Tag Archives: QRP

Field Reports, News, Portable, POTA, QRP

W6CSN Activates Fort Baker in the Golden Gate National Recreation Area

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Many thanks to Matt (W6CSN) who shares the following post  from his blog at W6CSN.Blog:

Fort Baker On The Air

by Matt (W6CSN)

Fort Baker is a former U.S. Army post situated at the north of side of the Golden Gate, opposite Fort Point and adjacent the town of Sausalito, California. The post is now part of the sprawling Golden Gate National Recreation Area (GGNRA) which is also known as K-0647 for POTA.

Many of the good POTA spots in the GGNRA are heavily used for recreation and sightseeing on weekend days such as this, but Cavallo Point is out of the way enough that there was still ample, free parking today. This location offers spectacular views of the Golden Gate Bridge, the city of San Francisco, and Alcatraz and Angel Islands at anchor in San Francisco Bay.

Today the “pull of POTA” was strong as I wanted to get another activation done before the arrival of an anticipated solar storm as well as rains predicted for the coming week.

During the week leading up to this activation the Bay Area has experienced fine weather with mild daytime temperatures and light winds, but driving in, the sound of rigging slapping loudly against the aluminum masts of the sailboats docked in the Presidio Yacht Club marina told me that it was windy down here.

A short series of wooden staircases lead up from the parking area to Battery Yates, named for Captain George Yates of the U.S. Cavalry who fell in the Battle of Little Big Horn in 1876.

The gun battery is a reinforced concrete structure which once sported six rifles that fired a three inch caliber cartridge to provide for naval defense inside of San Francisco Bay. The guns were manned through the middle of World War Two when, by 1943, they had been moved to more strategic locations.

Today I had hoped to use the same steel pipe which supported a fiberglass mast and EFHW in an earlier activation from this spot, but unfortunately the pipe was too thick to get the jaw mount securely attached.

I went with plan B which was to use the pipe railing at the back edge of the gun pit. Being unsure whether or not the galvanized steel railing made any electrical connection to what surely must be rebar embedded in the concrete, I deployed the 17 foot vertical whip with three radials just in case.

Whatever was serving as a counterpoise, it was doing a great job, providing an SWR reading of 1.0 to 1 on the Mountaintopper MTR-4B. This was probably the third activation on this Lithium-Ion battery pack, so the power was down to 3.7 watts, still plenty for a CW activation with a resonant antenna.

The activation was scheduled ahead of time on the POTA web application so all I had to do was just start calling CQ POTA and let the RBN do the spotting. I soon heard from KG6HM from right across the Bay, followed by stations from Washington, Idaho, Utah, Arizona, and New Mexico.

I was starting to think it would be only western states calling in, but the band opened up a bit, bringing N3RT from Delaware. Now we had a proper coast-to-coast activation, and, I bagged a hard-to-get state needed for an informal CW “Worked-All-States” achievement.

By this time, the wind really started to pick up and with the sun so low in the western sky, it was becoming chilly. Satisfied with the 14 QSOs in the log, we packed up, made our way back down the pathway to the car, and then to a fancy coffee house in Sausalito for a nice warm cup.

Equipment Used

73 de W6CSN

Field Reports, News, Portable, POTA, QRP, Videos

Field Report with N5FY: Checking out the new N6ARA MiniSWR (and a sweet 9V battery) at Don Carter State Park!

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I am catching up with field reports and videos from last month and, I must admit, it’s fun reliving these activations.

October was such a busy month, it’s all been a bit of a blur.

Because I have a second Thanksgiving meal to prepare this morning for my wife’s family, I need to keep this report short–which won’t be easy because there’s a lot to unpack here– so we’re going to attempt do another Postcard Field Report!

Postcard Report from Don Carter State Park (K-2171)

I mentioned in a previous post that I participated in the W4 SOTA campout last month. .

Part of the fun  of the campout was hanging with my good friend Joshua (N5FY) whom many of you know from his amazing Tufteln antennas and accessories.

