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| To: | <[email protected]> |
|---|---|
| Subject: | LF: Rock bound |
| From: | "J. Allen" <[email protected]> |
| Date: | Sun, 11 Mar 2007 05:38:01 -0000 |
| Delivered-to: | [email protected] |
| References: | <[email protected]> <128501c76290$67010040$4e6f6a58@wgt01> <[email protected]> <000501c7629b$c4b6dd80$0300000a@bob2l2u6k2n1g3> <003a01c762a7$574441a0$0300a8c0@lark> <001401c762aa$5398e580$0300000a@bob2l2u6k2n1g3> <[email protected]> |
| Reply-to: | [email protected] |
| Sender: | [email protected] |
Joe,Using computer generated DFCW tones of 1000 and 1015 Hz into the microphone connector of a TS450 in SSB mode to generate DFCW works well. Divide the frequency of the DFCW at 13.776 MHz. output by 100. This results in a very stable DFCW with 0.15 Hz. separation. Modification of the TS450 takes about a half hour. The audio is patched from the computer AF out through an isolating AF transformer which was taken from an old semiconductor AF stage and into the microphone connector on the TS450. I have tried this with two different rigs, the FT990 and the TS450, and it works quite well. None of these things was my design, but they go together quite well and result in a very stable VFO and adjustable DFCW shift. I have certainly found this worth the effort. J |
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