Fair Radio has repros


"Fred W4JLE" wrote in message
...
I am looking for a schematic for a Collins 18 S-4. It is apparently a 10
channel 100 Watt tranceiver that was used in aircraft. I have two of them
that have had the dyno's removed. They look pretty hefty with an 813
modulated for AM by a pair of 811A's. They have a removable cover on the
front to manually change channels. It is simply a rotary switch with a
screwdriver slot.


The only source I found wants $75.00 for a manual for what is probably a
$10.00 radio.

Thanks all

Fred,
Maybe I can help. My father was a field engineer for Collins Radio
from 1952 to 1955 and worked with the 18 S transmitter/receiver and 180
L antenna tuner.

I have saved things from those days for sentimental reasons. Turns out,
I have two copies of the 18S-4 instruction book. I thought it was just
an operators manual, but it's almost a half inch thick, and does have a
schematic of the set and parts list and pretty good pictures. It's a
second revision dated November 1953.

I don't need two copies, so I'll bet we can make a deal that will at
least give you some place to start without you spending your life's
savings. I'll bet Art Collins would turn over in his grave if he heard
you call his 18S-4 a "ten dollar radio".

Of interest is where did you acquire these units?

John