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[TowerTalk] What about hams with small lots???

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Subject: [TowerTalk] What about hams with small lots???
From: (alsopb)
Date: Sun, 02 Sep 2001 19:14:56 +0000

Be really careful with balloon anythings.  

You might end up snagging an airplane.

The problem is a balloon/ant configuration that breaks somewhere else
than right at the balloon.  The trailing wire is a menace.

I understand there are some suggestions on how to fashion a break-away
attachment at the balloon to solve this problem.  I don't have any

de Brian/K3KO wrote:
> In a message dated 9/2/01 9:51:58 AM Pacific Daylight Time,
> writes:
> <<
>  I agree with AA2MF regarding the need for more info on simple, unique or
>  creative antennas for hams with small lots. We need to realize that,
>  regardless of original intent,  this is no longer a USA-only reflector but
>  due to the nature of the web is world wide in readership.
>  In addition to those in the US, there are countless thousands of hams, or
>  potential hams overseas in densely populated environments who cannot get on
>  the air due to space limitations, possibly allied with a lack of small
>  antenna know-how.
>  I have a horse laugh when contributors comment that they "only" have a 100ft
>  x 50ft lot and can "only" get up a 50 ft tower etc.
>  Try an industrial revolution era terraced house with front and rear yards
>  measuring 15 x 15 ft each. Probably heavily developed by the XYL with
>  concrete path, flower beds, a tiny pond  and a microscopic lawn. I have a
>  retiree friend in Europe with such a situation and he is by no means unique.
>  I designed a squashed rectangular quad for 15 mtrs to fit into his attic
>  space which is 12 x 10 ft and 8 ft high. It works quite well but he would
>  sure like to get on 20m to work me occasionally. For some other bands he
>  uses a covert 22 awg invisible end fed wire going across the street but
>  without an RF ground system. This naturally has mediocre performance.
>  Another caveat is that many such residences, especially in Europe, are owned
>  by the city and rented to the tenants and therefore can be subject to what
>  are essentially deed restrictions.
>  On this reflector there is a tendency for most of the discussions to be
>  associated with high end stations with stacked beams, Big 4-squares,
>  multiple towers and beverages hundreds of feet long. Discussion is heavily
>  slanted towards systems requiring lots of space and a healthy bank account.
>  Perhaps this is reasonable since this is an adjunct of a contest oriented
>  web site. However the reflector has developed into a great source of general
>  information for that essential  system which lives outside the window.
>  There are many contributors highly qualified and experienced in antenna
>  theory and practice. It would be a great service to large numbers of the
>  world wide ham population if some of these antenna gurus would consider
>  dreaming up some solutions to this universal problem or airing their
>  experiences here. Maybe we could get some more P5's etc on the air as a
>  result?
>  Thanks to all who have made this reflector one of the more useful and
>  enjoyable.
>  John AB4ET
>   >>
> You hvae very good points.  No matter how small the lot the idea I suggested
> of using a small deridgible to hold up a 1/2 wave wire fed j-pole fed on
> 160-40M is a simple solution and--it doesn't require all those radials.  It's
> great for contests on 160M anywhere. The 1/4 wave J gets it's major field up
> off the ground a 1/2 wave.  You could go ever higher.
> You can also run a "Green Insulated Wire" along fence lines of the neigbors
> for a Beverage.  Match it with an L network.  It even works on xmit.  The top
> wire of fences can be put into service (at night) with small insulators with
> a little creativity.  You can use the ground side of the 110 VAC for recieve
> also on the BC band-40M.  Use a series .1 ufd and then a 3 gang BC variable
> for peaking. There are some very strong LF singals "down under."  Years past
> the receiver manuals showed a wire from a ground rod connected to the "G"
> terminal and a 75' wire connected to the "A" terminal.  I found out in the
> 30's they had it all wrong on the BC band and a bit higher.  Connect the
> ground lead to the "A" terminal with the series BC 3 gang variable.  You can
> still do it now in 2001.  I had a 25' wire going to a buried oil tank for a
> ground.  It worked very well on recieve on 160M so I gave it a try on xmit
> with my IC-720.  It tuned to a 1.2:1 SWR.  It should tune with most tuners in
> the rigs now.  At 7 PM in the evening in the fall I worked a W6 in the Bay
> area from Seattle with a S7 report.  I told him I was working him "ground
> wave" and I had to explain.
> Another trick that works is to run 136 of wire 10' off the ground on the
> property boundries around a corner if necessary on small lots to a very good
> ground (bury an old oil tank or a copper sheet of about 9 sq ft 6' udner the
> ground horizontal).  The Lo-Z there on all bands reflects back to the end of
> the wire (1/2 wave multiple on all bands) for an easy match.  Make it 160'
> for BC SW listening from 3 MHz.  Use the BC variable for peaking.  For those
> that don't know what a BC variable is and there are many, it's the 3 gang
> variable used in BC radios years ago with 365 uufd capacity in each gang--tie
> them together. They can still be found in flee markets.  There are a few
> left--I haven't purchased them all as yet.  They work great in 100W L
> networks and don't arc with Zloads less than about 1000 ohms.  If you remove
> plates in a "certain stagered manner" it becomes about 60 uufd per section
> and can be used in transmitter finals up to about 500W and L networks with
> Hi-Z loads.
> One ham lived next to a water tower and gamma matched it.  I have one 1 mile
> away out in the county (with burried power lines) and have visions of a
> beverage to it and using it as a 600 ohm termination.  It would create a new
> kind of "Fire Water" to the farm yards.  The cattle would do a new type of
> "SSB Fire Water Dance" after a drink and have a "certain glow" over them.
> Would you believe that Iron wood and silver maple trees can be gamma matched
> by bending down a limb fir a "LimbOmatch."  That's even shown in some Army
> Manuals.  The root radial system is all right there.  Pine trees tend to make
> "Log Periodics" for high angle.  k7gco
> List Sponsored by AN Wireless:  AN Wireless handles Rohn tower systems,
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List Sponsored by AN Wireless:  AN Wireless handles Rohn tower systems,
Trylon Titan towers, coax, hardline and more. Also check out our self
supporting towers up to 96 feet for under $1500!!

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