with the correct impedance match, most of the power is transfered to the
antenna.
And, that power will certainly be maximized on whatever resonant frequency
the antenna happens to be. All of these verticals do state a resonant
frequency.
You use a tuner to fool the radio into thinking it is loading a resonant
antenna.
So weather they are better or worse than an antenna that is resonant with
traps is the question.
obviously they're not going to be as good as a simple quarter wave vertical
on whatever band you want to use.
Most of these antennas are designed to be some resonant wave length on 20 or
40 or something though, and the rest of the bands are tunable.
73
Colin, V A6BKX
--------------------------------------------------
From: "Steve Dresser" <[log in to unmask]>
Sent: Sunday, June 29, 2014 2:03 PM
To: <[log in to unmask]>
Subject: Re: antennas
> If the antenna isn't resonant on a band, then how much power is actua=
> lly being transferred to the antenna? You might do just as well with =
> a random length wire.
>
> Steve
>
>
> ----- Original Message -----
> =46rom: Colin McDonald <[log in to unmask]>
> ,to3 [log in to unmask]
> Date: Sunday, June 29, 2014 14:43
> Subject: Re: antennas
>
>>
>>
>> the transformer at the bottom is a simple impedance matching device=
> I=20
>> believe.
>> the antenna isn't resonant on any ham band likely, but it must pres=
> ent a=20
>> reasonable impedance to work.
>> With a good impedance, the power transfer to the antenna is better =
> and even=20
>> though it's not resonant specifically, the tuner will make it work =
> on=20
>> whatever band you want.
>> I'm not sure these types of antennas work better than a trapped ver=
> tical=20
>> that is resonant on the ham bands.
>>=20
>> 73
>> Colin, V A6BKX
>>=20
>>=20
>>=20
>> --------------------------------------------------
>> From: "richard fiorello" <[log in to unmask]>
>> Sent: Sunday, June 29, 2014 7:32 AM
>> To: <[log in to unmask]>
>> Subject: Re: antennas
>>=20
>> > Hi Jim;
>> > I thought the flag pole idea was quite interesting particularily
>> > in that I have a large empty front yard but the back yard is
>> > useless because of wires going diagnally across. Didn't like the
>> > flag pole price but the fact that it was self supporting was
>> > nice. Talked with Tom and still don't really understand the
>> > tuning arrangement. I have an external s g c tuner so that's not
>> > a problem. Apparently they don't use traps or capasetors just
>> > some kind of transformer at the base. Wonder what the story is
>> > with this magical transformer? It sounds to easy which bothers
>> > me. Does yours work on 40 meters and how is the noise level?
>> > Also how much of a construction project was it? Tom seemed to say
>> > that you don't have to do anything particular with the antenna
>> > when setting it up to tune it. As for those radials, what length
>> > did you use? I couldn't manage 32 feet but he said that 12 would
>> > work. Any info would be interesting.
>> > in richard
>> > sent from my braille note
>> >
>> > ----- Original Message -----
>> > From: Jim Shaffer <[log in to unmask]
> @> @> ,to3 [log in to unmask]
>> > Date sent: Sat, 28 Jun 2014 22:15:07 com0500
>> > Subject: Re: antennas
>> >
>> > Richard, I'm using a zerofive 29 foot vertical. I have it ground
>> > mounted
>> > with 4 radials. It works fine for me, although it does require a
>> > tuner.
>> > The tuner in my rig will tune it on almost all places except the
>> > low end of
>> > 6 meters and 40 meters. I'm not sure if it'll tune it on 80
>> > either. I use
>> > an MFJ 993B external tuner that's able to tune it.
>> > =97
>> > Jim, KE5AL
>> >
>> > -----Original Message-----
>> > From: richard fiorello
>> > Sent: Saturday, June 28, 2014 7:03 PM
> @> @> ,to3 [log in to unmask]
>> > Subject: antennas
>> >
>> > Hi;
>> > Thought someone mentioned zero five antennas here a while back.
>> > Wonder what type you are using? Had a chat with Tom but still
>> > rather perplexed.
>> > w b 2 h w a Richard
>> > sent from my braille note=20
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