[Milsurplus] ARC-3

[Unserviceable but Repairable]

Many folks know the ARC-4.  But no 1st-hand testimonials in the thread.

I think it was our 1st vhf - a hastily adopted copy of the WE233... vhf 
2-way for the Douglas Racer.  Read DC2/3.  And if you wonder about 
term 'racer,' pse write.

If you can find one, they're almost a plug 'n play.  Run on 12V* and
140-144 mhz w. stock xtals (two elements in the holder)

A 1939 design w., of all things, a guard channel.  Something awol on
the ARC-5 vhf & '522.

Will NOT run on 6V6GTs.  Must have 6V6 metal or GTA.  Reason is
lower-loss button header in latter examples.  ARC-4 lit sketchy &
ignores that, love someday to see if mentioned in WE233 book.

Mighty neat set & quite a piece of history that, it appears, was
bought big-time by Navy for air-sub 2-ways (see uss pampanito) &
other stuff.  I do know they wren't in pacific SBDs in '43 tho.  
AWA art'l on F4U radio consist for '44 shows ARC-4.  Big help.

IARU hasn't levied on vhf yet.  Wonder how many hundreds of hrs
will get spent on legislation for the 20-odd ww2 vhf 2-ways running
on planet earth.  Anyone notice 160 & 80 'advisory' broken into 18 
'intervals,' etc., etc?  SDR here we come.

  'rm

*Do test 'em w. current-limited PS 1st.  HV @, say, 500v to torpedo
 bad bypasses.  That to avoid KK5F heartbreak of dyno slow-down.
 There's 2 here & one ran on a bench supply 'til a 2nd dyno found in a
 AL flea recently.  No substitute for luck.  Tho it takes a committed
 maven to spot said dyno.  Reminds one of the pony in the poop fable.

 For years I've been wanting to see the ARC-3 robo-tune feature work!
 Did W7dia read this?