Gary Schafer wrote:
Measured on their range-they used to be based in Cleveland, and my
father was one of the designers.
(anybody here remember the PRO-27JR 27Mhz antenna? Or the original 4BTV?)
--
Jim Barbour
WD8CHL
With all due respect to your father Jim, I think that 4 db of gain is
Jeff DePolo wrote:
There are a lot of unknown variables here, including, but not limited to the
size of the ground plane the antennas were mounted on, their heights above
the ground plane, the method of coupling to the ground plane (direct, mag
mount, etc.), matching networks' efficiencies,
Oh, and 'mag mounts' didn't really exist much then...you
either mounted
the antenna in a hole, or you didn't have an antenna.
Ah, the gold old days, when men armed with a drill and Greenlee punch
thought nothing of putting holes in their roofs, fearing not the Wrath of
Wife.
Jeff DePolo wrote:
Oh, and 'mag mounts' didn't really exist much then...you
either mounted
the antenna in a hole, or you didn't have an antenna.
Ah, the gold old days, when men armed with a drill and Greenlee punch
thought nothing of putting holes in their roofs, fearing not the Wrath of
At 07:29 AM 2/20/2007, you wrote:
Ah, the gold old days, when men armed with a drill and Greenlee punch
thought nothing of putting holes in their roofs, fearing not the Wrath of
Wife.
---When I bought my new Mustang last year, within 24 hours of
bringing it home, I installed a genuine NMO
!
Paul
-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Ken Arck
Sent: Tuesday, February 20, 2007 9:42 AM
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] Re: Antennas that work both in commercial
and amateur
At 07:29
.
73, Eric Lemmon WB6FLY
-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Ken Arck
Sent: Tuesday, February 20, 2007 7:42 AM
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] Re: Antennas that work both in commercial
At 2/20/2007 18:08, you wrote:
Ken,
I, too, used a Greenlee hole punch before I discovered the Ripley HSK-19
Antenna Hole Saw. The description in the catalog states: Ripley hole saw
for installing permanent mount antennas. Makes 3/4 hole and limits depth
to 1/8... It is sold by Tessco as
ocwarren2000 wrote:
I've been watching this topic and cannot recommend the half
wave dipole bay antennas as not really efficient gain wise for what
one gets for the effort..
The Station Master series has been mentioned, which has good
omnidirectional gain, in the order of some
Laryn Lohman wrote:
--- In Repeater-Builder@yahoogroups.com, Barry C' [EMAIL PROTECTED] wrote:
I presume its some sort of stacked arrangment , in chich case it
will make
that gain at resonance ,
Yes, the ASPB602 is four stacked dipoles, just like the DB224. My
point again is that
-Original Message-
From: Repeater-Builder@yahoogroups.com [mailto:Repeater-
[EMAIL PROTECTED] On Behalf Of Jim B.
Sent: Monday, February 19, 2007 12:42 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Re: Antennas that work both in commercial
and amateur
Right-slightly OT, for a mobile antenna, you will find that you can
squeak out a bit more gain by using a .64-wavelength whip instead of a
pure 5/8-wave (.625)
In the late 60's/early 70's, the NewTronics BBL series VHF gain antennas
were rated at an honest 4dB gain-and did it. The A/S VHF
-Original Message-
From: Repeater-Builder@yahoogroups.com [mailto:Repeater-
[EMAIL PROTECTED] On Behalf Of Jim B.
Sent: Monday, February 19, 2007 4:32 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Re: Antennas that work both in commercial
and amateur
Measured on their range-they used to be based in Cleveland, and my
father was one of the designers.
(anybody here remember the PRO-27JR 27Mhz antenna? Or the
original 4BTV?)
--
Jim Barbour
WD8CHL
With all due respect to your father Jim, I think that 4 db of gain is
wishful
-Original Message-
From: Repeater-Builder@yahoogroups.com [mailto:Repeater-
[EMAIL PROTECTED] On Behalf Of Barry C'
Sent: Friday, February 16, 2007 11:04 PM
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] Re: Antennas that work both in commercial
and amateur
-Original Message-
From: Repeater-Builder@yahoogroups.com [mailto:Repeater-
[EMAIL PROTECTED] On Behalf Of Barry C'
Sent: Friday, February 16, 2007 10:59 PM
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] Re: Antennas that work both in commercial
and amateur
Well lets look at the riddle , swinging a radiator acree 20 or 30 megs of
bandwidth it will tune and still radiate but will it have appreciable gain
away from certain design points?
