[Milsurplus] WWII Tower LF Transmitter Models- Info??

[C.Whitaker]

de WB2CPN
The BC-446 is not the LF you're looking for.
I have a lot of time with them, and every post-war
nav aid I can think of.  I retired in 1965.  If the tower
you are working on was in Britian, I'd say the radio
equipment came from some airplane radio shop,
or was provided by the Brits.
I used the BC-329 for ILS markers, and I've used
the BC-191 as LF beacons, as far back as before
the Berlin Airlift.  That's about all we had.  The T-5
LF transmitter came along much later, and then the
Gates URN-5 LF transmitter replaced them.
I still have the LF tuning unit that goes with the
BC-191 and the BC-375.  I don't use it, unless FCC
opens up the LF band for hams.
The BC-446-J could transmit voice, but that was
for the aircraft flying the four-course radio range.
It didn't work both ways, the range could transmit
the A-N pattern, or transmit voice, but not both at
the same time.  Trivia, but for voice the BC-446
antenna tuning system had a "Quarter Phaser",
(One pair of antennas had their RF signal shifted
by 90 degrees.)  That stopped the A-N pattern
switching, and placed the antennas into an
omni-directional pattern for voice.
Ah, memories.
73  Clete
++++++++++++++++++++++++++++++++++++++

On 2/14/2013 1:13 PM, Jim Haynes wrote:
> BC-446 is a 100 watt 200-400 Khz transmitter used for the A-N type
> of radio range, and also for voice.  Weighs 1000 lbs.  Has a remote
> control unit RM-45.  TM 11-811, T.O. 31R4-3BC446-11
>
> The military aircraft frequency was 4495.  3105 was for civilian a/c.
>
>
> jhhaynes at earthlink dot net
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