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1. [TRLog] CW Keying Circuit Question (score: 1): Author: n2jt@fast.net (Jack Trampler); Date: Sun, 6 Jun 1999 18:56:00 -0400; My FT-1000MP just went on the blink and I have to send it back to Yaesu. As such I will be using my Drake C-line as my main station for a while. Does anyone know if the keying circuit in the manual u; /archives//html/TRLog/1999-06/msg00031.html (7,009 bytes)
2. [TRLog] CW Keying Circuit Question (score: 1): Author: W4EF@pacbell.net (Michael Tope); Date: Sun, 6 Jun 1999 16:54:33 -0700; Jack, Check the T-4XC manual to be sure, but I think the Drake uses grid block keying (negative voltage). You will most likely need a PNP transistor or a FET to key it properly. Mike, W4EF...........; /archives//html/TRLog/1999-06/msg00032.html (8,385 bytes)
3. [TRLog] CW Keying Circuit Question (score: 1): Author: n6tr@teleport.com (n6tr@teleport.com); Date: Sun, 6 Jun 1999 22:34:21 -0700 (PDT); You need a PNP transistor. Easiest way is to use the serial port and use INVERT after the port number. This will reverse the sense of the output and allow you to use a PNP transistor instead of NPN.; /archives//html/TRLog/1999-06/msg00033.html (7,368 bytes)
4. [TRLog] CW Keying Circuit Question (score: 1): Author: Clive_Whelan@compuserve.com (Clive Whelan); Date: Mon, 7 Jun 1999 18:01:59 -0400; Jack, << Does anyone know if the keying circuit in the manual using a 2N2222A transistor can key the T4XC safely or do I need a different circuit? >> As someone else has said invert the phase, and *t; /archives//html/TRLog/1999-06/msg00036.html (7,271 bytes)

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