I think not .
Laryn K8TVZ
where did I mention resonance ?
resonance of course being point normally
: Antennas that work both in commercial and
amateur
I've been watching this topic and cannot recommend the half
wave dipole bay antennas as not really efficient gain wise for what
one gets for the effort..
The Station Master series has been mentioned, which has good
From: Gary Schafer [EMAIL PROTECTED]
Reply-To: Repeater-Builder@yahoogroups.com
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] Re: Antennas that work both in commercial
and amateur
Date: Fri, 16 Feb 2007 10:40:47 -0500
Well lets look at the riddle , swinging
From: Laryn Lohman [EMAIL PROTECTED]
Reply-To: Repeater-Builder@yahoogroups.com
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Re: Antennas that work both in commercial and
amateur
Date: Fri, 16 Feb 2007 17:33:49 -
--- In Repeater-Builder@yahoogroups.com, Barry C' [EMAIL
--- Barry C' [EMAIL PROTECTED] wrote:
Yes, the ASPB602 is four stacked dipoles, just like the DB224. My
point again is that resonance is NOT a requirement for an effective
and efficient antenna. The wider frequency coverage for this
antenna
is likely because the dipoles are
-Original Message-
From: Repeater-Builder@yahoogroups.com [mailto:Repeater-
[EMAIL PROTECTED] On Behalf Of Barry C'
Sent: Friday, February 16, 2007 6:15 PM
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] Re: Antennas that work both in commercial
and amateur
@yahoogroups.com
Subject: [Repeater-Builder] Re: Antennas that work both in commercial and
amateur
--- In Repeater-Builder@ mailto:Repeater-Builder%40yahoogroups.com
yahoogroups.com, skipp025 [EMAIL PROTECTED]
wrote:
If you are going to use this Antenna to work on and test radio's
need a split
--
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Maxwell D Pratt
Sent: Friday, February 16, 2007 11:13 AM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Re: Antennas that work both in commercial
and amateur
From: Gary Schafer [EMAIL PROTECTED]
Reply-To: Repeater-Builder@yahoogroups.com
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] Re: Antennas that work both in commercial
and amateur
Date: Fri, 16 Feb 2007 19:31:17 -0500
-Original Message-
From: Repeater
From: Laryn Lohman [EMAIL PROTECTED]
Reply-To: Repeater-Builder@yahoogroups.com
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Re: Antennas that work both in commercial and
amateur
Date: Sat, 17 Feb 2007 03:45:51 -
it's also not a stacked so bear little relevence
At 2/15/2007 19:10, you wrote:
--- In Repeater-Builder@yahoogroups.com, Barry C' [EMAIL PROTECTED] wrote:
I would have to suggest any copper that has a huge bandwidth will
have gain
on only one tuned area ,
Well, actually no. Resonance is not a requirement for an effective
antenna with
At 2/16/2007 18:26, you wrote:
I have a rubber duck that outperforms three different MFR's discones.
If I understand it correctly, the discone is nothing more than a ground
plane-imaged 3D bowtie, IOW a very simple design. What could go wrong?
Bob NO6B
, really, that bad?
_
From: skipp025 [mailto:[EMAIL PROTECTED]
Sent: Thursday, February 15, 2007 3:36 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Re: Antennas that work both in
commercial and
amateur
Sinclair makes what you're looking for... but you won't
-Builder@yahoogroups.com
Subject: [Repeater-Builder] Re: Antennas that work both in commercial and
amateur
Date: Fri, 16 Feb 2007 03:10:59 -
--- In Repeater-Builder@yahoogroups.com, Barry C' [EMAIL PROTECTED] wrote:
I would have to suggest any copper that has a huge bandwidth will
have gain
--- Barry C' [EMAIL PROTECTED] wrote:
From: Laryn Lohman [EMAIL PROTECTED]
Reply-To: Repeater-Builder@yahoogroups.com
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Re: Antennas that work
both in commercial and
amateur
Date: Fri, 16 Feb 2007 05:04:02 -
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