: basically, it’s rare that I plan out an activation more than 24 hours in advance.

Indeed, due to my “dynamic” (I think that’s a good word for it?) family schedule, I often don’t plan an activation more than one to two hours in advance.

But last month, I saw an opportunity open on Wednesday, January 26, 2022. Basically, I had from early morning until late afternoon to play radio.

Making plans

At first, I thought about striking out early and hitting some of the parks that are a little further afield–parks I hadn’t visited in a couple years, or some new-to-me parks.

Then, I hatched an idea to activate two SOTA summits. Both would qualify for bonus winter points and both were technically doable in the time I had allotted. It would involve about 9-10 miles of hiking in addition to 3 hours of driving plus allotting for the time I’d actually spend on the air. It would equate to a very early departure and some steady hiking.

That Tuesday evening, I started putting the plan together, downloading all of the maps, preparing my SOTA alerts, and packing my SOTA pack. I spent the better part of an hour plotting and planning these activations.

Then the realization hit me: the trails I’d be hiking were likely covered in snow and ice which would slow me down considerably especially since my Yaktrax Traction Chains hadn’t yet been delivered. I realized the schedule was just a little too tight. There’s be no room for mishaps and if I made the trip I really wanted to hit both summits in the same day. So, I saved all of my maps, links, and notes to do this multiple SOTA run in the near future.

Back to the drawing board!

I decided that I did like the idea of doing multiple activations in a day, so why not fit in a RaDAR run?

RaDAR (Rapid Deployment Amateur Radio) is basically an activity that can be combined with summits and/or park activations and the idea is simple: you complete multiple rapid field deployments within 24 hours.

If you’d like more information about RaDAR, check out this webpage. Parks On The Air even has a few awards for RaDAR runs–it would be fun to apply for one of them (thanks, WD8RIF, for the heads-up!).

I so rarely have enough time to consider more than two or three activations in a day that the idea of fitting in four or possibly five activations was very appealing.

I looked at the POTA map and sorted out a route between park entities that were all in western North Carolina. I was familiar with all of the locations save one which had the potential to be both a POTA and SOTA activation. Continue reading POTA RaDAR Run: Planning, Plotting, Packing, and Activating Park #1! →

Antenna Tuners, Antennas, Field Radio Kits, News, Portable, Portable Power, QRP

Any experience using the FT-818/817 CQHAM TB-BOX?

9 Comments

Many thanks to Motters (M7TRS) who writes:

For some strange reason I stumbled across something on eBay for the FT-817/818 as I am still looking for my first HF setup.

Anyway, it’s a tuner and battery pack for a 817/818 and when I saw it I wondered if you knew about it.

https://ebay.us/vSiNwc (partner link)

YouTube video demonstration:

[Update] And this video:

Thanks for the tip, Motters. I was not at all familiar with this pack. I do like the simplicity of the setup. 

The price is certainly right at $179 US.

There are so many FT-817/818 owners out there, I’m very curious if anyone has any experience with this particular pack and if you can report on the overall quality. Please comment!

Field Reports, Morse Code, News, POTA, QRP

Field Activation Antenna Challenge #1: Military Fixture Homemade Multi-band Doublet!

13 Comments

I mentioned in a previous post that my personal “Activation Challenge” for 2022 was “to build a new antenna each month and deploy it at least once that month during a field activation.”

On Thursday, January 27, 2022 I took my first antenna–the military fixture doublet–to Lake Norman State Park for a Parks On The Air activation!

For more information about this doublet and how it was constructed, check out this post.

Lake Norman State Park (K-2740)

I picked Lake Norman knowing that it had numerous spots to set up a doublet.

Unlike an end-fed wire antenna, doublets need a little more clear space to deploy both legs; the idea is to avoid as many low tree branches and other obstacles as possible.

Many (if not most) of the operators I know who regularly deploy field doublets actually use a telescoping mast for the center support to make the whole process easier.  I didn’t take either of my fiberglass masts on this outing because, frankly, the winding fixture on this doublet acts as the center insulator, and is “heavy” compared to most of my field antennas. Continue reading Field Activation Antenna Challenge #1: Military Fixture Homemade Multi-band Doublet! →

Kits, News

(tr)uSDX kit: Just pulled the trigger

13 Comments

In January, I missed out on the initial pre-orders of the (tr)uSDX kit being managed by Rowaves in Romania.

