For those who would like to go the attenuator route to allow the 100 W PA to
drive their amp at medium power, Phil Salas, AD5X, defined the parts for a
nice 2 dB attenuator in:
Aug 2010 - QST (Pg. 39)
Simplify Transceiver to Amplifier Interfacing with an In-Line Attenuator
Regards, Joel Hallas,
With the KPA3A / 100 watt amp active, which switches in at 12 watts, the
LPA then runs about 1 to 5 watts. The issue I encountered was running
the KPA3A / 100 watt amp, at the lower end of the power range being 15
or so watts. I encountered two failures of the KPA3A amp module.
I now stay
Oh I just reread your post. My mistake. So running low power on the KPA is also
problematic?
Chuck Jack Hawley
KE9UW
Sent from my iPhone, cjack
> On Nov 21, 2019, at 10:32 PM, Bob McGraw K4TAX wrote:
>
> I learned my lesson running 12 to 15 watts or so having to replace the KPA3A
> twice.
I thought the answer was to run the KPA by going up to 12 or 15 watts. What is
the LPA running when when the power is at 12 or 15 watts? What is it running
when the power is at 20 or 25 watts?
Chuck Jack Hawley
KE9UW
Sent from my iPhone, cjack
> On Nov 21, 2019, at 10:32 PM, Bob McGraw
4 matches
Mail list logo
