Re: LF: MF: EbNaut

[Markus Vester <markusvester@aol.com>]

So far all decoded successfully in Nuremberg. The signal is strong but propagation is really playing havoc on your phase (see the peak shape in the attached plot from 19:20).

start   car. sym.
 UT     dB   dB
18:40  1.6  1.2
19:00  7.6  5.7
19:20  6.5  3.5
19:40  7.4  5.0
20:00  2.6 -2.9
20:20  2.9  0.8

73, Markus

-----Ursprüngliche Mitteilung-----
Von: Markus Vester <markusvester@aol.com>
An: rsgb_lf_group <rsgb_lf_group@blacksheep.org>
Verschickt: Sa, 27 Feb 2016 9:06 pm
Betreff: Re: LF: MF: EbNaut

Nice going! You've got a very decent carrier here (albeit with some iono spread), and even a visible noise hump from the PSK modulation:
https://dl.dropboxusercontent.com/u/26404526/opds.htm (bottom image).

Will attempt a decode from here now, and then have a look if I can get something out of Domenico's dropbox data.

Best 73,
Markus

-----Ursprüngliche Mitteilung-----
Von: Paul Nicholson <vlf0403@abelian.org>
An: rsgb_lf_group <rsgb_lf_group@blacksheep.org>
Verschickt: Sa, 27 Feb 2016 8:51 pm
Betreff: Re: LF: MF: EbNaut

Been on now for 2 hours and all looks fine. I set up
a fan and the toroid and FETs are nice and cool now.

Is it normal practice to need a fan for the toroid?

DC input is rock steady at 3.78 amps which is a good sign.
I think there's enough extra dBs going out to have a
chance of an Italian decode. That's my target for this
run. I don't think there are any more distant decoders.

--
Paul Nicholson
--

02271924_sym.png
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