[Amps] Fwd:Re: More Rumors

[Joe Subich, K4IK]

> How many devices and or push pull pairs did they use for the 
> power involved?  

I'd be interested in that info, too. 

> I do know using FET's you can get by with one push-pull circuit 
> and paralell FET's on both sides. This is a big advantage over 
> using transistors and having multiple push-pull circuits with 
> splitters and combiners.

It looks like Advanced Power Technology has some 300 volt VDMOS 
FETs that do 750 watts in modes A-E (ARF1505).  A push-pull 
pair of them would be very close to legal limit (US) from one 
module.  Two of those modules could be run at 75% ratings with 
splitter/combiner or in push-pull to generate a conservatively 
rated legal limit device.  Of course with 17 dB gain, an ARF1505 
amplifier would require a drive stage (or the 400 watt FT-9000 
<G>).  

Anyone know what the devices cost? 

73, 

   ... Joe, K4IK 
  
 


> 
> *********** REPLY SEPARATOR  ***********
> 
> On 4/21/05 at 4:49 PM Vic Rosenthal wrote:
> 
> >R at contesting.com;Measures wrote:
> >
> >> What kind of efficiency?  What DC supply V?
> >
> >60%, 60V.  Advanced Power Technology FETs.
> ><http://www.advancedpower.com/>
> >
> >-- 
> >73,
> >Vic, K2VCO
> >Fresno CA
> >http://www.qsl.net/k2vco
> >