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Re: [RFI] Source power pole located - but wonder which components most l

Subject: Re: [RFI] Source power pole located - but wonder which components most likely temperature sensitive
From: Michael Martin <mike@rfiservices.com>
Date: Mon, 29 Jan 2024 19:14:32 -0500
List-post: <mailto:rfi@contesting.com>
You're right David 50 years ago is right about the time I started doing
this job. I was taught at that time that the method of choice was to listen
to the radio and hit the pole with a sledgehammer. I repeat what A wise man
once said, it was an acceptable practice. I've been doing this job full
time for 45 years. Over 30 years ago I was standing under a pole in College
Park Maryland and thought it was a good idea to put a hard hat on as I hit
the pole with a hammer because people were watching me through a cafeteria
window. I thought I would look more professional. I hit the pole with a
sledgehammer and a galvanized steel j-hook hit me in the head. Luckily I
covered my head with a hard hat. It could have just as easily hit me in the
shoulder and ripped my shoulder apart but a galvanized steel lag falling
from 40 ft overhead has a lot of force. About that moment the light came
on! I vowed to never do that again. And I haven't. But I can tell you there
has been many times since then that things have fallen from a pole and
could have easily fallen on someone's head. Nowadays they call that line of
fire. Part of my practice is to teach people to do the work from beside the
pole and across the street and I do my best to get the point across. I
think the RFI reflector is a very good place to point this out because
unfortunately there are a lot of people that think it's okay to do that. If
I'm ever in your area I hope you attend a presentation I give to a radio
club or one of the ham conventions and you see the slides that I show of
what happens when people hit poles. No offense meant in your statement and
I'm glad to hear that it was 50 years ago. Not everything we do nowadays is
not as good as it was back then. Be safe

Michael Martin
RFI Services
51 W Bay Front Rd
Lothian, MD 20711

240-508-3760
mike@rfiservices.com
www.rfiservices.com

On Mon, Jan 29, 2024, 7:04 PM David Eckhardt <davearea51a@gmail.com> wrote:

> Well, it was sme 50 years ago.  So be it.........
>
> Dave - WØLEV
>
> On Mon, Jan 29, 2024 at 11:23 PM Steve London <n2icarrl@gmail.com> wrote:
>
> > "Believe me, it's
> > an accepted practice."
> >
> > No, it is not "an accepted practice". You are not to be believed. It is a
> > dangerous practice.
> >
> > 73,
> > Steve, N2IC
> >
> > On Mon, Jan 29, 2024 at 2:32 PM David Eckhardt <davearea51a@gmail.com>
> > wrote:
> >
> >> A standard procedure for physically exciting loose connections up top a
> >> power pole:  Take a big sledge hammer and beat on the pole from the
> bottom
> >> while monitoring for RFI.  It looks brutile, but works if your hammer is
> >> massive enough and you have a gorilla swing the hammer.  Believe me,
> it's
> >> an accepted practice.
> >>
> >> Dave - WØLEV
> >>
> >> On Mon, Jan 29, 2024 at 8:04 PM K9MA <k9ma@sdellington.us> wrote:
> >>
> >> > On 1/29/2024 12:47 PM, David Eckhardt wrote:
> >> >
> >> > QUOTE:  It may not even be a failed component, as any two pieces of
> >> poorly
> >> > bonded hardware can produce noise. That could explain the temperature
> >> > dependence. In any case, have them check all the hardware on that
> pole.
> >> >
> >> > An almost giveaway symptom  for this type of failure is erratic
> behavior
> >> > of the RFI in a good gusty wind.
> >> >
> >> > True. It is possible to simulate that gusty wind, but power companies
> >> > frown on that.
> >> >
> >> > 73,
> >> >
> >> > Scott K9MA
> >> >
> >> > --
> >> > Scott  K9MA
> >> > k9ma@sdellington.us
> >> >
> >> >
> >>
> >> --
> >>
> >> *Dave - WØLEV*
> >> _______________________________________________
> >> RFI mailing list
> >> RFI@contesting.com
> >> http://lists.contesting.com/mailman/listinfo/rfi
> >>
> >
>
> --
>
> *Dave - WØLEV*
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