[Elecraft] K1 Revisions & Updates to K1-4

[Don Wilhelm]

Mike,

You have already received information on the level of that K1, and I 
would not see any need to upgrade the KAT1 firmware.

The maximum power output on 20 meters may be limited due to several 
reasons, but the 5 watts does meet specifications.  If the actual power 
output matches the OUT menu parameter when set to 5 watts or below, the 
power control is working.
It is possible that the 22 MHz crystal on the 4 band board is a bit 
weak, or you may be able to obtain greater output by aligning the 
bandpass filters on the 2 band board.

73,
Don W3FPR

On 12/11/2013 12:34 PM, Mike - NZ1MT wrote:
> Hi all,
>
> I'm the proud owner of a K1-4  #1066 that appears to be working very well. Based on the K1 RF main board, KFL1-4, and KAT1 versions listed below I was wondering what other eprom revision updates and changes are available that I should implementing.
>
>
> K1 RF 2000 Rev D - MCU 1.09e
> KFL1-4 Rev B 1.00 (blue trimmers)
>
> KAT1 Rev C 1.20
> The K1 power output is showing a solid 5W to a dummy load when OUT is set at P7.0. Not sure if the output could be increased or if the KAT1 power measurement should just be re-calibrated.
>
>