[Amps] How about a Solid State MARS amp

kg7hf at comcast.net kg7hf at comcast.net
Fri Oct 12 07:18:57 EDT 2007


Hi Chas,

Even removing the 160 meter requirement, it would make the ss easier, but still the $1/w unattainable in either ss or tube.  Like Tom said, the filter board is really going to add up in price.  Not only are the caps expensive (especially for one off construction), you have to have pretty beefy relays to switch in/out each desired filter.  I've been referenceing the TL-2.5k, and part of the reason is that I am somewhat familiar with what is inside it.  Nobuki Wakabayashi was very kind and helpful towards me when I embarked on a legal limit ss amp.  My amp is not complete, and I am into it well over $2000.  While it is operational, there are many necessary things that I have not put in which the commercial version has.  Thermal protection, high/short swr protection, automatic band switching, the list goes on.  On the converse side, I am running a bit better power supply than thp, I'm using a switching power supply that has a bit more voltage/current capability.   

73's
Paul
-------------- Original message -------------- 
From: schuetzen <chasm at texas.net> 

> Tom Rauch wrote: 
> > That aside, any of the solid state amps will transmit 
> > anywhere. 
> > 
> > The problem with tube amps is mainly the plate choke and 
> > switch ratings, and the fact the amps MUST have 160 meters 
> > or sales will be dead. 
> > 73 Tom 
> 
> 
> actually, if we could just get this thing to work 3.2 to 28mhz, we would 
> be in great shape. would that make it any easier?? to make a legal 
> limit Solid state or tube amp? 
> 
> thanks 
> chas k5dam 


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