Thanks to all who monitored and provided reports on this latest test of slow JT9 modes. The test ended suddenly around dawn this morning. Here is the reason: http://www.n1bug.com/vario-fail-1-1200.jp
Hello N1BUG, I too have had issues with bolted connections to the variometer. Not an expensive fix so long as you don't mind a few battle scars, but knowing you, you probably want it cosmetically per
Eventually I will rebuild it perfect... although I would prefer to start over with a new coil as this one requires too much maintenance. Right now I don't have the luxury of time for any of that. It'
Hi Paul, For VLF i use a protection circuit that monitors the antenna current. If it suddenly or slowly drops, the transmission is interrupted. This help to prevent smoking coils. In principle you ju
Sorry to see the damages Paul. As Chris said very certainly "LF without smoke is QRP" ;-) I would add that LF stands for "Let's Fire" and a "!" should be added at the end 73 de Luis EA5DOM --Mensaje
Hi Stefan, Thanks for the ideas. Yes, it makes sense to monitor the system for changes and shut down if any are detected. I guess you want no antenna on that RX, or at least very small antenna. :-) I
Hello N1BUG, What happens here is the wife wakes up and says "The wheelie bin outside is on fire again" tuts and turns over. -- Best regards, Chris mailto:[email protected]
Hi Sandy, Antenna current was about 1.7 amps. After disassembly and analysis I think the first problem was using stainless hardware. The second was (probably) that it worked loose enough to cause som
Hi Chris, Well you have a warning system there. KB5NJD remarked that the only way to know for sure how a failure occurred might be to have a camera watching the coil at all times. Well, maybe we coul
