[R-390] Hollow State News

[Roy Morgan]

At 01:14 AM 8/19/2005, Barry Hauser wrote:
>Here's Ralph's current email address:
>
>r.sanserino at worldnet.att.net
>
>Contact him for available reprints.

URM-25D Owners,

While you are at it, find out if Ralph can still supply copies of:

"URM-25D Overhaul Notes" by Dallas Lankford 11-88, revised. 1-94, with copy 
of HSN Supplement from Issue 41 about the "Terminal Board". (The Overhaul 
Notes themselves did not appear in HSN, only a notice that they were 
available separately.. There are about 18 pages if I remember 
correctly.  Dallas has not made a similar set of notes for the -F model, 
unfortunately.)  The original cost of these notes was VERY modest, and no 
URM-25D owner should be without one.


Additional articles about the URM-25 are:

HSN Issue 34 Winter 1994-95.  Short Subjects: "Balky Modulation Oscillator 
in the URM-25, by Allan Douglas (about the R-C "T network" and padding a 
capacitor to make it work again.)

HSN Issue 41, Spring 1997
  - URM-25D Rebuild Notes Supplement (a drawing of the Terminal Board, 
Courtesy of Ray Mote)
this issue also includes:
  - Captain Lee's Product Detector for the R-390/R-390A - Revisited - Part 2
  - "SSB Adapter" - Revisited (see HSN #10 for Lankfords initial report): 
bridge rectifier and 6Uf capacitor only found inside.

Roy


- Roy Morgan, K1LKY since 1959 - Keep 'em Glowing!
7130 Panorama Drive, Derwood MD 20855
Home: 301-330-8828 Cell 301-928-7794
Work: Voice: 301-975-3254,  Fax: 301-948-6213
roy.morgan at nist.gov --