Markus wrote:
> I'm tempted to call that a TA first for Dex and Wolf,
Indeed it is tempting. With that 50.5 uHz spectrum the odds
of a false peak is probably one in a few tens of thousands.
Perhaps Dex should change frequency a small amount before
tonight's transmission.
Dex wrote:
> I have about optimized the matching transformer winding
> and was able to get about 20% more antenna current.
The extra 1.5 dB is a good step in the right direction.
The ERP increase should be clear on Mike Smith's receiver
at Forest VA. I restarted the regular Forest spectrum at
http://46.4.26.83/sp8820_vlf35.png
Mike's receiver is very stable and low noise and uses a fibre
optical link for isolation. It also has a first rate GPS
timing system. This is the rx for European txs to shoot for.
You can listen to it on the vlf35 stream at
http://abelian.org/vlf
> I could start at 1800 ...
I don't think I can use the signal so early in the evening.
Signal will be there, but there is so much phase change between
18:00 and 23:00. I should think 22:00 would be a good start
time for T/A. No way to predict how the noise will be tonight.
Visit
http://abelian.org/vlf/fbins.shtml#p=1417536000&b=070&s=fd
and step back over a few days to see the variation in south-west
noise from one night to another.
Wolf wrote:
> In fact 'VLF6' is rather noisy,
It is a first rate natural radio receiver and picks up more
whistlers than all the other sites put together. Its UHF down-
link causes some compression but I guess that doesn't show after
the sferic blanking. Link noise floor never seems to be a problem.
http://abelian.org/vlf/events.php?stream=vlf6
My own 'new' E-field receiver performed dismally last night, but
thanks to the signal from Dex I think I know where the problem
is now. Maybe I can fix it this evening...
--
Paul Nicholson
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