[R-390] I was unaware they made this cover(pics)!

[Barry Hauser]

Hi Rich & Crew:

They're not all that common, but not all that rare either.  From time to 
time, Fair Radio puts individual flip-down covers on the e thing.

I have one sample, not installed.  No markings as to manufacturer.  Not all 
that high-tech -- just a piece of sheet metal, stiff wire, a spring for 
friction to hold it in position and a piece of felt.

The urban (or rural) legend says these were used by 3-letter orgs. like NSA, 
CIA, to keep monitored frequencies away from the prying eyes of passers-by. 
However, someone posted a link recently to a photo on a website that showed 
an R-390A with one of these covers in a mil radio shelter.

They would also be particularly handy if monitoring the ball game.

For anyone who may be interested, I am making available a small number of a 
newer version for only $25 each.  No need to remove any screws -- these are 
magnetic, business card sized.  Pay no attention to the "Ajax Plumbing & 
Heating", "<town name> Fire Dept.", or "So and So Realtors",  etc. printed 
on them.  Just a countermeasures diversionary feature.  You might already 
have some -- keep an eye out next time you go to the fridge. ;-)

Barry


> Hi All;
> I never seen one of these but then again I only have a few R-390A's.
> Someone told me that these were used to "Hide" the receive frequency in a
> Military receiving station where they had many receivers.
> Does anyone know who made these?
> Where they put on or made by the Military?
> This one is on a Collins R-390A
> Pic:
> http://www.myradioroom.com/r390adialcover1.jpg
> http://www.myradioroom.com/r390adialcover2.jpg
> Tnx & 73..
> Rich WA2RQY