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| To: | [email protected] |
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| Subject: | LF: 137.5kHz WSPRing - reports appreciated |
| From: | Roger Lapthorn <[email protected]> |
| Date: | Sat, 29 Jan 2011 12:50:16 +0000 |
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Hi All, Working on my 137.5kHz QRP transverter and will be TXing and RXing on 137.5kHz WSPR on and off during the weekend, so I 'd appreciate any reports. There are not that many people looking on 137.5kHz WSPR (136kHz USB dial) within my range, which is around 50-150km maximum. At the moment I'm combining the RX preamp with the TX part of the transverter and optimising the combination. I use the RX part "straight through" via a tuned preamp using the FT817 in split mode RXing on 137kHz. This simplifies the design and should avoid relays or TX/RX switches. 73s Roger G3XBM -- g3xbm-qrp.blogspot.com/ www.g3xbm.co.uk www.youtube.com/user/g3xbm G3XBM GQRP 1678 ISWL G11088 |
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