[Elecraft] K2 - low power/reception on 80m

[Don Wilhelm]

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+)
>
>