Category Archives: Digital Modes

Accessories, Digital Modes, FT8, News, QRP

BG6LH Designs a Board for Integrated Yaesu FT-817/818 FT8 Operation

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Many thanks to Cao (BG6LH) who writes:

Hi, Thomas!

I would like to share my QRP FT8 kit for Field Operation.

A long time ago, I was seeking the most lightweight QRP kits for FT8 field operation. My goal was to have just one radio, one antenna, one phone, without too many cables, boxes, etc.

Finally, I designed a PCB. It is a Bluetooth DIGI Adapter and can be mounted on the rear panel of my FT-818.

Just plug it to the DATA and ACC jacks. It can be powered by ACC jack’s 13.8V Pin.

It works well with FT8CN, an android FT8 app.

Now, my dream has come true!

My Antenna was a so-called GAWANT, designed by JF1QHZ, I guess it’s a simple Vertical EFHW. I built it with a 1.2 meter rod.

It’s working on 7~28MHz bands, not very efficient, but so small and portable.

For FT8 QRP POTA, field operation, all of these components can be put in a small bag, and deployed in minutes.

I shared my PCB design on Github. If anyone wants to modify it, you are welcome to do so!

https://github.com/BG6LH/FT-81x-BT-DIGI-Adaptor

Thank you for sharing this, Cao. This is absolutely amazing and an incredibly clever design! I suspect a lot of FT-818/817 enthusiasts will make this same build via your design!

Thank you for reaching out and for sharing your work with the QRP community! 

Digital Modes, Field Radio Kits, Guest Posts, News, Portable, POTA, QRP

Field Radio Kit Gallery: KI7URL’s (tr)USDx Ultralight Portable Kit

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Many thanks to Jim (KI7URL) 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. Jim writes:

(tr)USDx Ultralight Portable Kit

by Jim (KI7URL)

I like to take amateur radio with me wherever I go. In my backpack, I keep a Yaesu FT-60 (powered by 18650 batteries, but that is a different discussion). But I do not like to limit myself to VHF/UHF.

My wife, on the other hand, does not think my “go bag” should take up a significant portion of our suitcase when we travel. I did build a slimmed-down go kit with my Yaesu 891, but that was still north of 12 pounds (vetoed by Wife). Then, I made a go kit with my Yaesu 818, but that was still near the 10-pound zone (again, vetoed). I needed a slimmer package.

I turned to the likes of the QCX mini or other CW-only radios. The problem is that I still am far from proficient with my code, so relying only on CW was a bit more frustrating than I wanted it to be. The (tr)USDx, an open-source radio about the size of two stacked decks of cards, interested me in both price point and functionality. It has SSB, CW, and digital capabilities….on five different bands! Once it was in my hands, I had to build a kit around this new radio!

I want to keep my radio protected, so I started with a small dry box. On the inside, I printed a ‘redneck laminated’ (see also: packing taped) a quick setup guide for using the radio on digital modes if I ever have an in-field case of “the dumb.”

The radio is powered by a small RC battery. I chose this for size, weight, and availability (had it lying around from another project). When fully charged, it reads 12.6 volts. I added powerpole connectors to it because who does love powerpoles (be careful not to short the battery when adding power poles)? I have a small power adapter that goes from powerpoles to the 1.3mm connector so I can use my bench supply or other power sources without making another cable.

I have two antennas that I use (a K6ARK end fed and a QRP Guys No-Tune end fed with 26 gauge wire for 20m). But I like the QRP Guys one because I mostly do 20m and I think it was slightly lighter than the K6ARK antenna (don’t quote me on that though, I loaned the K6ARK one out and have not gotten it back). Plus, not having a tuner lightens my load as well!

Deployed for digital modes.

I have a retired smartphone in my kit that I use for some logging and some other ham-related apps, but mostly for FT8 using the FT8CN app. I also have WoAD on there and soon I hope I can get WinLink functionality with a small TNC as per this video by OH8STN. HF WinLink would be a good benefit with a lighter load than packing in a laptop or Raspberry Pi.

