Re: LF: RE: More 8.97kHz WSPR decodes - changed PC here

[Roger Lapthorn <rogerlapthorn@gmail.com>]

Rik (et al)

To generate a WSPR TX tone at odd frequencies set the band to "other", dial frequency to "0.0000" and TX frequency to "0.00897". It appears you can generate a WSPR TX tone this way right up to 22kHz (maybe more). 

On RX this does not work though - it appears you can only decode between 1.4-1.6kHz - so I up-convert with my VLF converter (see my website) to 12MHz and into the FT817 and SignaLink USB and the PC.

73s
Roger G3XBM

On 27 April 2011 15:55, Rik Strobbe <Rik.Strobbe@fys.kuleuven.be> wrote:

Roger, Andrew,

 

congrats !!!

How do you get the WSPR signal at 9kHz ?

 

73, Rik  ON7YD - OR7T

 

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Van: owner-rsgb_lf_group@blacksheep.org [owner-rsgb_lf_group@blacksheep.org] namens Roger Lapthorn [rogerlapthorn@gmail.com]
Verzonden: woensdag 27 april 2011 16:19
Aan: G6ALB; sub9khz@yahoogroups.com; rsgb_lf_group@blacksheep.org
Onderwerp: LF: More 8.97kHz WSPR decodes - changed PC here

As an experiment I changed over to my wife's laptop and got immediate decodes of G6ALB's VLF earth mode signal (3km) at -17dB S/N, suggesting the issue with lack of decodes may be with my soundcard and not Andrew's.

1408 -17 -0.6   0.008986  0 G6ALB JO02 47
1410 -17 -0.6   0.008986  0 G6ALB JO02 47
1412 -17 -1.2   0.008986  0 G6ALB JO02 47
1414 -17 -0.8   0.008986  0 G6ALB JO02 47
1416 -17 -0.8   0.008986  0 G6ALB JO02 47

This is a very solid signal on the 80m square single turn vertical wire loop antenna. Andrew is using 44W to an earth electrode antenna.

73s
Roger G3XBM

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