On the morning of Friday, October 13, 2023, Joshua and I activated Rocky Mountain (W4G/NG-011), a beautiful 10 point summit along the Appalachian Trail.

That afternoon, we met with Joshua’s family briefly, then planned to head to a pub in Clayton, Georgia, where a number of the W4 SOTA campers were gathering.

Joshua determined we had just enough time to pop by Don Carter State Park (K-2171) for a quick POTA activation and still make it to Clayton in time. As a bonus, Don Carter SP has a number of covered picnic shelters, making set up in the dry quite easy (it was raining at the time).

For this activation, I used my Mountain Topper MTR-3B field kit that I had used during my SOTA activation on Rocky Mountain. In fact, it was the only radio kit I brought with me for activations that day.

Joshua lent me his Tufteln 40/20 meter linked EFHW antenna (we only used the 20 meter portion of it) and I also got to use a few other accessories that were still very new to me:

N6ARA MiniSWR Meter

One was my friend Ara’s latest creation, the MiniSWR meter. Ara (N6ARA) kindly sent me this production unit to test (at no cost to me) earlier in October.

I was very excited about this particular product because a few of my QRP radios lack a built-in SWR meter (my MTR-3B, MTR-5B, TR-35, and SW-3B to name a few). Ara’s MiniSWR meter is so tiny, it’s easy to carry even in my MTR-3B SOTA kit that’s built into a Pelican 1060 waterproof case. (If you’d like more details, I’ll be adding this MTR-3B kit to the Radio Field Kit Gallery soon).

The MiniSWR in action earlier that day on Rocky Mountain.

As with all of Ara’s products, the MiniSWR works brilliantly, is very affordable, and is available as a kit or pre-assembled. Check it out at N6ARA.com!

Rechargeable 9V Batteries

Another new-to-me product was this USB-C rechargeable 9V battery originally recommended by Adam (K6ARK).

Being honest here: this battery sort of blows my mind!

When paired with super efficient QRP radios like my MTR-3B (which uses something like 18mA in receive), one charge will take me through as many as two or three full SOTA/POTA activations!

These batteries are insanely affordable too. You can buy two for $15 and change at Amazon.

When I purchased these, I also bought two 3S packs in a Prime Day deal. These 9V batteries work so well, though, I’ve yet to add PowerPoles to the new 3S packs. I prefer the size and ease of use of these 9V cells.

Set up

Joshua helped me set up in short order. We deployed the 20M EFHW next to the picnic shelter and Joshua kindly lent me his OSMO 2 Action Camera and Anker SoundCore Mini speaker so I could make a video of this impromptu activation. Continue reading Field Report with N5FY: Checking out the new N6ARA MiniSWR (and a sweet 9V battery) at Don Carter State Park! →

Field Radio Kits, Field Reports, Guest Posts, News, Portable, POTA, QRP

Field Radio Kit Gallery: N5FY’S Elecraft KX1 Minimal CW Kit

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Many thanks to Joshua (N5FY) who shares the following article about his KX1 portable field radio kit which will be featured on our Field Kit Gallery page. If you would like to share your field kit with the QRPer community, read this post. 

N5FY’S Elecraft KX1 Minimal CW Kit

by Joshua (N5FY)

I started operating CW this past August and am having a blast! One great thing, or maybe its a bit of a problem for the budget, is that when you can work CW, there is a whole new world of HF radios to collect…I mean operate!

Not to mention the ability to pack out a small portable kit that can be thrown in a bag at the last minute when headed out the door. I have a few such kits but lacked a throw line for each. So, I picked up some more Arborist Throw Line from Atwood Rope Manufacture so I could finish out the first kit.

I just snagged a used, inoperable, KXPD1 paddle to complete my KX1 radio. I had to rebuild the jack on the key but did so in quick order and decided to make it out to my local park for a POTA activation. My plan was to finish up the kit with the throw line and then test out the new complete kit. Suffice to say, all went well!

