VO1NA wrote:

> There will be another repeat transmission tonight.

> 23 Dec. 2100 utc, 16K21A, CRC-8, one character,
> 544 symbols, 1 minute  each, 8270.0075 Hz.

Summary after seven repeats:

Todmorden (3575 km)
-------------------

 21/22 Eb/N0 +11.1 dB, S/N -26.5 dB in 1Hz, phase +176.5,*Decoded*
 22/23 Eb/N0 +10.3 dB, S/N -27.3 dB in 1Hz, phase -167.2 *Decoded*
 23/24 Eb/N0 +13.4 dB, S/N -24.2 dB in 1Hz, phase -169.2 *Decoded*
 24/25 Eb/N0 +12.2 dB, S/N -25.3 dB in 1Hz, phase -163.4 *Decoded*
 25/26 Eb/N0  +8.1 dB, S/N -29.5 dB in 1Hz, phase -155.1 *Decoded*
 26/27 Eb/N0 +13.0 dB, S/N -24.6 dB in 1Hz, phase -170.4 *Decoded*
 27/28 Eb/N0 +12.3 dB, S/N -25.3 dB in 1Hz, phase -169.3 *Decoded*

Bielefeld (4301.5 km DL4YHF)
----------------------------

 21/22 Eb/N0 +4.7 dB, S/N -32.9 dB in 1Hz, phase  -22.8, *Decoded*
 22/23 Eb/N0 +1.4 dB, S/N -36.2 dB in 1Hz, phase  -35.3, *Decoded*
 23/24 Eb/N0 -7.4 dB, S/N -45.0 dB in 1Hz, phase  +80.0;
 24/25 Eb/N0 -4.7 dB, S/N -52.4 dB in 1Hz, phase   -4.7;
 25/26 Eb/N0 -2.2 dB, S/N -39.7 dB in 1Hz, phase  +19.1;
 26/27 Eb/N0 +3.0 dB, S/N -34.6 dB in 1Hz, phase  +11.0, *Decoded*
 27/28 Eb/N0 +2.7 dB, S/N -34.9 dB in 1Hz, phase   -8.1, *Decoded*

 I wonder if the good nights and bad nights correlate with
 having other equipment connected at the radio club?

Warsaw (5096.6 km SQ5BPF)
-------------------------

 21/22 Eb/N0  +1.0 dB, S/N -36.6 dB in 1Hz, phase +149.1, *Decoded*
 22/23 Eb/N0  -4.2 dB, S/N -41.8 dB in 1Hz, phase +172.2;
 23/24 Eb/N0  -0.8 dB, S/N -38.4 dB in 1Hz, phase -167.8;
 24/25 Eb/N0  -3.3 dB, S/N -37.6 dB in 1Hz, phase +164.2;
 25/26 Eb/N0 -17.8 dB, S/N -55.8 dB in 1Hz;
 26/27 Eb/N0 -10.5 dB, S/N -48.2 dB in 1Hz;
 27/28 Eb/N0  -5.2 dB, S/N -42.8 dB in 1Hz;

Cumiana (4533.4 km IK1QFK)
--------------------------

 21/22 No reception, rx fault
 22/23 Eb/N0 +1.6 dB, S/N -36.0 dB in 1Hz, phase +39.2, *Decoded*
 23/24 Eb/N0 -0.9 dB, S/N -38.5 dB in 1Hz, phase +35.9;
 24/25 Eb/N0 +2.4 dB, S/N -35.2 dB in 1Hz, phase -19.4, *Decoded*
 25/26 Eb/N0 -8.2 dB, S/N -45.8 dB in 1Hz, phase -16.8;
 26/27 Eb/N0 -3.3 dB, S/N -40.8 dB in 1Hz, phase -15.6;
 27/28 Eb/N0 -2.6 dB, S/N -40.2 dB in 1Hz, phase  -2.6;

Forest, VA (2415.3 km KE4RJQ)
-----------------------------

 21/22 Eb/N0  -0.4 dB, S/N -38.0 dB in 1Hz, phase  +62.5;
 22/23 Eb/N0  -3.8 dB, S/N -41.3 dB in 1Hz, phase  -15.8;
 23/24 Eb/N0 -14.8 dB, S/N -52.4 dB in 1Hz;
 24/25 Eb/N0   0.0 dB, S/N -37.4 dB in 1Hz, phase  -34.9;
 25/26 Eb/N0  -0.8 dB, S/N -47.4 dB in 1Hz;
 26/27 Eb/N0  -1.5 dB, S/N -39.1 dB in 1Hz, phase -121.1;
 27/28 Eb/N0  -0.1 dB, S/N -37.7 dB in 1Hz, phase    5.1 *Decoded*

 *First VLF message decode Canada to USA.*  24/25 almost decoded
 but was beaten by a stronger false decode.

 But something not right about the phase/timing at Forest.  These
 repeats will not stack. May explain the lack of repeatability seen
 at 17470.1 Hz.

--
Paul Nicholson
--