[R-390] R390A meters

Tom M. courir26 at yahoo.com
Mon Jun 11 21:17:40 EDT 2018


 The latest meters I encountered were made by A&M for ex NSN (audio meter) 6625-01-127-4037, 1989 date code. Not sure if they had radium.

    On Monday, June 11, 2018, 7:03:45 PM CDT, W2xj <W2xj at w2xj.net> wrote:  
 
 The military at some point started replacing Radium meters as the radios came in for maintenance and new contracts were built with the Radium free meters.  

Sent from my iPad

> On Jun 11, 2018, at 7:56 PM, Dave Merrill <r390a.urr at gmail.com> wrote:
> 
> I have two 67 contract EACs and both have non-radioactive meters, verified
> with a Ludlum Model 2 Survey Meter.
> The Carrier meters are marked 59.7289 and the Line Level meters are marked
> 59.7290.  All these meters glow bright green when exposed to a UV source.
> 
> I also have an older R-390A and both meters have had the Ionizing Radiation
> Symbol sticker applied.  The Ludlum goes nuts when brought close to the
> glass on these.
> 
> Dave
> N9ZC
> 
> On Mon, Jun 11, 2018 at 12:22 PM rkofler--- via R-390 <r-390 at mailman.qth.net>
> wrote:
> 
>> 
>> The recent posts about replacing the meters on R390A has me wondering. I
>> have a 67 EAC that appears to have the original meters. They are black face
>> with white scale and needle and they do glow in the dark. I read previously
>> that those meters are safe as long as you don't disassemble them. Is there
>> new info that contradicts that thinking?
>> Roger K7DDG
>> 
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