Category Archives: Portable

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

An Awesome Day for Parks On The Air

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by Teri (KO4WFP)

It is Wednesday, December 27th, the fourth day of my winter-break Florida POTA trip. The night before, we left the rainfly off the tent and were treated to a gorgeous view of the waxing gibbous moon. My brother Joseph was delighted and, while I worked on my article for that day, he lay back on his new Thermarest sleeping pad and took in the night sky.

Full moon through tent top: Collier-Seminole Photo by Joseph Leffek

I opted to sleep in until 8 AM enjoying the cooler morning air. Then it was time to get a shower and rid myself of four days of grunge. Breakfast was a leisurely affair. The mosquitos were less prevalent so I let Daisy relax on the tarp next to us and watch the comings and goings of our neighbors. But by 11 AM, I was getting antsy – time to head out and attempt two activations.

Google Maps

We drove east on the Tamiami Trail/US Highway 41 heading toward Big Cypress National Preserve (K-0659). The road is straight with guardrails on both sides as there is either wetlands or a canal on either side of it.  Occasionally there is a break in the foliage and the mangroves come into view.

Bird life is abundant in the area. We saw egrets, wood storks, cormorants, anhingas, and, my favorite bird, kingfishers. At my previous QTH in Savannah, I heard kingfishers at times but rarely saw them. On this drive, I saw eight or nine perched on the utility wires beside the road and gleefully noted each one.

We stopped at the Nathaniel P. Reed Visitor Center to pick up a map and figure out a place for my activation.

Big Cypress National Preserve Visitor Center

I chose the H.P. Williams Roadside Park as it was the closest place to the visitor center and had the opportunity for wildlife viewing. The parking lot was crowded and it was easy to see why. The site has a boardwalk from which one can view alligators and a nice picnic area in which several families ate lunch.

I found a tree away from the crowd and set-up the Tufteln EFRW. In the process of doing so, a little girl came up and peppered me with questions. Then her father and sister joined us. As soon as I was set up, I let them hear my callsign as well as the two girls’ names in Morse Code. It was nice to share my love of the hobby as well as Daisy, on whom they lavished some attention. What I think was a yellow-rumped warbler also paid Daisy and I a visit during the activation. Continue reading An Awesome Day for Parks On The Air →

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

WD8RIF takes his dog and his KX2 on a bicycle-portable POTA activation

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Many thanks to Eric (WD8RIF), who shares the following field report via his website WD8RIF.com:

by Eric (WD8RIF)

On Saturday, November 4, 2023, I performed a successful bicycle-portable two-fer activation of Lake Hope State Park (K-1968) and Zaleski State Forest (K-5455) in Ohio as part of the Parks on the Air (POTA) program.

On a beautiful and warm early November afternoon, I bicycled the Moonville Rail Trail, on what used to the Marietta and Cincinnati Railroad (wikipedia article) right-of-way, from the tiny village of Mineral, through Zaleski State Forest, diverting from the rail trail near Lake Hope to ride to the Mountain Bike Trailhead overlooking Lake Hope within the state park, for my two-fer activation of the state park and state forest. I was carrying my KX2 Mini Travel Kit on the bicycle, and I was pulling my little dog Theo in a trailer behind the bicycle.

From the Moonville Rail Trail website:

This 10-mile rail trail takes visitors through the beautiful woodlands of southeast Ohio, including Zaleski State Forest; the communities of Zaleski and Mineral; and the Lake Hope State Park wetland areas. The corridor holds water on both sides of the trail, creating a wetland area that is home to numerous species of flora and fauna.

Additional points of interest along this trail are two unique and historic tunnels. King’s Hollow Tunnel (also known as King Switch Tunnel) is a 120-foot structure carved through the rock and lined by a series of 12×12 wooden beams. The Moonville Tunnel is brick-lined and has a long history of train accidents, earning the tunnel a reputation for being haunted.

After parking my car at Mineral, I began my ride on the leaf-covered Moonville Rail Trail at 1645 UTC and soon encountered the first landmark of the ride: the 120′ long, timber-lined King’s Hollow Tunnel.

