Re: LF: WSPR

[Roger Lapthorn <rogerlapthorn@gmail.com>]

Hi Stefan,

Here I was copying you on 136kHz WSPR last night with an untuned antenna and a deaf FT817.  PA0A had his set-up showing the wrong band for a time, so maybe it was one of his spots of me you saw on 136kHz TX?  I hope to be WSPRing and JT9 active on 136kHz by the end of the week, on the earth electrode antenna, when a new 136kHz version of my MF 10W transverter is ready. From previous experience, this is a LOT harder than 472kHz with small/compromise antennas at this power level.

Have just checked that my current WSPR settings are correctly on 474.2kHz. At the moment I am using my "10m halo feeder" as a 6m long Marconi. In the week I am rigging up a coax so I can run the earth-electrode antenna from the upstairs shack with the transverter in the back of the garage at the feed point to the earth-electrode antenna. Another local G4HJW is experimenting with a 30m spaced earth-electrode antenna on 472kHz WSPR and getting quite decent results - he is also seeing loop-like directionality. Another local G4KPX is using 1W RF into a 1m diameter loop indoors and getting reports from decent distances. He is a good signal with me. Amazing. His ERP is a lot less than 100uW.

You may remember that I have copied both you and G3XIZ on the earth-electrode antenna on 8.97kHz. I think DJ8WX and one of the Austrians was copied on 8.97kHz on my 80m sq loop when this was up.

73s

Roger G3XBM

On 12 January 2013 19:31, Stefan Schäfer <Stefan.Schaefer@iup.uni-heidelberg.de> wrote:

Am 12.01.2013 20:06, schrieb Roger Lapthorn:

[...]

BTW, thank you for your recent 472kHz WSPR spots.

73s
Roger G3XBM

No problem ;-)

BTW, you're showing on the LF WSPR activity map. Is this correct or did you forget to switch the band in the WSPR software? Are you receiving with the earth loop? Right now i'm WSPRing on LF in 33% mode. If you like, give it a try, RX wise...

73, Stefan

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