[ARC5] RF ammeter

[Kenneth G. Gordon]

On 4 Aug 2014 at 19:15, Robert  Eleazer wrote:

> I have an RF ammeter if anyone needs one.  It is "U.S.N. Type CAY22026A, Type
> NT-33, 25 cycles to 20MC."  However it reads 1, 2, 3, 4, 5, and I guess that is
> whole amps.
> 
> I picked it up at a local hamfest for very little, on some club's bargain table.
>  (I think they may have been the same guys I bought a Heathkit SG-6 from for
> $1.50 a few years before, which indicates some degree of insanity).
> 
> Would this have a thermocouple in it?

There were generally two types: 1) those with the thermocouple inside the 
meter, and 2) those meant to be used with an external theromcouple.

All those which were meant to be used with an external thermocouple were 
usually marked so on the face of the meter or on the case.

I am betting yours has an internal thermocouple.

Ken W7EKB