[Elecraft] : KAT100 failure

[Don Wilhelm]

Jean,

If you have measured the antenna with your antenna analyzer, it should 
be OK.
First check diodes D1 and D2 in the KAT100.

If those are good, then turn to page 28 in the KAT100 manual and do the 
SWR Bridge Null adjustment and the Power Calibration (page 29)

If you still have problems, turn to page 35 in the manual and do the 
procedures as described in "Testing Relays, Inductors, and Capacitors".

73,
Don W3FPR


On 9/8/2016 5:19 AM, Behiels jean-Pierre wrote:
>
> Hi K2 members and Don W3FPR.
>
> Last night I do have next failure.
>
> I was transmitting with 50 W in CW with my K2/100 with in conjunction 
> with my  KAT100 into a perfect aligned 7 Mhz dipole (SWR1/1)
>
> Before starting I always do a tune with my K2 we never no the SWR is 
> bad hi.
>
> The SWR indication on the KAT100 was outstanding 1/1,what I suspect 
> because I now the SWR of my antenne already was 1/1 !
>
> After transmitting a while (5 minutes or so) the KAT100 SWR indication 
> was in the red zone,I stop transmitting immediately.
>
> My RX level was dropping down to a zero level,propably a interruption 
> in the ANT1 connection of my KAT100.
>
> I do change by means of the K2 command on the frontpanel to ANT2 
> connection and back to ANT1 connection.
>
> Nothing happens to help the failure yet,same failure no RX on ANT1 
> connection ?
>
> I do disconnect the KAT 100 unit and remove the power supply of the K2 
> and his KAT 100.
>
> After all (toggling with the relays ???) I can receive again on both 
> ANT1 and 2 but I do have the correct impression that the receive level
>
> on the ANT1 connection has been attenuated since I do hat this failure 
> last night !!!!!
>
>