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I need a LND 725 Geiger tube and thought that I would ask this list before buying one from LND just in case someone had one that they would part with.

Dear Clint, Try contacting Eric Green at the Civil Defense Museum directly at: <webmaster@...> Good luck, ~Cliff

Stephen, Thanks for the reply. That looks like it's only for the Victoreen and not the Landers, Frary and Clark. ?Unless I missed it, I don't see where a capacitor was added to the PCB. ?This is

This might be what you are looking for? http://www.civildefensemuseum.com/docs/cpg4-1vic715rfit.pdf -Stephen N.

It was discovered that the Victoreen CD V-715, in order to improve calibration stability, had to be modified slightly and a procedure was provided. We have the document for the procedure. The

Thanks Mike, I have a line on one but I will get back to you if it does not work out. I really appreciate your offer. Lenox Subject: Re: [CDV700CLUB] Need pulse generator Lenox, If you still need a

Lenox, If you still need a pulser, I have a homemade job with set ranges and I have been traveling through the DFW area quite often lately.? If the CPM values shown on these panel plates would work

Lenox, old friend, I didn't realize that was you asking.Contact me off list and I'll fix you up with the perfect 0.3% CDV-700 instrument at no cost.George

Geo Dowell sell pulse calibrators that work on any model. The price has gone up a bit since I bought mine. He asks $150 for them now, but they are simple and work.

_ I have a Bicron Surveyor 2000 that I would like to pulse calibrate. Does anyone in the Dallas, Texas, area have a pulse generator that I could use to calibrate this instrument? I estimate that it

On my 720 and 717, drifting appears to be contamination on the high ohm resistors next to the triode under the cover. I looked at the procedure to clearn those and I feel I better leave that alone.

Clint: Is your issue just in the self check or zero settings or when the unit is switched to X0.1 range ? I had a CDV-717 which had a oscillating needle on the X0.1 range. Did you look at sec 8.3 of

Thank you, Michael. ?I bought an OCD-M-151 meter to replace a bad one my ion chamber survey meter and plan to practice on the bad one before tackling the ENI meter that's hard to find. I'd rather

Yes. ?I ruled out the second and third things shown below leaving possible moisture contamination. ?I tried desiccant but it didn't completely fix the problem. ?I would like to have more confidence

Clint: In my experience with vintage( 1950's 1960's) equipment, I have not come across a non-electrolytic cap that has gone bad due to age. Of course there are exceptions. Electrolytic caps dry out

Generally speaking, we feel there's only one way to trust the CDV- 7xx ion chambers detectors. That is to buy one fully calibrated from KI4U. The amateur is just not equipped, nor could he be legally

If you are worried about it, pull one leg off the PCB and throw it on a cap tester and look for leakage at half voltage rating, then at full. I personally have not replaced this type before and always

All, Please excuse me if this is not the right place for this but there appear to be no discussion groups for the CD survey meters. Does anyone know if the John E Fast capacitors are susceptible to

I see it's the 10x less sensitive 101 tubed model. Maybe he thinks that makes it worth ten times as much. Nope, greedy pricing on most of his other stuff too:

don't everyone jump on it at once..? there is a $1,250 ENI on E-Pay.? Can't tell if it's plated in gold or what but must be something special at $1,250.? ?;)