Hi,
Jake,
Jake starts with an interesting assumption: HF6V or ANY vertical.
HF6V is not the same as any vertical, as the 1/4 wl on 20m 75 own coax
which was delivered with the antenna acts as a matching stub on 20m.
I have the same question:
Is a choke needed, and where do I place it on a
Henk PA5KT pa...@remijn.net wrote:
Is a choke needed, and where do I place it on a regular 1/4
vertical and where on a HF[6|9]V?
The purpose of a choke is to prevent the coax shield
from becoming a part of your antenna.
Do you want to connect directly to your antenna
a long conductor with
The link in the opening post of this thread shows an interesting, animated
analysis of the elevation gains of a monopole, based on a NEC far-field
analysis not including the surface wave.
I then posted this comment, Reality is that radiation leaving the monopole
at elevation angles of at
The answer below by Sinisa is one of the best and most factual I have ever
seen.
I would only add that when the coupling through air greatly exceeds the
coupling through common mode, there is no reason to increase the choke
impedance. Elevated radials are a different story, because common
this brings back a lot of memories..i arrived on rarotonga a week
after a French Dxpidition did, who was set up in the K2KW motel room with
vertical antennas on the beach just as you would imagine. the motel
management said she was sorry, and set me up in a cottage (from the same
motel)
There is a lot more to winning an all band DX contest besides a great 160M
location.
Tim and Frank picked locations carefully for low noise, used the various
tools to understand propagation and the angles needed for 10-160M under all
sunspot conditions, assembled a hi tech and reliable
im ny life i have never been is a quieter radio location than rarotonga!
mike w7dra
On Wed, 13 Aug 2014 09:47:06 -0400 Tom W8JI w...@w8ji.com writes:
this brings back a lot of memories..i arrived on rarotonga
a week
after a French Dxpidition did, who was set up in the K2KW motel
alexey
yes, i understand the thinking, re JT-9 / JT-65; best QSO you never heard as
W4ZV said...
and, 'if i did not hear it with my ears, it does not exist, I can not work it,
it doesn't count' also..
still, ARRL DXCC desk doesn't care what mode we use, right? sowhat the
heck?
as jim,
I asked a question on the above. Got answers, both here and direct..
BUT, Sinisa YT1NT, VE3EA, answered it in a way this old brain can comprehend.
THANKS Sinisa!!
Nuff said. Thanks to all.
Now on to North facing owls and wenches. GRIN
73
K9WN Jake
_
Modeling programs are an excellent tool to calculate and predict some
properties of antennas - radiators.
What they do not see is the propagation mechanism after RF leaves the
antenna. Space wave can be hugging wave.
While the high frequencies signals behave more like high frequency
sounds -
Wow the more this thread goes the deeper the s**t gets,
the first poster has no chance,,
reminds me of a pig wrestling contest, you jump in and all you do is get is
full of mud and s**t.
Im heading down to the beach and going to holler real loud, see if any of
you guys in CA can hear my
One would think if there was a 10-20 db penalty, it would show on
skimmers
and that W2GD would be unbeatable being on the water. I'm sure I'm
missing
something. What is it I am missing?
A contest certainly is not only about transmit signal strength, nor is
the lowest angle propagation always
Anyone who is familiar with the San Francisco Bay Area has noted
KGO's three AM broadcast band transmitting antennas located *IN* the
water of the East Bay. From KGO's history page:
Three 300-foot towers were constructed, each anchored in salt water.
KGO became the first San Francisco station to
On 8/13/2014 8:12 PM, Radio KH6O wrote:
Anyone who is familiar with the San Francisco Bay Area has noted
KGO's three AM broadcast band transmitting antennas located *IN* the
water of the East Bay. From KGO's history page:
You would think this would make KGO a superstation, however, my
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