[Elecraft] QRO

[Ed Lambert]

For me it is the cost of the tube ~$600, the enclosures (I was planning to
purchase new) ~$300 -$400, power supply transformer ~$500 - $600, power
supply capacitor ~$400 -$500, vacuum variable capacitors several hundred
dollars, etc.

I was planning to purchase all new; considerable savings by looking around.
I wanted to go first class, but maybe won't be able to do it. My total cost
for all new stuff would be several (4 or 5) thousands of dollars. And since
I was going to revise the handbook design, there would be no assurance of
total success.

Ed Lambert, KD3Y

> 
> I'm curious, what makes RF amplifiers fairly expensive projects? I
> admit I have no experience or exposure to them, but as far as I can
> tell the two major building blocks are a power supply and a not
> terribly complex amplifier circuit.
> 
> Is the bulk of the cost in the amp device(s) - power transistors or
> vacuum tubes/values?
> 
> Thanks.
> 
> -Michael
>  VE3TIX
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