[Elecraft] 100 Watts or 500 Watts

[Igor Kosvin]

Is there any technical merit behind FCC's 15dB amp gain limitation? I saw
commercial RF amplifiers with gains up to 30dB, obviously approved by FCC. I
could understand the limitation for tube amplifiers, the characteristics of
some amp tubes would make high gain unstable. But for solid state amplifiers
the limitation looks strange to say the least. Maybe it's time to ask FCC to
reconsider this. Any ARRL lawyers out there?
73,
Igor, N1YX 

-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Don Wilhelm
Sent: Monday, December 20, 2010 3:31 PM
To: able2fly at aol.com
Cc: elecraft at mailman.qth.net; don at w3fpr.com
Subject: Re: [Elecraft] 100 Watts or 500 Watts

  Bill,

It is not an Elecraft choice.
While you could do that as an individual, commercial products (sold in 
the US) must meet the FCC requirement of a 15 dB maximum gain   That 
limits the maximum power gain to a factor of 31.62 - 10 watts in gives 
316.2 watts (at the most) output.

73,
Don W3FPR

On 12/20/2010 3:23 PM, able2fly at aol.com wrote:
> Why wouldn't Elecraft design the KPA500 to be driven to its rated output
by a K3/10 ?
>
> Bill  K3UJ
>
>
>
>
>
>
> -----Original Message-----
> From: Don Wilhelm<w3fpr at embarqmail.com>
> Subject: Re: [Elecraft] 100 Watts or 500 Watts
>
>
>    Frank,
> If you think you want 500 watts out, you will have to install the KPA3
> 100 watts) anyway.  The K3/10 will not be able to drive the KPA500 to
> ull output - you may be able to get somewhere betwen 200 and 300 watts
> ut of it.
> 73,
> on W3FPR
>
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