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| To: | "LF \(RSGB\)" <[email protected]>, <[email protected]> |
|---|---|
| Subject: | LF: DFCW on TS450 |
| From: | "J. Allen" <[email protected]> |
| Date: | Sun, 16 Jul 2006 06:01:17 -0000 |
| Delivered-to: | [email protected] |
| Reply-to: | [email protected] |
| Sender: | [email protected] |
All,Tests here show the UP an DN pins on the TS450 front Microphone connector do move the frequency up and down when in transmit on CW. The QRS software shift signal from the computer is intended to key a single line to ground to switch mark frequency from shift. Does anyone have a circuit for 74XX series ICs to switch the signals from that line to close the circuit momentarily on either the UP or DN pins? I am working on it with a breadboard and am tired right now and it is not happening for me. J VY1JA |
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