[CQ-Contest] Interference help

Simon Brown (HB9DRV) simon at hb9drv.ch
Sat Sep 10 13:41:32 EDT 2005

Staggeringly stupid question - you do have isolation between radio and PC I 
assume? You haven't just connected the radio straight to the PC (because 
this can cause what you are seeing) ?

Simon Brown
www.hb9drv.ch www.laax.ch

RSGB HF Convention: Friday 7th - Sunday 9th October 2005
Holidays: Monday 10th - Thursday 20th October 2005

----- Original Message ----- 
From: "Art Searle" <w2nra at optonline.net>

> Hi Jacob,
> Have you tried turning off all of the breakers in your house except your
> shack to see if the problem is in your house or your shack.  If it's
> still there unplug all your equipment, including the computer and
> monitor, except the rig.  It should be gone then unless your power
> supply is to close to your rig.  If it is gone, plug in each piece of
> equipment until it comes back.
> 73 Art W2NRA
> Jacob W Tennant wrote:
>>I am trying to get rid of a 60Hz hum/growl I have on every band.
>>It starts at 60 Hz and then every 60Hz thereafter and it is killing any
>>chance of real contesting attempts I may try as on 20 meters it 
>>all but the strongest PSK-31 or RTTY signals plus is starting to give me a
>>headache when operating for long periods of time.
>>I have run grounding system for everything I can radio,tuner,power
>>supply,computer, even the the metal frame of my desk is grounded but it is
>>still there at around a S5 or greater level on 20 meters and lower on the
>>higher bands.
>>Jacob Tennant - K8JWT
> _______________________________________________
> CQ-Contest mailing list
> CQ-Contest at contesting.com
> http://lists.contesting.com/mailman/listinfo/cq-contest 

More information about the CQ-Contest mailing list