[Elecraft] [KX3] 2M module XVTR amp

[Edward R Cole]

Chris,

Where did you get the idea that the KX3 2M module output 1mw?  Wayne 
has repeatedly stated they expect something between 3 to 5w 
output.  I know nothing about the Flex6700 (does it run with 1mw 
output?).  Most of the RF modules used in radios require something 
like 20mw (+13 dBm) drive.  http://www.rfparts.com/ra13h1317m.html

One can make a nice 10-13w amplifier using a mmic driver into a 
choice of several RF modules.  Only RF design would be the LP filter 
on the high level output.  I used a MAV-11 with 50mw output to drive 
a ($33 from RF Parts) RA13H1317M module to 13w output.  These mmic's 
and RF modules require no tuned circuits so little engineering to 
their circuitry.  Just deliver the proper drive and dc voltages with 
power leads RF decoupled using bypass caps and regulated dc voltage.

Really simple circuitry.

73, Ed - KL7UW

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Since we have some time to wait,  I was wondering if I could get some 
advice on any available amps that could be used to boost the 1mW 
projected output of the KX3's upcoming 2M module to higher power 
levels.   I could use this on my Flex 6700 2M radio as well.   Either 
something to drive a larger amp, so between 1 and 5 watts, or even 
more.   Does anyone have any good recommendations?

Chris
K6OZY

73, Ed - KL7UW
http://www.kl7uw.com
dubususa at gmail.com
"Kits made by KL7UW"