[Milsurplus] AN/MRR-2 receiver video - rare prototype

[Kenneth G. Gordon]

On 29 Dec 2016 at 18:29, Ray Fantini wrote:

> Perhaps it´s was an opportunity to provide the USMC the same drift and snapping 
> levers

Both of which were fixed later by RCA, and can now be fixed by users. See this:

http://www.roveroresearch.org/home/boatanchor-radios/srr13

and

http://www.roveroresearch.org/home/boatanchor-radios/srr13/srr-13a---switch-arms

> that the Navy valued? It looks as if it did not get far beyond the prototype 
> and field test though.

Apparently it went further than that, but there were very few made or implemented.

In addition to those pesky switch-arms, and the drift, another big issue with them is that the 
RF and HFO coils often go bad: open or shorted. Despite being sealed, they get corrosion 
in them.

These can also be fixed, although it is a big PITA. 

I have a Morris Coil-Winder that makes the job a bit easier...

The rather huge manual gives exact specifications on the coils.

Still, I have always liked the SRR-11/12/13 when they are working to specifications.

I understand that the Navy radio operators roundly hated them though...and I don't blame 
them one bit. They must have been a maintenance night-mare in that service.

The later R-390/URR and even later yet R-390A/URR were far more reliable.

Ken W7EKB

---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus