Has anyone tried RG-8X PL-259 crimp connectors on RG-6?
Carl
KM1H
- Original Message -
From: Pete Smith N4ZR n...@contesting.com
To: topband@contesting.com
Sent: Saturday, December 15, 2012 3:04 PM
Subject: Re: Topband: substandard quality F double females
Amphenol F connectors?
My own experience with 1/2 wave verticals is that they certainly do require
a good ground.
Maybe a rod in a saltwater marsh is sufficient but not in many other cases.
Examples:
A Shakespere CB whip in my 66 Corvette which was advervtised for fiberglass
cars. It couldnt be heard a mile away
You ever wonder why a few on here are so much louder than their competition
with similar installations when 1-2 keep trying to make us believe it has
nothing to do with the radials beyond a small number? IF he is correct then
why the big difference? Anybody care to offer a guess?
Or the
How long did the KLM last before the light boom folded, or the element to
boom brackets failed or the linear loaded insulator let go? One good wind
storm?
Doug
Think of all the ways you can hurt yourself laughing.
-Original Message-
A 4el 40M KLM at 120' fixed that.
Carl
KM1H
Or the person on here who went from an extensive radial system to a full
screen claimed a 5dB improvement but now denys the possibility. Its in the
TB archives from 1998.
Carl,
Please try to stop that silly disappointing long-time practice of re-writing
what other people say just to start a
A Shakespere CB whip in my 66 Corvette which was advervtised for
fiberglass cars. It couldnt be heard a mile away with 4W. I added
radials from the base on the rear deck to the frame on all 4 corners and
then it worked much better. This was back in the late 70's for several
years.
CB antenna
Subject: Re: Topband: raised radials
All the years I have been on top band, I can't recall ever hearing or
working him - DXing on Contesting. With all his hardware on 160, surely
sometime his presence would be evident other than the reflector... Anyone
else?
Merry Christmas to all.
73
- Original Message -
From: Tom W8JI w...@w8ji.com
To: Carl k...@jeremy.mv.com
Cc: topband@contesting.com
Sent: Sunday, December 16, 2012 11:26 AM
Subject: Re: Topband: raised radials
Or the person on here who went from an extensive radial system to a full
screen claimed a 5dB
On 12/16/2012 8:31 AM, Tom W8JI wrote:
You likely had an antenna with 1/2 wave of wire spooled up on a short
fiberglass rod, which would never behave like a half-wave.
You are exactly right. Unfortunately, this myth dies hard.
A few years ago a ham magazine had a article about a 160
meter
Friday late afternoon around 4 pm (EST), I was listening to 160 and was hearing
many signals from Europe and Russia. Some were quite loud.
I probably called at least a dozen different stations with no luck. My transmit
antenna is an inverted L which is about 85 feet vertical. I even went
The 10 dB, or was it 20 dB, claim could be a case of belief preservation
as described in section 3.5 of the paper *Teaching Critical Thinking:
Lessons for Cognitive Science*, by Tim van Gelder
http://frank.itlab.us/forgetting/teaching_critical_thinking.pdf
Dave WX7G
Tom,
I think you are extrapolating one case with a particular radial length to
all vertical antenna ground systems.
The N6LF radial papers detail his NEC-4 simulations and measurements of
vertical antennas and radial systems. If I read his papers correctly base
impedance does track field strength
Then, why do broadcast stations that use vertical towers at approximately a
half wavelength, purchase valuable real estate and spend thousands of dollars
for the copper to install from 120 to 240 or more radials, each usually a half
wave or more in length?
See G. H. Brown: Ground Systems as
Hi Don,
Then, why do broadcast stations that use vertical towers at approximately
a half wavelength, purchase valuable real estate and spend thousands of
dollars for the copper to install from 120 to 240 or more radials, each
usually a half wave or more in length?
They almost always do
Tom,
I think you are extrapolating one case with a particular radial length to
all vertical antenna ground systems.
The N6LF radial papers detail his NEC-4 simulations and measurements of
vertical antennas and radial systems. If I read his papers correctly base
impedance does track field
Charlie, your starting to sound like the other guy; trying to interpet my
posts and spin to your benefit and getting demeaning in the process. Give me
a bit more credit than that...OK... I know a bit about antennas.
To be a bit more clear the tuner was always connected to a ground.. First to
Charlie, you are so far off the wall Im not even going to bother with a long
detailed answer since it likely wont go thru.You dont have a clue what Im
trying to get across so why bother.
There was absolutely nothing wrong with my 40M configurations, one version
wasnt up to expectations and
Hi, Herb!
Well, it's easy to forget that receiving conditions can be quite different
at different ends of the path! An hour before your sunset, it had been dark
for a while western and central Europe and the noise level on 160 can often
pick up as darkness settles in on the eastern end of the
Hi, Herb!
Yes - and sometimes the daytime noise level will be a bit lower on 160 and
then pick up as the grey line and then darkness move over us! And I can
sympathize with those Europeans - and being in the city, where my inverted
L with the three resonant elevated radials has been somewhat
Well, I suspect that one can't get a complete picture of the correlation
between base driving point impedance and radiated field intensity unless we
could measure at a multiplicity of elevation angles. Has anyone looked into
changes in the elevation pattern as the ground systems are modified? Much
3830 forms are now available for the Russian 160m Contest.
73!
--
С уважением,
Vlad / R7LV mailto:r...@dx.ru
___
Topband reflector - topband@contesting.com
I can think of NO earthly reason,that makes ANY electromagnetic sense to
me, as antenna engineer fo placing a radial system under the end of a
vertical 1/2 wave antenna - earth-worms not withstanding!
** Another case of not understanding the antenna or the purpose and handling
of its
On 12/15/2012 7:59 AM, DAVID CUTHBERT wrote:
Mike that QTH looks alot like the Great Salt Lake of Utah where I have
operated a few 160 meter 'tests running a balloon vertical.
Dave WX7G
I learned about this QTH from Earl K6SE (SK). The terrain to the north
isn't so great (high
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