[Milsurplus] RBM Questions

[COURYHOUSE at aol.com]

Joe  congrats! on your finds!
 
The RBM is the first  Mil Radio I had as a kid.
no band spread  so touchy tuning  used to use a pencil eraser  against the  
knob which made it like a gear reduction thus allowing small  amount or 
knob movement.
 
 
I have been trying to  get the lower freq units to go  with it..  need to 
find a local one!
 
I too need to restore my HF one.. I am sure it will need    something it  
has been in garage   for 20 years
then I will play with it but  it will eventually end  up in SMECC  museum.
 
I was sure proud to have it  back in my youth!
 
Last time I had it fired up... if you wiggled the  cord  between the PS and 
the RBM you would get some sparking near connector  so  it  got  shelved.
 
I have sen these radios  in a portable  case 2 of them for field  use.. 
maybe on a beach?  I will need to hunt up some photos of them in  use  to go in 
 with the receiver  when it transfers to the   museum
 
 
http://navy-radio.com/rcvrs/rbm.htm
 
above link is  from My friend Nick's Navy radio site there are manuals  and 
photos there!
 
good  luck  with it!  stay in  touch and if  you  hear of any  LF MF ones  
near AZ  let me know!
\
 
Ed Sharpe archivist for SMECC   _www.smecc.org_ (http://www.smecc.org)  
 
 
In a message dated 11/6/2016 9:05:22 P.M. US Mountain Standard Time,  
milsurplus at mailman.qth.net writes:

 
This weekend, I picked up a set  of RBM receivers and power supply, and I 
have a few questions. I'm currently  working on the MF receiver. It still has 
all its original Navy tubes and looks  like it was never worked on. 


Here are my questions:


1. Are the .01  postage-stamp Aerovox caps in this receiver mica or paper? 
The manual says  that they're mica but I have never seen mica caps before in 
this large a  value.


2. What gives with the  bathtub caps? In my set, several are leaking what 
appears to be brown wax.  I've worked on quite a few military sets but I've 
never before encountered  military bathtub caps leaking wax like this. 
Needless to say, I'm in the  process of replacing them all. 


3. In what applications  were the RBM receivers used during the war?


As always, thank you for  your help and guidance. The HF receiver, which 
will be next on the bench,  supposedly has a dead short, so I'll soon be 
tracking that down. Given my  experience with the MF receiver, the bathtub caps 
will be my primary  suspect. 


 Joe  Connor




______________________________________________________________
Milsurplus  mailing list
Home:  http://mailman.qth.net/mailman/listinfo/milsurplus
Help:  http://mailman.qth.net/mmfaq.htm
Post:  mailto:Milsurplus at mailman.qth.net

This list hosted by:  http://www.qsl.net
Please help support this email list:  http://www.qsl.net/donate.html
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qth.net/pipermail/milsurplus/attachments/20161106/47e10bd1/attachment-0003.html>