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

[Markus Vester <markusvester@aol.com>]

My carrier was on air from 13:30 until 20:35 UT. It is well visible on Stefan's east-west loop, apparently with more favourable daytime propagation compared to 8.27 kHz. Unfortunately no clear trace appeared on the provisional antenna in Amberg (48 km).

Best 73,
Markus (DF6NM)


-----Ursprüngliche Mitteilung-----
Von: Markus Vester <markusvester@aol.com>
An: rsgb_lf_group <rsgb_lf_group@blacksheep.org>
Verschickt: Fr, 14. Apr 2017 15:52
Betreff: Re: VLF: Carrier on 6470.005 Hz - and 6469.9975 Hz

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

I have stacked a few coils again, and since 13:30 I'm running a carrier on 6469.9975 Hz with 0.21 A. Trying to see whether it shows up on the one of the 6470 spectrograms in Heidelberg or Amberg.

Best 73,
Markus   


-----Ursprüngliche Mitteilung-----
Von: DK7FC <selberdenken@posteo.de>
An: rsgb_lf_group <rsgb_lf_group@blacksheep.org>
Verschickt: Mi, 12. Apr 2017 23:51
Betreff: VLF: Carrier on 6470.005 Hz

Hello dear friends of the Very Low Frequencies,

Now i'm down on 6470 Hz again. So far the antenna current is limited by the PA, somehow, obviously one of the transformers does not transfer enough current on this frequency. The antenna current is 460 mA. The actual goal is to get 500 mA, maybe 540 mA.
The carrier is on the air since 20:42 UTC on 6470.005 Hz.
Relative to my 8270 Hz signal, this one is 7.8 dB weaker. But relative to my last experiments on 6470 Hz, now the signal is 6.2 dB stronger.
The carrier will run several hours, protected to 450 mA.

If all works well, i will run an EbNaut message tomorrow evening.

Reports welcome.

73, Stefan