Hi, everyone.
In response to this thread, I'm re-sending something that I think I posted
to the list back in the Spring of 2014.
The following link appeared in the Wednesday: April 2 2014 edition of the
Handiham World Weekly E-letter.
The link helps you listen to, and hopefully identify common sources of RFI
that may be getting into your ham radio equipment:
http://www.arrl.org/sounds-of-rfi
The sound files are excellent and quite interesting!
P.S. As far as I know, it is not possible to send attachments on this list,
so maybe Eric can figure out another way to send those sound files to
illustrate what he is experiencing.
Tom Behler: KB8TYJ
-----Original Message-----
From: For blind ham radio operators [mailto:[log in to unmask]]
On Behalf Of Mike Keithley
Sent: Thursday, October 15, 2015 4:50 PM
To: [log in to unmask]
Subject: Re: I Think I Know What Ham Radio in Hell Sounds Like.
If you can send attachments on this list, those recordinds would be
appreciated.
----- Original Message -----
From: Eric Oyen <[log in to unmask]>
To: [log in to unmask]
Date: Thursday, October 15, 2015 1:34 pm
Subject: Re: I Think I Know What Ham Radio in Hell Sounds Like.
>
>
> grow lights are not the only noise maker. believe me, I have a
> plethora = of sources around my neighborhood. Firstly, the 12 Kv
> overhead power = lines. THose things buzz 24/7 and are particularly
> loud on 80 and 160. = That is not I can handle that with an MFJ-1025
> noise cancellation unit. = Its some of the others that I have
> difficulty with (like the plasma TV = my neighbor has, or the Tivo
> unit out in the front room that throws = spurs all over the spectrum
> from 14 Mhz all the way up into the 2 meter = band. I need to make
> some recordings of all these types of noises and = see what you all make
of them.
>
> DE n7zzt Eric
>
> On Oct 15, 2015, at 10:38 AM, Martin McCormick wrote:
>
> > I benge-read "QST's" and am all caught up including October.
> >=20
> > By the way, there are numerous references in those issues to the
> >blistering interference caused by non-type-excepted grow light
> >balists. I think that is what is tearing up radio reception around
> >here but I am not sure.
> >=20
> > I started noticing it a couple of years ago while listening to
> >Sporadic E television skip from Mexico and thought it was a
> >switching power supply of mine until I unplugged it and the BZZZZ
> >continued unchanged.
> >=20
> > This trash is pretty solid between the high end of ten meters and
> >roughly 70 MHZ. It is as if you had a 130-volt power sub station in
> >your back yard or had welders continuously working right under the
> >antenna.
> >=20
> > It goes and goes for hours then abruptly quits in both Winter and
> >Summer, day and night. It doesn't seem to follow any particular
> >pattern except a general one of being more common on work days. I
> >have heard it on for as few as 4 or 5 minutes but normally, it is
> >buzzing and crackling 24/7.
> >=20
> > The "QST" articles said that some of the dodgy balists emit 50 DB
> >more noise than they should and a single one can be heard for over
> >half a mile.
> >=20
> > Our house is two blocks South of the university campus and the
> >veterinary school is the closest large complex. I haven't gotten a
> >fix on the megabuzz yet but lots of folks around here grow plants of
> >both the legal and quite illegal variety. That buzzing sound could
> >be somebody's brain on drugs and they finally shorted it out. I wish
> >a thunder storm would hurry up and shorten it's life so one can hear
> >actual radio signals again.
> >=20
> > One of the articles I read said that when the light first comes
> >on, there is a burbling sound as the fluorescent tube first ionizes.
> >I hadn't heard that, but there is sometimes a brief burst of racket,
> >maybe a fifth of a second of relative quiet and then we're off and
> >running for who knows how long.
> >=20
> > The article said that some of the grow lights in question are a
> >kilowatt in power. I guess they could duplicate Marconi's
> >transatlantic test and this time, the spark is contained in the
> >glass tube.
> >=20
> > Martin
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