[CW] Re: Help answering a question... please

Sun, 9 Nov 2003 23:57:09 -0500

Neither a vibrator or dynamotor would be powered by a push to talk
microphone switch.

The transmitter needed the vibrator or dynamotor to supply B-plus voltages
to the transmitter and had to be energized before transmitting.  The switch
would also connect the filaments of the transmitter to the aircraft battery
which needed about 20 seconds to heat up before they could send.

The power needs of the radio receiver could be taken care of by connection
of filaments to the aircraft battery and by using suitable B and C cells for
the plates, screen grids and grids of the vacuum tubes.

If the transmitter was keyed by using the microphone button, it was used in
transmit mode - which had the dynamotors cranking - and the transmitter
tubes warmed up and ready.

During periods of extended receiving, the dynamotors were turned off as they
were if they made any "hash" or motor interference to reception.

73

David Ring
N1EA

----- Original Message -----
From: "rb" <[email protected]>
To: <[email protected]>
Sent: Saturday, November 08, 2003 10:05 AM
Subject: Re: [CW] Re: Help answering a question... please

> This is a very good question.  Really, what it seems to break down to is
> this:
>
> 1.  Did the radio have a dynamotor?  Or, did it use a vibrator pack?
>
> 2.  If dynamotor, could a dynamotor spool up and follow mike keying, or
> would there be disruptions?
>
> 3.   Or, was there a way the dynamotor could be switched on and kept on,
> independent of mike keying?
>
> I've asked this on another forum, and we'll see what kind of answers we
get
> over there.  I'll keep the CW group posted.
>
>
> _______________________________________________
> CW mailing list
> [email protected]
> http://mailman.qth.net/mailman/listinfo/cw
>