I had to change from my "Marine Standard" 3 ft whip and preamp to a
small loop antenna and high-gain preamp, but am getting the signal in a
lot of noise and spherics in NH such that an Austron 2100F is locking.
There is a big difference between 1MW from Nantucket and 75kW from New
Jersey!
David N1HAC
On 8/14/20 5:52 PM, Dana Whitlow wrote:
Thanks, Paul.
Does this "standard marine preamp" have an integrated antenna of some kind?
If not (or you're not using it), can you tell me about the antenna you
*are* using?
I've not "heard" so much as a peep here in south central Texas, but have
only
looked in the daytime. Is the station transmitting around the clock?
I do suffer from an abysmally-high noise level here. But I'm trying to get
a
handle on whether it's even worth my trying further.
Dana
On Fri, Aug 14, 2020 at 4:23 PM paul swed <[email protected]> wrote:
Dana that was 11:29 am when you emailed me. Looking at the 3586 its -49 db
now.
To your second question I can't really know that. Its a standard marine
preamp. Might guess 20-30 db. But its nothing special. Made by a company
STS. Classic FET, filter , 2 X transistor design. It would be a bit of a
math guess to use the 3586 reading and deduce the actual field strength.
Regards
Paul
WB8TSL
On Fri, Aug 14, 2020 at 4:08 PM Dana Whitlow <[email protected]>
wrote:
Paul,
What time of day did you measure that signal strength?
And what are the characteristics of the "standard marine preamp"?
Most importantly, what field strength corresponds to 1000 uV output from
it?
Thanks,
Dana
On Fri, Aug 14, 2020 at 12:17 PM paul swed <[email protected]> wrote:
Hello to the group.
The signal is on the air.
I have just discovered one of my favorite HP 3586 SLVM has an issue
with
sensitivity.
For reference in Boston on a second 3586 the level is -51db avg. or
1000
uv
using a standard marine preamp 6' off the ground. The signal should
remain
on until the 20th.
I think this also points to the funny issue I was seeing yesterday with
intermittent signal levels. Darn one more project to the list.
Regards
Paul
WB8TSL
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