WB3GCK QRP Amateur Radio

Rare Weekday Activations

Because of family obligations, my QRP-portable operations are usually limited to weekends. A change in plans this week freed up Tuesday through Friday mornings for some POTA activations. I needed to stop by my daughter’s house each day, and she lives about 10 minutes away from several POTA/WWFF entities.

French Creek State Park

I haven’t been up to French Creek State Park (K-1355, KFF-1355) in a while, so I thought it would be a good place to kick off the week. I operated near the Hopewell Lake boat launch, which is a busy place on weekends. On a Tuesday morning, however, there were very few people there.

Using my usual TR-35 (5 watts) and homebrew vertical, I logged 25 contacts. All but two were on 40M; I didn’t have much luck on 20M this time out. I also ended up with four park-to-park contacts.

Hopewell Furnace National Historic Site

On Wednesday, I made a return trip to Hopewell Furnace National Historic Site (K-0834, KFF-0834). I last activated this site back in October of last year. I parked my truck in a parking lot on the top of a hill. This would have been a great day for operating from a picnic table, but there were no tables to be found.

Parked among the blossoms at Hopewell Furnance National Historic Site (K-0834, KFF-0834)

Using the same setup as yesterday, I worked 36 stations. On 20M, I worked Germany, Finland, and France in rapid succession. There was also an Italian station calling, but other stations kept stepping on him. Unfortunately, I could only pick out part of the callsign. I also had one park-to-park contact (that I know of).

William Penn State Forest and Back to French Creek

William Penn State Forest (K-5481, KFF-4914) is another entity overdue for a re-visit. My destination today was the Hopewell Fire Tower, which is next to French Creek State Park. Although I’ve operated there many times over the years, this would only be my second POTA/WWFF activation.

I’ve always had good luck operating from Hopewell Fire Tower. As you would expect, this area has good elevation. Unlike some of the other adjacent POTA/WWFF entities, this location has great cell coverage.

Heading up the hil towards the Hopewell Fire Tower in William Penn State Forest

To keep things simple, I went with my Elecraft AX1 antenna and window mount. Since I used my TR-35, I was limited to 20M and 17M with the AX1.

Using my window mount and AX1 antenna near the Hopewell Fire Tower in William Penn State Forest

The band conditions weren’t great, so I thought the 10th POTA contact would never come. I had never been “skunked” before with the AX1, so I pressed on. After what seemed like an eternity, I finished up with 15 contacts, with three park-to-park contacts.

Since I had to pass through French Creek State Park to get to my daughter’s house, I stopped for a quick activation—or so I thought. This time I went with my 19-ft vertical. I thought, with the larger antenna, I could knock off ten contacts in no time flat. Ha!

Normally, 40M is my bread and butter band with the homebrew vertical. Not this time. I only made one contact on 40M (W6WU running QRP in Maryland), with the rest on 30M and 20M. It took so long to make my tenth contact, I really thought I was going to have a busted activation. Eventually, I logged number ten and called it a day.

I had two park-to-park contacts from French Creek and a nice contact with fellow Polar Bear VE3WMB. Michael was out portable in Ontario using an Alexloop and his brand new Xiegu 6100. His new rig sounded great in Pennsylvania.

Evansburg State Park

On Friday, I wrapped up my series of weekday activations with a visit to Evansburg State Park (K-1351, KFF-1351). The weather forecast was calling for heavy rain and gusting winds later in the day, so I hoped I could squeeze an activation in before it started. Ha!

When I got to the park, the skies were overcast, but there was no rain. I set up the 19-ft vertical and the TR-35. As soon as I got on the air it started drizzling. I got to work, hoping to beat the heavy rain. Ha!

It was another slow day for me on the air. I only made one contact each on 40M and 30M. Both were with WB8DTT in Michigan. There was more activity up on 20M, although several minutes passed between contacts.

