[Elecraft] RFI issues

[K9MA]

It's really important to make sure you're listening to the right source. 
One way to do that is to listen to the audio from your home receiver (AM 
mode, AGC off, RF gain backed down to avoid overload) while you are 
searching. There will be a pattern of fluctuations. When they match, you 
have the right source. You can relay the home receiver by phone, 
VHF/UHF, etc.

73,
Scott K9MA


On 2/20/2020 11:48, Phil Hystad via Elecraft wrote:
> I once had a noise issue and I used my KX3 roving about the neighborhood to find it.  Actually, I found a number of loud noise sources doing that as I moved around.  It seems that if the noise level is fairly constant as you move around the area but will within the same general distance from the TV/FM station antennas you could isolate the source as those antennas or something else.
>
> 73, phil, K7PEH
>
>
>> On Feb 20, 2020, at 9:42 AM, Jim Brown <jim at audiosystemsgroup.com> wrote:
>>
>> On 2/18/2020 4:38 PM, Andreas Wachter via Elecraft wrote:
>>> Yes, I did run the K3 off of a battery and pulled the main AC breaker. Didn’t make any difference. Thus my suspicion that the RFI is related to the 208 kW ERP TV station (and/or 63 kW EPR FM station) which are within 1.6 miles and in direct line of sight.
>> Do you have neighbors? Did you pull their breakers at the same time?
>>
>> Do you have a UPS? They continue to run without power, so both they and any connected equipment can create noise.
>>
>> Did you take the time to study the link I posted?
>>
>> 73, Jim K9YC
>> ______________________________________________________________
>

-- 
Scott  K9MA

k9ma at sdellington.us