[R-390] URM-25, RF leakage and test gear

rbethman rbethman at comcast.net
Thu Mar 1 16:43:06 EST 2012


Steve,

I've had the same results with mine also.

It simply is time to go through all the old caps and a few resistors to 
ensure the old gal stays up and running for an extended period of time.

I plan to keep her around for quite awhile.

Even though I also have more modern equipment, the digital HP-3336B, I 
love the old gal!

She has got a certain thing about her.  I'm only making her a little bit 
better, and overhauled.

It is sort of like keeping the HP-410B as primary, with a TS-505D/U 
also.  Even though I have a good quality DVM on hand.

Then I also have a TEK 5440 that can read up to 25Mc, and down to less 
than 1mv per graduation.

All things get brought to bear when necessary.

My primary reason for the HP-3336B was to use as the VFO tied to my 
BC-610 and/or T-213.

However, it is very readily shifted in duties since I have a WECO to BNC 
adapter, AND a cable already built with the WECO connector on one end, 
and a BNC on the other.

Flexibility is a great commodity.  Makes challenges easier to overcome!

Bob - N0DGN (Never say Die!)

On 3/1/2012 4:24 PM, Steve Toth wrote:


FWIW, when I aligned the HQ-129X I picked up, I used my URM25D with a frequency counter hooked in externally to the output.  Worked great.  After warm-up, the URM25D was rock solid and I was able to bring in the required freqs spot on.

-- Steve

Solution for America: "We don't need to tax millionaires more, we need more millionaires to tax"




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