Without context you are not making any sense. Quoted material would be
considerate.
Sent from my iPhone
> On Oct 12, 2019, at 08:45, Bill wrote:
>
> Of course you do! I was only reporting what I have found to be effective in
> my particular circumstance.
>
> Further, not everyone has the m
Of course you do! I was only reporting what I have found to be effective
in my particular circumstance.
Further, not everyone has the manual dexterity or prowess to build
things themselves - hence, they purchase as needed. Hopefully, without
recrimination.
Bill W2BLC on the air for over 60 y
On 10/11/2019 2:00 PM, Bill wrote:
Might I suggest a Common Mode Filter, such as that sold my myantennas.com
All the mumbo-jumbo on that site tells me that they selling snake oil.
FAR better, and much less expensive, wind your own using these
guidelines. k9yc.com/2018Cookbook.pdf
73, Jim K9
On 2019-10-11 3:19 PM, Doug Person wrote:
>
My favorite is the "Differential-T" 986 which tunes everything with
very little effort.
Any of the many "T" (single shunt coil, multiple series capacitors)
network tuners are high pass networks. They do very little to
suppress harmonics and/or phas
Might I suggest a Common Mode Filter, such as that sold my myantennas.com?
My standby antenna is an endfed half-wave from the same source. It hangs
from the eve corner and is noisy - the kind of noise that comes from
today's modern household. I put a CMC Filter on it right at the bulkhead
here
Is there any modern-day equivalent to the old Johnson Matchbox? I use
several different MFJ tuners with good results. My favorite is the
"Differential-T" 986 which tunes everything with very little effort. I
don't actually know how efficient it is but it tunes my 132' doublet fed
with 450 ohm l
In WVARA, we have very good success running several bands on the
same antenna at the same time using triplexers. We set up our
triband yagis parallel to each other so they are in each other's
low-gain area. We have been able to operate CW, SSB, and digital
on the same band at the same time.
T
A simple way to make a center-fed half-wave dipole multi-band is by
using alligator clips to disconnect outer section a dipole in order
to run on a higher freq band.
Simple make a dipole for the lowest freq of interest and then cut the
wires at the length for the higher band, attach an alligat
On 10/11/2019 5:32 AM, Wes wrote:
I don't suppose your callsign has anything to do with the success of
your antennas.
Vic's original call was K2VCO. As kids, we worked on 40M traffic nets
before heading out to high school in the '50s. We reconnected about 15
years ago after he and I had both
On 10/11/2019 5:32 AM, Wes wrote:
> I don't suppose your callsign [ 4X6GP ] has anything to do with the success of
> your antennas.:-)
When I was 4X4UQ in the mid-1960s I had to beat off the Europeans while
running 75 watts into a tri-bander about 1 meter above the roof of a
4-story cinder-black
adder line feed is about 160 feet, then the balun, and finally about 13
feet of RG8XU to the KAT500.
73
Lyn, WØLEN
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Rick WA6NHC
Sent: Thursday, October 10, 2019 6:17 PM
To: elecr
Wow! We're way over the single topic posting limit on this thread. Let's end it
for now in the interest of helping others survive email overload.
73,
Eric
/mooderator.. elecraft.com/
On 10/11/2019 8:52 AM, Lyn Norstad wrote:
Rick -
You may have a balun issue. I had problems too until I switch
: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Rick WA6NHC
Sent: Thursday, October 10, 2019 6:17 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Center-fed antennas
I have over 200 countries on a similar antenna, though I had to use
another tune
Ha ha, that's a good one, I too have a 20dB callsign. Not always but I'm
sure on occasion it helps. I often get 10 to 20 over nine reports
running 100 watts to a 2 element (Force 12 C3 @ 24m) from Europe when
more powerful stations from there make only 5-6 to 5-7 here.
Martin, HS0ZED
On 11/
I don't suppose your callsign has anything to do with the success of your
antennas.:-)
Wes N7WS
On 10/10/2019 10:54 PM, Vic Rosenthal wrote:
Things I’ve learned by experience:
In 63 years as a ham, I’ve had several :-) HF antennas. The ones that gave me
the greatest overall satisfaction hav
I don't do field day. I've been using monoband dipoles so far for portable
operations due to cost and weight constraints. They work incredibly well,
and I hope to go out with a high Q antenna for 30m and a long pole to try
end fed vertical. (My long pole seems stuck in the post! Courier emailed.).
You bet. The Johnson Matchbox is as good as any expensive band pass filter.
Victor 4X6GP
> On 11 Oct 2019, at 2:57, Joe Subich, W4TV wrote:
>
>
> The one "multiband" antenna one can use in a multi-transmitter
> configuration is the flat-top with open wire feeders and a
> *Link coupled* tuner.
