OT: K3 and High Tension Wires

[Phil Kane-2]

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] have too many to count.

My wife spent a good part of her working career as an engineering
designer for industrial power and instrumentation projects including
generating and transmission substations.  "Low voltage" meant that the
insulators were less than a meter long.  :)
-- --

73 de K2ASP - Phil Kane
Elecraft K2/100   s/n 5402

From a Clearing in the Silicon Forest
Beaverton (Washington County) Oregon
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[Bill-3]

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 force the power companies to
remove any and all fire hazards.

I know this from experience - it does work. Perhaps the same method
would work in other circumstances also.

Bill W2BLC K-Line


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[Jim Brown-10]

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 installed in raceways (conduit,
cable tray, etc.)  Most audio, video, RF, and control circuits in
buildings carry low voltage. And that's why 24V is used for "low voltage
lighting."

Our Chicago SBE chapter toured the Argonne National Accelerator Lab SW
of Chicago about 15-20 years ago.When the engineering crew talked about
the hundreds of power amplifiers running "a gallon" to referred to the
hundreds of Megawatt power amplifiers that powered the accelerator.  
They told us the operating frequencies, and in the parking lot outside
the building, you couldn't hear a peep from them!

73, Jim K9YC

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[Doug Turnbull]

Dear OMs and YLs,
    It is better to wait for a well written manual than one which needs
work.   Fred Cady had an advantage of a pre-existing manual and knowledge
gained on the forum over a period of time.  Elecraft does not have this
luxury.    Also Fred did not need to cover everything that the Elecraft
manual covered but could elaborate in other areas.   Well Fred was a teacher
and writer so naturally he did a super job.   Elecraft did a good job as
well but it was good to have a second perspective.   I pray that I did not
step on the toes of the Elecraft technical writer who quite possibly is
Wayne or Eric.    It is a small company doing a wonderful job.   Better the
manual be a bit late than lacking.    I am really anxious to see how this
new radio performs.   Specifications are not given or available yet.   We
will need to look at Sherwood Engineering test spectrum to see the whole
story.    Naturally, I am rooting for Elecraft.

     Happy Christmas and a Prosperous New Year to all,who work in Elecraft.


                  73 Doug EI2CN

PS I suspect the changes in performance will be incremental.   You will
still work anything with a K3 that a K4 will work.  Probably the user
interface for the K4 will be improved and this may be quite significant to
many of us.

PPS It is good to see the modular approach still being used.  You can start
in with a relatively modest expenditure and build up over time.    It seems
to me that the real price of a fully loaded K4 is less than that of a fully
loaded K3.  This and the total box size is smaller.  

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