N5FY Beautiful Morning View with the KX1

The KX1, now out of production, has been a pleasure to operate CW with. This unit has the internal ATU option, 6xAA battery pack, and I updated the internals to add 80 and 30m. So this rig will run 20/30/40/80m.

There are 2 message memories, built in keyer, and even includes RF, AF, and bandwidth knobs for quick adjustment while operating. I’m no experienced CW operator, but this rig is hard to beat in my opinion. Then again, my KH1 hasn’t show up yet!

N5FY KX1 Complete Compact Kit

The antenna of choice here is my Tufteln 2 Wire No Transformer with a 41ft radiator and 17ft counterpoise. The internal ATU makes working 20, 30, and 40m simple and with no coax needed. I would use a much longer wire if I needed to work 80m. This antenna packs away very nice and not needing the Coax is a space saver. I have one version or another of my QRP antennas in each of my radio kits! 

N5FY KX1 Complete Compact Kit Packed

Packing a kit with no room to spare is almost like playing Tetris. I have a good bit of gear from Go Ruck, its all fantastic. For this kit, the 3L would leave a bit more space for some additional gear. If you are looking for some pockets as well, I like the GR2 Field Pocket. For this KX1 though, with the cover installed, I happed to forgo the bit of extra protection for the lightweight small size.

N5FY KX1 Complete Compact Kit Closed Up with Pencil for Size Reference

Next Kit to finish up is the KX2 and TX-500. Both just lack the throw line.

Joshua N5FY, 72

Field Reports, News, Pedestrian Mobile, Portable, POTA, QRP, Videos

Elecraft KH1: A Quickie Pedestrian Mobile POTA Activation!

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Thursday, November 9, 2023 was a typical “dad taxi” day for me.

By the time I got around to doing a POTA activation that afternoon (which was always on the docket) it was within 30 minutes of when I needed to pick up my daughters.

Fortunately, the Blue Ridge Parkway Folk Art Center was en route to town.

I had planned that day to pair up my Elecraft KH1 with a random wire antenna, but looking at the time, I realized that was being a little ambitious–the few minutes to deploy and pack up the antenna would cut into the activation.

Instead (since I had just received my KH1 logging tray/cover) I decided to put it to the test with a real pedestrian mobile activation using the KH1, its  whip antenna, the logging sheets I printed/cut, and the teeny space pen included with the logging tray. In theory, this all looked doable, but in practice I didn’t know if I would actually be able to log on a tray attached to the side of my radio!

I had planned to use my Zoom H1n recorder for the KH1 audio since I would be making an activation video (see below), but frankly, I simply didn’t have time to set it up. I had to make do with the KH1 wee speaker.

Speaking of the speaker…

After playing with the speaker for a few weeks now, I’ve found that it sounds much better when I run the KH1 with a wide CW filter.

I’d always assumed being a low-fidelity 1″ speaker that narrow audio would be best, but I was wrong about that. In the field, I tinker with the filter and attenuation settings for the best audio balance.

Still, it’s not perfect (the speaker is really a “bonus” feature) but it’s much improved over my initial POTA activation.

Of course, I would have been using earphones had I not been recording the activation on camera. Via earphones, the KH1 audio is excellent!

Gear:

Note: All Amazon links are affiliate links that support QRPer.com at no cost to you.

On The Air

I hopped on the air, started calling CQ POTA, and the stations started rolling in. Continue reading Elecraft KH1: A Quickie Pedestrian Mobile POTA Activation! →

Field Radio Kits, News, Portable, QRP

Field Radio Kit Gallery: K8ZT’s Elecraft KX3 Rapid Deployment Kit

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Many thanks to Anthony (K8ZT) who shares the following article about his portable field radio kit which will be featured on our Field Kit Gallery page. If you would like to share your field kit with the QRPer community, read this post. 