Leaf-covered Moonville Rail Trail
The leaf-covered Moonville Rail Trail,near Mineral
King's Hollow Tunnel
Entering King’s Hollow Tunnel
King's Hollow Tunnel
Exiting King’s Hollow Tunnel

Riding through the very dark tunnel and continuing west on the Moonville Rail Trail, I soon came to a succession of ponds. Rumor has it that a pair of nesting bald eagles fish these ponds, but I have yet to see them.

Ponds along the Moonville Rail Trail

Ponds along the Moonville Rail Trail
Ponds along the Moonville Rail Trail
A small bit of railroad history along the Moonville Rail Trail.
A small bit of railroad history along the Moonville Rail Trail.
Leaf-covered Moonville Rail Trail
More leaf-covered Moonville Rail Trail

Continuing west, and now being well inside Zaleski State Forest, I soon came upon the brick-lined Moonville Tunnel.

Moonville Tunnel

Moonville Tunnel
Entering Moonville Tunnel

After passing through the Moonville Tunnel, I was forced to divert from the Moonville Rail Trail and follow a gravel road before re-joining the Moonville Rail Trail about a mile further on. (When CSX abandoned the rail line in the early 1990s, they took everything: rails, ties, ballast, and all the bridges. Two of the bridges west of Moonville Tunnel have yet to be replaced.) I was pleased that my new narrow knobby bicycle tires were reassuring on the rough gravel road, but I can’t say Theo in the trailer enjoyed this portion of the ride much.

Back on the Moonville Rail Trail, and continuing west, the rail trail was almost 100% leaf-covered. Continue reading WD8RIF takes his dog and his KX2 on a bicycle-portable POTA activation →

Field Reports, Guest Posts, News, Portable, QRP, Travel

More of the Unexpected at Collier-Seminole State Park

21 Comments

by Teri (KO4WFP)

It was Tuesday, December 26th, the third day of my winter-break Florida POTA trip. As my brother Joseph and I were moving at a leisurely pace this morning, I decided to work in a quick activation at the campsite as the antenna was already in the trees from the prior night’s activation.

Even though this second activation at Little Manatee River wouldn’t count toward my 2024 goal, it was still a valid activation. POTA is like eating potato chips – You can’t do just one! I had five QSOs on 40 meters to begin and then 14 on 20 meters before calling QRT. We needed to get on the road and head south.

QSO Map for Little Manatee River SP Day Activation http://tools.adventureradio.de/analyzer/

My brother desperately needed a new Thermarest as the old one he brought on the trip was not working for his back. He had always wanted to visit an REI store. We found one in Sarasota-Springs and stopped by. He found a better sleeping pad and I found a few items I needed to add to my arsenal – a small brush for cleaning sand off items, a camp pillow so I didn’t have to lug my pillow from home in the future, more bug-repellant wipes, and a smaller quick-dry towel. Happy with our purchases, we resumed our journey southward.

We had lollygagged enough in the morning there wasn’t sufficient time for an activation on our way to the next camping destination – Collier-Seminole State Park (K-1847). The drive was nearly all interstate and not that exciting. It never ceases to amaze me how many people live in Florida!

Google Maps

Collier-Seminole State Park is located in southern Florida as you head toward the Big Cypress Wildlife Management Area and Everglades National Park. The Big Cypress Swamp was the last refuge of the Seminole Indians. Collier-Seminole State Park lies along the Tamiami Trail, a road from Tampa to Miami that was constructed in the early 1900’s and runs through the Big Cypress Swamp. An advertising mogul Baron Collier (for whom Collier County and Collier-Seminole State Park are named) was a significant investor in the Tamiami Trail and, in fact, bankrolled the completion of the east-west portion of the road.

After you enter Collier-Seminole State Park, on the right is the last existing Bay City Walking Dredge. This dredge was used to build the Tamiami Trail and would follow drilling and blasting rigs. The dredge dug a canal which provided rock fill for roadbed drainage of the completed road. It is a unique and huge piece of equipment.

Some parks are easier to activate than others. This was not one of the those. My first hint should have been when I was asked to read the rules when checking in. The first rule is nothing in the trees. I mentioned I am a ham radio operator and asked if it be ok to put an antenna up with an arborist line that won’t damage the tree. That request was met with an immediate and emphatic “No!” Rules are rules and, as I brought my hitch mount and SOTABeams mast on the trip, I could work around that restriction.

