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| Subject: | Re: LF: 137.744kHz signal |
| From: | Roger Lapthorn <[email protected]> |
| Date: | Thu, 28 Apr 2011 20:00:04 +0100 |
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Well this is embarrassing.... Just realised the signal ON periods correspond to the times my WSPR beacon is not TXing, so it looks like a low level suprii from my TX PA generated locally. The driver and PA in my QRP transverter are not switched off during TX (just no drive applied), so either the driver or PA is slightly self-oscillating and this is being picked up by the RX. It must be at a very low level indeed but I will sort this later. 73s Roger G3XBM On 28 April 2011 19:49, Roger Lapthorn <[email protected]> wrote: I am receiving the attached signal on (around) 137.744kHz at around 1815-1850z. The timescale shown is around 30 minutes, so it looks like a QRSS signal from someone. -- http://g3xbm-qrp.blogspot.com/ http://www.g3xbm.co.uk http://www.youtube.com/user/g3xbm https://sites.google.com/site/sub9khz/ |
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