[Elecraft] K3: 630m amplifiers

[Edward R Cole]

To catch up on the comments I address all that I have so far:

Re: linear vs class-C is really a moot point as its easy enough to 
build a linear at 500-KHz.  CW, JT65, FSK all do fine with class-C, 
of course.  And its true that any modulation of a continuous carrier 
will impart some bandwidth.  Its not likely that wide-band digital 
modes will be approved in a band that is only 7-KHz wide so probably 
those approved would work with a class-C amp.  I think its just 
simpler to provide class-AB then its a non-issue.

Re: 15-dB HF linear amp gain limit.  If that is applied to 630m amps 
then either I sell a kit or partial kit.
1mw in to 1w out is 30-dB and 100w out is 50-dB.  I would have to 
research the regs to see if the limit is for a certain level of input 
(like 5w).  Also the regs allow hams to sell amps to other hams 
without this restriction (but at what quantity per year?).

First off I am not proposing to go into competition with MFJ.  This 
is just a home business building one at a time.  If the FCC is going 
to make this a small (tiny) business killer than its just not worth 
the bother. If I say more than this it will get political and that is OT.

73, Ed - KL7UW
http://www.kl7uw.com
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