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Re: LF: Little TX test at 8270.00046 from JN64

from [Riccardo Zoli] [Permanent Link][Original]
To: LF Group <[email protected]>
Subject: Re: LF: Little TX test at 8270.00046 from JN64
From: Riccardo Zoli <[email protected]>
Date: Mon, 11 Dec 2017 23:09:19 +0100
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Hi Paul, VLF


Many thanks for your efforts!
I'm running with a GPSDO at 16384.0000kHz clocking a DDS AD9850.
The output is divided by 4 (SDR quadrature generator). Tuning dword is 8671724.
Now only 90W from the audio amplifier and about 13kVrms on radiator.
Next days, I will try to find a better antenna match (and more power).
Antenna current is now oscillating due to a fresh breeze.

All the best


73 de Riccardo IW4DXW


Il 11/Dic/2017 22:43, "Paul Nicholson" <[email protected]> ha scritto:

Riccardo IW4DXW wrote:

> I'm on air (i think :-)) on VLF.

> QRG: 8270.00046
> Antenna current: 350mA
> Continuous carrier.

That's nice to hear - Stefan is running out of receivers
and I'm running out of transmitters!

I'm looking for you with

 http://abelian.org/vlf/fbins3.html#b=160&s=fd&m=fb&w=r&c=1

but nothing shows yet.   If you can launch 10 or 20 uW, it
is likely to be visible.

Later, when you've been on air a few hours, I'll run a narrow
band spectrum.    You're locked to GPS I hope, otherwise
I have no chance at this range (1017 km).

Let us know when you switch off.
--
Paul Nicholson
--


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