Hi.
I love this kind of analyses. I have two questions:
1. In ~1995 I downloaded YTAD and have been using
it in the past years. I learned there is a new YT (Also By
N6BV) that comes with the ARRL Antenna Book. What is
the difference between YTAD and YT?
2. There is a new version 98.1015W for Windows of ICEPAC
(By NTIA/ITS). It comes with a new TIME analysis option very
useful for HAM radio. Is there any reason to use VOACAP instead
of ICEPAC? Which one is more reliable? I have been using
ICEPAC because is the latest prediction model.
73s Eric, NP3A
-----Original Message-----
From: k6ll@juno.com <k6ll@juno.com>
To: towertalk@contesting.com <towertalk@contesting.com>
To: <towertalk@contesting.com>
Date: Monday, November 02, 1998 12:58 PM
Subject: Re: [TowerTalk] Antenna Gain and Take-off Angle
>
>
>On Mon, 2 Nov 1998 01:36:44 -0500 "Dick Green" <dick.green@valley.net>
>writes:
>>
>>I just got a great propagation program called WinCap Wizard. It has
>>provision for entering gain and take-off angle data for up to three
>>different antennas, and I'd like to try some predictions with numbers
>>for my
>>setup. I have an 80M Inverted Vee with the apex up about 65 ft.
>>(probably an
>>all-angle, all-azimuth radiator), a 40M 4-square with 60 radials per
>>element, and a TH-7 on a 72' tubular crankup. I figured I would start
>>by
>>trying some theoretical numbers from the literature, but those sources
>>probably won't give me much help with the TH-7 at different heights.
>>Given
>
>The freeware program YTAD, available through the arrl.org web site,
>uses a four element yagi as its default antenna (actually its ONLY
>antenna) and will draw elevation patterns at any height above ground.
>It allows for flat or irregular terrain. That should be a close
>approximation of your TH-7.
>
>Incidentally, the freeware program MAKEVOA.EXE will convert the
>YTAD output file to a gain vs elevation table, which can then
>be selected as the antenna input to the freeware program VOACAP,
>which will then do a state-of-the-art propagation prediction.
>
>For a kicker, the freeware program VOAAREA will draw color contours
>of your signal strength over any selected region of the globe. It's
>all fun stuff to play with, and it's all FREE.
>
>Dave Hachadorian, K6LL
>Yuma, AZ
>K6LL@juno.com
>If it's free, it's for me!
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>Dave Hachadorian, K6LL
>Yuma, AZ
>K6LL@juno.com
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