The rain started coming down heavier, so I used a plastic shopping bag to protect the antenna from the rain. About 20 minutes later, I went out in the rain to tear down the antenna. I finished up with 15 contacts in the log, including a contact with a SOTA activator in Arkansas. I had one park-to-park contact today, but that station was operating from two parks.

My homebrew vertical wearing its raincoat at Evansburg State Park

So that wraps up my string of weekday activations. It’s not often that I get to go out during the week, so I enjoyed avoiding the weekend crowds in some parks. Although there seems to be a lot more hunters on the weekends.

73, Craig WB3GCK

Morse Code Day 2023

Happy Morse Code Day! This annual event honors the inventor of the code, Samuel F. B. Morse, who was born on this day in 1791.

Nearly 179 years after the famous “What hath God wrought” telegraph message was sent from Washington. DC, to Baltimore, you can still hear plenty of Morse Code on the ham bands. Amazing!

So, in observance of Morse Code Day, get on the air and launch some dots and dashes into the ether.

73, Craig WB3GCK

Windy Morning in Valley Forge

I’ve been slowly sneaking up on a POTA Repeat Offender Activator award for Valley Forge National Historical Park (K-0761), so I headed over there this morning for another activation. Now that the picnic areas and restrooms are open for the season, I drove to Varnum’s Picnic Area, one of my usual spots.

I was originally thinking of operating from a picnic table today, but the wind changed my mind. Instead, I parked in a remote corner of the parking lot and operated from the truck. My rig today was my trusty Penntek TR-35, along with my homebrew vertical.

I started on 40M and quickly made my first 10 contacts. I operated for about an hour, ending up with 28 QSOs in the log. Among those were four park-to-park contacts.

My location today at Valley Forge National Historical Park (K-0761). The dead tree in the background was really starting to sway in the wind.

As I got out of the truck to change bands on the antenna one last time, I heard a loud creaking noise coming from the wooded area behind me. It was a large, dead tree (aka a “widow maker”) swaying in the wind. Although it wasn’t directly behind me, I was certainly within striking distance if it fell to the side. Yep, it was time to take the antenna down and head home.

As I write this, we have some severe thunderstorms headed our way later. Time to batten down the hatches.

73, Craig WB3GCK

National Volunteers Week

I was honored to have been selected by Chester County ARES-RACES (CCAR) to represent our organization during National Volunteers Week. Our local served agency, Chester County Department of Emergency Services (CCDES) is highlighting volunteer organizations in social media posts this week. The image below, along with a nice write-up, was posted on the CCDES Facebook page yesterday.

My hat goes off to everyone who volunteers their time, especially my CCAR colleagues. Thank you for your service!

73, Craig WB3GCK

Back in Action Again

I have been mostly off the air for the past few weeks, dealing with more knee issues. The bum knee felt a little better this morning, so I headed out for some long-overdue QRP-portable operation.

I drove over to nearby Valley Forge National Historical Park (POTA K-0761) for a short activation this morning. There was a picnic table close to where I parked, so I didn’t have to haul my gear very far. (My knee thanked me.)

It was a great day for portable operations in Valley Forge National Historical Park (K-0761).

This morning, I used my KX3 (5 watts) and my AX1 antenna. I started out with the AX1 on a little tripod on the picnic table, but the KX3’s tuner seemed to struggle to find a match on 20M. I swapped out the 3-foot coax I was using for a 6-foot length I had on hand. That didn’t help. Next, I connected the AX1 directly to the KX3 and used the AXB1 bipod to stabilize it. After rearranging the radials a few times (I used three today), the KX3 eventually found a 1:1 match on 20M.

Once on the air, a station in Nevada kicked things off. After a few more, things slowed down. It seemed like I was stuck at eight QSOs for the longest time. Fortunately, things eventually picked up again, and I made enough contacts to qualify the activation.

My backpack. My activation today was a good decision.

The picnic table I was using was out in the open with no shade. The sun felt great; but when the wind kicked up, that was a different story. I decided to pack up and head home for lunch. My log for today had 14 contacts, with two park-to-park. My best “DX” today was a park-to-park contact with California on 15M.

