Re: VLF: Carrier on 6470.005 Hz - and 6469.9975 Hz

[Paul Nicholson <vlf0403@abelian.org>]

Markus wrote:

> Looks like Stefan's carrier was back on 6470.005 today
> from 8:40 to 13:40 UT.

Stefan today is averaging 0.25 fT and 25.8 dB S/N in 69.4 uHz.

> I intend to leave it on for a while.

After 3 hours, 0.06 fT with S/N 12.3 dB in 92.6 uHz.

> I wonder if you could measure the relative phase of Stefan's
> and my daytime carriers?

Sure, no problem...

From today's daytime signals

 DK7FC on 6470.0050, 09:00 to 13:00: absolute phase +68.5 degrees;

 DF6NM on 6469.9975, 13:30 to 16:30: absolute phase -81.4 degrees;

Both frequencies are periodic in 1 day so these phases can be
compared at midnight.

> We have been discussing whether we could transit simultaneously
> on the same QRG with appropriately aligned TX phase, increasing
> the combined signal by ~2 dB.

Markus needs to advance phase by 150 degrees, or Stefan needs to
lag his signal by 150 degrees, for the two signals to arrive in
phase here.

--
Paul Nicholson
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