[TenTec] ? Electric fence noise

Tue May 4 12:22:01 EDT 2021

I done all what has bend suggested I know that it is the fence this has bend going on for 2 years my s meter goes from s3 to 5 over

Sent from Mail for Windows 10

From: Bob McGraw
Sent: Tuesday, May 4, 2021 11:31 AM
To: tentec at contesting.com
Subject: Re: [TenTec] ? Electric fence noise

Start first by using a 12 volt battery, like the one on your lawn or 
garden tractor.  Connect your radio direct to the battery. Note the S 
meter reading for the given band and frequency.    Then drop or turn off 
the main breaker to the house.  And again note the S meter reading as 
before.  If the noise drops, it is inside your house  and now the 
detective work begins.  Turn off all of the individual breakers, turn 
the main breaker back on.   Again observe the noise.  If it comes up, 
the noise is outside.  If not then flip on one breaker at a time and 
observe noise level or change.   You'll likely find one or two that 
contribute to an increase in noise.  Now you have a clue where to look 
inside the house.

If the noise is determined to be outside of the house, then the 
detective work begins.  Use one of the commercial noise receivers with a 
loop or yagi antenna.  You will be able to identify the noise source and 
pinpoint its location by a little triangulation. A local map, ruler and 
pencil will be of great assistance.    Once done, then you are prepared 
to approach the offending location or company.

Don't go banging power poles!!!.  One ham did such, it shook the above 
transformer loose and it fell.   He suddenly became very short as the 
300 lb transformer pounded him into the ground.   The power company 
replaced the transformer and and undertaker took care of the remains.

73

Bob, K4TAX

On 5/4/2021 10:15 AM, Byron Cordes via TenTec wrote:
> My first rule ( No Wall Warts !!! )
> Next no battery chargers anywhere close to shack
> And my big rule if must have Led lights leave them off Hihi
>   73s Byron AC9PA
>
> On May 4, 2021, at 9:54 AM, Rod Greene via TenTec <tentec at contesting.com> wrote:
>
> I agree with Carter. I’ve tracked down many noisy electric fence problems. 99 pct are due to bad connections and often with  the spring loaded gate handles. They loosen up over time and an arc is caused at that point. Easy to find with a portable AM radio. GL, Rod/w7zrc
>
>
> Sent from Yahoo Mail for iPhone
>
>
> On Tuesday, May 4, 2021, 8:16 AM, Reed Krenn <reed.krenn at gmail.com> wrote:
>
> Are you absolutely sure the fence is the culprit? I ask because I had a
> similar trouble with a strong pulse, at about a 1Hz rate, appearing in my
> receiver on 40M. I and a friend went searching with a VHF AM receiver, and
> found an electric fence around a pasture, about half a mile due west of me.
> The fence was emitting 1Hz pulses that varied in amplitude along the length
> of the side parallel to my 40M dipole. I contacted the owner, and he agreed
> that the fence was due for some repairs, and that if I could be patient, he
> would get to it over the next few months. Several months went by with no
> improvement, and I was about to revisit the owner, when I decided to
> rearrange a few things in my shack. I was under my desk, tidying up some
> cables, and I unplugged a wall wart power supply that was attached to a USB
> hub. My receiver was on 40M at the time, and the pulse noise went away. I
> plugged it back in, and the noise returned.
>
> That wall wart, a switching supply, met a gruesome fate.
>
> Naturally, I called the owner of the fence and apologized profusely. He was
> very gracious, and was actually glad that I had inspired him to do some
> much needed repairs.
>
> Moral of the story: Make absolutely sure your own house is in order before
> casting about for external causes.
>
> Reed / WW3A
>
> On Tue, May 4, 2021 at 9:55 AM CARTER GRABARCZYK <k8vt at ameritech.net> wrote:
>
>>    I chased RFI for a living at AT&T. It seems you are looking at this issue
>> from the wrong side. In my experience, most cases of electric fence noise
>> was caused by defective insulators or corroded connections and thus the
>> responsibility of the fence owner to repair. Most were cooperative as it
>> was probably noising up their radio, TV and phone service.
>>
>> For those that did not cooperate, it was pointed out that they were
>> violating Part 15 of the FCC rules and may ultimately have to deal with the
>> FCC.
>> Just my 2 cents...
>> Carter  K8VT
>>
>>      On Monday, May 3, 2021, 10:11:13 PM EDT, Rodney Dewald via TenTec <
>> tentec at contesting.com> wrote:
>>
>>    WHERE DID YOU PUT THE CHOKE      I HAVE LATTER LINE TO A 4TO 1 BALEM
>>
>> Sent from Mail for Windows 10
>>
>> From: Ralph Matheny
>> Sent: Monday, May 3, 2021 9:14 PM
>> To: ah7i at gatech.edu; Discussion of Ten-Tec Equipment
>> Subject: Re: [TenTec] ? Electric fence noise
>>
>> I use electric fence here to keep deer out
>> of my tomato patch.  To keep the fence out of
>> the radio I have a choke...3 turns well insulated
>> wire on a good sized #31 toroid, and I can't tell
>> the thing is on or off with the radio.
>>
>> Your results may vary...every fence and charge will
>> probably be different.
>>
>> de K8RYU
>>
>>
>>
>>
>> ________________________________
>> From: TenTec <tentec-bounces+mathenyr=marietta.edu at contesting.com> on
>> behalf of Bob D. <ajamas.rn at gmail.com>
>> Sent: Monday, May 3, 2021 6:35 PM
>> To: Discussion of Ten-Tec Equipment <tentec at contesting.com>
>> Subject: ? [TenTec] Electric fence noise
>>
>> *** CAUTION: This email is not from Marietta College. Do not click on
>> links or open attachments unless you recognize the sender and trust the
>> content is safe. ***
>>
>>
>> An electric fence charger may be modified for a longer rise time. Like
>> softening keying to eliminate clicks.
>> 73, -Bob ah7i em73ts
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