[Test-Equipment] HP 403A Solid State ACVM

[Bob Kulow]

> 
> Hi,
> 
> Found an old HP 403A ACVM in a box in my attic.  I'm looking 
> for a manual 
> copy or scan.  Looks as if someone was into it a long time 
> ago.  I think the 
> manual or scan would greatly increase my chances of getting 
> it working as 
> close to original as possible.  This one also used those 
> small mercury 
> batteries that are unobtainium now.
> 
> Any or all help or leads greatly appreciated!
> 
> 73, John, W4NET 

Hi, John.

I've had a 403A for many years - good little meter.  I found 
that replacing the unobtanium Hg cells with alkaline AAA cells
did not affect the calibration at all.

I have a manual for mine.  I may have a spare.  I'll look & see 
what I do have.  I'll let you know.

73
Bob WA2UEH

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