Hi Mike, NF4L, Another great suggestion! I forgot to check this, and will do so in the morning. Is this net great, or what!
Many thanks and VY 73, John ----- Original Message ----- From: "Mike" <n...@nf4l.com> To: "John E. Reiser" <reis...@optonline.net> Sent: Thursday, June 03, 2010 7:51 PM Subject: Re: [Elecraft] K3 Mods > Be sure the mark frequency is the same in the K3 as it is in MMTTY. That > bit me once. > > 73, Mike NF4L > > John E. Reiser wrote: >> 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 >> >> > > > ______________________________________________________________ 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
