All posts by Thomas Witherspoon

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

Postcard Field Report: Pairing my new-to-me Palm Pico with the TX-500 at K-6856!

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I finally snagged one.

In the world of lightweight, super-compact QRP radio kits, there is one key that is, essentially, a legend: the venerable Palm Pico.

The Palm Pico has a stellar reputation because it’s super lightweight, can retract into its housing to protect it in transport, and can be directly attached to various radios with a specific mounting assembly or via Velcro or magnets.

The Palm Pico has been out of production for some time now and, they’re so highly desired, they often fetch the original purchase price or even higher on the used market. Truth is, so few Pico owners are willing to sell that very few of these keys ever enter the used market.

I was very lucky, indeed, when a long-time Patreon supporter reached out and offered to sell me her Palm Pico and Palm Mini paddles along with a KX2 mounting assembly. She had noticed how my eyes lit up when Josh (KI6NAZ) showed me his Palm Pico paddle on an HRCC Livestream in February.

The price she offered was amazingly low. She told me that she favored some of the other keys in her collection and wanted to give me the opportunity to own them. They were like-new with all original boxes and accessories.

How could I resist? I’m so grateful.

I really look forward to using the Palm Pico and Palm Mini this year. I’m especially eager to hook up the Palm Pico directly to the KX2 with its custom mounting bracket.

I decided to take my Palm Pico on a maiden POTA activation at the Vance Birthplace on April 18, 2023.

Postcard Field Report

I’ve got a load of videos in the pipeline and to keep from falling behind publishing them, you’re going to see more of my slightly shorter “Postcard Field Reports” for the next couple of weeks during my travels.

These postcard reports contain all of the core information, just less wordy.  (In theory!)

Zebulon Vance Historic Birthplace (K-6856)

I arrived at the Vance Birthplace and checked in quickly with the park staff. There were no picnic shelter reservations that day but there was a family with children eating a picnic lunch when I arrived. Continue reading Postcard Field Report: Pairing my new-to-me Palm Pico with the TX-500 at K-6856! →

News, QRP, QRP Radios, Surveys

Survey #1 Results: What QRP transceiver do you turn to the most in the field?

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This past weekend, I posted the first of several surveys on QRPer.com asking:

“What QRP radio do you tend to use the most in the field?“

The responses started flowing in immediately and within the first day we had already accumulated over 400 votes.

I turned off the survey this morning at 5:00 EDT with a total of 696 responses.

Survey Results

Here’s a pie chart showing the top 26 results in the survey. To see detail, you will need to click on the image below (or click this link) to enlarge it in a new window:

The top choice was the Elecraft KX2 which received 131 votes. I’ll admit, this was my top choice, too.

The KX2 is the most compact, full-featured radio currently on the market. I know of no other radio that weighs less and is smaller in size that also sports options for an internal battery and internal ATU. It’s also one of only about five radio models on the market that has a built-in microphone.

The KX2 is one of the pricier QRP transceivers on the market, so in that sense, it did surprise me that it was number 1.

The Yaesu FT-817 and FT-818 series transceivers took second place with 105 votes.

Since this radio enjoyed one of the longest production runs in the history of amateur radio–and the price floated around $650 US new–we shouldn’t be surprised. It has so many good things going for it; click here if you want a deep dive into why I think the 817/818 is a fantastic field radio.

The Icom IC-705 took third place with 101 votes.

The IC-705 is an incredibly versatile radio as well and it packs some serious performance! It’s also one of the priciest QRP radio on the market at around $1,400 US. Click here to read my full review of the IC-705.

These are only the top three radios–check out the full results below to see how the top ten ranked among a total of 48 entrants.

Full Results…

If you would like to see the actual number of votes for each of the 48 radios in this survey, click the link below to load the rest of the page:
Continue reading Survey #1 Results: What QRP transceiver do you turn to the most in the field? →

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

Postcard Field Report: Pairing the Elecraft KX3 and Tufteln Random Wire

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Believe it or not, the 2023 Hamvention and Four Days In May is only ten days away at time of posting.

