[Milsurplus] BC348Q Usage

[Mark K3MSB]

Folks --

I finally got the 28V power supply rebuilt for my BC-348Q and used it
in this weekend's Classic Exchange contest.  Made about 6 QSO's with
it on 40 and 80 meters.

I've some questions about the usage of this receiver in WWII aircraft

First,  when operational frequencies were given out,  was there any
particular granularity as to the frequency itself ?   Today, one can
specify 7.03128 with no problem,  but with the granularity of the
BC-348Q, one would be kept to 25 Khz, 50 Khz, etc.

Second,  since there is no on-board calibrator, I assume all
frequencies would be approximate,  and that to keep the radio
relatively calibrated would be a depot level function, or perhaps a
reference signal came from an ART-13?

Finally,  was the 348Q use primarily as an air to ground radio, or air to air?

Really enjoyed using the BC-348Q.  I had it paired up with my B&W
5100B.   An ART-13 is on the shelf, and I'm looking forward to getting
that working soon.

73 Mark K3MSB