The kit weighs in at 2 pounds 6 ounces (just over a kilogram). This could be stripped down if I only did an SSB, Digital, or, gasp, a CW activation. But as it stands, the small form factor and low weight make the wife happy!

73,
Jim
KI7URL

Equipment:

Digital Modes, Field Radio Kits, FT8, News, QRP

Field Radio Kit Gallery: W7UDT’s QRP Labs QDX Digital Mode Field Kit

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Many thanks to Rand (W7UDT) 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.

Rand writes:

My Digital HF Field Kit…

by Rand (W7UDT)

Thomas & the gang… this is (de) Rand W7UDT

The QRP Labs QDX is yet another, brilliant creation from genius Hans Summers. Hans has created a cult following, with an assortment of kits, and assembled bargains of fun!

Many of you know this, and have his gear. And as sexy and alluring my Elecraft KX2 may be, it’s often, as a minimalist, that I reach for my QCX Mini(s), or my QDX (Hi & LoBanders).

I guess it’s a touch of OCD that compels me to minimize and simplify my field kits. (Yes, I need help!) And yet, if you too, upon reading this confession, find it all too interesting and read on.

Here’s the QDX field deployment in a nutshell…

Deploy the antenna, a LNR Precision Trail Friendly End Fed Wire. With a toss and some luck, the weight clears the chosen branch and the antenna is hoisted aloft.

Often I operate along the Boise River Greenbelt, just off the path near the river. I find that perfect spot to operate.

The flow of water, doesn’t make too much noise, and doesn’t matter with this mode, FT8. Only that it has a sunny view, and it’s comfortable and dry.

The QDX transciever & DC Pack is velcro’d to a clipboard, and once secured, I attach a 6′ section of RG316 and an inline 1:1 balun. The BNC coax is then connected. A trusted prussick knot, attachs the coax and clipboard, and provides the strain relief and work surface needed to operate.

8″ USB c/b cable connects the QDX with my Samsung Galaxy S20 Ultra, to the QDX. The transiever is powered by a 3aH 12v DC Pack of (3) 18650 LiFePo4 batteries. With the swich thrown, it archs to life. I then open the FT8CN app on my Samsung, select the Comm Port, and Wow! What fun!

The software does all the work, and even logs the contacts automatically. An occasional touch to the screen, can have you operating at will. It’s a free app on GitHub, that will pleasantly surprise and surpass any low estimations of ‘Free Chinese Stuff.’

All this can be viewed on YouTube, watch Linas LY2H.

Here’s my assembled field kit for my QDX (LoBander). I absolutely love this thing!

It’s a very tight kit. As simple as Hans ‘the Man!’ can make it. What a capable marvel of creative genius. Here’s a pic…

These modes offer error correction, and incredible Dx. The software function flawlessly, and automatically logs the contacts. Hang it high, and the antenna is happy! Easy, cheap and fun! 72 de W7UDT Rand

Notes ~ FT8, JS8 Call & RTTY Only, using the amazing & free FT8CN software.

Digital Modes, News, POTA, Skills, SOTA

Check Out Vince’s Quick Start Guide to SOTAmat!

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If you’re not familiar, SOTAmat is an incredibly valuable app and tool for spotting yourself on the SOTA or POTA networks when you’re truly off-grid and outside the range of mobile phone service.

Check out this two minute intro to SOTAmat:

Setting up SOTAmat for the first time can be a bit confusing, but it’s not difficult. It is important, however, that everything is set up in advance of your SOTA or POTA adventures.

Our friend Vince (VE6LK) has just published a “Quick Start” guide to SOTAmat. It’s concise, and covers everything you’ll need to get set up and running with SOTAmat!

Click here to watch on YouTube.

Thanks for putting this tutorial together, Vince!