K8ZT Elecraft KX3 Rapid Deployment, Expedition Go-Box

I have been active in portable Field Operations, portable contest operations and POTA for many years. I also like always to have the option of both multiple modes (CW, SSB & DIGI) and multiple bands for my portable operations. I am not a SOTA operator, and although weight is still an issue, this is definitely not a minimalist setup. My preferred method for go-boxes is the rapid deployment model. In this model, almost all interconnections of elements in the kit are already made, and the opening of the case and attachment of the antenna get me on the air in seconds. This model is not designed for airplane baggage handling or other rough transportation but works well in a backpack or carry-on.

Here is a photo (above) of operating FD from Delaware

The design I have used can work with other radios with similar footprints, including Elecraft KX2, Icom 705, Xeigu 5105 or 6100, etc. You could also substitute other similar tackle or tool boxes. I like working with plastic cases because they are lightweight and easily modified. I have put together a slideshow on my go-box with instructions and suggestions at tiny.cc/rapidkx3.

I used the Plano 135402 4-BY™ 3500 Stowaway® Rack System tacklebox.

A very similar box is the Harbor Freight- STOREHOUSE Toolbox Organizer with 4 Drawers.

Securing the KX3 to the box was easily accomplished by substituting two longer nylon thumbscrews for the two shorter manufacturer-supplied ones. These screws extend through the case and screw into KX3. Nylon was chosen to allow easy customized lengths. The BNC antenna extends out of the case.

In addition to using the tackle box for my go-box, I also got the four insertable clear plastic containers. With the radio installed, I still have room for one container in its original position.

I can load a lot of extra supplies in these containers. You can even set up each of the four for different types of operations.

The top of the tackle box is storage space for my LiFEPO4 battery and other items. The contents can change depending on the planned operation. Here, you can see the Mic for phone operations and a DigiRig Mobile External Sound Card Interface for FT8. If doing a contest-type operation, I usually use a headset with a mic, and you can see the push-to-talk foot switch in the box ( a source of cheap light foot switches is eBay Tattooing foot switches).

I have also run cabling from the radio’s connections (Mic, Key, Headphone & Serial port) into the top area to make connections easier. To facilitate multiple connections, each uses a 3.5 mm plug 90° (connection to radio) and a splitter with two 3.5mm sockets to connect accessories. I used a label maker to label each connector’s socket ends.

Note the quick reference diagram of the KX3 mounted in the lid of the go-box. This is something I do with all of the go-boxes I build. I use tiny bungee cords on larger go boxes to securely store manuals in lid space.

I like computer logging, especially for more extended contests or Field Day operations. I use the computer to interface with the radio for this operation. This also provides me with a computer to do digital modes. I have found laptops that work with 12-volt DC to extend the usable time when AC is unavailable. I have also found PC Power Banks with 20 V DC output that can run most laptops for 24+ hours in conjunction with the laptop’s internal battery. One accessory I find essential is a simple USB storage drive with the following:

  • Installation file for any computer programs I will be using (Logging software, WSJT-X, JT-Alert, etc.)
  • Elecraft KX3 Control Utility (to program macros, make setting changes, etc.)
  • Rig computer software Drivers for all of my radios
  • Firmware for all of my radios (just in case)
  • PDFs of all user manuals for any equipment I am using. Although paper manuals do not require a computer, they are heavy, easily damaged and especially not computer-searchable for the exact item I need to diagnose my issue.

The other thing the USB drive can facilitate is the emergency use of a loaner computer, which would have none of the software I would need installed.

I use a variety of antennas with my kit, but my default is a random-length Endfed connected directly to KX3’s antenna jack with a BNC splitter. My support is a 7-meter fiberglass collapsible fishing pole. Here is a table with alternative random antenna lengths to try- link#1 and  link #2

For additional information on this and other portable operations packing ideas, see my Portable Operations presentation slideshow tiny.cc/portop and video https://youtu.be/It3wlq7RoUo.

