[Elecraft] directional antenna
MC Carpenter
southisland2 at earthlink.net
Sat Nov 27 15:23:52 EST 2004
I forgot, yes the beacons were in the range of 150 to 281, some went a
little higher for example Jacksonville FL is 344, its puts out a Minstrel
power I think of two watts, with the letters "J"A" every few minutes, my
directional radio was simple radio with a swivel antenna on top mounted on a
compass rose.
another good example is North Binimi which signal has been famous for longer
than I am old, its 396 kHz, with letters "Z"B"B"
----- Original Message -----
From: "Bob W7AVK" <rsrolfne at atnet.net>
To: "MC Carpenter" <southisland2 at earthlink.net>
Sent: Saturday, November 27, 2004 1:02 PM
Subject: Re: [Elecraft] directional antenna
> MC - Not sure of your question.
>
> !] Are you looking for information about the LF Beacons and the antennas
> they used in the old days?
>
> They weren't directional, but got beams by phasing several verticals. Also
> modulation techniques were used for the A and N ranges.
>
> 2] Are you looking for data on how to build an antenna for DFing in the
> LF band?
>
> For this one I'd suggest you google loop stick antenna or Ferrite Core
> Antenna. Like what were in the solid state raidos of old.
>
> Good luck,
>
> 73 Bob W7AVK
>
>
>
> MC Carpenter wrote:
>> does any one know where I can get the instructions for a good directional
>> antenna for 150 to 281 kHz., code beacons used for air and marine.
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