Beautiful setup!  According to the book 90 South by Admiral Richard Byrd, a TBW was flown into South Pole Station to serve as its first main HF transmitter during the building of the base in the 1950s.  I don’t know if there are any photos of it.  It’s not stated what the first HF  transmitter used there was, but apparently it was a much lower power unit, based on the discussion about the TBW set’s arrival.  Perhaps an RT-77/GRC-9?

Maybe Mike, WU2D knows!  He did an excellent article for the AWA and Electric Radio on the subject of radios used by the Byrd Antarctic expeditions.

Charlie, KA1GON has a complete TBW/RBM field system, IIRC including the gas powered 800 Hz genset.

73 de Chris AJ1G 
Stonington CT
Sent from my iPhone

On Sep 30, 2025, at 15:09, Tim <[email protected]> wrote:


Hi Paul - Well the only TBW set that I've seen was set up about 50 miles from the Pacific Ocean.
It's YOURS in case people don't know what a TBW consists of...LOL 
Cheers and Great Job!  Let's do that again sometime...
Tim
N6CC

On Tue, Sep 30, 2025 at 11:07 AM Paul Thekan <[email protected]> wrote:
G'day all
 I've never seen a pic of the TBW/RBM sets deployed in the the field other than the staged pic in the manual. I've seen some pics of the set up inside a building..but never in operation out in the Pacific war.
 Has any one..maybe I've missed something??
Tnx 
Paul
N6FEG 

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