discussion limits <was> Re: [Antennas] 40m mobile antenna e.r.p. compared

[Gary Pewitt]

At 12:39 PM 4/30/05, Sam Morgan wrote:

>previous replys said:
>big snip

Try an Isotron antenna as advertised in QST.  They are a balanced antenna 
which means you don't need any radials.  I have 5 of them I used in my 
second floor apartment.  And yes I meant "in" my apartment.  I had the 80 
meter and 40 meter on one mast section on a tripod in the dining room and 
the 10/15/20 meter ones on another 5 foot mast section also on a tripod in 
the guest bathroom.  I worked Europe and Alaska from my Milwaukee 
condo.  They worked even better when I put them on the balcony.  I hung 2 
liter Pepsi bottles full of birdseed on them in case anyone asked what they 
were but no one did.  I have since moved to a 29 acre hilltop in Arkansas 
so I will be able to have some big antennas but I was quite happy with the 
Isotrons.
They are not expensive and I got no more than 2:1 on any band as checked 
with my MFJ antenna analyzer.
I used a tuner of course and wrote down all the setting as checked with the 
analyzer so It was no trouble at all to change bands.  For small changes I 
just tuned for maximum receiver noise.
73  Gary  de N9ZSV





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