[R-390] Mason Labs R-390A?

[Bob kb8tq]

Hi

Your dose of trivia for the decade: 

Manson Labs did indeed modify a group of R-390’s back in the 1960’s. 
The target audience was indeed the NASA flight recovery folks. Manson
was acquired by Halicrafters a bit after the contract was completed. The
Halicrafters folks decided to move the Manson stuff from CT to Chicago. 
That didn’t sit very well with the bulk of the folks at Manson. They went
off and started a crystal oscillator company - Vectron Labs. 

Bob

> On Jan 30, 2022, at 2:27 PM, W2HX <w2hx at w2hx.com> wrote:
> 
> Hi all,
> 
> I came across a guys about 30 minutes from me who is selling an EAC R-390A radio. I haven't asked what he wants for it but I thought it was interesting. It has some mods by Mason Labs. He said when he bought it (ages ago) the seller told him it was used at NASA. Here are some pix of some of the mods.
> https://w2hx.com/?prefix=x/R-390A/Mason%20Labs/
> 
> Is this a well-known set of mods or a rarity? Anything about them that improves the R-390A? Or are they just some specialized use case.
> 
> 73 Eugene W2HX
> Subscribe to my Youtube Channel: https://www.youtube.com/c/w2hx-channel/videos
> 
> 
> 
> 
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