[Milsurplus] Re: aircraft transmitter & dynamotor

Sun, 26 Oct 2003 23:23:41 EST

Hue,

Well, the short answer is "yes" in both cases.  You can't realistically key a 
large dynamotor of the PE-73 or DY-17 class at typical CW rates.  The spin-up 
time is on the order of several dots, and that only if you start with a 
looong dash.  Plus liasion sets like the SCR-287 (BC-375) weren't normally remoted 
to the flight deck anyway.  There wasn't any remote control box made for it.  
In some of the ground sets using the BC-191, provisions were made for remote 
control from distances of up to several miles.  But none of this remote control 
equipment was ever expected to be installed in aircraft.  It was large and 
heavy and intended for voice operation over field telephone wire.

The Navy sets ATB, ATC (AN/ART-13), ATD and the earlier GP series all had 
remote control boxes.  I'd have to go and get the manuals to check (I quit 
collecting aircraft sets a quarter century ago) but I think most if not all of the 
remote control boxes included a mode switch.  I know for sure that the 
C-87/ART-13 does, and for that matter includes a CW key of sorts (push button switch 
with a knob that looks like the knob on a J-37).  So the pilot (or copilot if 
there was one) in a Naval aircraft equipped with an ATC or AN/ART-13 could 
(probably) have sent CW.  If he knew it.  And if the dead radio operator had the 
Local./Remote switch set to Remote before he bought the farm.

In a message dated 10/26/2003 8:37:54 PM Central Standard Time, 
[email protected] writes: 
> So- let's look at this. If the radio man was out of commission, and the 
> pilot wanted
> to send a morse code urgent message, he should switch to cw, assuming his 
> control box had that option.
> But- if he left it in A3 position, and keyed the button, would the startup  
> run of 
> the dynamotor omit the first character or characters that were "keyed" by 
> the
> microphone?
> 

Robert & Susan Downs - Houston
<http://www.wa5cab.com> (Web Store)
<[email protected]> (Primary email)
<[email protected]> (Backup email)

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