It was nothing earth-shattering today, but it sure felt good to be back out there again.

72, Craig WB3GCK

Something Good in the Mail

Along with the usual junk mail yesterday, the mailman brought a couple of envelopes from the Straight Key Century Club (SKCC) QSL Bureau. Among the QSL cards I received, were two special ones.

First was a QSL card confirming contacts I made with K3Y stations during the annual Straight Key Month (SKM) event. SKM is held each January with event stations operating around the world. I didn’t have my best year in the event, but I worked K3Y stations in eight of the ten call areas in the continental U. S. I also worked SKM stations in Puerto Rico and Portugal this year.

K3Y Straight Key Month QSL card for 2023

Each year SKCC members submit designs for the K3Y QSL card, and members vote to select the final design. I always try to work some of the K3Y stations each year to ensure I receive a QSL card.

Another card I received was for the VC3Y Canadian Operating Event. Taking place during the month of September, this is an annual SKCC event that promotes the club’s many Canadian members. This year, I worked VC3Y/VY2 (Prince Edward Island) on 40M and 20M. I remember those particular QSOs because I was out bicycle-portable in a local park at the time.

VC3Y QSL card for the 2022 Canadian Operating Event

Sadly, when the mailman came by today, it was back to the usual junk mail.

73, Craig WB3GCK

POTA with the MFJ-1820T

I made a quick run down to Ridley Creek State Park (K-1414) for an early morning POTA activation. For a few minutes, though, I thought I might fall short of the 10 contacts needed to complete the activation.

I dusted off my old MFJ-1820T 20M whip antenna and thought I’d try it out on my window mount. Inside the truck, my Elecraft T1 tuner loaded it right up. After calling CQ a few times, I checked the Reverse Beacon Network (RBN). The first spot I received was from Costa Rica. So, the antenna seemed to get out OK. I was running about five watts from my TR-35.

The MFJ-1820T 20M whip on my old window mount

Things got off to a good start on 20M. I had a steady stream of callers for the first several minutes, and I was getting strong RBN spots to the west of me. Then, things slowed down. It was five minutes before the next QSO. Then another six minutes after that. I was beginning to consider the prospect of a busted activation when activity picked up again. I suspect it was just a bit too early on a Sunday morning.

After I had 11 contacts in the log, I switched to the Elecraft AX1 to give 17M a try. I didn’t hear much activity there, and the RBN wasn’t seeing me at all. I stayed with the AX1 and went back to 20M.

The activity on 20M started picking up this time around. When I wrapped things up, I had 20 contacts in the log, with two park-to-park QSOs. I didn’t have any DX contacts today, but I did work two Idaho stations.

I continue to be amazed at what you can do with five watts and one of these little whip antennas.

72, Craig WB3GCK

A Short But Sweet Activation

Pressed for time this weekend, I drove down the road to Valley Forge National Historical Park (K-0761) to get in a quick activation. I was only on the air for about 40 minutes, but it was a very productive outing.

The weather this morning was chilly but sunny and clear. The crowded trailhead parking lot I pulled into reflected that. I had the good fortune to find a spot where I could set up and not be in the way.

To keep things simple, I used my Elecraft AX1 and window mount, along with my KX3. It took me all of a minute to set up the antenna. I really like that about the AX1.

My location in the crowded trailhead parking lot. It's hard to see, but the AX1 is mounted on the passenger-side window with two counterpoise wires. — My location in the crowded trailhead parking lot. It’s hard to see, but the AX1 is mounted on the passenger-side window with two counterpoise wires.

Starting out on 20M, the calls came fast and furious for the first 10 minutes or so. The second station to call was F4ILH. Given my 5 watts and little antenna, I was thrilled with that. Later on I worked IK4IDF up on 17M. The little AX1 never ceases to amaze me.

At the end of my brief activation, I had 18 contacts in the log. Along with the two DX contacts today, I had one park-to-park QSO.

Not too bad for an early morning, spur-of-the-moment activation, I suppose.

