[Elecraft] KX2 Low Power

2020-12-19 Thread Frederick Dwight
The first thing I would check is what voltage (under TX load) is actually 
reaching the KX2.
Check this in the menu and also right near where the power enters the KX2.  
Full power is only possible
With a good “stiff” power supply.  If you use the internal battery pack, the 
power will drop off, perhaps
around what you get, after a little use, but then you can operate for some 
hours at QRP power levels.
If you run the KX2 with a good AC power supply which puts out hopefully at 
least 13 volts, you should
get the full specified power.  Even something like a 12 volt gel cell, will 
soon drop down below 12 volts and
may or may not support full power.  If you have small wires between an external 
supply and an in line fuse
this could be a slight possibility.  Check the above things out first since it 
is an easy step.  If you are 
measuring the power output with an inline SWR/wattmeter into an antenna without 
perfect 50 ohm
SWR of 1:1 the power reading from it could easily be off by 50 %.  Good Luck,
   Rick KL7CW  KX1, KX2,K3S,  etc.

Sent from Mail for Windows 10

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[Elecraft] kx2 low power

2020-12-19 Thread Paul Nix via Elecraft

Hello Barrie;

( I do not have product specific information on the KX2. )

A few comments/questions :

- Did the person selling the KX2 make any representations
  as to the radio's condition ?

- Do you know why the KX2 needed to have new finals ?
  Did the radio just suddenly cease transmitting or was
  there an associated event (static discharge, over-heating,
  etc) ?

- After the finals were replaced were any measurements
  made to confirm that the KX2 was working properly on
  all the bands with the new parts installed ?

- Are your measurements being made into a known
  good dummy load and with a good power supply ?

- Have you browsed through the owner's manual so that
  you have a general idea what the various calibration
  procedures accomplish ? I'm not suggesting that you
  try to perform any of the procedures but rather are you
  familiar with them to the extent that you have an
  awareness of what they are ?

Regards;

Paul, WB5AGF

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[Elecraft] kx2 low power

2020-12-18 Thread barrie downward
Hi thanks for letting me join the group, I have just bought a kx2, and love
it, one problem is low output power, On 40mtrs 7watts and on 10mtrs only
4watts, i was told by the person i bought it off, it had just had new
finals  fitted, i downloaded the latest hardware, any help please. Barrie
Downward vk2qg.
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