[MRCA] AN/VDR-27 Radiac Meter

[Peter Gottlieb]

I have one of the newer ones and it works pretty nicely.  I got a package of old 
lantern mantles, the ones with thorium, which I use as a test source and it 
nearly pins the meter on the most sensitive 0.5 mR scale.  Old radium dials 
really light the thing up as well, one old altimeter I have gives me 2.5 mR 
through it's glass!  Note that Roentgens are not used as a unit any more, 
everyone's switched to Sieverts (Sv) so you have to convert.  If you want the 
thing calibrated that can cost a lot of money and very few places do it. I got a 
tech to compare it to some similar meters and gave me a "seems 'bout right" 
judgement which is fine for my informal uses.

Also know the difference between Roentgens and REM; read up on it and you'll see 
what I mean.

Peter

On 12/20/2013 6:42 PM, Ray Fantini wrote:
> The old vacuum tube version is worth $50 and the newer solid state version maybe as much as $100 although have seen them sell for as low as $20 complete with sample and priced as high as $250.00 They do a fair job detecting radium but no where near as good a job as a modern instrument. Don’t know what they had in the test sample but imagine that may be an issue to ship by mail these days, although it was in a lead canister. Spare pickup tubes add to the value, also if it’s clean and has a full set of D cells.
> Ray F
>
> ________________________________________
> From: mrca-bounces at mailman.qth.net [mrca-bounces at mailman.qth.net] On Behalf Of scottpastor [scottpastor at gmail.com]
> Sent: Friday, December 20, 2013 4:17 PM
> To: mrca at mailman.qth.net
> Subject: [MRCA] AN/VDR-27 Radiac Meter
>
> I have an AN/VDR-27 radiac in very nice shape that I'm going to sell.  It's grey and marked "US Navy-Bureau of Ships," has the steel box and suite of accessories (minus the test-source).
>
> Is anyone interested?  Does anyone know what it's worth?
>
> Happy Everything.
>
> Scott Pastor
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