72, Craig WB3GCK

Raddy RF75A Shortwave Radio

Since I purchased the Raddy RF750 Portable Multimedia Player a year ago, it has become my favorite portable receiver. So, when the folks at Radioddity asked me if I’d like to have a look at a new upgraded version, I jumped on it. The new radio is the Radioddity RF75A Shortwave Radio, and it includes some interesting new features.

[Disclaimer: In the interest of full disclosure, Radioddity sent this radio to me free of charge to evaluate and review. However, the opinions expressed here are entirely my own and were not influenced by the vendor.]

What It’s All About?

Like its predecessor, the RF75A is a multimedia device. It covers the AM, FM, Shortwave, Weather, and VHF bands. In addition, you can play audio files from a micro SD card. In Bluetooth mode, it’ll play audio from an external source. You can also connect a computer to the USB connector and use the RF75A as a speaker.

Some specs from the Raddy Website include:

FM: 64-108MHZ (Step Value: US: 10KHZ, EU: 9KHZ)
AM: 520 -1710 KHz
SW: 4.75 – 21.85 MHz
WB: 162.400 – 162.550 MHz
VHF: 30 – 199.975 MHz
TF Card Max Capacity: Max 256GB
Audio Format: MP3, WAV, WMA
Size/Weight: 3.6’’ x 2’’ x 1” / 3.7 oz
Components & Accessories: 1 x RF75A, 1 x Storage bag, 1 x Lanyard, 1 x Wire antenna, 1 x Type-C cable, 1 x Earphone

The internal 1000mAh battery is charged via a USB-C connector, which is handy for a portable radio. The RF75A also has a built-in flashlight and an “SOS” mode. In the SOS mode, the flashlight flashes and the radio emits an ear-piercing siren.

At the time this post was written, the RF75A was selling on the Radioddity website for $52.99 (USD).

Major Improvements in the RF75A

While the basic functions of the RF75A and RF750 are similar, there are some big changes in the RF75A. The first thing you’ll notice is the digital display and digital tuning. I found the analog tuning on the RF750 a little touchy and the frequencies hard to read. The RF75A’s digital tuning makes tuning much easier.

One interesting improvement in the RF75A is an app that lets you control the radio from your smartphone over a Bluetooth connection. While the RF75A is pretty simple to operate as it is, the app makes it even easier.

Screenshot of the RF75A Android app, which allows you to control the radio from your smartphone.

My Impressions

The first thing that struck me is the RF75A’s small size. It’s smaller than an Altoids tin and thinner than the RF750, so it’ll easily fit in your pocket.

The Raddy RF75A (left) compared to the RF750. Besides the digital display and controls, the RF75A has a slimmer profile making it more “pocket friendly.”

Like the earlier radio, the sound quality is impressive. Listening to the FM band, the sound through the speaker has a rich sound you wouldn’t expect from such a small radio. The supplied earbuds are comfortable and also sound great to these old ears. The RF75A seems to have a little less bass than the RF750, but the sound is still very good.

I found the reception on the AM broadcast band to be very good, easily pulling in local stations. Because of high noise levels, my home location isn’t the best place for testing the shortwave bands. However, using the scan function, I was able to find several shortwave stations. I should note that the RF75A only receives in AM on the shortwave bands. So, if you want to listen to SSB or CW signals, you’ll have to look elsewhere. It comes with an antenna wire (approximately 10 feet long) that you can clip onto the built-in antenna to improve reception.

On the VHF band, I programmed in some local 2M repeaters and a few public service frequencies to test it out. Using the buttons on the radio, I found the tuning steps too coarse to zero in on some frequencies. Using the app, however, it was a simple task to enter the frequencies and save them as presets. Reception was good, but there’s no squelch setting. So, you’ll hear some background noise between transmissions.

The memory card function works great and gives you a choice of four different play modes. I set it to play my MP3 files in random order. You can also choose from six different EQ settings. Using the RF75A’s Bluetooth mode, I was able to pair it to my cell phone and play audio files that way.