Where in the world did the time go–?

If you’re going to Hamvention, I hope to meet you there. When I’m not floating around, I’ll be hanging out at the Ham Radio Workbench/Halibut Electronics table: 3011.

I’m super excited about attending, but I’ve so much to prepare in advance. Every day between now and then is planned out to the max with family activities and projects.

That, and being an introvert (this might surprise some of you), I have to mentally prepare myself for hanging out with 30+ thousand other human beings. I’ll need ten days for that alone. If I appear tired at Hamvention or FDIM, you’ll know why! Ha ha!

Postcard Field Report

I’ve got a load of videos in the pipeline and to keep from falling behind publishing them, you’re going to see more of my slightly shorter “Postcard Field Reports” for the next couple of weeks during my travels.

These postcard reports contain all of the core information, just less wordy.  (In theory!)

Tuttle Educational State Forest (K-4861)

On Wednesday, April 5, 2023, I had a bit of time in the early afternoon to do a POTA activation. Tuttle Educational State Forest was low-hanging fruit as my errands that day took me within a stone’s throw of the park.

I arrived a bit before noon and took some time to record a Hike and Talk video (which will be published in the next couple of weeks).

After the hike, I set up my Elecraft KX3 and paired it with my Tufteln End-Fed Random Wire antenna. Continue reading Postcard Field Report: Pairing the Elecraft KX3 and Tufteln Random Wire →

News, QRP Radios, Surveys

Survey 1: What QRP HF transceiver do you turn to the most in the field?

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Last week, Phil shared results from a survey he conducted on Facebook regarding the most popular radios used for POTA. The survey was informal and, of course, only open to those in the POTA Facebook community.

The survey confirmed my suspicions that both the Yaesu FT-891 and Xiegu G90 were among the top radios used by POTA activators. Heck…I hardly know a POTA op that doesn’t have one of these two rigs–!

The survey also made me realize that I live in the world of QRP and often forget that the vast majority of ham radio operators do not, necessarily.

QRP Radio Survey Series

I thought it might be fun to publish a series of surveys over the course of the next few weeks that specifically focus on QRP transceivers.  Each survey will contain only one question.

These will all be informal surveys, but I’d like to have a fairly specific question in mind with each and would ask that you think about that question and answer it as honestly as you can. Many of these are subjective, so this isn’t always an easy task.

This first question, though? It’s easier to base on fact…

What QRP radio do you use the most in the field?

At the end of the day, our “favorite” radio might not be the one we actually use the most in the field.

In this first survey, please select the QRP radio you use most often in the field. 

Notes:

  • If you see a glaring omission in this list–a popular, mass-produced QRP radio I’ve overlooked–please comment and I’ll add it to the list.  Otherwise, simply select the “Other” choice and provide the manufacturer and model.
  • This list is pretty comprehensive, but I didn’t include some of the more obscure models, nor did I include vintage or Japanese Novice models simply because I see so few people using them as daily drivers in the field.
  • For this survey, I included radios with a maximum output power of roughly 20 watts.
  • The survey form has no place for comments, so if you’d like to tell us about your selection (even if it’s your only QRP radio), feel free to leave a comment on this post!

Thank you!

Survey 1:

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

Picnic Blanket POTA on a beautiful spring day at South Mountains State Park

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Monday, April 10, 2023, was a spectacular day weather-wise. Spring was out in all its glory making it impossible to stay indoors.

That day, I was driving back to the QTH and made a little detour to the Clear Creek Access of South Mountains State Park.

According to my calculations, I had about one hour to play radio. I did have a firm deadline to hop off the air because I needed to take my daughter to a tennis lesson that afternoon. Couldn’t be late to that!

