[Milsurplus] I came upon a R390A/URR EAC

Sat Jan 30 08:47:05 EST 2016

You might try using a vacuum cleaner and brush, Hutch.  The main reason 
I say that is the first thing I ever learned in a machine shop - blowing 
off a machine with compressed air is verboten and can get you 
terminated.  After rebuilding a couple of my machines from the ground 
up, I found out why...compressed air, even if "gently" blown, has an 
amazing ability to transport fine particles into places you would never 
expect.  You can actually do a very good job with a brush and one of the 
vacuum cleaner small accessory tool sets that are made for cleaning 
computers.  Then you might not have to worry about some weird 
intermittent cropping up because of damp sawdust/debris where you don't 
want it.

Just something to think about...

  - Mike  KC4TOS

On 1/29/2016 9:50 PM, John Hutchins wrote:
> All -
>  Todd - Thanks for the advise and encouragement.    The unit looks 
> good considering where it was located, meters and all look like the 
> pictures online.  I do not plan to turn a dial or switch at this 
> time.  I will take the Air hose and gently blow out or brush off as 
> much sawdust as possible,
>
>                                                       I will take 
> pictures and Post on google share and send a link.
>
>
>   A bit preoccupied so please forgive my late responses:
>   1.  I have contractors coming in Monday to "Fix" a few items in the 
> HVAC ducts so I am moving furniture this weekend and covering things up.
>  2. The internet  is also getting fixed tomorrow as the line comes and 
> goes.  The download/upload rates are all over the place.
>    10KBS to 75MBS , I am supposed to see ~ 50MBS down and 5 MBS up.
>
>    I am supposed to be working from home next week for my day job that 
> pays the bills, while the HVAC gets "fixed".  So I am a bit stressed 
> over the whole situation at the moment.
>
> Please be patient;
> Thanks
> Hutch
>
>
>
> On 1/29/2016 8:23 PM, Todd, KA1KAQ wrote:
>>
>> On Fri, Jan 29, 2016 at 8:58 PM, John Hutchins <jphutch60bj at gmail.com 
>> <mailto:jphutch60bj at gmail.com>> wrote:
>>
>>     All -
>>     Well considered and offered a sum for both, the one with no top
>>     cover was filled with sawdust, in a 30" sloped cabinet, with a
>>     heavy line conditioner.  The weight and mess was not worth the 
>>     effort.  The seller thought it was worth more being in a larger
>>     cabinet. So I took to haggling over one that had all the outside
>>     parts and a "nice small" black wrinkle - tex cabinet to boot.   I
>>     do not plan to restore the unit, as I have no time to do so;  The
>>     job kind Ah getN- N -the way of my hobby.  So I saved what I could.
>>     I am located in Austin Texas, South Austin, that is.
>>
>>
>> Congrats on the find, Hutch. Better to save one than none, even if 
>> you can't keep it. They're great receivers, fairly easy to work on, 
>> but can certainly chew up a chunk of your time getting one back into 
>> prime working condition.
>>
>> A couple things to keep in mind. First, in probably 99% of the cases, 
>> the front tag means nothing. Since most of these sets went through 
>> depot servicing and are of a modular design, a 100% EAC unit would 
>> become a mongrel the first time something serious enough broke to 
>> require a module swap. You're likely to find modules from Motorola, 
>> Teledyne, Collins, EAC, Capehart, and numerous other manufacturers 
>> installed. The bad module would be swapped out for a working example 
>> and the defective one put on the shelf for later repair, after which 
>> it would end up in another R-390A. Tags were even swapped when panels 
>> were repainted. Nothing wrong with this if someone is just looking 
>> for a decent, complete set to clean up and use. Few folks require a 
>> 'purebred' with all matching modules as it really gains you nothing 
>> but bragging rights, something that means less everyday in the world 
>> of old radios.
>>
>> Second: meters - does it have them installed? Are they the correct 
>> ones? If so, that's a BIG plus going forward as later on down the 
>> road the gov't started pulling them due to the scary/icky/menacing 
>> radioactive material used to make them glow. As long as you don't 
>> crush them and sprinkle on your food or sleep with one taped to your 
>> face, you should be just fine. I've had both R-390 and A models for 
>> decades now. My three year old daughter is a bigger threat to my health.
>>
>> Lastly, being fairly clean/complete/working to some degree of course 
>> makes a difference in the price. Cracked clamps on the gears are a 
>> problem that doesn't usually reveal itself until you try tuning in a 
>> signal. But again - if you're selling as-is, not trying to hype it 
>> like the yo-yo on ebay does, no problem. Buyers won't expect a 
>> perfect set for a cheap price.
>>
>> Of course, if it *is* a completely EAC-built unit with no hacks and 
>> it cleans up and works, there are folks out there who pay $800 and up 
>> just to have one. EACs were the late production units, they even sold 
>> some on the civilian market back in the late 60s/early 70s. The tag 
>> has a little rocket ship on it. Collectors go nuts for those.....
>>
>> Good luck with it, and thanks again for saving it from an unknown future.
>>
>> ~ Todd,  KA1KAQ/4
>>
>>
>
>
>
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