I planned to set up my antenna and get on the air in the comfort of my tent as I had at the previous park – Little Manatee River State Park. However, running right in front of our site and all through the campground were power poles. This campground was also much larger than our previous one. I wasn’t sure how much RFI I might get from the surrounding RVs and power lines as we appeared to be the only tent at this site. Continue reading More of the Unexpected at Collier-Seminole State Park →

Antennas, Field Reports, News, Portable, POTA, QRP

W6CSN: Activation 72 of the Presidio of San Francisco National Historic Site

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

Activation 72

by Matt (W6CSN)

Today’s activation of the Presidio of San Francisco National Historic Site (K-7889) was pretty standard for a mid-winter POTA outing. Normally, I wouldn’t bother to write it up on this blog. After coming here 72 times there is not much new to say about it. Nevertheless, maybe somebody will find value in this field report.

Even though the weather was dry this afternoon, the radio operating began in the car where I used the FT-818 to net 14 contacts on 17 meters. I must admit being warm while doing a POTA activation is not bad!

The Bencher is a breeze to operate on the center console.

After a while, the calls started to dry up so I extended the antenna fully to get on 20 meters, but the best SWR I could get was 3:1. I suppose the lack of good bonding of the coax shield to the car body, which I’ve read about in other blog posts on qrper.com, was responsible for the less than optimal antenna match.

After taking down the badly matched roof mount antenna , I flipped the car around and backed into the parking space to set up my usual 20 meter station on the trunk lid with the antenna clamped to a steel post.

The trunk lid is where I usually operate from when at this park.

At the same time, I switched radios to the Mountain Topper MTR-4B. Previously the current draw of the FT-818 had dropped the battery voltage to 12.6v, but with the lighter load of the MTR, the voltage rebounded above 13v. The MTR-4b is designed to accept 13v, something the other radios in the MTR series are not recommended for. However the SWR in this antenna configuration was 1.0 to 1 so I felt okay to run the radio at the full 5 watts with the higher voltage.

The Wolf River coil provides a good match on 40 meters.

Unfortunately, 20 meters wasn’t performing all that great, yielding a mere four contacts. The POTA website showed several JA’s activating parks on 40 meters, so I added the Wolf River coil to the base of the antenna in hopes of hearing them. Alas, no copy, so I put out a few CQ POTA calls of my own on 7.062 MHz. W6OOD responded from Southern California, but my report was not particularly strong. And, with the light fading I decided to call it a day.

QSO map by http://tools.adventureradio.de/analyzer

Activation #72 netted a total of 19 QSOs on three different bands, coast-to-coast. Not bad for an unremarkable Friday afternoon ham radio outing.

Field Reports, Guest Posts, News, Portable, POTA, QRP, Travel

Expect the Unexpected with POTA

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by Teri (KO4WFP)

It was Monday, December 25th, the second day of my POTA winter-break trip in Florida. I chose Florida for this trip to avoid bone-chilling temperatures. What I didn’t and couldn’t avoid, though, was rain. The weather forecast before I left Bloomingdale, Georgia promised rain off and on during the first part of the trip.

Google Maps

I had two park activations planned for Monday, December 25th – Dade Battlefield Park (K-3615) in the morning and Little Manatee River State Park (K-1898) in the afternoon. After breaking camp at Paynes Prairie State Park and getting on the road early, a steady rain began as I drove southward toward my first activation. Well, phooey. I scrapped the Dade activation and headed instead for Little Manatee River State Park, the location of our next campsite.

Little Manatee River State Park is named for the Little Manatee River which flows 40 miles from a swampy area near Fort Lonesome snaking through the landscape before emptying into Tampa Bay. It is one of the few Florida rivers that were never significantly dredged or altered therefore it is one of the most pristine blackwater rivers in Southwest Florida. Park visitors can fish along or paddle in the river. There are also hiking and horseback trails in the park.

We arrived early at the park and, as it rained off and on, killed time in the car (much to Daisy’s dismay) until our campsite was available. The weather forecast had promised rain all day; but by 1:30 PM the worst of the rain appeared behind us.