Equipment:

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

DITs and DAHs from Alcatraz

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DITs and DAHs from Alcatraz

by Leo (DL2COM)

San Francisco Radio Diary – Part 1

“No way!” I said to myself when I saw that Alcatraz Island is an official Parks-on-the-air (POTA) reference which has only been activated four times by two operators.

Alcatraz Island
Alcatraz Island / POTA reference K-7888 & 2fer K-0647

It surprised me that such a historically relevant site hasn’t seen more ham radio activity in the past – or maybe it has, just not for POTA. I then got super excited as I was packing my bags for San Francisco.

I have missed this foggy beauty so much and it has been many years since I visited the city. I won’t bore you with the ordeal of our travel but it included canceled flights, multiple delays and rescheduling via Berlin and London the next day due to a hostage situation at Hamburg airport. So our already super short trip of 4.5 days shrunk into a good 3 days in SF. So which things to cross off the schedule now? It was clear that this unfortunate situation was certainly not going to eat into my activation budget. Hell no!

I admit since watching “The Rock” (1996) Alcatraz has always been a place of mystery and fascination to me. Those who are interested in reading more about the former fort, military prison and federal penitentiary can do so here.

After I learned that it was also a CW ATNO I instantly said: “Done deal. The ink is dry. I will activate with morse code in the shadows of Sean Connery, Nicolas Cage and Ed Harris”. Of course I would do it plain vanilla style throwing good ol’ wires in trees and staking pointy things in the ground. Yeah right. Sometimes passion does tend to carry you away a wee bit so a little later I gathered myself and started doing some research.

K-7888 log so far

Apparently the first POTA pioneer on Alcatraz was KC1MIJ who managed to get 5 QSOs in with an FM HT in July 2021. I’d say that’s pretty awesome for a location almost as low as sea level. The first successful activation was done on December 3rd 2021 by Elizabeth “Liz” N6LY and her husband Kevin K6YD. Since then both of them had only been back one time in December 2022 for another day to achieve a whopping cumulative 761 phone QSOs in only two days of total operation. Wow! What an achievement. No other hams have tried to activate Alcatraz since.

National Park Service Badge
The entire island is under management of the National Park Service (NPS)

I didn’t hesitate to write Liz an email and ask about her experience operating from the island as I knew it would probably require some preparation. The POTA website also stated that a permit from the National Park Service (NPS) is required. Luckily Liz replied swiftly with a lot of helpful information and I am very thankful for the email exchange. She specifically pointed out that it is in fact necessary to get a permit (even for simple HT activity) and that she had already applied in July for another day activity this coming December. They are still waiting to hear back from NPS’s office so it does seem quite hard to get approval for a “proper” activation. It is understandable that folks there want to have control over an organized operation where antennas, 100w radios, chairs etc. might need to be set up. With so many tourists visiting each day they also want to make sure that any activity doesn’t interfere with their core business especially on weekends.

Since I really didn’t want to spoil any of the hard preparatory work with NPS that Liz and Kevin had done for the ham radio community as well as respect local processes I wrote an email to the Alcatraz Rangers Office asking for a permit only a few days before my arrival. I knew it was a long shot and highly unlikely that they’d get back to me in time. So I called them every morning and afternoon the days after to follow up but was unsuccessful reaching them on any channel. By that point I had almost given up. However there were plenty of other options for activations so I had a blast in/on several SOTA/POTA references in SF which I will report on later.

Alcatraz Island Ferry
Alcatraz Island Ferry @ Pier 33

On our last day I woke up and thought “Man, I can’t just leave the Bay Area and not activate Alcatraz.” Since one of my appointments got canceled short-term I didn’t think long, jumped on an Uber to Pier 33 and off I was (yeeeees, online tickets were still available).  Continue reading DITs and DAHs from Alcatraz →

Field Radio Kits, News, Portable, QRP

Field Radio Kit Gallery: PP2PB’s Xiegu X6100 Field Kit

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Many thanks to Pedro (PP2PB) who shares the following article about his portable field radio kit which will be featured on our Field Kit Gallery page. If you would like to share your field kit with the QRPer community, check out this post.