SOTAmat is an incredibly powerful resource for those of us who activate parks and summits in remote locations. I highly recommend downloading the app and making it a part of your SOTA/POTA tool kit!

For more information about SOTAmat and for links to the apps, check out the SOTAmat website!

Digital Modes, Field Reports, FT8, Guest Posts, News, Portable, POTA, QRP

Conrad’s Kayak POTA Activation on Minnie Island

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Minnie Island K-1698 Kayak Activation

by Conrad (N2YCH)

9/1/2023

As many readers know, I am on a Parks on the Air (POTA) quest to activate all references in the state of Connecticut. There are 136 parks, and four of them are only accessible by boat. You may have seen my recent field report here on QRPer.com about activating three islands located in the Connecticut River. For those islands, I enlisted professional help from a boat captain with the navigation experience and proper tools (like radar and maps) to access those islands.

The final boat-only accessible island is Minnie Island, located in the middle of Gardner Lake in the town of Salem, Connecticut. I DO have experience kayaking on a Lake, thanks to my uncle, who has two kayaks and has taken me out on Tillson Lake in New York’s Hudson Valley a number of times. Unlike the challenges the river posed, I felt like I could manage the lake on my own. I did need a kayak, though, which I didn’t own.

I had to do some kayak research then. In case you didn’t know this, different kayaks have different specifications on how much weight they can hold. I’m a big guy, six foot five inches tall. Add me, plus a backpack of radio equipment, and I needed to be sure I didn’t sink.

I started on eBay, looking for people selling used kayaks. There are all different kinds of kayaks. Some made for the ocean and dealing with waves and others for casual lake paddler. Some have rudders, some have small, sealed cockpits and some even have motors. I had no idea how serious you could get with all of the accessories and options. I was really looking for something simple.

After striking out on eBay, I found a fishing supply store at the end of the Connecticut River that also had kayaks you could rent. I visited their web site and was happy to see that they were having an end of season clearance sale, where they were selling their rentals. I visited their shop and after looking at my options, I ended up buying an Old Town Vapor 10 kayak. It came with a paddle and life jacket and it was 50% of the price new. A great bargain. The added benefit is now I own my own kayak…a friend suggested that now that I do, there might be IOTA activations in my future.

What sold me on the Vapor 10 was the open cockpit. No trying to squeeze myself in and plenty of room to bring a backpack with the radio equipment in-between my legs. Also, I was able to fit it into my Jeep Wrangler.

Next stop, the Gardner Lake Boat Launch, which was about a 30 minute drive North. Continue reading Conrad’s Kayak POTA Activation on Minnie Island →

Digital Modes, Field Reports, FT8, News, Portable, POTA, QRP, SSB

Part 3: N2YCH and K1PCN’s Dayton Hamvention Trip QRP POTA Rove

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Many thanks to Conrad (N2YCH) who shares the first of a three-part field report series outlining his 2023 Hamvention rove with Peter (K1PCN). Click here for Part 1 and Part 2.

Part 3: Dayton Hamvention Trip QRP POTA Rove

By Conrad Trautmann, N2YCH

The Bonus State

Welcome to part three of a three-part POTA rove story where Peter, K1PCN and I decided to activate six state parks for our Parks on the Air Activated States Award on the drive to the Dayton Hamvention.

In installments one and two we activated Delaware, Maryland, West Virgina, Pennsylvania, Ohio and Indiana. I thought we had exhausted all our state activating possibilities for this trip, until…Peter said, “you know, Kentucky is not that far away. And, by the way, there is a park down there that has never been activated digitally…”

Really? I’m in.

We decided that on day two of the Hamvention, we would leave in the afternoon and make our way to Kentucky, which was just over an hour away. While we were standing on the line to get into the Hamvention on Saturday morning, one of the people near us mentioned that the Voice of America Museum was open until 9pm that night and he was considering going.

