Lou,
I agree with you about wire antennas vs. verticals on 80, which is why I was
hoping there might be a Gap antenna that covers the higher frequencies (40
and above) without the lower ones. I haven't looked at the site in a while,
so I may be remembering things incorrectly. How tall is the tilt-over base?
Steve
----- Original Message -----
From: "Lou Kline" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Monday, March 19, 2007 22:39
Subject: Re: Cushcraft R8 Revisited
> Well, the GAP Titan comes as 80 through 10 meters, including 30, 17, and
> 12
> meters stock, so I'm thinking you are confusing this antenna with a
> different one. The only band it doesn't have between 80 and 10 meters is
> the 60 meter band. The capacitor gives you about a 50 khz slice of the 80
> meter band and you can get a capacitor for the specific slice that you
> prefer. Mine is 3.900 to 3.950 MHz.
>
> I primarily use it for a backup on 80 meters, as I prefer wire antennas on
> 80 and 40 meters. However, it does work, though not as well as the wire
> antennas for my purposes. It really shines on 30 meters and up.
>
> 73, de Lou K2LKK
>
>
> At 08:36 PM 3/19/2007 -0400, you wrote:
>>Lou,
>>
>>That tilt-over base seems like a neat idea. How tall is it?
>>
>>Would I have to worry about that capacitor if I don't get the add-on 80
>>meter kit? I'm primarily interested in a vertical for bands above 40
>>meters. I might even like a vertical on 40, but not having one wouldn't
>>disappoint me all that much.
>>
>>Steve
>>
>>----- Original Message -----
>>From: "Lou Kline" <[log in to unmask]>
>>To: <[log in to unmask]>
>>Sent: Sunday, March 18, 2007 13:24
>>Subject: Re: Cushcraft R8 Revisited
>>
>>
>> > Hi Steve.
>> >
>> > I think you'll be happy with the performance on the upper bands with
>> > that
>> > antenna. It's achilles heel is that it is tricky to tune on 40 meters,
>> > but
>> > is a good antenna otherwise. It is, however, quite involved to
>> > assemble,
>> > and it is a big and heavy antenna, so you'll want to give some serious
>> > thought to how you want to mount it. I used the tilt-over base that
>> > GAP
>> > makes for the Titan, and mixed up four 80 pound bags of concrete to
>> > mount
>> > the base in. The base, itself, is very ruggedly constructed.
>> >
>> > The other difficulty that I had was that I had a capacitor that plugs
>> > into
>> > the top of the antenna fail, making it impossible to load on 80
>> > meters. When I called GAP Technical Support, I was told that it was a
>> > common failure that is usually caused by rain penetrating the weather
>> > boot
>> > on the top of the antenna. When I pulled the antenna down, I found out
>> > that sure enough the weather boot had broken down leaving the capacitor
>> > exposed. A 35 mm film can was just the right size to fit over the end
>> > of
>> > the antenna, and once secured and sealed up, I've had no further
>> > trouble
>> > with it.
>> >
>> > 73, de Lou K2LKK
>> >
>> >
>> >
>> > At 11:18 AM 3/18/2007 -0400, you wrote:
>> >>Lou,
>> >>
>> >>I've been thinking about a Gap for a while now, but want to know how
>> >>well
>> >>it
>> >>works before I rush out and buy one. I'm particularly interested in
>> >>its
>> >>performance on 20 meters and above. At present, I'm using a Cobra
>> >>Ultralite
>> >>Senior, which is an all-band folded dipole.
>> >>
>> >>Steve
>> >>
>> >>----- Original Message -----
>> >>From: "Lou Kline" <[log in to unmask]>
>> >>To: <[log in to unmask]>
>> >>Sent: Saturday, March 17, 2007 17:43
>> >>Subject: Re: Cushcraft R8 Revisited
>> >>
>> >>
>> >> > Hi.
>> >> >
>> >> > That depends upon the vertical antenna. The ones that are supposed
>> >> > to
>> >> > act
>> >> > as an electrical quarterwave do require a ground or radials, but a
>> >> > few
>> >> > are
>> >> > designed to function electrically as a vertical dipole, and these do
>> >> > not
>> >> > require a radial system. For example, I run the GAP Titan, which
>> >> > uses
>> >> > this
>> >> > design and does not need radials.
>> >> >
>> >> > The Cushcraft R5, R7, and R8 antennas also fall into this category
>> >> > and
>> >> > do
>> >> > not require radials.
>> >> >
>> >> > 73, de Lou K2LKK
>> >> >
>> >> > At 01:18 PM 3/17/2007 -0400, you wrote:
>> >> >>Hi John;
>> >> >>
>> >> >>I don't know much about vertical antennas however, the ground
>> >> >>radials
>> >> >>are
>> >> >>the other half of the antenna.
>> >> >>
>> >> >>Without ground radials, a vertical antenna is not real effective.
>> >> >>
>> >> >>73 De Anthony W2AJV
>> >> >>[log in to unmask]
>> >> >>ECHOLINK NODE NUMBER: 74389
>> >> >>
>> >> >>----- Original Message -----
>> >> >>From: "John Vernaleken" <[log in to unmask]>
>> >> >>To: <[log in to unmask]>
>> >> >>Sent: Saturday, March 17, 2007 1:04 PM
>> >> >>Subject: [BLIND-HAMS] Cushcraft R8 Revisited
>> >> >>
>> >> >>
>> >> >>Since I do not have room for something like a G5RV or Carolina
>> >> >>Windom I
>> >> >>a
>> >> >>m
>> >> >>thinking about a Cushcraft R8. I would prefer not to have ground
>> >> >>radials
>> >> >>,
>> >> >>that is why I am looking at the R8.
>> >> >>Any feedback would be helpfull.
>> >> >>
>> >> >>Thanks
>> >> >>John KC2QJB
>> >> >>
>> >> >>
>> >> >>
>> >> >>--
>> >> >>No virus found in this incoming message.
>> >> >>Checked by AVG Free Edition.
>> >> >>Version: 7.5.446 / Virus Database: 268.18.13/725 - Release Date:
>> >> >>3/17/2007
>> >> >>12:33 PM
>> >> >
>> >> > Louis Kim Kline
>> >> > A.R.S. K2LKK
>> >> > Home e-mail: [log in to unmask]
>> >> > Work e-mail: [log in to unmask]
>> >> > Work Telephone: (585) 697-5753
>> >> >
>> >> >
>> >> >
>> >>
>> >>
>> >>
>> >>--
>> >>No virus found in this incoming message.
>> >>Checked by AVG Free Edition.
>> >>Version: 7.5.446 / Virus Database: 268.18.13/726 - Release Date:
>> >>3/18/2007
>> >>3:34 PM
>> >
>> > Louis Kim Kline
>> > A.R.S. K2LKK
>> > Home e-mail: [log in to unmask]
>> > Work e-mail: [log in to unmask]
>> > Work Telephone: (585) 697-5753
>> >
>> >
>> >
>>
>>
>>
>>--
>>No virus found in this incoming message.
>>Checked by AVG Free Edition.
>>Version: 7.5.446 / Virus Database: 268.18.14/727 - Release Date: 3/19/2007
>>11:49 AM
>
> Louis Kim Kline
> A.R.S. K2LKK
> Home e-mail: [log in to unmask]
> Work e-mail: [log in to unmask]
> Work Telephone: (585) 697-5753
>
>
>
|
