In a message dated 96-09-24 10:22:02 EDT, you write:
>based the work on Moxon.
>
Was that really spelled with an X?
>That's interesting. Everyone I know using 1/4 wave elevated radials is
>doing so with a great amount of success.
Every year it gets worse and worse, it seems like it gets worse by the cube
of time passage.
Brown, Lewis and Epstein spent thousands of hours studying radials and
counterpoises and making field strength measurements on real systems. Their
data is well documented, and it shows 60 1/4 wl radials with NO ground
screen is within a dB of what theory predicts as perfect. 113 radials .437 wl
long (what they measured as 1/2 wl with the wire laid on the ground) is
within a fraction of a dB of perfect.
Then a Ham comes along, never makes ONE FS measurement, and claims insulating
a radial system improves things.
A few years later, we are told only four or six wires works. Again without
direct field strength measurements.
A few months ago, ther was an article claiming ONE radial would deliver 100%
efficiency.
A few weeks ago, I read where a 1/10 wl long fractal radial system would beat
a 1/4 wl radial solid copper disk.
Today I think I just read where a loading coil is about all we need, but
maybe m eyes are playing tricks on me.
All of this of course without a single FS measurement in a direct comparison.
Faraday and Maxwell must be rolling over in their graves when they look out
at today's "scientists and scholars". We know everything without any need to
measure anything.
73 Tom
>From dave@egh.com (David Clemons) Tue Sep 24 20:41:42 1996
From: dave@egh.com (David Clemons) (David Clemons)
Subject: The demise of N4BO
Message-ID: <Pine.LNX.3.91.960924153845.13901A-100000@newman.egh.com>
Eric (K6GV) says: "Bob, N4BP, now has the floor."
Arghh! I had NV6P in my log! Oh wait, that's not bad. Now I have my
double qso points again!
73, Dave Clemons K1VUT
>From rvhoeft@ingr.com (Hoeft, Roger V) Tue Sep 24 20:38:04 1996
From: rvhoeft@ingr.com (Hoeft, Roger V) (Hoeft, Roger V)
Subject: Thanks for info on the antenna farm
Message-ID:
<c=US%a=_%p=INTERGRAPH%l=HQ1-960924193804Z-10104@hq15.pcmail.ingr.com>
Just a quick note of thanks to those who responded to my query about the
antenna farm at W0AIH / W0UC. I saw 9 towers from I-94, but with 42 on
a 160 acre site, that's not a farm - that's a PLANTATION!!!
Any chance of getting the station info onto the contesting web site?
Thanks again.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Roger Hoeft
KA9EKJ
rvhoeft@ingr.com
Amateur Radio is a contact sport
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>From seay@alaska.net (Del Seay) Tue Sep 24 19:46:07 1996
From: seay@alaska.net (Del Seay) (Del Seay)
Subject: CATV Hardline Vf
References: <9609241611.AA13029@hp-and2.an.hp.com>
Message-ID: <32482C6F.B9D@alaska.net>
Tony Brock-Fisher wrote:
>
> Anybody know the velocity factor for CATV Hardline? I just
> picked up a nice hunk of 7/8" diameter, foam dielectric with
> black poly jacket...
>
> -Tony, K1KP, fisher@hp-and2.an.hp.com
Probably .88 - if you can find a mfg marker or p/n, I can get it
more closely defined. de KL7HF
>From km9p@contesting.com (Bill Fisher KM9P) Tue Sep 24 20:58:10 1996
From: km9p@contesting.com (Bill Fisher KM9P) (Bill Fisher KM9P)
Subject: Tuning the 4-square...follow up
Message-ID: <Pine.BSI.3.95.960924155436.12834A-100000@paris.akorn.net>
Tim Duffy, K3LR, pointed out a mistake in my previous message regarding
tuning the 4-square. My message said to ground the radiator to the
radials. That is incorrect. You want the radiator to float. So
disconnect the radiator (vertical wire in my case) from the feedline and
it will be floating and not seen by the vertical you are trying to tune.
Thanks to Tim for pointing that out. I must have misunderstood Tom when I
was talking to him about it.
73
Bill, KM9P - Still Quarter Century Applicance Operator!
Hey you don't have to be smart... just have a lot of smart friends!
|