[RFI] Utility coming tomorrow to chase RFI

[qrv at kd4e.com]

Yes re. AM, got that piece, now looking for an affordable used
handheld that gets me that on VHF & preferably also UHF.

BTW: It is bizarre that the HF noise is directionally-obvious.
As I walk toward two poles it gets louder - when I back away
it gets weaker - when I do the same with other poles the same
does not happen.

I do observe some coupling of the radio to the pole - using
the pole as a passive-repeater for AM-BC signals but I don't
observe the same on HF/SW.

Fascinating ...

David KD4E

> David, you must use a receiver in AM mode.  FM will not detect noise
> which is mostly amplitude modulated.  If you have a 10 meter HF yagi
> see if you can get a rough heading on the noise using that antenna,
> six meters would be better yet.  Remember noise is amplitude
> modulated NOT frequency modulated, so you need to listen in AM Or
> SSB.  An air band receiver works quite well anything cheap will do
> for close in and it's in the 120 Mhz plus range which is better yet.
> The higher in frequency you go the closer you'll have to be to the
> noise.  126 or so Mhz will work fine and get you in the ball park.
>
> I have a Icom IC-T7H which does do air band along with 144 meter and
> 440.  The Alinco DJ-G7 also does air band.  I believe Kenwood has
> some too.
>
> GL Dale, k9vuj
>
>
>
> On 03, Jun 2014, at 11:48, qrv at kd4e.com wrote:
>
>> I have forwarded everyone's comments to them - they really want to
>> learn - in fact he had been on the ARRL site reading-up!
>>
>> Thanks for the good ideas.
>>
>> I just discovered that my cheap Chinese HT (Baofeng UV-82) does not
>> do Air band AM, sigh.
>>
>> I tried opening-up the squelch & walking around but FM isn't the
>> correct mode for this.
>>
>> What are the recommended Ham handhelds that have VHF (and
>> preferably UHF) AM?
>>
>> Perhaps one that also has AM on HF so it's all in one package?
>>
>> (If HF on the handheld drives up the cost, or compromises
>> RFI-sensing features e.g. AM on VHF &/or UHF, I can always still
>> use my pocket AM-FM-SW receiver for the MW/SW sensing.)
>>
>> Thanks - David KD4E



-- 

David Colburn, KD4E - Nevils, Georgia USA

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