I had my calendar marked for February 15 to check the site again for the 3rd batch as I thought that was the day they planned to issue another pre-order.

My buddy Eric (WD8RIF), who is the President of the Athens County Amateur Radio Club (ACARA), contacted me yesterday asking if I knew of any QRP kits designed with phone/SSB operation in mind. One of ACARA’s members was searching for one.

He was already aware of the

The only other kit I could think of was the new (tr)uSDX. When Eric asked for a link to the product, I went to the Rowaves site and discovered that they were taking pre-orders for the third wave of kits. Like, right then and there!

Without hesitation, I added one to my shopping cart and checked out.

I thought perhaps Rowaves caught up and no longer had a waiting list. This morning, when I checked the site again however, it appears they’ve sold out of the third batch.

Without Eric’s prompting, I would have never thought to check the Rowaves site yesterday.

Side note: There are various (tr)uSDX group buys out there. I don’t completely understand how they work, but perhaps someone with more experience can comment. DL2MAN has information and links on his webpage.

Intimidated

(tr)uSDX board “sandwich”

If I’m being brutally honest, the (tr)uSDX kit is a bit intimidating for me. I recently referred to myself as a “gross motor skills” kit builder. I think that’s a pretty accurate description.  I’m fine with through holes, simple toroids, and very clear, illustrated instructions. Truth is, I absolutely love building kits. But I’m not an electronics engineer, so when instructions are vague, I can get lost quite easily.

The (tr)uSDX toroids don’t look terribly complicated and all of the surface mount components are pre-installed. Still: it’s a wee kit and I’ve yet to check out the build instructions.

It might be a challenge for me, but I’m really looking forward to it. Besides: knowing that John (AE5X) will build his kit before I do, I’ll simply bug him if I have questions! [Sinister laugh slowly fades…]

More SSB Kits?

While on the topic of kits, can anyone point Eric to other SSB kits that are currently available on the market?  If so, please comment with a link and thank you in advance!

Morse Code, News, Portable, QRP, QRP Radios, Reviews, SOTA

Recap of my first SOTA activation with the Venus SW-3B

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I made a short post yesterday morning noting that I planned to take my Venus SW-3B and new field kit out on a maiden SOTA/POTA activation.

While I will be publishing a full activation report and video, it could be a good two weeks down the road.

I’ve gotten so many inquiries about the SW-3B, I thought I’d write up a short recap with some of my initial notes using the SW-3B in the field.

This isn’t a comprehensive review; just some beginning field notes I made for a full review I’ll write for The Spectrum Monitor magazine.

Dogback Mountain (W4C/EM-066)

I decided to activate Dogback Mountain knowing that it would easily fit in my travel plans. The views (see above) were extraordinary. Thank you for the tip, Dave (W4JL)!

This was also a shake-out for my Tom Bihn HTL2 field kit which will likely be shared with the SW-3B and Elecraft KX1. It includes everything I need to deploy the SW-3B in the field–including an arborist throw line!

I confirmed that everything in the kit worked and there were no missing components.

I paired the SW-3B with my PackTenna Mini 20 meter EFHW. This limited me to the 20 meter band, but I suspected it would yield enough contacts to validate my summit (4) and park activation (10).

I fed the Venus SW-3B with a 3 Ah 12V Bioenno LiFePo4 battery pack–my output power would’ve been about 5 watts.

Results

In short? It really couldn’t have gone better.

I worked a total of 43 stations in 44 minutes on the air. Here’s what my contacts look like on a QSO Map (click image to enlarge):

Venus SW-3B Field Notes

Overall, the experience of using the SW-3B was brilliant.

Since this little rig doesn’t have an internal speaker, I recorded the audio with an in-line Sony digital recorder. Later, when I produce the activation video, hopefully I can blend the separate audio channel with the video successfully. (Any YouTuber worth their salt can do this, but keep in mind I’m not really a YouTuber!)

SW-3B Pros:

  • Excellent receiver for field activations. I noticed no overloading and it handled the pileups very well.
  • Very pleased with CW filtering.
  • I was able to successfully program the “CQ” button with the following message: “BK TU 72 DE K4SWL” This is huge. At one point, the SW-3B could only handle a simple CW + callsign message. I’m very pleased its only message memory slot can hold the end of my exchange. Also, it is very easy to program.
  • The SW-3B is incredibly compact; only slightly bulkier than the MTR-3B if you include the encoder and AF/RF gain pot protrusions.
  • I am loving the dedicated AF and RF gain pots.
  • Display is very easy to read in the field.

