Greg,
I would keep the one that works the best.
I have been disappointed in the performance of long boom Yagi's for UHF.
Resistance loss in the elements often reduces the gain by several dB over
calculated gain. Also they are very narrow band, the helix is good for an
octave.
Art,
KC6UQH
Hi Greg et al
I have been partial with the helix for satellites. I run 10W to a 16 turn
helix through 40 feet of LMR-400. I rarely have an issue getting into AO-51.
I believe AO -51 is our only L band bird, I try to exercise my gear when the
opportunity is there. I experience very
M2 makes a 35 element 1296 MHz yagi, on about a 6' boom.
individual elements are insulated thru the boom with keepers.
Folded dipole driven element.
I used 2 each stacked vertically for AO-40. Yes, they are pointy.
Stan, W1LE Cape Cod FN41sr
On 9/22/2010 1:52 AM, Art McBride wrote:
- Original Message -
From: Greg D. ko6th_g...@hotmail.com
To: amsat-bb@amsat.org
Sent: Wednesday, September 22, 2010 7:03 AM
Subject: [amsat-bb] Antenna Opinions?
Hi folks,
The Find was a 35 element 1296mHz antenna, well built and in excellent
condition. Linearly polarized,
I installed one of these a few months ago, in place of my 20-turn Wimo
helix. Both are nice antennas, but I'll give the edge to the M2 yagi
(more gain and it mounts balanced on the elevation boom). I have
mine with vertical polarity. Since AO-51 is linear on L-band, it
shouldn't matter--but
- Original Message -
From: Greg D. ko6th_g...@hotmail.com
To: amsat-bb@amsat.org
Sent: Wednesday, September 22, 2010 7:03 AM
Subject: [amsat-bb] Antenna Opinions?
Hi folks,
The Find was a 35 element 1296mHz antenna, well built and in excellent
condition. Linearly polarized,
Okay, my 35 ele M2 is about 10 feet long:
http://www.m2inc.com/index2.html
They do sell a 22 element version that is about 6' long:
http://www.m2inc.com/index2.html
Mark N8MH
On Wed, Sep 22, 2010 at 9:10 AM, Mark L. Hammond marklhamm...@gmail.com wrote:
I installed one of these a few months
I use a Directive Systems 25 element loop yagi and it works great for AO-51 L
band. http://www.directivesystems.com I'm feeding it with 10 watts via 35
feet of LMR400. Directive Systems antennas are very well built and less
expensive than some other popular brands.
Steve N5EN
---
Greg,
My two cents is that AO-51 seems to be very sensitive on the L band
receive, so a decent antenna will get in fine. I have been using RHCP on
my uplink, a 31 turn homebrew helix modeled after the VE3NPC, and I have
not experienced any fading problems on uplink. My choice then is to opt
for
is not too bad. My rotor is good to 6 degrees
(that's the clicker increment), and the one beacon I can barely hear way off in
the distance can be heard +/- about 2 clicks.
Greg KO6TH
Date: Wed, 22 Sep 2010 08:50:05 -0400
From: stanw...@verizon.net
To: amsat-bb@amsat.org
Subject: [amsat-bb] Re
Hi Domenico,
The length sounds about right (I didn't measure it, but it's longer than my
garage 8 foot ceiling is high). But searching for pictures of the Tonna
antenna, I'm not seeing one that matches. The Tonna antennas have a different
mounting (a parallel bar below the boom), and
11 matches
Mail list logo
