>X-Sender: n7cix@doitnow.com
To: <towertalk@contesting.com>
>Date: Tue, 21 Jan 1997 16:41:27 -0700
>To: wa2moe@doitnow.com
>From: "Monty D. Rodgers" <n7cix@doitnow.com>
>Subject: Re: POWERLINE NOISE
>
>Hi Ron, Sorry to hear about your noise. I HAD a problem with power lines
>for SIX (6) years and just last summber I finally found the problem. I
>live almost under 230KV lines and had a spuratic noise that came at all
>different intervals and times. To make a long story short, the problem
>here was a Ringo Ranger II on top of my mast. I was at a point of taking
>down my whole station (tower and ant.) and was doing just that. Of course
>the first thing removed the Ringo and low and behold one of my ground
>crew yeld up at me, "I think we found it"!! Living so close to the high
>power lines I am in the magnetic field and the "hair pin" on the upper
>part of the ringo, where the first section and second section are held
>together with neoprime (plastic) and a screw through this making contact
>with the "hairpin" is where the noise was being generated! I took down
>the Ringo and installed a Diamnond and the noise has not returned since!!
>The Power Co. let me use their "RFI Finder" a peice of gear that would
>tune from 30 to 800 mhz. I found using 800 mhz and using the yagi ant.
>that they had, I could point at the top of my tower (using the beam like
>a rifle site) and peak the s-meter on the RFI Finder. All other methods
>were tried for years and never cud pinpoint the problem until they let
>me play with the equipment for a couple of weeks. Now I don't have the
>20db over S9 anymore! What a relief that was. Hope this helps 73/DX
>
>>>I HAVE A PROBLEM WHICH I AM SURE MANY OF YOU HAVE ENCOUNTERED. OUR POWER
>>>COMPANY RUNS 14,400 VOLTS ON THE MAINS. NEEDLESS TO SAY POWERLINE NOISE IS
>>>UNBELIEVABLE IN THE EARLY MORNING AND LATER IN THE EVENING. THE POWER
>>>COMPANY IS DILIGENT IN ATTEMPTING TO ELIMINATE THE PROBLEM HOWEVER IT IS
>>>PRETTY MUCH A HIT OR MISS SITUATION BECAUSE THEY CANNOT PINPOINT THE
>>>OFFENDING PIECE OF EQUIPMENT. THE LINES ARE ABOUT 200 YARDS NORTH OF MY QTH
>>>RUNNING ALONG THE STATE HIGHWAY. THE POLES ARE APPROXIMATELY FIFTY FOOTERS
>>>WITH TWO PAIRS OF THREE PHASES(THAT IS TO SAY THREE PHASES ON EACH SIDE OF
>>>THE POLE) ON BELL TYPE INSULATORS MOUNTED ON STANDOFFS. THIS SET OF MAINS
>>>IS LESSTHAN TWO YEARS OLD AND THE PROBLEMS SHOWED UP SHORTLY AFTER THEY WERE
>>>INSTALLED. THERE IS A 14,400 VOLT FEEDER RUNNING DOWN THE STREET ALONGSIDE
>>>MY STATION APPROXIMATELY 50 YARDS TO THE WEST WITH NO NOTICABLE NOISE BEING
>>>GENERATED THERE. THIS NOISE COVERS THE ENTIRE HF SPECTRUM FROM 500Khz TO
>>>30Mhz. .
>>>
>>>MY QUESTIONS ARE:
>>>
>>>1. HAS ANYBODY HAD THE SAME PROBLEM ? NO JOKE
>>>
>>>2. HOW DID YOU RESOLVE IT ?
>>>
>>>3: WHAT TYPE OF EQUIPMENT DID THE POWER COMPANY USE TO DETERMINE WHAT PIECE
>>>OF EQUIPMENT WAS CAUSING THE PROBLEM?
>>>
>>>4. ONCE THE PROBLEM WAS CORRECTED HOW LONG DID THE REPAIRS LAST ?
>>>
>>>I AM IN FLORIDA 20 MILES NORTHEAST OF TAMPA IN A MOSTLY RURAL AREA. OUR
>>>POWER COMPANY IS A COOPERATIVE AND THEY DO TRY THEIR BEST HOWEVER THEY (AND
>>>I) NEED HELP. ANY SUGGESTIONS OR SOLID ANSWERS MUCH APPRECIATED. THANKS A
>>>BUNCH RON KK4CR
>>>
>>>
>>>
>>>--
>>>FAQ on WWW: http://www.contesting.com/towertalkfaq.html
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>>>Administrative requests: towertalk-REQUEST@contesting.com
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>>>
>>>
>> Stu Greene WA2MOE
>> 7537 North 28th Avenue
>> Phoenix, Arizona 85051 USA
>>
>> wa2moe@doitnow.com
>>
>>
>>
> Monty. D. Rodgers N7CIX
> 18448 N. 31st Av.
> Phoenix, AZ 85023
> n7cix@doitnow.com
>
>
>
Stu Greene WA2MOE
7537 North 28th Avenue
Phoenix, Arizona 85051 USA
wa2moe@doitnow.com
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