[Elecraft] K3 144mhz power - 10 watts not a problem

Erik N Basilier ebasilier at cox.net
Sun May 17 11:41:57 EDT 2009


Exactly. On 144 the weak signals are so weak that TX cleanness as well as RX 
dynamic range become a very difficult problems. You want a minimum number of 
TX stages to mess up the signal, and minimum phase noise. Most solid state 
amp's that might be available in the shack may not be clean enough to drive 
the big one. Hmmm.... years ago I was looking at a 144 legal limit amp 
project described in the 1988 ARRL Handbook. It uses a tetrode and produces 
full output with just 10W in. That one is now back on my list of dreams....

73,
Erik K7TV

----- Original Message ----- 
From: "Mike Harris" <mike.harris at horizon.co.fk>
To: "Elecraft Reflector" <elecraft at mailman.qth.net>
Sent: Sunday, May 17, 2009 8:26 AM
Subject: Re: [Elecraft] K3 144mhz power - 10 watts not a problem


> Cascading IPs maybe if you're running an intermediate amp to drive the big
> one.
>
> Regards,
>
> Mike VP8NO
>
> ----- Original Message ----- 
> From: "Jim Miller KG0KP" <JimMiller at STL-OnLine.Net>
> To: "Elecraft Reflector" <elecraft at mailman.qth.net>
> Sent: Sunday, May 17, 2009 12:33 AM
> Subject: Re: [Elecraft] K3 144mhz power - 10 watts not a problem
>
>
> |I don't see 10 watts as a problem.  How many 2 meter amps do you have on
> the




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