Main bag

  • Canvas bag
  • Xiegu X6100 (complete with hand mic, power and usb cable) with aluminium shield
  • Homemade 6Ah Lifepo4 battery
  • Earbuds (an old Zune HD pair, and yes, the Zune HD still works)
  • Aliexpress CW Paddle
  • Coax: 5m RG-316, 2m RG-316 with homemade inline choke, 30cm RG-316 jumper
  • Homemade 2m/60cm Signal Stick “clone” (The X6100 can tune it to 6m, 10m and even 12m bands!)
  • 2x homemade QRP 49:1 UNUN (one 2:14T and one 3:21T) made with FT82-43 toroids
  • 3x plastic S-Biners/Hooks for antennas, coax, etc.
  • SO239 to BNCm and BNCf to BNCf adapters
  • SD card with R1CBU alternative firmware (awesome project runs directly from SD Card without messing with original firmware) –
  • Antenna wire: 26 AWG 20m, 5m, a couple 2-3m counterpoises. And a couple 30cm alligator clip jumper cables.
  • BNC to banana adapter (for any type of improvised antenna)
  • Some generic paracord and velcro for general purpose

Support bag

I have a few generic fiberglass poles for antenna deployment that I fitted with a guying system made of paracord: simple, slim, lightweight and strong. And generic tent stakes. I only take them when needed.

This kit is my travel, POTA, SOTA kit. The main bag contains everything needed for operation, and the support bag has a few things to prolong the operating time (on multiple day trips) and for better antenna deployment.

I’m really into DIYing stuff and being from Brazil its hard and expensive to get stuff from USA, so DIY is the way to go.

The kit is about the size of a FT-857D (just the radio), and weighs less. And I have enough redundancy without getting too bulky or heavy.”

Field Reports, News, People, Portable, POTA, QRP, Travel, Videos

A welcome POTA layover with friends at Lee State Park in South Carolina

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On September 30, 2023, my uncle Reggie passed away at the age of 83. I was incredibly fond of him. His funeral was to take place in Georgetown, South Carolina on Tuesday, October 3rd.

The funeral time was confirmed on Sunday evening (Oct 1), so I made all of my travel plans that night. I decided to leave early Monday morning and drive to Myrtle Beach where I’d reserved a hotel room for one night. I’d then attend the funeral the following day and drive back to my home in the mountains. Round trip, this would amount to about 12 hours of driving.

This, of course, was a pretty somber reason to take a road trip–although it would be nice to spend time with my SC family. I wanted to make the most of my travels and fit in a little “radio therapy” along the way. I glanced over the POTA map for a park that might make for a nice break from travels.

Before hitting the sack Sunday evening, I remembered that many months ago Keith (KY4KK) told me to give him a heads-up anytime I planned to pass by Florence, SC. I knew that Florence would be a simple detour on my journey, so I reached out to Keith and asked if he and his POTA buddies Tommy (N4GS) and Steve (W4JM) might, by some chance, be available for a quick POTA activation. Of course, this was very late notice.

Keith wrote back and recommended that I activate Lee State Park–he and Tommy were both available but, unfortunately, Steve had other plans.

Monday morning, I hit the road and arrived at Lee State Park in the early afternoon.

Lee State Park (K-2905)

I pulled into the park driveway and was greeted by a number of Halloween displays. Evidently, the park staff loves decorating for holidays.

At first glance, this looks like a POTA activator that never never got their ten logged.

I pulled into the visitor’s center parking lot and immediately met Keith and Tommy.

After a quick greeting, Keith said, “Thomas, our job here is to get you on the air as smoothly as possible so you can continue your trip.”

Keith, KY4KK (left) Tommy, N4GS (right)

Herein lies what I love about amateur radio and POTA specifically: even though Keith, Tommy, and I had only just met in person, they were instant friends.