South Mountains State Park (K-2753)

As I pulled into the Clear Creek Access parking area, I noticed a family of five grabbing picnic supplies from their car.

For the first time ever, there was going to be competition for the one single picnic table at the Clear Creek access!

Actually, there would be no competition at all because there was no way in the world I’d ever take over the picnic table when a family could use it. 🙂

They had a much better reason to use a picnic table than me. Frankly, I was super pleased to see someone else besides a POTA activator using that table. I get a real thrill out of seeing families enjoying our public lands.

Plus, I don’t need a table to play POTA so it was a brilliant excuse to pull the picnic blanket out of the car and set up under a beautiful antenna support…I mean, tree.

For this activation, I decided to use my Penntek TR-45L and, for an antenna, two 28 foot lengths of wire.

Continue reading Picnic Blanket POTA on a beautiful spring day at South Mountains State Park →

Accessories, News, Portable, POTA

Philip shares battery sizing calculator spreadsheet and POTA radio survey results

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Many thanks to Philip (KA4KOE) who shares the following two notes:

Battery sizing calculator

I developed the following spreadsheet as a response to all the folks asking “what size battery should I get“?

That’s one of those questions one can’t answer accurately without more information, so I created a spreadsheet.

Click here to download the spreadsheet (Rev 1 updated Feb 1, 23).

Popular POTA radios

I also recently ran a poll on the Facebook POTA group asking what radio they primarily used for POTA. The sample size was 1,148 votes.

Here are the rankings by percentages:

1. Yaesu FT-891: 25%
2. Xiegu G90: 9%
3. Icom IC-7300 and IC-705: 7%
4. Yaesu FT-857D, FT-991A, FT-817/818: 4%
5. Xiegu 6100, Yaesu FT-897D, Elecraft K/KX series: 3%

I cut off the poll at below 3% as there were 60 entries for various radios.

I’m not really surprised by the top 3 rankings.

Antennas, Articles, News, Portable, POTA, QRO, QRP, Radio Field Craft, Skills, SOTA

Do I allow antenna wires to touch tree branches during field activations?

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Many thanks to Keysrawk on my YouTube channel, who asks:

Do you usually try to use an isolator or do you often let your wires touch branches by just pulling them over? When you deploy 20m EFHWs, for example, do you try to avoid having an end touch a branch and only have the throw line going over the branch? I tried to go through your videos and look but you don’t often mention how far you pull the wire up and possibly over. Thanks!

This is a great question!

Before I answer, I’d like to add a little context:

  1. I am a QRP operator. The maximum amount of power I use in the field is 10 watts, but 99.5% of the time, it’s actually 5 watts or even much less.
  2. I am answering this as a field operator, meaning I’ll be referring to temporary antenna deployments.

That said, the quick answer is no, during park and summit activations, I do not worry about my antenna radiator wire touching tree branches.

I do isolate the end of my wire antennas from tree branches and leaves, but I don’t worry about other parts of the radiator touching.

Also, all of my antenna wire has some sort of jacket–I don’t run bare wire in the field.

More often than not, when I deploy a longer wire antenna–say, a 40M EFHW–I simply use a tree branch to support the apex of the antenna if I deploy it in an inverted vee configuration. Continue reading Do I allow antenna wires to touch tree branches during field activations? →

Accessories, Field Reports, Grab And Go, Morse Code, News, Portable, POTA, QRP, QRP Radios, Reviews, Videos

POTA Field Report: Testing my CP Gear Tactical Aircrew/Pubs Bag with FT-817ND and Armoloq TPA-817 Pack Frame

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Last year, during a Black Friday sale, I took a calculated risk and purchased a bag I hoped would accommodate my Yaesu FT-817ND that has been outfitted with an Armoloq TPA-817 Pack Frame.

CP Gear Tactical Aircrew/Pubs Bag

Rod (VA3ON) first introduced me to CP Gear Tactical–a  military pack manufacturer based in New Brunswick, Canada.

