On Sat,3/19/2016 3:42 PM, Phil Kane wrote:
"Low voltage" meant that the insulators were less than a meter long.:)
It has a very different meaning in the wiring of buildings. Low voltage
is less than 25V RMS or less than 25VDC, and has less stringent
requirements for protection by being
When arcing, they are generally visible (at night) and the arc noise can
be heard when standing near the line(s) in question. That gives you the
ability to locate the fire hazard.
Local fire departments have been known to take a very dim view of fire
hazards - and they have amazing power to
On 3/15/2016 2:05 PM, Fred Jensen wrote:
> Count the "fins" on the insulators to estimate the voltage. 69-70 KV
> are often on large umbrella type or short hanging ones. The 112 KV were
> hanging from ones with about 6 sections. 230 KV usually have 12-14
> sections. 500 KV [and DC interties]
I have a 300KV distribution line about 0.5 miles from my QTH, and have not had
any significant issues. About every month or two I walk along two miles of the
power line with my KX3 checking for increased noise on various bands that I
normally use. Only once in eight years did I hear anything
Always be ready to play the "public utilities commission" card.
On 3/16/2016 9:11 AM, Jim Brown wrote:
Another local ham who is an attorney found that contacting the state
agency regulating PGE got his problems fixed when PG had previously
failed to do so.
m>; <kengk...@gmail.com>; <n...@sonic.net>; <
> k6...@foothill.net>
> Sent: Wednesday, March 16, 2016 1:27 PM
> Subject: Re: [Elecraft] OT: K3 and High Tension Wires
>
>
> Lewis,
>> I would have to respectfully disagree with a major portion of your
>>
On Wed,3/16/2016 6:27 AM, Dave Olean wrote:
If the RF interference is caused by power line arcing, it’s going to
get detected and fixed pretty quickly by the utility. If it’s there
all the time, it very likely isn’t the power company at fault.
Here in Northern California where PG is our power
On Wed,3/16/2016 9:08 AM, Scott Ellington wrote:
The arcing that causes RFI is usually not from the power lines
themselves, but various pieces of poorly bonded hardware NEAR the
power lines.
Right. But most engineers would view the lines and that hardware as a
"power distribution system,"
Yes, and buried in there is the reason why it is so hard to get the
power company's attention for distribution line noise [12-14 KV] ... the
loss to them is minuscule compared to other costs.
With no disparagement of power linemen intended, distribution is almost
universally on wood poles if
The arcing that causes RFI is usually not from the power lines
themselves, but various pieces of poorly bonded hardware NEAR the power
lines.
73,
Scott K9MA
On 3/16/2016 09:18, Wes (N7WS) wrote:
He did say that he was head of the PR department.
On 3/15/2016 8:58 PM, Jim Brown wrote:
He did say that he was head of the PR department.
On 3/15/2016 8:58 PM, Jim Brown wrote:
Lew,
That's in direct conflict with everything I've seen from RFI engineers. Over
the years, I've seen plenty of reports of hardware in the power system failing
in a mode that causes it to arc. See
Lots of good info, but due to the large number of posts, let's end this thread
now in the interest of lowering list overload for others.
73, Eric
Eric
/Modulator - //elecraft.com/
On 3/16/2016 10:27 AM, Ken G Kopp wrote:
Well said, Dave. Unlike another poster, you appear to have an
Please reread the first sentence of my prior post, in which I qualified what I
said with the phrase “…if it’s functioning properly.” What I said is NOT in
conflict with your points. Power line noise is, de facto, the result of some
sort of equipment failure. We agree on that. If something is
The Loftness book is the "go to" text on power line noise.
EVERY metal-to-metal junction is suspect. Lazy linemen hammer lag bolts
straight in when installing cross arm braces. Metal steeples holding
ground wire running down a pole arc and set poles on fire. The list is
endless.
73
K0PP
Lew,
That's in direct conflict with everything I've seen from RFI engineers.
Over the years, I've seen plenty of reports of hardware in the power
system failing in a mode that causes it to arc. See
http://www.arrl.org/power-line-noise for a great discussion of all sorts
of RF noise,
Drawing from a decade of experience working as head of the PR department for a
major electric utility (a long time ago), I’d like to suggest that arcing per
se should not be a problem at any time with any power line if it is functioning
properly. The individual transmission wires are spaced far
Others might be interested ...
We moved here to Sparks NV last Aug. Prior, we lived on 5 rural ac
outside of Auburn CA for 38 years. Distribution lines were 12 KV, we
had our own pole pig. There was a 69 KV tie line on wood poles between
two hydro plants that cut across the south corner.
3/15/2016 15:17 (GMT-05:00) To: "<elecraft@mailman.qth.net>"
<Elecraft@mailman.qth.net> Subject: [Elecraft] OT: K3 and High Tension Wires
Greetings all.
We are considering moving to a location that is more friendly to ham radio
and especially the performance of
Greetings all.
We are considering moving to a location that is more friendly to ham radio
and especially the performance of my K3. Here in our crowded neighborhood,
I have regular S7 noise levels on all the lower HF bands. One home we
found (and like) sits fairly close to high tension wires (ie
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