Hey, he makes a nice OCF at a reasonable price and guess what, he gives 10%
discounts to Public Safety ACS groups. Yes, roll your eyes for a few more
moments... a ham radio business that provides a value and price performance
ethic that we rarely see these days.
$50 for 16 turns of #12 wire. I'm surprised DX Engineering doesn't charge
to access their web site!
----- Original Message -----
From: "Jim W7RY" <firstname.lastname@example.org>
To: "David Jordan" <email@example.com>; <firstname.lastname@example.org>
Sent: Friday, August 05, 2011 6:34 PM
Subject: Re: [TowerTalk] Metal roof
> Now that is a comparison! Buxcom to DX Engineering. "hahaha"
> Rolling my eyes...
> Jim W7RY
> From: "David Jordan" <email@example.com>
> Sent: Friday, August 05, 2011 3:13 PM
> To: <firstname.lastname@example.org>
> Subject: Re: [TowerTalk] Metal roof
>> Our court house has a copper metal roof (flat). Hustler Vertical
>> require an added $45. shunt coil (16 turns) to couple the low impedance
>> 52ohm coax. The Hustler vertical trap antennas are not designed to
>> over a perfect or very good ground radial system. I guess there are more
>> poor to fair radial systems out there then good ones. So those of us with
>> good ones have to pay an extra $50 BUCKS... GO FIGURE! BUXCOMM sells
>> OCF antennas and they offer their antenna in three options, all for the
>> price. So, you tell them the wire is going to be up over 50ft you get one
>> type of balun... if it close to the earth you get a different one or if
>> is going to be over a roof of a building yet a third type, but they don't
>> screw you because of your choice, geez DX Engineering, hahaha
>> ----- Original Message -----
>> From: "Jim Lux" <email@example.com>
>> To: <firstname.lastname@example.org>
>> Sent: Friday, August 05, 2011 3:40 PM
>> Subject: Re: [TowerTalk] Metal roof
>>> On 8/5/11 11:44 AM, Pete Smith wrote:
>>>> Without any direct experience, other than a trap vertical on a 20 x 40
>>>> metal roof made up of 4x8 metal sheets, I'd say a vertical would work
>>>> fine, but anything else nearby could be adversely affected. I also
>>>> wonder, at least in theory, if you wouldn't risk imperfect electrical
>>>> connections between shingles becoming harmonic-generating diodes, in
>>>> presence of a strong RF field.
>>> But... what about all the harmonic generating diodes from the chicken
>>> wire under the stucco, or the woven mesh of a chain link fence.
>>> I think the harmonics & diodes thing pops up more in situations where
>>> you have multiple transmitters in a single location, generating spurs
>>> that get into receivers at that same location.
>>> TowerTalk mailing list
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