Never missing an excuse to get on the air, the ARRL VHF contest was this past weekend. Many of us, myself included, have permanent VHF / UHF antennas (plural) on the roof. Don’t ask how many, we’ve surely lost count… But they’re extremely non-ideal when the polarization doesn’t match the traffic you’re trying to work…Continue reading “September 2021 VHF contest”
Early on, both of my tower trailers started out with fibre-glass vertical antennas. They have great gain, and you can get them in longer lengths to get every bit of elevation you want. I am starting to re-think that strategy. I discovered that it’s alarmingly easy for a long fibre pole to be just longContinue reading “Rethinking J-Pole antennas”
At Field Day 2021 we identified a use case for a larger diesel. We had a big motorhome with a broken internal (7-8 kw?) genset. These have the 50A power cords. This is really 50A of 120VAC, not really 240V per se. The little single phase 6KW generators are set up for two legs ofContinue reading “Vin- a Bigger Mobile Genset”
How far away can some random city in Wisconsin be? I live about nine air miles from the border. I saw this one on the Hansen Auction site- bit rusty. Bad generator- not news. Lobbed in a crazy lowball bid. Then decided to study the photos. The little toggle /clamp in the two inch ballContinue reading “Bumblebee #15”
I’ve lost track of how many tower trailers we have. N0NAS did suggest placing low bids and walking away. I did this twice last week and have two new to us rigs in my driveway. Lucky is a Terex RL4000, similar to the excellent Terex RL4 I already have. The idea was a matched pair,Continue reading “Lucky #14”
ARRL Field day is an exercise for emergency communications, and a fun contest for ham radio operators. Most clubs use software, like N3FJP to handle logging from multiple locations at the same time. This presents the need for a network to connect the server to the clients. Having done this many times in many differentContinue reading “Getting Internet access and N3FJP Logging configured at your ARRL Field Day site”
ARRL Field Day 2021 is upon us, and we are listening carefully to the various planners. The tower trailers are popular in two roles- towers and generators. Beams are a nice add on for station planners and a 30+ foot place to hang a dipole- why not. Light towers have accessory outlets, and 15-20A 120VContinue reading “240V AC Power Distribution and Field Day”
The supply of running older used tower trailers at auction continues to be good so I keep adding new ones. Several of the older or non conforming ones were sold. I am trying to standardize. Every one is 30′ and diesel. The concept is to generally deploy with pairs of similar looking diesels. So N+1Continue reading “Fleet Rebalancing”
Locally here, we’re on a multi-day 90 degree or higher weather marathon. So what does that do to electronics, like Rasberry Pi devices in your outdoor tower trailers? Good question…. Well, our batteries are getting pretty well charged in the sun. This time of year, the solar panels can run mesh and small computers 24/7Continue reading “Baking Electronics”
Doug, N0NAS who has been a long time mostly remote collaborator on the tower trailer project gave up trying to convince me to not buy any more of them in March, 2021. The argument was “we don’t use them”- however they get used all the time. They have been to Hams in The Park (+Continue reading “Ham Tower Generator Trailer #13, Tango X-ray (TX)”
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