SW-3B Cons:

  • Changing the CW keying sped on the fly is really not an option. It’s an awkward process.
  • The sidetone isn’t adjustable without modifying an internal component. If I could, I’d lower it just a notch or two. As-is, it’s perfectly fine, but adjustable sidetone would be a nice feature.

SW-3B Quirks:

  • When switching bands, the SW-3B defaults to saved memory allocations (not the last used frequency). If you forget and switch bands, then turn the encoder, it cycles through saves memory allocations instead of up/down tuning.

Summary

Keep in mind: this is my first activation with the SW-3B. I don’t typically form strong opinions until I’ve taken a radio on at least three or four activations and used it at the QTH extensively. With that said, first impressions are great. This radio offers much more than I would ever expect for $188.

I see why it has has become so incredibly popular among CW field activators. Now that the Mountain Topper MTR-3B is no longer available, this is a viable alternative.

I’m sure some of you may be trying to decide between the MTR-4B and the SW-3B. I will be reviewing an MTR-4B soon, but based on my experience with the MTR-3B, I don’t think you could go wrong with either radio, frankly.

The MTR-4B does allow for a total of 3 CW message memories that are very easy to access and include beacon mode. You can also adjust the sidetone volume on the MTR-4B (requires opening the enclosure to make the adjustment). Obviously, the MTR-4B is a four band radio including 80 meters in addition to 40, 30, and 20.

The SW-3B, however, has an AF and RF gain control–the MTR series has no volume control at all. The SW-3B also has a rotary encoder which makes chasing contacts across the band much easier.

The MTR-4B receiver current is roughly 27 milliamps. The Venus SW-3B closer to 40 milliamps. (Yeah, splitting hairs here!)

Stay tuned!

In the coming weeks, I will be posting a number of activation reports and videos using the SW-3B. As I mentioned, I’ll also post a comprehensive review for The Spectrum Monitor magazine in the coming months.

I can say this: if you’re a CW op who is searching for a compact field radio?  The SW-3B is a no-brainer. Just grab one.

If you still can’t decide between the MTR-4B and the SW-3B, consider getting both. Why? You could easily kit out two independent fully self-contained field packs on the (relative) cheap!

This will give you two choices for grab-and-go field activations.

Thank you

As always, I’d like to send a special thanks to those of you who have been supporting the site and channel through Patreon and the Coffee Fund. While certainly not a requirement as my content will always be free, I truly appreciate the support.

Your support not only pays the bills at QRPer.com, but makes it possible for me to purchase radios like the SW-3B.

Thank you!

I hope you get an opportunity to play radio this week.  Stay healthy and safe out there!

Cheers & 72/73!

Thomas (K4SWL)

News, QRP, QRP Radios

The Venus SW-3B’s maiden SOTA activation this morning!

17 Comments

I’ve got my new Venus SW-3B all dressed up and ready for a SOTA activation this morning (February 10, 2022); that is, if all goes well. Haven’t quite decided what summit yet, but it’ll have to be one I can hit fairly easily during my travels today.

I’ll plan to do 20 meters primarily, because I’m taking my PackTenna 20M EFHW. I also have a 30M EFHW–a separate antenna that I might also give a go.  We’ll see how busy things are.

I’m either going to find a summit with a good hike, or do a drive up summit, then hike later at park. Either way: my goal is some radio and hiking today.

I’ll plan to make a video of this activation if all goes well. To record the SW-3B audio, I’ll be using a small Sony digital audio recorder I found at a thrift store for $20 a few months ago. I don’t have time to give it a proper shake-out before I go; in fact, I don’t have AAA batteries to load in it for a test so plan to pick some up en route.

New radio, new pack, new thrift store audio recorder that’s never been powered up…

What could possibly go wrong, right?

Right!

The SW-3B fits very comfortably in this Tom Bihn HLT2 I bought for the SW-3B and my KX1 to share. (You might recall I have an HLT2 for my MTR-3B as well.)

