[hfsig] Sidebands on Raspberry Pi WSPR carrier
taprsig at unsupported.org
Sun Sep 4 09:06:28 CDT 2016
I'm new at this, but I observed the same thing in my initial testing, and was about to ask the same question.
From the raspberry pi -
Desired center frequency for WSPR transmission: 14.097166 MHz
Waiting for next WSPR transmission window...
Obtained new ppm value: 1.16522
TX started at: UTC 09-04-2016 13:38:01.002
TX ended at: UTC 09-04-2016 13:39:51.679 (110.678 s)
And what I decoded -
1338 -26 -0.9 14.097006 -1 KW1BF DN41 10
1338 -21 -0.9 14.097126 -1 KW1BF DN41 10
Some details -
Raspberry Pi 2, the TAPR wspr board is connected via coax to an OCF dipole (an MFJ-2012), but I observed the same thing with a piece of random wire.
For receiving I used a Sony ICF-2010, in the same room as the raspberry pi, with no external antenna, and with the built in telescoping antenna fully retracted and folded. The local/DX attenuator switch set to local, and RF gain slider at about midpoint. Dial frequency 14095.6 kHz, USB mode. Using WSPR-X on a Mac.
If there are other things I should try or observations I should report, please let me know.
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