[Milsurplus] B25 Aircraft Maintenance Manual - Radio System

[Mike Morrow]

>The bulk of B-25s were the later H and J models (1000 of the H type and 4318
>of the J type) that entered service in 1943 and continued in production to
>the end of the war. By that time I would imagine the BC-610 had been
>superseded by an ART-13.

I think you mean that the AN/ART-13 replaced the BC-375.  (SCR-287)

That aside, I'd doubt many WWII B-25 aircraft ever had an AN/ART-13 installed before most were scrapped.  I think Pacific Theatre B-29 aircraft were some of the few late-war aircraft fortunate to have the AN/ARC-8 invariably installed.  

The AN/ART-13 was a tremedously expensive unit.  Walt Hudgins reported in ER that it had a WWII price tag of more than $14,000 each.  I have my doubts about that, which would equate to $150,000 today, but no doubt there would be no rush to backfit them into ETO aircraft that already had a servicable liason set in place.

BTW, the Collins AN/ARC-58 HF SSB set that was the mainstay of long range communications for USAF SAC aircraft through much of the Cold War after 1958 had a system cost of about $100,000 in today's dollars, so maybe Walt's price quote is not that unrealistic.