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| To: | <[email protected]> |
|---|---|
| Subject: | LF: Re: Re: WSPR Beacon on 503.5kHz |
| From: | "James Moritz" <[email protected]> |
| Date: | Sun, 25 Jan 2009 00:27:49 -0000 |
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| In-reply-to: | <09254C21C2884198957A5719438826D6@p4> |
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| Reply-to: | [email protected] |
| Sender: | [email protected] |
Dear Mark, LF Group, Thanks for the reports - Interestingly sometimes I am seeing an extra faint trace from Jim, almost exactly 100Hz up and it even decoded on one over. It is much weaker (at least 15dB down). An alias / mixing product on my system? or is anyone else seeing this? I am not seeing any extra signals on the DI2AM beacon, which is on average 10dB stronger than Jim I thought there might be some problem with mains ripple somewhere in the TX system, but I just checked the TX signal on the antenna feeder here, and the 100Hz sidebands are about -50dB WRT the carrier, which is not abnormally high - I would be very suprised if you could actually detect sidebands at that level from your QTH. Can anyone else see the sidebands? Cheers, Jim Moritz73 de M0BMU |
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