Month: July 2024

Flight of the Bumblebees 2024

Yesterday was the annual Flight of the Bumblebees (FOBB) QRP contest, a four-hour sprint sponsored by The Adventure Radio Society. It’s been a couple of years since I last took part, so I was glad to get out for a couple of hours this afternoon. Prior to the contest, I signed up to be a bumblebee station and was assigned bumblebee number 82. 

I operated from a picnic area in nearby Valley Forge National Historical Park (US-0761, KFF-0761). There were several picnics in progress, so I headed to an area well away from them. I found a nice shady spot under the trees, where I set up my table and chair. Except for having to swat the occasional bug, it was a comfortable spot.

My operating position under some nice shady trees
My operating position under some nice shady trees

My rig was an Elecraft KX3, running 5 watts. I dusted off my trusty homebrew 19-foot vertical and put it to use for this event.

In general, the bands weren’t all that great. Most of the signals I heard were weak, and there was considerable fading on the bands. A few contacts were a real struggle. 

The FOBB activity was surprisingly brisk when I first started, but slowed dramatically as the contest wore on. In about two hours and a half hours of operating, I ended up with 22 contest QSOs. Fourteen of those were with fellow bumblebees. Before I shut down, I came across a POTA station and had a quick park-to-park contact outside of the contest.

Although I was in a POTA entity, I didn’t spot myself or call “CQ POTA.” However, my FOBB contacts were more than enough to complete an activation.

Given the conditions, I did better than I expected. Thanks to those stations that hung in there to pull me out of the noise.

72, Craig WB3GCK

My AliExpress Whip on the Air

I had a chance to use the inexpensive whip I bought through AliExpress recently. While it performed well enough, I encountered a couple of minor quality issues. That’s certainly not surprising, given its $18 USD price tag. 

I made an early morning trip to Ridley Creek State Park (US-1414, KFF-1414). I coupled the AliExpress whip with my homebrew loading coil. My rig today was my Penntek TR-35 (5 watts, CW). 

Extending the whip, I noticed that two of the sections were pretty tight and took some effort to pull them out. Better tight than loose, I guess. Another issue is that the crimp that holds the mounting stud in the bottom section of the antenna was a little loose. When the antenna was fully seated in the mount, I could still rotate the antenna. 

My $18 (USD) whip from AliExpress mounted on my homebrew loading coil
My $18 (USD) whip from AliExpress mounted on my homebrew loading coil

Because this whip is longer than a quarter wave on 20M, I didn’t extend the first section from the bottom. Using an antenna analyzer, I was seeing SWR readings similar to my MFJ-1979 whip. The SWR readings seemed stable. So, I guess the suspect crimp is making a good enough connection. 

Band conditions seemed so-so this morning. Despite that, I logged 25 contacts on 40M and 20M in an hour, including three park-to-park contacts. I didn’t work any DX stations today, but I worked a station on the west coast in Washington on 20M. 

Even with its issues, the whip did a pretty decent job this morning. It won’t replace my MFJ whip, but it will have a place in my antenna arsenal.

72, Craig WB3GCK

My Wounded Whip

A while back, I ordered a 5.6M/18.4 foot. telescopic whip from a seller on AliExpress. I didn’t really need it, but having seen them on the Interwebs, I was curious to see what you get for $18 USD. Heck, at that price, why not take a chance? 

You can find these whips all over AliExpress. (I have also seen them on Amazon for about $10 more.) One nice thing about them is they are 7.5 inches shorter than an MFJ-1979 when fully collapsed. So, it might fit in backpacks easier. The shorter collapsed length is due to having 14 telescoping sections compared to the MFJ-1979’s 10 sections. Because of its thinner metal and lack of a reinforced base, the AliExpress whip weighs 4.4 ounces/125g less than the MFJ whip. Of course, the other obvious advantage is the incredibly low cost. 

There are some downsides though. The threads are metric (10mm), so you need an adapter to use it with a ⅜-24 mount. Fortunately, adapters are readily available as well. The other downside that I’ve noticed is that the metal they are made of is pretty thin. (More on that in a bit) The MFJ whip has a heavy stainless steel reinforcement at the bottom, while the AliExpress whip does not.

