R2AJA's blog

I launched WSPR 2.12 on a Pentium 3 1200 MHz PC.
But it can't work normally.
The error in screenshot
What's it?

Is there modulation such as WSPR, but without using realtime?
I want make automatic beacon, without precision clock.

I've get error with small Fiq (Hz) frequence.
I used ZetaSDR and I/Q mode.
ZetsSDR's L.O. Freq = 10.139.910, Dial Freq = 10.138.700
Fiq (Hz) = Dial freq - L.O. freq = -1210 Hz.
WSPR 2.12 have runtime error with this Fiq (Hz), see images in attach!
I try other Fiq (Hz) numbers:
-7000 Hz Ok
-6000 Hz Ok
-5000 Hz Ok
-4000 Hz Ok
-3000 Hz Bad, error!
-2000 Hz Bad, error!
-1000 Hz Bad, error!
I try other Fiq (Hz) positive numbers:
3000 Ok
2000 Ok
1000 Ok
0 Hz Bad, error!
What can I do?

We know that Frequence difference is 1.46 Hz.
Can I use step 1 Hz or 2 Hz?
Could It work?

I test WSPR-X software.
It do not decode! I see message box:
"At line 34 of file wsprd.f90 file: "Files\wsprx\save\171230_1154.c2"
Traceback: not avaiable, compile with -ftrace=frame or -ftrace=full Fortran runtime error: ////////// "
What is It?

What happens to the decoding signal, with QSB?
The essence of the experiment:
Turn on the receiver in the given time and look at the WSPR decoding.
1) Receive for 1:30, 1:00 (full signal around 1:50). Decoded! :woohoo:
2) Receive for 0:30. Does not decode.
3) Receive within 1 minute, shifted relative to the start signal for 30 seconds, i.e. from 0:30 to 1:30. Decoded!
In the picture a visible signal (1:50; abbreviated: 1:30, 1:00, 0:30; 1:00 with an offset).
The result:

I test WSPR beacon on 10M band. Beacon on Si5351+Arduino+BS170 AMP radiate only 10 mW. My antenna is wire 10 m long, 4 m upper the ground. Beacon is working two weeks continiously. Some spots:
2017-12-12 17:28 R2AJA 28.126060 -27 -1 KO85xt 0.01 PG0DX/1 JO33ce 2052 275
2017-12-12 17:04 R2AJA 28.126049 -26 0 KO85xt 0.01 OZ7IT JO65df 1608 278
2017-12-08 12:38 R2AJA 28.126028 -11 -3 KO85xt 0.01 OZ1FJB JO55si 1651 279