I’d had their their Aircrew/Pubs Bag with Padded Tablet Pocket on my wish list since the Ham Radio Workbench podcast episode where we talked about backpacks and pouches. CP Gear Tactical manufactures a wide variety of gear primarily for the Canadian military market. Everything is made either in Canada or the US (or both).

I contacted CP Gear Tactical shortly after outfitting my FT-817 with the TPA-817 pack frame. I measured the frame carefully and asked if the interior padded pocket (which is actually designed to hold a tablet–might fit my radio.

I never heard back from them. I could have called them, but on Black Friday, when it was on sale for 20% off and free shipping, I decided to throw caution to the wind and simply purchase it. My total price in USD was something like $62 shipped.

As soon as I opened the CP Gear pack, the first thing I did was check to see if the FT-817 with pack frame would fit in the interior pocket.

Much to my surprise, it fit it perfectly!

Indeed, it’s as if the pocket were specifically designed to accommodate the FT-817ND/TPA-817 combo.

Even the middle Velcro strap fits precisely in the middle of the radio between the pack frame side extensions. The strap holds the rig securely; once, I accidentally fumbled while holding the bag and even though it was upside down, the FT-817 remained securely inside. The strap held it in place.

The bag has loads of room inside. In fact, you can very easily transform it into a fully self-contained field radio kit.

I actually give a small tour of this pack in my activation video below, so if you’d like to see some of the exterior pockets, I would encourage you to check it out!

Zebulon B. Vance Birthplace (K-6856)

On Tuesday, April 11, 2023, I once again popped by the Vance Birthplace for a leisurely POTA activation–I thought this activation, in particular, would be a good one to test my new Aircrew/Pubs bag! Continue reading POTA Field Report: Testing my CP Gear Tactical Aircrew/Pubs Bag with FT-817ND and Armoloq TPA-817 Pack Frame →

Antennas, Articles, Guest Posts, News, QRP

Dale uses WSPR to test counterpoise orientation

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The CHA MPAS Lite

Many thanks to Dale (N3HXZ) who shares the following guest post:

Does your antenna counterpoise orientation matter?

by Dale (N3HXZ)

I am an avid SOTA and POTA activator and love field operation. I use a portable vertical whip antenna with a single counterpoise for my antenna system and have always wondered if orienting my counterpoise would provide some signal strength gain in a particular direction.  I decided to run a series of tests using WSPR to gather field data, and use statistics to answer the question:

Does one counterpoise orientation favor another in terms of average signal strength?

WSPR is a great tool for antenna testing. You can study various antenna configurations by making some WSPR transmissions and then checking the data on the WSPRnet database to see how well the signal was received at various stations located all over the world. You have to be careful in interpreting WSPR data though as receiving stations have different antenna and radio configurations, and the band propagation can vary rapidly at times. So how do you take advantage of all the data you receive from stations and draw some meaningful conclusions? I have found that using proven statistical theory in analyzing the transmitted signal strength received from individual stations can provide you results that you can confidently trust.

So what statistical algorithm is helpful?

For antenna signal strength comparison between two configurations, you can use an independent two-sample t-test with a one-tailed t-test evaluation. It sounds like a mouth-full, but it is quite simple. For our purposes, the t-test compares the average signal strength at a given receiving station from two different antenna configurations. The one-tailed test validates or invalidates the hypothesis that one antenna configuration produces an average signal strength greater or less than the other antenna configuration.

The testing requires that you run WSPR long enough to gather multiple reports at a single receiving station for both antenna configurations. Using the signal strength reports, you compute the average signal strength and the standard deviation of the signal strength over the sampled data points. Excel can easily provide that data.  With this information and the number of sample points for each antenna configuration (they can be different), you then run a calculation by hand or in Excel to compute the ‘t’ value.