I must say, Lee State Park is the perfect POTA park; there are loads of tall trees, covered picnic areas, open spaces, ample parking, and ham-friendly staff. It just doesn’t get better than this!

We walked to a large covered picnic area and Keith suggested that we deploy his 40 meter EFHW antenna.

I agreed without hesitation!

Unlike me, Keith is adept at using a slingshot to deploy his antennas.

As I started setting up the radio, Keith aimed his slingshot and snagged a really high branch on the first go. This 40M EFHW was being deployed as a vertical!

I decided to bring along my Penntek TR-45L on this trip. I’m glad I did: it was ideal for this sort of POTA activation! Continue reading A welcome POTA layover with friends at Lee State Park in South Carolina →

Field Reports, News, Portable, QRP, SOTA, Videos

Elecraft KH1 + Speaker Wire = Pileup Madness on Bakers Mountain!

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Since the beginning of November, I’ve been pushing my Elecraft KH1 activations to the front of the line so that readers and subscribers who are considering this wee handheld radio might get a chance to see and hear it in action.

So far, I’ve used the KH1 for what it was designed to do: pedestrian mobile/handheld using the built-in whip antenna. I’ve activated a park, a summit, and even did a little parking lot POTA hunting.

I’ve decided that November is KH1 month–this is the only radio I’ll use this month.

I will start blending in some of my field reports from October (there were some really fun ones in there) that feature my other field radios and a variety of antennas starting next week. I’ll still be pushing some of my KH1 field reports to the front during that time as well. Also, I’ll likely post more bonus videos over on Patreon.

Where to activate?

On Monday, November 6, 2023, I had several hours in the afternoon to take the KH1 on another mini radio adventure. I wasn’t sure where I’d perform an activation, though.

This time, I didn’t want to do a pedestrian mobile activation. I wanted to see how the KH1 might play on my kneeboard and how it might pair with my 28.5′ speaker wire antenna. I was curious if its internal ATU would find acceptable matches on all bands.

I packed the KH1, throw line bag, Tufteln Kneeboard, Helinox chair, 2L water bag, camera gear, and speaker wire antenna in my GoRuck pack (FYI: all links and full inventory are below).

This was more gear than I’d need, but all of these items were in my radio box in the trunk/boot of my car.

I had only one errand to run that afternoon: I needed to drop off some of my wife’s illustrated Christmas cards at my friend Hamilton William’s Gallery in downtown Morganton.

After catching up with Hamilton, I had to make a decision about where to go for an activation. I knew this: it was an incredibly beautiful day, so whatever I did, it needed to include a hike!

I considered a few parks but the most convenient spot for a proper hike was Bakers Mountain. It also required the least amount of driving since it was essentially on the way back to Hickory.

Bakers Mountain (W4C/WP-007)

It being an early Monday afternoon, there weren’t many other hikers at Bakers Mountain. In fact, I never ran into any other hikers on the main loop trail.

Bakers Mountain park is (sadly) not a POTA entity. It’s a county park, so does not currently qualify. There was talk once of Bakers Mountain being turned into a state park, but it falls just shy of the amount of acreage needed to qualify.

Bakers Mountain is a one point SOTA summit, but the hike (if you do the full loop trail) is actually pretty strenuous if you take it at a nice clip. I’d consider it a moderate hike overall.

I’ve already activated Bakers Mountain this year, so this activation’s point will not add to my goal of reaching Mountain Goat (1,000 points). That’s okay, though. Unless my family life changes in a way that frees up a lot more time, Mountain Goat is a good 5-6 years in the future at my pace! I’m perfectly fine with that.

I reached the summit and found a spot to set up in the shade. Continue reading Elecraft KH1 + Speaker Wire = Pileup Madness on Bakers Mountain! →

Guest Posts, News, Portable, QRP, Stealth

Bob pairs the QRP Labs QCX+, ATU-100, and a super stealthy longwire

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Many thanks to Bob (K7ZB) who shares the following guest post:

QRP Operation with the QRP Labs QCX+ and ATU-100 on 20M CW

Bob Houf (K7ZB)

By now the QRP Labs QCX+ CW transceiver is well known, and many have been shipped by Hans.