My antenna arrived from China about a week and a half later. It came wrapped in several layers of bubble wrap with a tough plastic outer wrap. I eagerly opened the package, but I was disappointed to see that the bottom section was damaged. It looked like either someone dropped something heavy on it or Big Foot stepped on it. As I mentioned previously, the metal is pretty thin.

While traveling half-way around the globe, this telescopic whip antenna encountered some rough handling.
While traveling half-way around the globe, this telescopic whip antenna encountered some rough handling.

When I finished uttering every expletive in my vocabulary, I contacted the seller through the AliExpress app and sent pictures of the damage. They promptly shipped out another antenna, and they didn’t want the old one back. So, I set the wounded whip aside, while I awaited its replacement.

The replacement whip arrived 6 days later, which is pretty impressive for a shipment from China. Happily, this shipment arrived intact. I would be remiss if I didn’t give props to the HUI BANG TE Store on AliExpress. Their customer support was top-notch.

When I get a chance, I’ll take the inexpensive whip out to a park to give it a go. I laid the AliExpress whip next to the MFJ-1979, and it looks like collapsing one section from the bottom on the AliExpress whip makes it about the same length as the MFJ.

I also have some ideas on how to straighten and reinforce the damaged whip to make it usable. That might be a winter project. 

72, Craig WB3GCK

MY AX1 Kit

I’ve had a lot of fun with my Elecraft AX1 antenna since I bought it six or seven years ago. I’ve activated several parks with it, and it has yet to let me down. Running five watts into a 45-inch whip shouldn’t really work, but somehow it does. While I don’t always use it as my primary antenna, I always take it along on outings as a backup. 

I have used my AX1 in a variety of settings, e.g., picnic table portable, with a car window mount, clamped to the handlebars of my bike, etc. While perusing the Temu website, I stumbled upon a tactical-style MOLLE pouch capable of holding the AX1 and all the accessories I typically use for those configurations. The cost was a mere $8.00 (USD) for a pair of them. (The original offering is no longer available, but a search for “molle pouch” on Temu or AliExpress should find this pouch or something similar.)

AX1 Kit (front). I have two of these pouches, so I used a nylon zip tie label to tell them apart.
AX1 Kit (front). I have two of these pouches, so I used a nylon zip tie label to tell them apart.
AX1 Kit (Rear). The pouch is MOLLE-compatible.
AX1 Kit (Rear). The pouch is MOLLE-compatible.

It measures 6.3 in. (16cm) x 4.33 in. (11cm) x 2.1 in. (5.5cm). For as inexpensive as they are, the quality is pretty good. The material is durable, and the zipper works smoothly. Each pouch came with an American flag velcro patch. At these low prices, you often get what you pay for. This time, though, I think it was a pretty good deal.

Here’s what I carry in the bag:

Everything fits comfortably in the little pouch, but there isn’t much room to spare. 

This is everything I carry in my AX1 kit. (See text for list)
This is what I carry in my AX1 kit. Not shown is a 3-foot RG-316 coax cable. (See text for list)

I normally carry my AX1 pouch in my backpack. When I have too much other stuff in my pack, I can use the MOLLE straps to attach the pouch to the outside of the pack. 

It’s nice having all of this stuff in one place. Now my little AX1 is always ready to go, however I plan to use it.

72, Craig WB3GCK

Quick Two-Fer

As is my practice of late, I did an early morning activation to beat the heat. On Sunday morning, I drove up to Hopewell Fire Tower, which is part of William Penn State Forest (US-5481, KFF-4914). This small tract is located within French Creek State Park (US-1355, KFF-1355).

There was only one other vehicle in the parking lot when I rolled in. My plan was to operate from an old, stone picnic shelter, but I was swarmed by bugs as soon as I got out of my truck. So, I stayed in the truck to keep the annoying flying critters at bay. My equipment today included my Penntek TR-35 (5 watts, CW) and my 12-foot loaded whip. 

Based on my Reverse Beacon Network (RBN) spots, the 40M band seemed in pretty good shape. I quickly logged 15 contacts before moving to 20M. I logged a few more on that band before shutting down. 

