[Milsurplus] TBW Transmitter power-ON

[Mike Hanz]

Occasionally, you can find variable frequency lab inverters on ebay that 
will do the job, if you're patient.  
http://aafradio.org/sidebar/Behlman_100-C.jpg is one example - winning 
bid for this one was only $16.  The only sound is a quiet fan.  The 
400Hz oscillator drawer has a phase shift oscillator that's easy to 
modify for 800~.  Perhaps a computer UPS could be modified in a similar 
way - they seem to bring fairly low prices, especially without 
batteries, and the power capabilities are about right.  The older lab 
inverters with analog meters are normally fairly reasonable, but be sure 
you can get a manual...they aren't as common as radio manuals seem to be.

73,
Mike

mac wrote:

>I would be interested too.  I currently run my GP-7 off the 115/230V,  
>60Hz to 115V,  800 Hz MG set originally built for the TBW.  Pulls down  
>20 amps at 230V and that 800 Hz alternator does some kind of howl!   
>Thought about applying some kind of chopper at the primaries of the  
>800 cps transformers but haven't worked up a design.  Would apply to  
>the TBW and GO-9 too, of course.
>