[Milsurplus] ID'ing a unit

[holden]

Why would they use a 115V 60 cycle unit with a TBW transmitter which takes
115V 800 cycles? Also the TBW has it's own (very large) keying relay, not
conducive to high speeds. And, the keying speed of 50 WPM doesnt jibe with
RTTY speeds, not to mention that the TBW would make a lousy RTTY
transmitter. How would you shift the RF freq?

Howie WB2AWQ

Mike Hanz wrote:

> Probably a dupe, but NAVSHIPS 900,109 of Sept 1945 sez:
>
> "For use with TBW*.  Provides for starting and keying transmitter unit
> over a single pair, or one wire and ground.  Transmitter starts when key
> is momentarily closed and remains on for a delayed time interval after
> last key impulse is transmitted.  6/2/44"
>
> There is an edit to this:
>
> "Key line resistance 35 DC ohms max; operates from 115/1/60.  9 watts
> standby, 18 watts operating, keying speed 50 words/minute.  For general
> radio use."
>
> __________________________
> Milsurplus mailing list
> Milsurplus@mailman.qth.net
> http://mailman.qth.net/mailman/listinfo/milsurplus