HI, Jerry, --- In digitalradio@yahoogroups.com, "Jerry W" <[EMAIL PROTECTED]> wrote:
> The most simple way was to use a diode and variable capcitor in the > VFO tank circuit connected to the Teletype Keyboard contacts. Hmmm ... this is easy. And it's one heck of a lot easier than something I considered ... briefly. That was a FMed oscillator mixed with a VFO or crystal oscillator to get to the desired output. That could be icky (another wonderful techie term I love to use) and apparently overly complex. > Some used a "Polar Relay" in a 60 millamp "loop" in turn keying the diode/capacitor in the VFO tank. Now this part I know about. I've got real hands on time with several Teletype Corp machines starting with the Model 12 (Morcrum- Kleinschmidt <G>) and ending with the 28, 32, 33, and 35 which I went to school for up in Niles, IL. The earlier ones I repaired/rebuilt for other hams (plus I kept a small collection myself) who were doing RTTY or just liked the older machines but figured that since I was at Teletype's school I MUST know how to fix their machines too. Many thanks, Jerry ... and I'll check out rtty.com in a bit. BEst regards, Michael, K3MXO Need a Digital mode QSO? Connect to Telnet://cluster.dynalias.org Other areas of interest: The MixW Reflector : http://groups.yahoo.com/group/themixwgroup/ DigiPol: http://groups.yahoo.com/group/Digipol (band plan policy discussion) Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/digitalradio/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