I stopped at the VOA booth in the Hamvention and picked up a brochure and on our way to Kentucky, Peter suggested that maybe on the way back, we stop in.

Kentucky

Our best bet for a Kentucky POTA activation, which was recommended by a fellow digital activator at the South West Ohio DX association dinner we attended the night before, was Big Bone Lick State Historic Site (K-3779).  According to the Internet, it was named Big Bone Lick because of the “mammoth artifacts that were found and because of the salt springs that animals drank.” I found that it was impossible to tell anyone the name of the park without a smirk or chuckle in return.

When we arrived in Kentucky, we drove around Big Bone Lick park looking for a place to activate. Apparently, there are buffalo at the park…however, we did not activate near the buffalo. We found an unused picnic area and split up.

Literally about five minutes after I set up and got on the air, a group of moms with five-year-olds celebrating one of their birthday’s showed up. One of the mom’s apologized and explained that I had found her secret place in the park…but by then, I had almost completed my activation and was ready to break down.

I don’t mind it when people come up and ask about what I am doing, I’m always happy to explain ham radio to anyone who’s curious. Activating a park surrounded by a group of five-year-olds was a new experience that I hope to never repeat. Here is a photo of my setup at Big Bone Lick.

Given that it was later in the day by the time we arrived, Peter chose 40 meters, and I took 20 meters. 22 QSO’s later, here’s my coverage using the Buddipole with the 17’ MFJ whip and the Elecraft KX3 at 10 watts.

VOA

On our way back, Peter called the VOA museum to confirm they would be open late that night and then that became our next destination since we had to pass right by on our way back to Dayton. Continue reading Part 3: N2YCH and K1PCN’s Dayton Hamvention Trip QRP POTA Rove →

Articles, Digital Modes, Field Reports, FT8, News, Portable, POTA, QRP, SSB

Part 2: N2YCH and K1PCN’s Dayton Hamvention Trip QRP POTA Rove

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Many thanks to Conrad (N2YCH) who shares the first of a three-part field report series outlining his 2023 Hamvention rove with Peter (K1PCN). Click here for Part 1, and look for Part 3 next week!

Part 2: Dayton Hamvention Trip QRP POTA Rove

By Conrad Trautmann, N2YCH

Pennsylvania

Welcome to part two of three of the Hamvention QRP POTA Rove. If you missed part one, you can find that installment here.

Early on Thursday morning, May 18, 2023, Peter, K1PCN and I headed from Morgantown, West Virginia north to Pennsylvania to activate K-8920, the PA 223, Pennsylvania State Game Lands. While the park covered a large geographical area, we were able to find a parking lot not far off the highway that made it easy for us to get to and activate.

Peter spotted a nearby gazebo which was also a viewing area and hiked over to it to activate. If you look closely in the photo below, you can see it in the distance behind the sign and my antenna.  I stayed with the Jeep and set up on the tailgate using the Buddipole vertical.

Since it was early in the day, we used our frequency strategy of Peter on 40 meters and me on 20 meters. My QSO map here shows some decent DX for QRP on 20 meters at 8am ET.

Ohio

We traveled North towards Pittsburgh on Interstate 79 and then West on Interstate 70, passing through West Virginia again and then stopped at K-1934, Barkcamp State Park in Ohio.

I tuned my antenna for 17 meters and Peter activated on 20 meters.

I managed to activate the park, but it was slow going for me on 17, so when Peter finished up on 20, I changed to 20 meters and got a few more on that band just for good measure. Thinking that the slow QSO’s could have been the radio, I did switch to the IC-705 here, but that did not make any difference. It could have been conditions or our location. I did have better luck on 20 meters than 17. And I don’t know about you, but I can never go for just ten QSO’s. I feel like I need a few extra ones just in case. Here is a photo of me set up at a picnic table next to my antenna. Continue reading Part 2: N2YCH and K1PCN’s Dayton Hamvention Trip QRP POTA Rove →

Digital Modes, Field Reports, FT8, Hams, News, Portable, POTA, SSB

Part 1: N2YCH and K1PCN’s Dayton Hamvention Trip QRP POTA Rove

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Many thanks to Conrad (N2YCH) who shares the first of a three-part field report series outlining his 2023 Hamvention rove with Peter (K1PCN). Look for Part 2 next week!