It’s really packed out at the moment, though, because I’m using a bulky battery and haven’t optimized any of the components & accessories yet. I’ve a much smaller battery solution in the works.

If you’ve nothing else better to do today, check out the POTA and SOTA spots likely sometime between 1600-1900 UTC. With any luck, I’ll be on the air and you’ll then know what an SW-3B sounds like.

Field Reports, How To, Morse Code, News, Portable, POTA, QRP, SSB, Videos

Video: A complete POTA field activation from planning/scheduling to QRT

10 Comments

A few weeks ago, one of my YouTube channel subscribers asked if I could make a video showing the entire process of activating a park: everything from planning, scheduling, packing, driving, setting up, to activating.

Why not, right?

So on January 20, 2022 I scheduled an activation of K-6856 and recorded a very, very long activation video!

It’s 1 hour 42 minutes long, in fact, but I broke the video into chapters to make it easier to navigate and digest.

Activation Video:

Click here to watch on YouTube.

Since the entire process has been captured on video, my field report below will simply focus on the various sections of the video along with my results. That and I didn’t even think to take a single photo I was so busy with the camera (images here are all screen shots).

In the shack

My OSMO Action camera does a brilliant job outdoors, but in the shack it did struggle with my monitor brightness/contrast while I scheduled the activation. When I checked the quality from the camera’s built-in monitor screen, it looked pretty acceptable, but after being uploaded to YouTube, it was less so. Sorry about that!

Knowing this could be a problem, I did my best to describe everything I was doing on the screen. Frankly, I couldn’t go back and re-shoot this if I wanted to because it was all happening in real-time.

Before I scheduled the activation, I did sneak in a wee bit of park hunting! After all, this is how I do things in the shack.

Oh yeah, my shack wasn’t exactly tidy that day as I had a project on the table. You’ve been warned. Continue reading Video: A complete POTA field activation from planning/scheduling to QRT →

Field Radio Kits, Grab And Go, News, Portable, QRP

David’s field radio kit makes use of Tom Bihn packs and pouches

10 Comments

Being the hopeless pack geek I am, when David (AG7SM) shared photos of his many Tom Bihn bags and how he packed for a recent radio outing, I asked if he’d mind if I shared them here on QRPer.com. He very kindly agreed!

The comments below are my own, but I’ve put David’s descriptions in each image caption:

Brain Bag

The Tom Bihn Brain Bag.

I’ve often considered grabbing a Tom Bihn Brain Bag in the past for one-bag travel, but frankly it’s a little roomier than I needed so overlooked it. I never thought about using it for field radio, but it makes so much sense

“The writing implements and log I’ve stuffed into the Brain Bag.”

I have used a Tom Bihn Synapse 25 for both one-bag travel and as a field radio bag.  It also has side pockets for field notes/logbooks and pens/pencils, but I think the Brain Bag accommodates them even better. Continue reading David’s field radio kit makes use of Tom Bihn packs and pouches →

Announcements, New Products, News, Satellites

BayCon 2022: Mark introduces SOAR (Satellite Optimized Amateur Radio)

8 Comments

If you’ve been listening to the Ham Radio Workbench Podcast, you’ve no doubt heard Mark Smith (N6MTS) talk about his “secret squirrel” project. At BayCon 2022 this past weekend, Mark revealed that the “secret squirrel” is a new product he’s designed called SOAR (Satellite Optimized Amateur Radio).

Mark announced that SOAR is basically a radio that’s “optimized for operating FM satellites.”

That’s a very modest description for a radio that can not only handle full duplex FM satellite communications, but also leverage the power of a GPS and CPU to help predict passes, aim an antenna, and adjust for doppler shift on the fly. And, oh yeah, it even records.

SOAR actually does much more than this.

If full duplex satellite work is the sort of thing that interests you, I highly recommend watching Mark’s BayCon presentation:

Click here to view on YouTube.

You can learn more about SOAR at:

The Halibut Electronics website has only recently been launched, so there’s not a lot of info there at time of posting. For the latest news, I suggest you follow Mark on Twitter at: https://twitter.com/SmittyHalibut

Of course, I’ll post updates here on QRPer.com.

Note this presentation was originally given at BayCon 2022: https://www.bay-net.org/baycon.html

QRP radios, product announcements, reviews, news and more. Low power amateur radio fun!