[Milsurplus] U.S. Army TRF LF receiver 1934

[Kenneth G. Gordon]

Speaking of TRF receivers, I would guess that by the time of the ramp-up to 
WWII, the TRF receiver-technology would have been pretty advanced by 
then.

In my very limited experience, I found the TRF RAL receiver to be very, very 
effective on HF up to 23 MHz. Other than the typical, and to my mind, poor 
frequency readout, it was fully the equal of any fairly good superhet of the 
period and even later.

Were there other HF TRF receivers which were well-regarded at the time?

I understand that the Germans used a lot of TRF gear during WWII, but did 
the Allied side follow suit?

Ken W7EKB