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Re: [TenTec] New and Improved Terminology/Gnded tip on whip ant.

To: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Subject: Re: [TenTec] New and Improved Terminology/Gnded tip on whip ant.
From: Bwana Bob <wb2vuf@verizon.net>
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Sat, 01 Jan 2011 17:45:33 -0500
List-post: <tentec@contesting.com">mailto:tentec@contesting.com>
Yes, QST  in around 1967 featured the "mobiloop", which was similar.  I 
can't imagine driving around with one of those on the car today.


On 12/31/2010 4:33 PM, Bill Harris wrote:
> wb2vuf's  comments remind me of an article in CQ, early fifties (I believe) 
> The author pulled his 75 meter whip antenna over and grounded the tip on the 
> front bumper.  The picture of the car was on the front cover;  A Studebaker 
> convertible.  If my memory serves me right, the author said it increased his 
> signal approximately 6 db.
> This article was before the Korean Police Action.  During the"PA", the Army 
> did utilize  pulled over whip antennas on their communication trucks;  A 
> deuce and a half with an HU17 com/hut on back,  pulling a trailed AC 
> generator.  Mobile rig was a BC-610 xmtr.&  a BC312(?) Worked great for short 
> skip.
> There may be a few of you who still have a copy of that CQ issue. I'm still 
> looking for mine.
> Happy New Year ya all.
> BillHarris/w7kxb
>> Date: Fri, 31 Dec 2010 15:28:18 -0500
>> From: wb2vuf@verizon.net
>> Subject: Re: [TenTec] New and Improved Terminology
>>    We called it "short skip", during my misspent youth. From my Novice
>> days in 1966 to the present, I don't think I've ever had an antenna
>> higher than about 25 feet anyway.  I work mostly 80 m traffic nets,
>> where we're more interested in covering the state than in DX.  Years
>> ago, I put up a ground mounted trap vertical because there were no big
>> trees at the QTH.  On 75m I couldn't be heard 5 miles away. I then
>> rigged a low 1/4 wave inverted "L" fed at the base of the vertical and
>> got instant statewide coverage.
>> Today, when I go on vacation with my Ten-Tec Scout, I rig a low 80 meter
>> dipole. Operating from a wooded lake valley, I get great signal reports
>> on 80, with signal strength at a range of 50 miles as good a my signal
>> at 5 miles.
>> I first heard the term NVIS (Near Vertical Incident Skywave) back in
>> 1981.  I was doing flight testing some navigation equipment at Lakehurst
>> Naval Air Station on NJ and I came a cross a couple of guys with a Huey
>> helicopter and an old Dodge M37 truck with some funny antennas on them.
>> They called the antennas shorted loops. They were sort of half loops
>> with the far end grounded to the helicopter tail boom or to the truck's
>> front brush guard. They were simultaneously developing these low-profile
>> antennas and experimenting with HF NVIS.  The need for this in a
>> helicopter came out of the Viet Nam experience where it was proven that
>> a high flying helicopter is pretty vulnerable to ground fire.  The new
>> aviation doctrine that evolved from that is "nap of the earth" (NOE)
>> flying where the helo flies low and scoots through valleys and ducks
>> behind hills.  This kind of flying is not conducive to VHF line of sight
>> communication, hence the need for HF NVIS operation.  HF NVIS was also
>> used during Operation Desert Storm, particularly since there were not
>> enough SATCOM channels to go around.
>>    Anyway, it works for me and my operating style.  I use a low 80 meter
>> dipole plus a low 65 foot inverted L as a backup.  The big rigs (Paragon
>> and Corsair) do fine, but the system works well for the little rigs
>> (Scout and Century 22) which only run 20 or 30 watts.
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