[ARC5] ARC5 CW Question

[AKLDGUY .]

I had never heard of a Lucy. She must be a sister to the Gibson Girl  (-;

http://en.wikipedia.org/wiki/Survival_radio

73 de Neil ZL1ANM


On Sun, Jun 22, 2014 at 4:44 PM, WA5CAB--- via ARC5 <arc5 at mailman.qth.net>
wrote:

> As Mike already wrote, no.  I'll add that the antenna relay he mentioned is
> the one in the BC-442, not the one in the transmitters.  The relays in the
> transmitters are transmitter selectors.  As you rotate the channel selector
> switch on the BC-451, you energize the two relays in one transmitter, and
> they stay energized so long as power is on and you don't change the channel
> selector.
>
> The system operates in full break-in mode (the transmitter dynamotor runs
> continuously in CW), which means that as you are sending, the receiving
> station can interrupt you by simply holding down their key periodically
> until you
> pause.  Civilian rigs very seldom have this capability.  The "delay" you
> mentioned prevents break-in.
>
> Robert Downs - Houston
> wa5cab dot com (Web Store)
> MVPA 9480
>
> In a message dated 06/21/2014 19:00:45 PM Central Daylight Time,
> arc5 at mailman.qth.net writes:
> > I was looking through the SCR274 manual, trying to figure out the
> > original control circuitry and realized that they used a boat load of
> relays!
> > It looks like there was a CW  "break-in" system of sorts, but I haven't
> > found a delay anywhere.
> > So, my question is: Do all of those relays have to engage very time you
> > hit the key?
> > If so,that's a whole lotta clacking goin' on!
> >
> > Jim
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