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| To: | "'[email protected]'" <[email protected]> |
|---|---|
| Subject: | LF: Linear amplifiers , MSK, and 500kHz |
| From: | Andy <[email protected]> |
| Date: | Tue, 23 Nov 2004 13:17:22 -0000 |
| Importance: | high |
| Organization: | UKNWN(UK) |
| Reply-to: | [email protected] |
| Sender: | [email protected] |
Has anyone got anywhere with developing soundcard based MSK ? Surely that is
the next obvious move on LF where switch mode PAs rule and a linear PA isn't a
realistic option for high powers, knocking PSK31 on the head.
Just as a novel test (at very low poer of course :-) I tried tuning up the T antenna at 500kHz. A variometer purchased at a junk sale a few years ago - an old NDB thing I guess, that tunes over 100 to 400nH, worked instantly, and I had about 30 - 40 ohms antenna resistance at resonance. Any moves on that band ??? Andy G4JNT |
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