I just finished the KX1 kit and without the tuner, power output into a 50 ohm
load is about 10W on 80M, and 4W on 40M, 30M, and 20M using a Bird meter,
50W slug.
However the ATU which seems to work well in all testing, all the relays
click, etc., in TUNE the power starts out at a reading of about
Oh and the ATU is in the CAL (bypass) mode. Of course it is in the TUN mode
for the testing of inserting different L and C elements and noting SWR
changes to see that all the elements are working.
-
Chuck, KE9UW
--
View this message in context:
Chuck,
Look at the Low Pass Filter.
The PA transistor cannot really go to 10 watts output - I suspect the
relay on the LPF board is not being activated on 80 meters and is
allowing a low of 2nd and 3rd harmonic energy get through. A 'scope
would show that, but for some reason or another, that
] on
behalf of ke9uw [c-haw...@illinois.edu]
Sent: Monday, June 04, 2012 6:03 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KX1 ATU causes power to drop off...
Oh and the ATU is in the CAL (bypass) mode. Of course it is in the TUN mode
for the testing of inserting different L and C elements
, 2012 7:44 PM
To: hawley, charles j jr
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KX1 ATU causes power to drop off...
Chuck,
Look at the Low Pass Filter.
The PA transistor cannot really go to 10 watts output - I suspect the
relay on the LPF board is not being activated on 80 meters
Motorcycles BMWMOA #224
From: Don Wilhelm [w3...@embarqmail.com]
Sent: Monday, June 04, 2012 7:44 PM
To: hawley, charles j jr
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KX1 ATU causes power to drop off...
Chuck,
Look at the Low Pass Filter
jr
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KX1 ATU causes power to drop off...
Chuck,
That is progress, but for the life of me, I cannot think of any way the
KXAT1 would cause the power to gradually decrease. It is getting late
for me today, so I will sleep on it and see if anything
Chuck,
That LPF is the most common downfall of the KXB3080 installation. It is
small and quite compact, and does require a lot of careful work.
I am glad to hear your KX1 is now working OK.
73,
Don W3FPR
On 6/4/2012 10:48 PM, hawley, charles j jr wrote:
Fixed.
It was a solder connection on
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