We are stuck in the car!

My brother wanted to hike in the park and I figured why not work in an unexpected activation to make up for the one I planned but scrapped earlier in the day. The closest park not requiring an entrance fee was Moody Branch Wildlife and Environmental Area (K-6317). Daisy and I loaded up and off we went.

The 960-acres of Moody Branch was formerly used for grazing cattle and farming. It was purchased as a gopher tortoise mitigation park when developers needed an off-site alternative to on-site protection of rare species being negatively impacted by development. The site features hiking and horseback trails for the public and is managed with gopher tortoises and the Florida scrub jay in mind.

The drive was a pleasant one. We passed fields and fields of strawberries as well as plant nurseries. By the time we arrived at Moody Branch, the sun played peek-a-boo from behind the clouds and the wind vigorously whipped across the open fields and pastures across from the preserve.

Next to the parking lot was a small covered pavilion with a picnic table, but that was exposed to the wind. Walking past it and around a large oak tree presented a sheltered area. I snagged a branch, set up the EFRW antenna, and put my Helinox chair near the feed-end with Daisy lying down nearby. By this time, the sun was out and removing my hoodie and donning my goofy hat for the sun was a necessity. Continue reading Expect the Unexpected with POTA →

Articles, Field Radio Kits, Field Reports, News, Portable, POTA, QRP, Videos

Radio Therapy: Fresh air and a little backyard QRP portable

37 Comments

So far, my favorite thing about the Elecraft KH1 is this: it’s a constant radio companion.

Since 2020, I’ve always had a small field radio kit in my vehicle.

My Venus SW-3B kit, which is packed in a headrest pouch, is one example.

When I’m traveling, or just find an opening in the day, I can deploy that field kit and do a little POTA or even SOTA. I know I have a full field radio kit ready to go.

As many of you know, I do a lot of traveling back forth from my QTH to my hometown each week to do caregiving for my mom and dad. Most of the POTA sites I activate are along that corridor between Asheville and Hickory, North Carolina. Having a radio kit in the car at all times makes impromptu activations effortless.

Until the KH1, though, I never had a field radio kit that could so easily live in the backpack/shoulder bag I carry with me everywhere…my EDC bag.

EDC (Everyday Carry)

Linus understands.

Since 2000 or so–back in the days when I was living and traveling extensively in Europe–my EDC bag (sometimes a laptop bag, messenger bag, or backpack) has become a bit like a safety blanket.

I feel lost and unprepared without it.

When I have my EDC bag, I know I have my basics and essentials for working on the road, taking care of small repairs, administering first aid, and even coping with unexpected overnight trips. My EDC bag has the basics for taking care of all of these things and more.

And now, my EDC bag has a tiny QRP field radio kit.

Healing waves…

I’ve been staying with my parents a lot lately–most of the week–doing caregiving for my sweet mother.

This week in particular, I’ve been grabbing my KH1 and using it for a little backyard “radio therapy.”

You see, there has been no time in the schedule this past week for even short POTA activation forays, as much as I’d love that (more on this below).

Instead, I’ve been catching quick radio sessions in my parents’ back yard.

If I worked you this past week, this was my station:

On Sunday afternoon, January 7, 2024, I grabbed my KH1 from the backpack and took it on two short POTA hunting sessions.

In both cases, I walked to the very back of my parents’ yard to distance myself from most of the QRM that surrounds their house.

During the late afternoon session, I decided to grab my camera and make a video.

Video

Here’s a real-time, real-life (short) video of my late afternoon POTA hunting session.  As with all of my videos, I haven’t edited this one. In addition, I have monetization turned off on YouTube, although that doesn’t stop them from inserting ads before and after my videos.

Note that Patreon supporters can watch and even download this video 100% ad-free through Vimeo on my Patreon page:

Click here to view on YouTube.

Being Present & Thank You

We admitted my mother into Hospice care on Monday (the day after I made the video above) and we don’t expect her to be with us much longer.

Because of Hospice, she is at peace, pain-free, and surrounded by her family. Mom made it clear to all of us that she is ready for the next adventure.

All of my energy is going into being present with her, my wife and daughters, my father, and my sister during this time.

