As of early 1946 there were two LF/HF transmitter development contracts for shipboard and shore station use - TEG and TEJ.
TEG (RCA) includes remote dial-up 10 channel capability similar to the later AN/URT-2 but is low power only (no booster)
I just got a batch of really nice TEG prototype photos to scan
TEJ (Federal) includes the modular concept with optional 500w booster and also dual transmitter configurations like the URT-2 series. Also with 10 dial up channels and removable drawers requiring extender cables.
The RCA TEG contract was dated March 1945. I don’t know about the Federal TEJ contract date.
So evidently the TEG (RCA) was a loser and the TEJ project became the AN/URT-2 series.
Federal's article on the URT-2 series development says 1947 contract and 1948 prototype
It was an ambitious design including a synthesized VFO, autotune RF output, and autotune antenna tuner - all with remote channel dial-up.
The URT-2 series acquisition contract was dated 1949 and the approval date in the manual is January 1954. A preliminary manual is dated February 1953.
The AN/SRT-14 series is a simpler (no autotune or remote channel selection) and more maintainable version of the URT-2 series rhat came along in late 1955.
The URT-2 and SRT-14 series both included a synthesized VFO with AM, CW, and FSK and 100w output from a 4-400 (or 500w if you added the “booster” ps/modulator)
Some URT-2 series info is at
I’m always looking for additional info, photos, corrections, etc.
Cheers
Nick K4NYW