Things I’ve learned by experience:
In 63 years as a ham, I’ve had several :-) HF antennas. The ones that gave me
the greatest overall satisfaction have been balanced, horizontal antennas. The
worst have been verticals with inadequate radial systems or low random-length
wires. Inverted Vs with a
On 10/10/2019 4:56 PM, Al Lorona wrote:
an undue fear of noise, which some hams have,
NO fear of noise is undue. It is EVERYWHERE, and it gets worse every day!
73, Jim K9YC
__
Elecraft mailing list
Home: http://mailman.qth.net/mailm
Extra Class licensees vs. Extra Class Operators ... huge delta there ...
-- 73 de Mike Flowers, K6MKF, NCDXC - "It's about DX!"
> On Oct 10, 2019, at 4:12 PM, Bob McGraw K4TAX wrote:
>
> I used my Johnson Matchbox at our Field Day event about 3 years ago. I
> went through each band and seve
That's a sad commentary on the state of modern ham radio
To, k2bew
On Thu, Oct 10, 2019, 10:12 PM Bob McGraw K4TAX wrote:
> I used my Johnson Matchbox at our Field Day event about 3 years ago. I
> went through each band and several frequencies on each band and compiled
> a written chart id
I used my Johnson Matchbox at our Field Day event about 3 years ago. I
went through each band and several frequencies on each band and compiled
a written chart identifying the settings for each band/frequency.
After 2 hours of trying to work stations on 20M, the radio failed and
they came
lhelm
Sent: Thursday, October 10, 2019 6:44 PM
To: Bob McGraw K4TAX ; elecraft@mailman.qth.net
Subject: Re: [Elecraft] Center-fed antennas
Bob,
Bandpass filters at each station will help a lot, but they do not have
infinite out of band rejection.
There is still a huge benefit with single band antennas
Joe,
I agree completely, bring your Johnson Matchbox to the next Field Day!
Or even your old plug-in coil open frame link coupled balanced tuner.
Who has a link coupled tuner (like the Johnson Matchbox) these days?
Those are big boat anchor box these days (and hard to find). I have one
that
As usual, there are exceptions to everything. A multi-band beam, such as a C3S
or the modern equivalent, will perform incredibly well when used with bandpass
filters and a triplexer. The 10,15 and 20 meter stations all will use the
antenna through the triplexer/BPFs with no issues. This also tur
The one "multiband" antenna one can use in a multi-transmitter
configuration is the flat-top with open wire feeders and a
*Link coupled* tuner. The link coupled tuner is a bandpass filter
that significantly reduces harmonic/broadband noise just like the
"Q" of a single band antenna.
73,
...
Fair enough, but it kinda goes without saying that in a group FD with 1 station
per band they'll use resonant, single-band antennas. If this is our best
argument against the 'multiband dipole', then that antenna still holds its own
pretty well in a multitude of other situations.
I have always f
Bob,
Bandpass filters at each station will help a lot, but they do not have
infinite out of band rejection.
There is still a huge benefit with single band antennas. My club uses both.
Last Field Day (3F operation) one station got on the air with a
multiband vertical, and all other operators
I have over 200 countries on a similar antenna, though I had to use
another tuner than the KAT500, for 160M. Average height was about 35'.
Just keep the coax short, like under 10' and as much center fed wire as
you can put in the air, it'll play. It won't rock your world, it'll
make you work
I thought a Band Pass Filter at each station resolved that issue.
73
Bob, K4TAX
On 10/10/2019 5:27 PM, Ken G Kopp wrote:
Well-said, Don.
73!
Ken Kopp - K0PP
On Thu, Oct 10, 2019, 16:23 Don Wilhelm wrote:
All this talk of multi-band antennas for Field Day ignores the problem
of multi-stat
Precisely because of this objection and countless others, is why I expressly
stated, "...at the expense of any other possible advantage." I think we all
understand that there's no magic antenna. The 'magic' of the antenna we're
discussing here is simplicity, all-frequency operation, and high eff
All this talk of multi-band antennas for Field Day ignores the problem
of multi-station Field Day operation.
There is sufficient pickup of one transmitter's energy on the antenna
being used by a receiver on another band.
For that reason, my club has banned the use of multiband antennas for
Field
On Thu, Oct 10, 2019 at 2:06 PM Fred Jensen wrote:
> Yes, however ... a center-fed dipole long enough to be moderately close
> to a half-wave at 40 will develop a serious case of acute lobe-itis when
> operated at higher frequencies, squirting your RF in a variety of
> directions, many of which m
Yes, however ... a center-fed dipole long enough to be moderately close
to a half-wave at 40 will develop a serious case of acute lobe-itis when
operated at higher frequencies, squirting your RF in a variety of
directions, many of which may not be productive for your intended
objective. Try, a
I'm having great success with a horizontal center-fed "dipole" that has been
sized (360 feet long) to be an Extended Double Zepp (4.7 dbi gain) and cut for
the low end of 80 meters. I feed it with 600 ohm "True" Ladder Line from a
Balun Designs Hybrid Balun (1:1 Current and 4:1 Voltage all in o
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