Our community here on QRPer.com has lined up some amazing field reports and articles that will allow me to take a break from writing and, frankly, give me something to read and enjoy as well.

Thank you all for your support and kindness during this time.

72,

Thomas (K4SWL)

Accessories, How To, Morse Code, News, Portable

Emily’s simple way to attach a magnetic key to your field clipboard

5 Comments

Many thanks to Emily (NI1Q) who writes:

For those of us not fortunate enough to own an Elecraft KX series or KH1, I have a project that is a quick and dirty way to anchor your magnetic key to a clipboard. All that is needed is a fender washer from the hardware store and a hot glue gun. The best (ie, most magnetic) washer was the one marked ‘ALB’, but just take your key with you and try out what they have. If you find one you have to slide off, that’s getting there.

1) Affix the washer to the clipboard with hot glue. I recommend heating the washer with a heat gun first so you have time to reposition it if desired.

2) Put the washer on your key, and the glue on the washer. Position and press, and avoid moving it around while the glue cools (about a minute). If you do need to reposition it, remove the key, heat with the heat gun, replace the key and reposition.

I’m right handed so the key is on the right so I don’t hit it when I’m logging.

———

In case you are wondering about the chip in the carrier, I am working on a cordless interface between the key and a CW decoder for the IC-705. The plan is it will use the IC-705’s bluetooth connection to send audio to a Pi Pico for decoding, and then it will send back dits and dahs to the keyer. It should be able to be powered by a lightweight 3.7v rechargeable battery. This is in the early stage, but is showing promise.

Cheers,
Emily

Field Reports, Guest Posts, Mobile, News, Portable, POTA, Travel, Videos

2,112 miles as AI7LK in the US Pacific Northwest

17 Comments

by Vince (VE6LK/AI7LK)

As always there are links within the article. Click one! Click them all! Learn all the things! 

In December of 2023, I found myself with a surplus of vacation from my employers, and my Brother who’s move-in date to his new home got suddenly moved forward to just before Christmas. I was able to get time off work and make an epic road trip with POTA stops along the way to both allow me to have some radio fun and to give my body a stretching break. My trip would take me from my home in Alberta, westward through British Columbia, southward into Idaho, Washington, Oregon and I even made it as far as Northern California to see the Pacific before turning around and heading back home.

Along the way, I activated at 14 stops which totaled 21 parks in all after factoring in the 2-fer, 4-fer and 5-fer stops! This was a total of 301 actual QSOs netting 508 after the x-fers were computed in. It was a mix of CW and voice with an average of 21 contacts per stop.

There were many highlights of the trip, and naturally spending time with my brother and his wife were at the top of the list–despite the work of moving into a house–followed by the simply spectacular scenery along the route and the route planning itself. While this trip was decided upon on a Thursday evening and I was on the road the following Monday, I still found about 10 hours to research points of interest along my routes and look for POTA entities that had either not been activated yet or were CW ATNO, having only had a Phone or Digital activation previously. For the most part, these were the stops I targeted as my waypoints.

The Columbia River is nearly a mile wide at Rooster Rock SP

Driving along the Columbia River Gorge on I-84 approaching Rooster Rock State Park felt like driving along the base of the Grand Canyon, given the 1000′ height of the cliffs beside me. Rooster Rock State Park (K-2850), is notable for two reasons. 1 – it’s a 5-fer activation point – my first 5-fer stop ever doing POTA, and 2 – it’s windy as heck as you can see in this short video I took for Charlie W7RTA who told me, via Discord, it would blow [what’s left of my hair] off my head.

Click here for 7 seconds of the Columbia River Gorge wind whipping the hair off my head!

Certainly Rooster Rock was a highlight given it’s the only 5-fer activation I’ve ever done. It was activated two hours after a 4-fer at Willow Creek State Fish and Wildlife Area (K-10646). I only learned about the multiples after chatting with folks on the POTA Discord server.