Part 1: Dayton Hamvention Trip QRP POTA Rove

By Conrad Trautmann, N2YCH

Peter, K1PCN and I are both avid Parks On The Air activators here in Connecticut and neither of us has ever been to the Dayton Hamvention in Xenia, Ohio. At the urging of others who have attended in the past, we made the decision to attend this year and while we were making the trek out, we wanted to activate parks along the way to add to our activated US states award. We originally planned to activate six states and ended up with one bonus state for a total of seven. This is how things looked before and after the trip.

 

I would like to begin by saying that attending the Hamvention was a great experience. If you have not been to it, I would like to encourage you to attend if you can.

You may have heard about the flea market, the vendor booths, the forum sessions or the food trucks, which are all good, but the best part for me was being in the presence of other hams with similar interests. I struck up conversations and shared stories with many other hams. Everyone was very nice and willing to share their experiences, which is a great way to pick up some good tips.

I am extremely glad I went. If you are on the fence about going, I would recommend you plan to go next year. Oh, and I got to meet this guy in person….

Now on to the rove…

I planned the trip to get as many states as possible. Both Peter and I had already activated CT, NY and NJ, so we did not need to stop in those states as we passed through. I had scoped out some parks near the Delaware and Maryland border, so I looked at those first.

My main criteria on park selection was to pick parks that would be easy-off/easy-on to the main highways we would be traveling to save time on driving. Here is the route map we followed.

We strategized on how we would activate the parks when we got to each one. Peter is an SSB activator, and I am a digital activator. We would not be colliding on the mode of operation. We did need to be on different frequencies though.

In the mornings, Peter took 40 meters and I used 20 meters. Later in the day when the bands opened up, Peter moved up to 20 meters and I bumped up to 17 or 15 meters. Using this strategy, we had no problems getting our minimum ten QSO’s to activate while operating at the same time. Peter also reminded me to bring a handheld and we did park to park QSO’s on 2 meters and 70cm.

As for equipment, I used my Elecraft KX3 transceiver, but I did bring an IC-705 as a backup.

On the first stop in Delaware, I used an Elecraft AX1 antenna but for the rest of the trip I used a Buddipole tripod equipped with a Versa-T with a 17’ MFJ whip tuned to the frequency I was operating on with 50’ cable and an above the ground counterpoise. Continue reading Part 1: N2YCH and K1PCN’s Dayton Hamvention Trip QRP POTA Rove →

Digital Modes, Field Reports, Guest Posts, News, POTA, QRP

N2YCH’s “Fly-Away Kit” QRP POTA Activation

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Many thanks to Conrad (N2YCH) who shares the following field report:

“Fly-Away Kit” QRP POTA Activation

by Conrad Trautmann, N2YCH

4/15/2023

The National Association of Broadcasters convention is an annual event that takes place every April at the Las Vegas Convention Center in Las Vegas, Nevada. This year, I traveled to the show for work and made some time to activate a park and get another state ticked off my “Activated US States” list. I also didn’t want to miss getting the Spring 2023 Support Your Parks Weekend activator award.

A colleague suggested I visit Red Rock Canyon National Conservation Area, K-7494. The park, which is operated by the US Bureau of Land Management, has a 13 mile scenic drive that has various parking areas you can stop at to get out and explore. Red Rock requires a reservation to visit and costs $20 to enter the scenic drive area. There are places within the park you could activate for free, but I took advantage of my military veteran benefit of free admission and drove the trail and activated at one of the scenic overlooks.

