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| To: | [email protected] |
|---|---|
| Subject: | Re: LF: JT65-a and WSPR Test Friday 21 1800 . 2400 HRs |
| From: | "Johan H. Bodin" <[email protected]> |
| Date: | Thu, 20 Mar 2008 15:41:48 +0100 |
| In-reply-to: | <000f01c88a93$d7067790$0d00000a@AGB> |
| References: | <000f01c88a93$d7067790$0d00000a@AGB> |
| Reply-to: | [email protected] |
| Sender: | [email protected] |
| User-agent: | Thunderbird 2.0.0.12 (Windows/20080213) |
Graham wrote: If the drive levels are the same, looks may run WSPR at 503.000 Ae fequency , and the JT65-a slightly above, in parallel, setting the drive to give -3 db per tone, before onset of alc action. Graham,please set the drive to give -6dB per tone (relative to max output). Since the signals are not exactly harmonically related, their voltages will add "in phase" every now and then and you will get twice the amplitude = 4 times the power = +3dB overdrive. 73 |
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