[Milsurplus] TCS Low-Power Operation

[WA5CAB at cs.com]

I think that it was a holdover from the Atlas 56Q, which was the 
transmitter only.  For it, Collins offered two power supplies.  The larger one 
supplied the (to most of us) normal 400 VDC.  The smaller one (and no doubt the 
cheaper one) supplied 230 VDC.  I would have to check the manual to confirm it 
but assume that both supplies furnished 12 VAC for the heaters and 12 VDC 
for the relays.  

So I always assumed that it was a dollar thingy.

Robert D.


In a message dated 01/25/2017 18:18:31 PM Central Standard Time, 
ka1kaq at gmail.com writes: 
> PT boats on night patrol? No idea, actually. Would be different if it 
> were switchable. Maybe it was just an option they made the procurers aware of 
> as an extra selling point?
> 
> 
> ~ Todd/KAQ
> 
> 
> On Wed, Jan 25, 2017 at 7:06 PM, Hubert Miller <Kargo_cult at msn.com> wrote:
> >> Anyone know the "why" of TCS low-power operation?
>> I think this is only referred to on the transmitter schematic, where it, 
>> if i recall, shows screen resistors jumpered.
>> Why would they want to operate on the same B+ as the receiver?
>> My first thought was harbor use, but no other boat radios turned down 
>> their power for local use. You had
>> everything going from 10 watts to 150 watts.
>> What say?
>> -Hue
>> 
> 
> 
> 
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