[RFI] Noise on 75 Meters

[RFI Services' Michael Martin]

Dale is correct. This is a common symptom of HPS streetlight bulbs. If it
occurs 24/7 it also has a bad photocell. If only at night it's just the
bulb. Sometimes a bad photo cell causes the bulb to malfunction..

Michael C. Martin
RFI Services
6469 Old Solomons Island Rd
Tracys Landing, MD 20779
www.rfiservices.com
240-508-3760


-----Original Message-----
From: RFI [mailto:rfi-bounces at contesting.com] On Behalf Of dalej
Sent: Friday, December 28, 2012 12:25 PM
To: john at w9rpm.com
Cc: RFI
Subject: Re: [RFI] Noise on 75 Meters

Street light maybe.  If it is, it is more than likely within a block or two
or maybe three.  I've had them four to five blocks away and still strong
signal on 75, cycles on and off once or so per minute.  Look for streetlight
cycling on and off.  

Dale K9vuj


On 28, Dec 2012, at 10:57, W9RPM <john at w9rpm.com> wrote:

> Hi, About 2 weeks ago I started getting some terrible noise on 75 
> meters. It is constant, building up, then seems to discharge, but 
> never goes away. 20 over when it builds up. Then discharges. It 
> actually seem to move around a little. It will drop from 20 over to S7 
> on the scope, then I see it up or down from where it was. Repeats the 
> same all the time. Any ideas? Thanks, John W9RPM
> 
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