My 40 minute activation yielded 19 QSOs, including four park-to-park contacts. One of those P2P contacts was with fellow QRP Polar Bear, VE3WMB. It’s always a pleasure to work Michael.

Stay cool out there!

72, Craig WB3GCK

Another Reluctant Activation

As I have gotten older, the heat and I don’t get along very well anymore. So, with the heat and humidity forecasted for today, I was just going to stay home and get caught up on some things around the house. My (far) better half intervened and encouraged me to go out early before it got too hot. She’s always right, so off I went.

I drove down to Ridley Creek State Park (US-1414, KFF-1414) and found a parking spot with some shade. Along with my Penntek TR-35 (5 watts, CW), I used an MFJ-1979 17-foot whip with my homebrew loading coil. 

My MFJ-1976 17-ft whip on my homebrew loading coil.
My MFJ-1979 17-ft whip on my homebrew loading coil.

I started out on 40M and wound up staying there for my whole activation. The band was in pretty good shape, as it only took about eight minutes to log my first 10 contacts. 

About 40 minutes into my activation, I got a call from my (far) better half. There was an issue at home, so I packed up and headed out.

I ended up with 20 contacts this morning, with four known park-to-park contacts. One contact was with fellow QRP enthusiast, Jim W1PID. It’s been a while, so it was nice to hear him again. One of my park-to-park contacts was with QRPer Thomas K4SWL. We had a very light copy on each other, but he persevered and eventually pulled me out of the noise. Thanks for your patience, Thomas!

On an unrelated note, it’s great to have Logbook of the World (LoTW) back up and running, after a serious cybersecurity incident. The system also seems to run much faster now, so it’s nice to see the backlog steadily declining. I’m guessing things should be back to normal in the next week or so.

Finally, I’d like to wish my fellow Americans a very happy and safe Independence Day!

72, Craig WB3GCK

Of Hotspots and Wi-Fi

I recently spent some time in Central Pennsylvania at my daughter’s house. Since I was going to be there a while, I brought along my Raspberry Pi hotspot. While I’m not really active in digital voice modes (or any voice modes, for that matter), there are a couple of DMR nets I like to check into each week. 

One issue I ran into in the past, is that my hotspot refuses to connect to their Wi-Fi network. Their Wi-Fi SSID has both an apostrophe and a space in it, so I’m guessing that’s the issue. I could have connected the hotspot directly to their router via an ethernet cable. Because of their router’s location, I would have had to move some furniture and put the hotspot in an awkward location. So, this time around I brought a little travel router to try another approach. 

Back when I was working, I had a TP-Link Nano router that I took on business trips. Typically, I would connect it to an Ethernet port in my hotel room to create a personal Wi-Fi network for my laptop and phone. A while back, I upgraded to the newer (and faster) TP-Link TL-WR802N travel router. I don’t travel nearly as much these days, so the new router hasn’t seen much use.

My little TP-Link travel router (right) and my beat up old hotspot. The paper taped onto the hotspot is to tone down its excessively bright LEDs.
My little TP-Link travel router (right) and my beat up old MMDVM hotspot. The paper taped onto the hotspot is to tone down its excessively bright LEDs.

I brought the travel router along on this trip to create a wireless bridge from the house’s Wi-Fi to my personal Wi-Fi. The router’s Wi-Fi network has an SSID that my hotspot likes. I haven’t used that mode much, so I had to resort to the user manual to refresh my memory on how to set this thing up.

Actually, it was pretty easy to set up. It was simply a matter of connecting my laptop to travel travel router’s Wi-Fi to access the admin functions. From there, I set it up in the “Hotspot Router” mode. Then, I scanned to find the house’s Wi-Fi network and logged into it.

Testing the internet connectivity with my laptop, the speed looked good. I had previously added my travel router’s SSID and password to the hotspot, so soon after powering up I was hearing the sounds of DMR coming from my HT. This configuration worked great, and I successfully checked into a few nets during the week. 

The next time I go out there to visit, I’ll just need to power up the router and the hotspot, and everything should work. (Knock on wood)

No ground-breaking technological advances here. I just love when a plan comes together. 

73, Craig WB3GCK

[Disclaimer: I have no monetary interest in this product, and there are no affiliate links in this post. I’m just a satisfied owner.]