Dear Scott,
Very interesting to see the pictures of
CKN. I’m sure the two big masts must be the LF antennas – but some
of the smaller masts are carrying fixed and rotatable (the ones with 3
horizontal booms at the top) HF log-periodic arrays. For descriptions of
something similar, see the data sheets at
http://www.tcibr.com/NewFiles/hfbroadants.html
http://www.antennaproducts.com/
I think the rotatable arrays are these:
http://www.antennaproducts.com/89photo.htm
Never seen those “Hula Hoops”
before though…
I have been looking at the 76.2kHz and
133.1kHz frequencies a bit – unfortunately, 133.1 has quite a lot of QRM
from sidebands of the “Datatrack” beacons centered on slightly
higher frequency, so a fairly strong signal would be needed to be detectable. 76.2kHz
seems to be in the clear though, but nothing seen so far. BTW, does anybody have
any info about the Datatrack transmitters? There seem to be a number working on
a common frequency – I can’t get a null with a loop antenna.
Cheers, Jim Moritz
73 de M0BMU
-----Original Message-----
From:
[email protected] [mailto:[email protected]] On Behalf Of Scott Tilley
Sent: 05 July 2004 08:22
To: [email protected]
Subject: LF: 2200m webpage updated
I've updated my 2200m section to
include some info on a new DDS by SM6LKM and some images of naval radio site
'CKN'...
