Phillippe,
There are several things that could be wrong.
First determine if it is a problem with the base K2 or the KPA100. To
accomplish that, you will have to physically remove the KPA100, unplug
the 4 cables and power the base K2 from the 2.1mm coaxial power jack on
the lower rear panel.
It could be the 80 meter Low pass Filter - either in the base K2 or the
KPA100 - badly tinned toroid leads are a common cause. It is also
possible that the LPF relay or the BPF relay for 80 meters is not
working properly - look at K3 and K8 in the base K2 and K11 and K12 in
the KPA100. If the relay case has been damaged, replace it.
73,
Don W3FPR
On 9/29/2016 3:31 AM, Philippe wrote:
Hi,
I bought an used K2/100 with an issue on 80m:
- RF is low (less than 1 watt) even when PWR set to 100W
- reception sensibility is low as well, I need to switch the PRE to hear
something on the band.
- all other bands are doing fine (good sensibility, 100W+)
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