[Milsurplus] SC-901X questions

[Jim Whartenby]

HuePerhaps Exciter-Receivers were initially designed to reduce system loss and keep the power hungry components close to the power service, generators and antennas.  These type systems appear to be common in the late 1950s through mid 1960s.  The Collins 310F series is an example.  
The automatically tuned 310F-1 is a repackaged ARC-58 in a five foot rack.  Even comes with a 60 cycle to 400 cycle rotary inverter to supply the servo motors.  The 310F-6 is essentially a KWT-6 less the high voltage power supply and PA in the standard seven foot rack.  I have examples of both but only the 310F-6 is operational.
As has been mentioned, various power amplifiers were available to bring up the RF Exciter output to just about any level required.  45 kw from the 205J-1, 2.5 kw from the 204H-1 both are automatically tuned and were listed in the 1959 Collins catalog.  This catalog also lists the 204C-1, a 10 kw amplifier and the 204F-1 a 2.5 kw amplifier, both were manually tuned.Jim


      From: Hubert Miller <Kargo_cult at msn.com>
 To: "milsurplus at mailman.qth.net" <milsurplus at mailman.qth.net> 
 Sent: Tuesday, March 27, 2018 12:34 AM
 Subject: Re: [Milsurplus] SC-901X questions
   
This doesn't address why a SSB exciter was built into its own package, when the power output 
from it would not suffice for communication on its own. I didn't bring mine back with me from the
trip, but I don't recall rackmount ears on it either.  Maybe next time. I'm sure it will be super 
interesting to pull the cover and see the insides. 

Diving under a desk wouldn't protect you from a nuclear blast unless you were far enough that
the pressure wave was lessened at your location. Then it might help you ward off some flying 
glass and other junk. But even if you were closer, too close to survive the initial effects, very few
people would just give up, say why even bother. That's not human nature. 
-Hue 

>CD was Civil Defense. Back when 
the Nuclear Holocaust was just 
around the corner.

Tons of that stuff sort of went away 
and never heard from again.

As for the SC-901X, it was designed 
to survive a Nuclear blast. People 
really got paid big bucks back then 
to think up these requirements. 

I remember when schoolkids had to 
crawl under their desks in the event 
of a Nuclear attack. Like that would 
help you survive a 20 Megaton blast.

73, Dick, W1KSZ

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