The first unit I bought came fully assembled in the aluminum case but had a weird malfunction in the audio chain and after careful troubleshooting with Hans’ help a replacement unit was sent and worked well.

I have assembled plenty of electronics kits in 60 years of ham radio, building some from scratch and  worked as an electronics design engineer for years so having someone else solder up a board now is a luxury I am happy to pay for – but if you like the smell of solder as smoke gets in your eyes and your hands don’t shake, by all means save some money and build one yourself.

I picked up a Malahit rendition of the N7DDC ATU – mine came from Amazon and is the 100W version that uses an external power supply.

My first setup was to see if I could power both the QCX+ and ATU-100 simultaneously from a portable 25800mAH charger bank with two USB ports.  The addition of two USB-to-12VDC converter cables looked like an ideal way to minimize the size of the radio package for portable operation:

Unfortunately, although the power capability of the battery was far more than adequate, when transmitting CW for just a few seconds the battery BMS tripped the power unit offline.

So, my next move was to use my larger 12V, 6AH LiFePo4 battery to power both units which worked well.

The antenna used here is a longwire of 47’ running from the top of our second-floor balcony out to a tree.  The wire is about 25’ above ground and runs between two of the 3-unit townhouse/loft condo building units. There seems to be little interaction noticed on the signal reports received due to the physical proximity.  And, when not experimenting with QRP I routinely run 100W from my transceiver into the wire without a problem.

This time, however, I decided to use #26-gauge magnet wire instead of the far stealthier #28 wire I have run for the past year.  A tree trimming gang went through earlier in the summer and took out my #28 monofilament tether line in the tree, so I decided to go with a larger diameter wire.

In both cases I sponge a thin layer of battleship gray paint on the line which helps conceal it when looking up in the sky.

One discovery from this version is that there is a BIG difference in visibility between #26 and #28 magnet wire as seen from the ground!

I took down the #26 and will revert to #28 – which is essentially invisible at 25’ above your head.

I run the wire directly into a Common Mode Choke which then drops down to another CMC designed for other bands so that with the two in series I have no shield currents and no circuit breaker tripping or RF in the shack issues on 40, 20, 15 and 10M, even running 100 Watts:

I have a very low noise level on receive and don’t use a Balun at the feedpoint of the antenna, but I do use an antenna tuner to match the impedance, either the built-in tuner of my Kenwood transceiver or the ATU-100 for the QRP rig.

The CMC’s were designed by a friend using the K9YC cookbook approach available online and are very effective.

QCX Operation

The band conditions over the past weekend were funky with high noise level and rapid fading at times.

Despite this, I made multiple contacts in the western USA with reasonable signal reports and only one station had to send “sri no cpi”.

On Sunday evening I stumbled into the K1USN Slow Speed Contest (SST) and enjoyed making contacts from the Midwest to the Pacific Northwest and everywhere in between.

Band conditions were much quieter and there were signals nearly every kilohertz from about 14.030 up to around 14.050+.

The QCX+ uses a CW filter design set at 200Hz and with 10Hz frequency resolution it was easy to copy one signal from another, despite the lack of more sophisticated filtering capability.

Since you only are putting out a 4-Watt signal you search and pounce with care and in a casual contest like the SST it makes for a very enjoyable way to spend an hour on Sunday evening before the SNF game steals you away.

Or a World Series game.

The ATU-100 was delightful to use.  Once it tuned to a decent match (1.33:1) on the wire, it was good for the entire span from the bottom of the band up to 14.060 where the POTA gang and other low power stations hang out.

In conclusion, this is a very excellent low power station, simple to use and I am looking forward to matching it with a clever 20M elevated vertical with elevated radials a fellow ham has designed:

The elevated vertical with coax connector and radials.

Once that is working, it is off to the Lost Dutchman State Park for some POTA fun…