[Milsurplus] ARC-4 questions

[Unserviceable but Repairable]

> 3 pin units / marked 703 / multiplication factor?

You've pegged 'em Hue.  There's 2 xtals, rx & tx, in the holder in 6hmz range
& rig -civvy name WE233- multiplied by 24 thru chain of 6V6s.

Don't laff, 6V6 metal had 'button base' inside & served well.  But
6V6GT had usual 'pinch header' & long leads & wudn't do.

Navy put 'em in many planes in early '43 beating scr-522 by at
least half year.  ARC-4 140-144 & '522 100-156.  Range wasn't
Navy-matched for 2 years 'til arc-1.

Have 2 Navy radio lineups.  A Corsair fm early '44 & ARC-4 there.  Not 
in SBD in late '42.

Dunno possible 140-144 shipboard set, mebbe '233 only for 'command
svc'

Navy knew a good vhf thing quick

Me'n a pal have 2 12-volt 4Xs running here & a pair of matching
xtals might be fb.   They can easily be 'kissed' into 2m.
Or.... any fcc people out there?

Ask what time it is & comes a watchmaking lesson

  'rm aka marty