Before I traveled, I had to decide what radio and antenna to bring. I selected the Elecraft KX3 and the AX-1 antenna. Not having to check a bag was key to deciding what to take.

I packed the cables, battery and computer in my brief case and the radio and the AX-1 antenna went into my carry-on bag. I did get pulled out of line by the TSA at JFK airport, but the TSA agent was very nice and just asked a few questions and let me through with no issues.

Before I traveled, I took a look at the park page on the pota.app website and saw that Colin, AK7LV, was the park leader in QSO’s. I looked him up on qrz.com and sent an email asking if he had any good advice for me or could give me some pointers. He responded quickly with suggestions of his favorite locations, how to get to them and even a suggested location where I could pick up a twofer at a trail that crossed through the park. He said I should call him when I get into town. Continue reading N2YCH’s “Fly-Away Kit” QRP POTA Activation →

Digital Modes, Field Reports, Guest Posts, News, Portable, POTA

Scott’s Georgia Parks On The Air weekend field report

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Many thanks to Scott (KK4Z) who shares the following post from his blog KK4Z.com:

Georgia Parks on the Air at FD Roosevelt SP K-2173

Friday evening, Mary K4SEZ and I traveled to FD Roosevelt State Park for a weekend in a very nice cabin. The cabin is located on Pine Mountain with some exceptional views. As you can guess, I brought some radios with me. I went QRV right before 1800 hrs. local to make sure all my equipment worked prior to the contest. Besides, the contest I had a regional HF net that I needed to check into Saturday morning. The contest starts at 0800 hrs local Saturday and the net was also at 0800 and lasted about 20 minutes.

Friday night was amazing! Twenty and forty meters was wide open. Using FT8, I made 223 contacts between 1800 hrs Friday and 0300 hrs Saturday morning. I worked stations as far west as Japan and Australia and as far east as Rwanda, Ukraine, and European Russia. Unfortunately, the rest of the weekend was not near as exciting. Between 0800 hrs Saturday morning and 1230 hrs Sunday, I made an additional 477 contacts. The bands were up and down and the pace was a little slower. I worked 48 States and 34 countries when it was all said and done. Sunday morning had an opening on 10 meters and I made 19 contacts many into Europe. In total, I had 700 contacts.

My antenna was my tried and true homebrew 28.5-foot random wire antenna which I named my K4SWL antenna as the original idea from Tom.  It uses one 17-foot counterpoise.  On this trip, the wire I used was 14 ga (I think), coated Flexweave I got from The Wireman many years ago.  I was using some 20-something gauge I got from SOTABeams but because I use this antenna a lot, I worried about the thin wire breaking.  I use a 9:1 UnUn with a 1:1 current BalUn to help with matching.  The antenna is matched by an LDG RT/RC 100 matching unit.  This is fairly new to and so far I like it. The tuning circuit out by the antenna helps keep stray RF out of the shack. It was also quite windy here Friday night and Saturday.  The antenna held up well.  The only issues I had were some of the sections on my MFJ push-up pole would collapse affecting the tuning.  This pole is probably nearly 20 years old and should be replaced.

The radio was “The Rock” my IC-7300. I ran FT8 the whole time at 35-45 watts and the temperature gauge on the radio never moved past cool. Now that the FTDX10 has found a home in the shack, it’s nice to have my old friend back in the field with me.

The cabin is located on the ridge line of Pine Mountain, elevation ~1250′ ASL. Besides great views, it also gave my antenna a large aperture which may account for the many DX contacts I made.

I mainly worked FT8 as I also had to listen to a couple of conferences on the Internet and didn’t want to disturb my wife when she was doing things other than radio. We had a nice weekend away and of course, being able to bring radios is a huge bonus. When I get back home and settled, I may send the log to the GA POTA people. I don’t really contest anymore but they might find it useful for cross-checking.

Here is a YouTube Video of the activation.

Click here to view on YouTube.

Click here to read this post and much more at KK4Z.com!