Wow, fantastic response. I was afraid I might be entering a black hole. And thanks,?Kelly K7MHI, for the up-to-date and very clear schematic! Wow, that was a pleasure to read after reading the one in the manual.
Allen AF6OF, thanks so much for your thoughts. Re "high SWR", the unit may have been turned on without the antenna connected, which you specifically speak to in the manual -- before my time. I've had the pleasure last night of interacting with the unit via bluetooth, and since D6 is removed (I removed the charred remains), there was no danger of running the output power at the rated 8 watts. It had enough power to be received by my nearby HT and be decoded by direwolf. I was able to report/transmit weather (no weather input), beacon, telemetry, and position/TSTAT. Beyond that, I don't know if the RS232 is really working (I guess Port A is working since it's receiving/displaying data via the bluetooth hookup. We do have a null? modem, F/F cable and a USB/RS232-male cable (not Byonics) but I haven't tried that on Port B yet. The weather station gets hooked up to Port B, I believe, but I'll take care of that. I think we just set port B to text mode (BMODE TEXT) to receive one of modes from the weather station and the MTT4BT retransmits it, where it eventually gets translated/posted by aprs.fi. APRS.FI doesn't seem to like it when port B (BMODE) is set to PEET. This weather station was procured Jan 2021 so it's recent.? But forget the weather, back to the Micro-Trak ...
All this to say, yes, I'd prefer to have you check it out ("test and evaluate"), but I'd appreciate a cost estimate and estimated turn around, if possible, so I can get authorization from the club leadership. I'll be happy to send you my address/contact info via
allen@....
Thanks all for your help!
Ralph Simons
KC1RWK