This ‘t’ value is then compared to a critical value for the number of sampling points from a ‘Students t table”. If the ‘t’ value is less than the critical value you can confidently conclude that the hypothesis is false and therefore conclude that there is no significant difference in the mean value of the signal strengths between the two.  If the ‘t’ value is greater than the critical value you can accept the hypotheses that one antenna configuration produces a greater or less average signal strength than the other configuration. Continue reading Dale uses WSPR to test counterpoise orientation →

Accessories, Articles, Field Radio Kits, Field Reports, Grab And Go, Morse Code, News, Portable, POTA, QRP

Testing my new Headrest QRP POTA Field Kit!

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I love field radio kits.

If you’ve read my “Anatomy of a Field Kit” series, you’ve likely gathered that field kits are a bit of an obsession. [Yeah, understatement alert!]

My field kits roughly fall into two main categories: modular and fully self-contained. My modular kits are ones where components like the battery, antenna, throw line, key, and radio are in separate pouches and can easily be combined to make a complete station before I leave for an activation.

My fully self-contained kits are ones that quite literally have everything needed to perform a park or summit activation in one pouch or box. A good example that I’ve documented here is my MTR-3B field kit.

For more on this, again, check out my “Anatomy of a Field Kit” series.

Vehicle kit

If you’re a devoted park and/or summit activator, I think it’s important to keep a dedicated kit kit in your car at all times. Why?

  • It’s ready to grab for impromptu activations
  • It’s handy in case of road-side emergencies in remote areas
  • It’s always  accessible to demonstrate amateur radio to those who are curious
  • It’s always always there for those times when you hadn’t planned to play radio, but the opportunity presents itself

I always have a full radio kit in my Subaru and over the years, I’ve changed and adapted it. For the most part, though, it’s been located in the trunk/boot and lives with anything and everything else I keep back there. Sometimes, it’s in the way when we need to fill that trunk space with family items for a trip or when we’re hauling things around town. Other times, it’s floating/sliding around freely in the back.

On long family trips, I’ve been known to store radios under the floor, but it’s a true hassle to remove them because I have to remove anything in the trunk before lifting the floor.

Contraband I hid in the car during our two month Canada trip last year.

I’ve always wanted a way to store my kit in the car in a dedicated space. In the past, I’ve tried to make a kit that could fit under the driver’s seat–thinking that might be ideal–but there’s very little clearance under it and it’s difficult to remove.

Enter the BROG Headrest Pouch Kit

Before I placed my initial order for the Blue Ridge Overland Gear (BROG) Gadget Bag, I checked out other items on their website. One that immediately caught my attention was their Headrest Kit.

It consists of a Velcro panel that fits around a vehicle headrest and a pouch (or pouches) attach to it.

BROG caters to Overlanders and vehicle storage/organization is huge in that community. The headrest kit makes a lot of sense: it’s using space that’s accessible, doesn’t interfere with any passengers, is off the floor, and is otherwise underutilized!

The big questions, of course:

  1. would the pouch offer enough space to store an entire radio kit,
  2. and would the kit weight too much for the Velcro back to hold it in place?

I asked for the Headrest Pouch Kit ($47.99) to be sent with my Gadget Bag order.

BTW: Big thanks to BROG for giving me flexibility with this order. Since I had no experience with their gear, I asked that they send me a list of items and allow me to evaluate them, then pay (full price) for what I decided to keep. 

Would it work?

I knew I’d need to store a very small transceiver in this dedicated pack. A few could potentially fit the bill–namely the:

  • Mountain Topper MTR-3B
  • Venus SW-3B
  • QCX-Mini
  • TEN-TEC R4020

I eliminated the QCX-Mini from this list because it’s mono band (mine is set for 20M) plus, I really love the field kit I already designed for it. Same for the MTR-3B–the kit I built for it is now time-tested and I love it as-is. The R4020, while quite compact, is the largest in this group of wee rigs. Continue reading Testing my new Headrest QRP POTA Field Kit! →