It was a short drive from Rooster Rock SP to the home of KJ6VU in Oregon City, Oregon. While I’ve worked with George on the Ham Radio Workbench Podcast for nearly three years, I’d never met him in person until this trip. It was such a treat to spend time with him.  George is the creator of the Packtenna that so many of us love to use. As luck would have it, the KJ6VU repeater was due for a replacement and scheduled for the next morning, and I was able to put my skills in racking (installing) repeaters to good use. After we finished the repeater I departed and did some performance testing while southbound on I-5 to test its range.

The repeater crew. L to R: Josh K6OSH, Nick KF7SOM, the Author, and George KJ6VU

Along the way I got to have a coffee break with Nick Smith NT3S who I had met via Discord. Nick can be found activating parks and going overlanding on weekends. Thanks Nick for the time to have a break with you!

Over the next several days I spent time in Grants Pass Oregon assisting my brother and his wife to get moved in. Grants Pass even has a Harbor Freight Tools and I was able to get some shopping done! So as it turns out I wouldn’t be slugging boxes every day and there was a bit of a break during my visit to go out and play radio. I know the POTA program is especially popular in the United States and I’d heard that every entity has been activated at least once, which is very different from here in Canada where many parks are untouched. In my research and thanks to the parks added in the autumn of 2023, there are some in the system that had never been activated. On one Saturday afternoon I was able to visit one of these parks -Cathedral Hills Trail System- and work 72 contacts in under an hour on SSB.

Cathedral Hills Trail System, Grants Pass Oregon
Tall trees at Cathedral Hills Trail System, Grants Pass Oregon

On the following Tuesday, I headed out from Grants Pass to head to California if only to tick off the box on POTA’s website saying I’d activated there. I had no idea that Highway 199 would be so scenic. I activated six entities on this day.

At the end of Highway 199 is Tolowa Dunes State Park (K-1202). The photo at the top of this article is on the dunes and at the coast of the Pacific Ocean near Crescent City CA. Yes, I walked along the surf despite the threatening weather. It also allowed me the luxury to park within the dunes themselves to do my activation with a spectacular view. Continue reading 2,112 miles as AI7LK in the US Pacific Northwest →

Field Reports, Guest Posts, Portable, POTA, Vintage

IX1CKN: Packing the PRC-320 on an activation of Tsatelet Natural Reserve

8 Comments

Many thanks to Christian (IX1CKN) who shares the following field report:

Activation of I-0120

by Christian (IX1CKN)

After “infecting” Andrea (IW0HK) with the use of military surplus for POTA activations, on December 26, 2023, I decided to repeat the experience. I brought the Plessey PRC-320 to the 791 meters of the Tsatelet Natural Reserve / I-0120.

With its 11 kg weight, two images came to mind. The first was from an article on QST dedicated to “green radios,” where it was said: “if you’re not fit, carrying one on your back will make you.” So true, even truer.

The other reminded me of all the Army officer cadets (who attended courses at in Aosta for years) that, specializing in transmissions, carried stations (also) on short waves on their shoulders around my Valley to ensure connections (I’ve seen some beautiful photos just in the past few days, here: http://www.rosti1.it/fixed/ja_AUC_BN/).

After 10 minutes of walking, I didn’t have much more left. Wonder how they made it…

After dispelling the mysticism, once at the destination, I set up the PRC in manpack configuration: with its whip vertical antenna and the counterpoise consisting of four coils to be laid on the ground.

Finding a frequency in 20 meters, I started calling. Propagation in phases, but a satisfying activation emerged, with 40 contacts scattered throughout Europe in 70 minutes on the air, including 5 “park to park.” Among them, even IW0HK, who was at Montemario Park.

A small curiosity: with the Christmas Eve activity, I had exhausted the dedicated logbook since 2013 for portable operations. To continue, I used the “Radio Adventure Journal” that I had seen mentioned on a Facebook group (being available on Amazon [QRPer affiliate link]).

It’s nice to see a program like POTA spreading like wildfire, not only in practice but also for some “accessories.” Thanks to everyone for the contacts.

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

Pairing the Elecraft KH1 and my Tufteln No-Transformer (aka, Speaker Wire) Antenna

6 Comments

On Thursday, November 30, 2023 I had a chunk of afternoon open to fit in some Parks On The Air time. My travels took me near one of my favorite local parks: the Zebulon Vance Birthplace Historic Site (K-6856).

