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" <[EMAIL PROTECTED]>
To: "MC Carpenter" <[EMAIL PROTECTED]>
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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