I also tested the alarm function. I like having the option to have the radio turn on instead of sounding an alarm. The alarm sound is a loud series of beeps, so I’d rather wake up to music.

The smartphone app is easy to install and makes it easy to operate the radio (especially for my old eyes). The Android version of the app, however, requires the manual download and installation of a .apk file. I would feel safer getting the app through the Google Play store, instead of downloading it from an unfamiliar website. Apple iPhone users, however, can get the app from the Apple app store.

Once installed, the app requires access to your phone’s location in order to pair with the RF75A. I’m not sure why the Bluetooth pairing depends on location. In any event, I only allow access to the phone’s location when I’m actually using the app, and I close the app when I’m not using it.

While the Operational Guidelines booklet provided with the radio is sufficient to get you up and running, it’s not without some issues. The wording is confusing in some places, and I came across a few errors and formatting issues. Despite these editorial shortcomings, I had no problems figuring out how to use the radio.

The Radioddity website claims 7-8 hours of use from the 1000mAh battery. I haven’t actually measured it, but that seems about right. The USB-C charging port is handy, too. I can charge it using my cellphone charger or a portable power bank when I’m camping.

The last function I evaluated was one of the more important features for me: the weather alert function. To test it out, I set up the RF75A in the “Alert” mode in time for the weekly NOAA Weather Radio test. The alarm went off as expected, and boy, did it ever go off! Like the RF750, the weather alert triggers an extremely loud siren. Along with the siren, the light on top of the RF75A flashes, just like the SOS mode. I really wish there was the option to just activate the weather radio in response to an alert. Or, at the very least, be able to adjust the volume of the siren. As it is, I can’t imagine using it in a campground at night.

The Bottom Line (for me, at least)

All in all, I really like this little radio. It’s small in size, weighs next to nothing, and sounds great. I like that it’s simple to operate without having to navigate through a bunch of menu options. The smartphone app is a terrific improvement that further simplifies things.

Since I received it, the RF75A has seen a lot of use around the house, and I plan to take it along on camping trips and travel. Now, if there was only a way to tone down that weather alert, I’d be a very happy camper.

73, Craig WB3GCK

Mixed Bag Weekend

I had two different portable operations this weekend—a mixed bag of sorts.

Yesterday morning, I took part in an EmComm exercise with my local ARES-RACES group. We have a relatively new network of Vara FM digipeaters and Winlink gateways around the county, and the exercise was intended to try them from various locations.

For this exercise, I deployed to the local high school, where I operated “stationary-mobile” from the parking lot. My task was to connect to the county Emergency Operations Center (EOC) and send a Field Situation Report using Winlink over Vara FM on 2M. Then, I connected to the EOC using VarAC and sent a text file containing my Field Situation Report data. I was running 5 watts for both voice and data, so, technically, this was a QRP operation.

Winlink session on my Evolve laptop. This was my first time using the steering wheel tray, and it worked great.

My setup in the truck worked great. I used one of those plastic steering wheel trays to support my little Evolve laptop. I used my trusty old Icom IC-207H dual band rig and a Signalink for the data. Both the IC-207H and the Yaesu FT-8800 I used for voice were powered by separate deep cycle batteries. While everything worked fine, I have a couple of cables I’m going to build to simplify the battery connections.

My setup for Vara FM. The radio was powered by the deep cycle battery on the floor.

This morning, I went to nearby Evansburg State Park (K-1351) for a quick POTA activation. I used my TR-35, T1 tuner, and my 19-foot vertical mounted on my truck. (I didn’t take any pictures today, but, then again, there wasn’t anything special about my setup.) In about an hour, I logged 30 QSOs, including three park-to-park contacts.

While tuning around looking for park-to-park contacts, I worked a station operating with the Straight Key Century Club’s callsign, KS1KCC. My last contact of the day was with NL7V in North Pole, Alaska, on 17M. It’s always a thrill for me to work an Alaskan station. Paul gave me a 229 report, but I’ll take it.

72, Craig WB3GCK