"hayseed" wrote in message
m...
w9gb wrote:

Make sure that ICM did not quote you for:

1. A high precision crystal (they may do that for this one since it
determines IF)

2. Entire L6 assembly
( Replacing the entire L6 shield can -- as described in W1FSN NC-300
revision - page 18 of 18)
ftp://bama.sbc.edu/downloads/nationa...sn/300fsn.djvu

ICM likely has the documentation for that entire mod -- and may be
referencing that -- and may be more than you want.

w9gb
I was interested in doing the mods as outlined in the above referenced
field service notes.
I had downloaded the info from bama a long time ago and am just now
starting to get the rx into working codition.

Xtals are used in upper/lower side band select which replaces L6 assembly.
I a surprised to
learn that ICM is able to research the NC-300 that well. These guys must
be good!

Royden R. Freeland founded International Crystal Manufacturing Company
(ICM) -- a true garage operation start in early 1950s. He was a great asset
to the radio industry.
http://www.icmfg.com/

In 1978, Royden Freeland Sr. and his wife were killed in an airplane crash.
The ICM operation was then continued by their son, Royden Freeland Jr.
taking day to day control of operations.

They have a very DEEP knowledge library of radios.

They were a staple for the land mobile radio service (Motorola, GE, RCA,
Johnson, etc.)
and Collins selected them as a major crystal supplier.

They have traditionally been amateur radio / experimenter friendly.

w9gb