"There are many pursuits which men and women follow, outside of their regular business or profession. No hobby is more suitable for people in general than radio."–Charles William Tassig, The Book of Radio, 1922.
The NF8M/B beacon at 50.0763 MHz is experiencing some difficulty with very low power output and substantial chirp. I’ll investigate in the next couple days and post an update.
Update: The beacon is off the air. There seems to be a problem with the transverter. I’ll investigate and post another update. – 5 Apr 2018
Update: The beacon is back on temporarily, using a different transmitter running about 1.5 watts output. I’ll be working on troubleshooting the transverter so the beacon may be down again at any time. I’ll try to post updates as needed. – 6 Apr 2018 at 2200z
Thanks to the South Lyon Area Amateur Radio Club for hosting me Sunday, March 11 for a presentation on grounding and bonding for the average ham. You can find links and resources here, or via the menu to the right under Presentations.
I’ve replaced my current system of shack feedline grounding with a single-point ground plane for the antenna lines coming into the station.
Previously, the HF antennas (off-center-fed 80 meter dipole, 6BTV vertical, and 160-meter inverted-L) all terminated in a rotary coax switch. The switch is grounded to the station ground bus that runs along the back of the operating desk, in turn grounded with strap to the ground rods through the basement wall outside. Other antennas, such as the 160-meter receive loop, six meter beam and the VHF-FM antenna in the attic, connect to their respective devices directly.
The new SPGP consists of a heavy piece of aluminum angle stock with feedthrough UHF connectors. It’s mounted to a ceiling joist. The angle stock is grounded to the station strap. Each feedline connects through the panel, with short jumpers from the panel to the next piece of equipment in the path. There are extra holes for future connectors if (when!) I add more antennas.
The total solar eclipse that traversed the continental United States on August 21 was a golden opportunity to study the effects of the eclipse on ionospheric radio propagation. A rather new organization, the Ham Radio Science Citizen Investigation (HamSCI), sponsored a QSO Party on that date to collect data to investigate what happens when the sun goes away for a few minutes.
From all accounts, the experiment was a success in that it confirmed the expected outcome – nighttime propagation conditions appeared, and then disappeared, in the middle of the day.
I recently replaced my shack computer, a Dell Optiplex, with a Dell Precision i7 workstation. I generally buy off-lease computers, since they are only a couple years old, well-equipped and reasonably priced, and Linux runs on them just fine.
For contest logging, I’m slowly working in the N1MM direction (there’s a trick or two to running it well under wine), so I still use a DOS-based logging program that relies on serial and parallel ports for keying and rig control. Continue reading “Rig control and keying”