That's point really isn't it, if your happy doing what you're doing and
DXing is not important, then any antenna that does job is okay. But the
discussion was about the best bang for your buck and the best antenna.
The 3 element Steppir is certainly the best bang for the buck if you want to
be competitive and work all bands efficiently with a low SWR from one end of
the band to the other end, and have a fairly light weight tower with a small
area to put it in.
Mike
-----Original Message-----
Its not on 12 or 17. I have to use wires for those bands, which is one
reason this thread got started, remember?
I've had a TH7 for a number of years, I still have worked anyone I've
heard,. wire antennas included.. As for sitting around all day trying to
work a DX station, well I'd never do that anyway, its not important to me.
73 Buddy WB4M
> How's that TH7 on 17 and 12? K7ZA
> ----- Original Message -----
> From: "F.R. Ashley" <gdadx2@clearwire.net>
> To: "Tower and HF antenna construction topics." <towertalk@contesting.com>
> Sent: Sunday, January 24, 2010 01:24
> Subject: Re: [TowerTalk] steppir v. lpda
>
>
>>
>> Am I going to work something on a SteppIR that I can't work on a LP? Or
>> a
>> TH7?
>> Don't think so.
>>
>> 73 Buddy WB4M
>> ----- Original Message -----
>> From: "Steve, W3AHL" <w3ahl@att.net>
>> To: "Tower and HF antenna construction topics."
>> <towertalk@contesting.com>
>> Sent: Saturday, January 23, 2010 8:05 PM
>> Subject: Re: [TowerTalk] steppir v. lpda
>>
>>
>>> Since the Tennadynes that I've seen have a 50 ohm nominal feed point Z,
>>> not
>>> 200 ohm, the issue is a little different.
>>>
>>> Having a balun at the front of the boom isn't a problem if it's
>>> constructed
>>> correctly. Using a coil of coax bundled up and flapping in the breeze
>>> will
>>> eventually lead to failure probably. A better solution is to use
>>> ferrite
>>> core balun is mounted in a weatherproof plastic box with its output
>>> terminals screwed into the boom / transmission line.
>>>
>>> Some Tennadyne owners do place the 1:1 balun at the mast plate and claim
>>> there is no significant difference in the pattern.
>>>
>>> What affect the feed line imbalance has in either case hasn't been
>>> evident
>>> in the few field measurements I've seen posted. Whether it is enough to
>>> justify constructing a custom balanced feed line back to the mast is
>>> doubtful, if a couple of ferrites at the mast are effective.
>>>
>>> LPDA's that do use a 200-ohm transmission line boom usually have a feed
>>> point Z of 95-110 ohms.
>>>
>>> Steve, W3AHL
>>>
>>> ----- Original Message -----
>>> From: "Gene Fuller" <w2lu@rochester.rr.com>
>>> To: "Tower and HF antenna construction topics."
>>> <towertalk@contesting.com>
>>> Sent: Saturday, January 23, 2010 4:23 PM
>>> Subject: Re: [TowerTalk] steppir v. lpda
>>>
>>>
>>>> For the umpteenth time,ehy not make up 200 ohm line,using 1/4" copper
>>>> tubing, on standoffs to keep aay from the boom, placing the balun back
>>>> at
>>>> the mast, where it is accessible.
>>> ..snip..
>>>
>>> _______________________________________________
>>>
>>>
>>>
>>> _______________________________________________
>>> TowerTalk mailing list
>>> TowerTalk@contesting.com
>>> http://lists.contesting.com/mailman/listinfo/towertalk
>>
>> _______________________________________________
>>
>>
>>
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>
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