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
Hello,
Anyone remember Ed Juge? I worked for him back when he had his electronics
shop on the South Freeway in Fort Worth. His wife got a new car, a little
Porsche 911 and she wanted a Ham radio installed so she could use the local
.94/10-4 repeater, Ed knew better than to try and install it on
A number of years ago... an installer I knew drilled a cell phone
mount into the transmission hump of a Jag... caught the Jag's wire
harness and shorted/burned the entire car out when he hit the key.
T'was a $4,000 + cost dealer fix...
cheers,
skipp
Paul Finch [EMAIL PROTECTED] 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 catalog number 14023. It's a lot
--- In Repeater-Builder@yahoogroups.com, Ken Arck [EMAIL PROTECTED] wrote:
At 07:29 AM 2/20/2007, you wrote:
I have friends That think drilling a hole in a car or truck new or
even a used one is a sin . I try not to but if necessary to get
Antenna on ill go for the drill and Greenlee punch
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
--- In Repeater-Builder@yahoogroups.com, skipp025 [EMAIL PROTECTED]
wrote:
If you are going to use this Antenna to work on and test radio's
need a split of 135 to 174 I don't that will be possible, Most
antenna will cover that range but you have to trim them for a certain
Freq some are
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
--- In Repeater-Builder@yahoogroups.com, Yahoo [EMAIL PROTECTED] wrote:
There are a number of old post on this subject. Take a look at the
4 bay
dipole antennas from Antenex (made by Bluewave). VERY broadband.
As for
whether or not they are expensive is a matter of personal opinion.
Jeff
--- 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 resonance is NOT a
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 10 db, and which
And does not turn into toothpicks when struck by lightning!
Paul
-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Laryn Lohman
Sent: Friday, February 16, 2007 12:29 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Re:
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 a
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
Hi Jed.
If you're not interested in a lot of gain, try a discone. They're about as
broadbanded as you can get, and not too expensive. I bought one from the
local ham shop in Newington for less than $100. It's good for 2 meters and
up. I've seen some discones designed for scanners that
it's also not a stacked so bear little relevence to the matter
Trying to understand what stacked has to do with the discussion...
There is little or no
automatic penalty for using a non-resonant antenna.
just some efficiency
Barry, try to understand that a resonant antenna is not
I have a rubber duck that outperforms three different MFR's discones.
Joe M.
Rod Lane wrote:
Hi Jed.
If youre not interested in a lot of gain, try a discone. Theyre
about as broadbanded as you can get, and not too expensive. I bought
one from the local ham shop in Newington for
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:
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 to
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
Sinclair makes what you're looking for... but you won't like the
price... and if their customer service is still as bad as my last
experience you won't enjoy trying to resolve any problems that
might pop up.
cheers,
skipp
Jed Barton [EMAIL PROTECTED] wrote:
Hey guys,
I need some
Yep...
About $10K to $15K worth of crap VHF Antennas bad... Doesn't keep
me from buying more... just not the model/type we bought with the
problems that have yet to be resolved. I only get a chance to
grind on them about it at IWCE each year... every year.
Overall Sinclair makes and made
Re: Antennas that work both in commercial and amateur
If you find one, it would have to be pretty low gain (like Unity).
Not really... but as the nature of the bandwidth beast is dealt
with... the 4 dipole antenna gain is not super high (about ~3db).
The dipole antenna I have the problem
--- In Repeater-Builder@yahoogroups.com, mch [EMAIL PROTECTED] wrote:
If you find one, it would have to be pretty low gain (like Unity).
Joe M.
Not necessarily Joe. I have a ASPB-602 which is an Antenna
Specialists number. It is listed in a DB Products catalog from 1996,
and is rated for
I've had issues with the customer service folks at Sinclair also. Will
avoid them in the future when I can. Had a circulator that showed up
and can't be tuned with the normal adjustments to get it back on track.
After several excuses of needing a tax number and then some other
--- 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 broadband gain. The only
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 .
From: Laryn Lohman [EMAIL PROTECTED]
Reply-To: Repeater-Builder@yahoogroups.com
To:
--- In Repeater-Builder@yahoogroups.com, Barry C' [EMAIL PROTECTED] wrote:
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 .
OK, within
--- 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 -
---
44 matches
Mail list logo
