Hello Everyone, Yesterday, I did the following mods for my K3 #384, running FW 3.99:
K3DSPUPGD K3 Negative ALC and External Band Data Pull-up Mod Front Panel Mike Circuit Mod IF Buffer Gain Mod. I was scrupulous about ESD precautions, using a wrist strap and anti-static mat. Before the mods, everything worked perfectly. After the mods, receive seems OK, audio is improved, but I have some problems on transmit: 1) Attempting to transmit RTTY with MMTTY now produces no RF output from the K3. I use AFSK A for RTTY. It seems like I have no T/R switching. Tune, CW and SSB work correctly and produce the expected output levels. 2) The K3 does not key up my ACOM 1000 amp on Tune or CW. It keys the amp OK on SSB when the PTT button on the mike is pressed. It also keys the amp OK in CW mode if the mike PTT button is held down. I checked that VOX is enabled for CW. RTTY produces no output from the amp under any circumstances. I have reloaded FW 3.99, and then went back to version 3.97 (all files), but the problems remain. I have checked and rechecked and rechecked all cable connections to the K3 back panel, as well as my CONFIG and MMTTY settings. Everything looks OK, but I may have missed something. BTW, I don't use ALC with the amp. To summarize the problems: 1) The K3 produces no output in RTTY 2) The Key Out jack (for keying the amp) does not function with VOX. Any ideas? Many thanks and 73, John, W2GW ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