As I packed my car that morning, I brought along some of my Mountain Topper transceivers as well. The plan was to first shoot a video comping the new Elecraft KH1 to these venerable SOTA machines, then do a POTA activation with the KH1 and a new-to-me kit antenna.

The Mountain Topper comparison took a bit longer than I had anticipated (surprise, surprise) so my POTA time was actually somewhat limited. If interested, my KH1/Mountain Topper comparison was posted several weeks ago–click here to check it out.

Tufteln No-Transformer EFRW

One goal of my afternoon activation was to finally put my new-to-me Tufteln “No-Transformer” end-fed random wire antenna on the air.

You might recall that I shared a campsite–during the W4 SOTA campout last year–with good friend Joshua (N5FY) of Tufteln fame and fortune. Being the antenna guy he is, Joshua brought along a full antenna building station and set it up on our picnic table. That first afternoon at camp, he gave me a kit to build this random wire antenna. Thanks again, OM!
These “No-Transformer” random wire antennas are designed to be paired with a good ATU–either external or internal. This type of antenna couldn’t be more simple.

Since there’s no transformer (no 9:1, etc.) the ATU does all of the heavy lifting to make a match. While this might not seem like an efficient way of doing things, one benefit of this design is that there’s no feed line: the radiator and counterpoise connect directly to the radio if your radio has a built-in ATU.  I’ve found that there’s some inherent efficiency in this approach.

Just two wires (radiator and counterpoise) connected directly to a BNC with a little strain relief.

The antenna is identical to the speaker wire antenna I built in the field and have used so extensively over the past few years. Joshua’s design is just much lower-profile and more compact.

When I built this particular antenna, I decided to go for a much longer length than any other random wire I’ve made to date. The idea was to have an antenna that might possibly match 80M. Joshua might correct me, but I believe we cut something between 70-80 feet for the radiator.

At Vance, I deployed this antenna into some short evergreens that surround the picnic shelter. It wasn’t an ideal deployment, per se, but adequate for a quickie activation!

I’ve learned that the length I chose for this radiator isn’t ideal for most of my ATUs to hit some bands. I will end up trimming this antenna a bit until I find the right length. I’m tempted to shorten it for matching on 60 meters, then build another 9:1 random wire to hit 80 and possibly 160 meters.

Setting up the KH1 took no time at all. I did discover during this activation that I needed to better secure the KH1 to the table. Wind gusts were tugging on the random wire a bit (as the trees swayed) and it would move the KH1 around on the table. The KH1 weighs less than a pound, so it’s super lightweight! This will be easy to fix next time.

Gear:

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On The Air

I tuned the EFRW antenna on 30M and got a perfect impedance match.

I started calling CQ POTA and hunters replied!

In fact, I worked ten stations in exactly ten minutes. Two of them were Park-To-Parks–thanks KD8IE and KC3WPW!

I worked two more stations for a total of only twelve logged. I would like to have spent more time on the air, but I had two appointments on my schedule that afternoon.

QSO Map

Here’s what this five watt activation looked like when plotted out on a QSO Map:

Activation Video

Here’s my real-time, real-life video of the entire activation.  As with all of my videos, I don’t edit out any parts of the on-air activation time. In addition, I have monetization turned off on YouTube, although that doesn’t stop them from inserting ads before and after my videos.

Note that Patreon supporters can watch and even download this video 100% ad-free through Vimeo on my Patreon page:

Click here to view on YouTube.

Thank you!

Thank you for joining me on this short activation!

Had I realized how low I was running on time at the beginning of this activation, I might have made the antenna deployment and my commentary a bit briefer to have more air time. That said, I don’t do POTA for the numbers, I do it because it’s amazing fun and such a positive part of my day. This little activation was no exception! Pure radio fun.

I hope you enjoyed this field report and my activation video as much as I enjoyed creating them.

Of course, I’d also 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 really appreciate the support.

As I mentioned before, the Patreon platform connected to Vimeo make it possible for me to share videos that are not only 100% ad-free, but also downloadable for offline viewing. The Vimeo account also serves as a third backup for my video files.

Thanks for spending part of your day with me!

Have a brilliant weekend, friends!

Cheers & 72,

Thomas (K4SWL)