KE4WMF – Antenna Farm

My “antenna farm” was once just a single antenna. Eventually, I decided to throw discretion to the wind and just go nuts with my selection of antennas. Here’s the list, which never seems to stop expanding:

I didn’t want to drill new holes in the roof; plus, a lip mount on the hatchback is impractical due to its plastic trim panels. Regardless, I wanted to preserve as much of the GTI’s good looks as I could. I chose an EM-MG11006-SP, by Electro-Magwave, and installed it over the existing “sharkfin” hole.  Click here to learn more about this solution for adapting an NMO mount to the factory 40mm square hole on my roof. I think this mount almost looks like it could have come this way from the factory. I imagine that only fellow hams and VW enthusiasts will recognize that this is not a stock antenna.

My choice of antenna depends on how “cute” I want my car to appear. My most discrete antenna is a 19-inch Tram BR-179. When I want better performance, I mount a 40-inch Comet CA-2X4SRNMO, which is a 5/8-wave antenna. The CA-2X4SR’s primary drawback is excessive noise at highway speeds. Most often, I have a 1/2-wave Diamond NR73BNMO that’s 33 inches tall. This setup allows me to blend-in without being noticed as a communications platform most of the time. Mounting the BR-179 allows me to fit into parking structures.

I use a Scorpion SA-680 Black Widow for HF. It is one antenna that stands above them all, literally. The SA-680 can accept full legal power, has excellent adjacent frequency rejection, and stands up to the abuse of road vibration. I’ve added a 35-inch, 8-spoke capacitance hat by W8UZZ, which increases antenna efficiency and allows me to extend less coil. Mounting on the hitch isn’t ideal, but it’s my best option when considering my usual driving routes. So far, my most distant contact was to Slovenia, over 4500 miles (7200 km) away. I can work 17-80 meters with the W8UZZ caphat or 10-80m with its 67″ whip. I cannot work 6m with the Scorpion. So, I have a Comet CF-360B to send 6m signals to a separate antenna. See my latest Scorpion video here.

I eventually started leaving my roof rack mounted for long periods, almost full-time, when I began planning a VHF contesting setup. I added antenna mounts to the ends of each crossbar to expand my capability. My new antenna mounts currently include an NMO mount for a 906 MHz antenna, an NMO mount for my choice of either a NMO-27 for CB or a GMRS antenna, and an SO-239 mount for my ATAS-120A. The lightweight antennas are mounted to the crossbars using Yakima’s Horizontal Mighty Mount 39H; the heavier ATAS-120A mount is fastened by Yakima’s 3/8″ T-bolt. See examples in the photo album below.

“Why an ATAS-120A antenna?,” you ask, when I have a Scorpion SA-680? I bought my ATAS in 2007 as my first mobile HF antenna. While it’s not the best screwdriver antenna on the market, it’s very convenient and a breeze to learn. Today, it’s an “easy button” for when I don’t want to mount the huge Scorpion. The ATAS also tunes 21-54 MHz, which my Scorpion cannot touch with its caphat mounted. As a result, the ATAS is still useful even when I have the Scorpion mounted. I use remote RF switches to choose between the ATAS and the Scorpion.

In 2022, I decided to try my hand at VHF contesting as a “Rover.” A proper horizontally-polarized 6-meter loop antenna by M2Inc.com was among my first of purchases. It’s large and quite awkward. As a result, I mount it only for weekend 6-meter nets or contest activity. Properly polarized for SSB activity, I’ve gained ~20dB of signal strength when compared to my vertically-polarized 6m antenna. I’m told that I’m outputting a much better signal on local 6-meter nets. The setup grew to include loops for 144 MHz and 432 MHz. CLICK HERE to learn more about my growing Rover setup.

My last piece of communications equipment is something that’s not often found on passenger cars: a WeBoost Drive Reach cellular signal booster. The WeBoost uses an outside antenna to bring cellular signals inside for amplification, and then retransmits through a smaller antenna inside the car. It does the opposite with signals from my phone. It can make the difference between no signal in the car and a good signal in some areas. Even in my populated area, the WeBoost has proven very useful for maintaining my connection with the D-STAR network when driving in low-lying areas with intermittent 4G/5G coverage.

I’m also considering a package that will enable me to experiment with working satellites. My ID-5100 features full duplex capabilities, which makes it a good candidate for working FM satellites and the International Space Station (ISS). Satellite tracking with boom antennas while mobile is probably quite a challenge, especially without automated antenna controllers. With these “eggbeaters,” satellite tracking and polarization are not a concern and should enable me to work FM satellites from nearly anywhere that has a clear view of the sky. This is a back-burner idea for now, but it’s too easy of an enhancement to postpone for long. I hope to get this going by Summer 2023.

See the photo album below for a closer look at some of the mounts. Click here to learn more about my horizontally polarized antennas. I’ll leave you with this photo of most of my antennas mounted to the car. It’s not my typical practice to operate with all of these mounted at once. However, there has to be at least one simply ridiculous photo of everything mounted at once! There WILL be more as the setup continues to grow. HAHA!

Thanks for visiting!