I noticed a severe hum (60cycle) hum in the K2  after testing a Heath  hw101 
.   it appeared that i had damaged the front end of the K2 ,and  after some 
alarm and checking all things i discovered that i had moved a Small  Alarm 
Clock 
120vac near the K2 and it was causing all the problem . I have  heard about 
similar problems with Power Supplies near the rig but this is a new  one ! It 
sure caused me some grief for awhile (hi)
 
 So keep all ac coils , Xmfrs, clocks ,etc away from the K2 !
 
 
 
 
 
 
 
 
       72,73, Jerry K9UT #1273
 
 
 
 
 
 
 
      
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