For the VHF/UHF contest in September, there will be a group active locally...and running 1.2 GHz!
Since L-band is active on AO-92, and I have the equipment - but no antenna - I'm looking for an L--band antenna that I can use both terrestrially and for the birds.
My preference is for M^2, but both yagis on their website are a little larger than what I'm looking for - but they are still under consideration.
Does anyone have recommendations for another brand, or have an appropriate one for sale? (I wish I had bought some of those loop yagis which were prominently displayed in Ball Arena at Hamvention in the early 90s...)
(I'll be at Shelby NC Hamfest this Saturday (mostly at the AMSAT info table), in case someone is attending who has one and wants to bring it .)
Thanks
Philip N4HF
Try here
https://directivesystems.com/1200-mhz/23-cm-1250-1300-mhz/
Dave-KB1PVH
Sent from my Galaxy S9
On Mon, Aug 27, 2018, 3:35 PM Philip Jenkins n4hf.philip@gmail.com wrote:
For the VHF/UHF contest in September, there will be a group active locally...and running 1.2 GHz!
Since L-band is active on AO-92, and I have the equipment - but no antenna - I'm looking for an L--band antenna that I can use both terrestrially and for the birds.
My preference is for M^2, but both yagis on their website are a little larger than what I'm looking for - but they are still under consideration.
Does anyone have recommendations for another brand, or have an appropriate one for sale? (I wish I had bought some of those loop yagis which were prominently displayed in Ball Arena at Hamvention in the early 90s...)
(I'll be at Shelby NC Hamfest this Saturday (mostly at the AMSAT info table), in case someone is attending who has one and wants to bring it .)
Thanks
Philip N4HF _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
On 8/27/18 2:28 PM, Philip Jenkins wrote:
Does anyone have recommendations for another brand, or have an appropriate one for sale? (I wish I had bought some of those loop yagis which were prominently displayed in Ball Arena at Hamvention in the early 90s...)
You might also try this home-brew model:
https://www.mictronics.de/2011/07/1240mhz1280mhz-diy-helix-antenna/
--- Zach N0ZGO
Comet CYA-1216e is a nice antenna, and what I use, but a little pricey. DX Engineering and HRO carry them.
_______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Add in my recommendation for building your own. I made one with some old aluminum Radio Shack "ground wire" that I had laying around. Follow the calculator for radius and spacing as best you can, but don't sweat over the super fine detail. Helix antennas are inherently forgiving in construction, and are nice that they are circularly polarized which helps when working a spinning satellite. Both traits are in contrast to building a Yagi beam.
Anything inside the helix is invisible to the antenna; I used an aluminum rod, and heavy zip ties out to the wire turns. Tie one end around the central support, then use another (smaller one) to attach the wire to the "tail" of the first. Don't need to support every turn; just use enough to keep things kind of in place.
Greg KO6TH
Zach Metzinger wrote:
On 8/27/18 2:28 PM, Philip Jenkins wrote:
Does anyone have recommendations for another brand, or have an appropriate one for sale? (I wish I had bought some of those loop yagis which were prominently displayed in Ball Arena at Hamvention in the early 90s...)
You might also try this home-brew model:
https://www.mictronics.de/2011/07/1240mhz1280mhz-diy-helix-antenna/
--- Zach N0ZGO _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
I'll also add in my recommendation to build. For 2018 Field Day, I built a Kent Britain WA5JVB 1296 MHz Cheap Yagi. The plans can be found in the PDF document https://www.wa5vjb.com/yagi-pdf/cheapyagi.pdf.%C2%A0 It was easy to construct, if you are careful. Without tuning, I was able to get a 1.25 SWR on transmit frequency for AO-92 in L/v mode. I was able to make two successful QSOs during the one decent pass, for my location on Field Day that AO-92 was in L/v mode. Unfortunately, that pass occurred before Field Day officially started. Anyway, I felt validated that the antenna worked! Give it a try!
73,
Mac Cody / AE5PH
On 08/27/2018 05:19 PM, Greg D wrote:
Add in my recommendation for building your own. I made one with some old aluminum Radio Shack "ground wire" that I had laying around. Follow the calculator for radius and spacing as best you can, but don't sweat over the super fine detail. Helix antennas are inherently forgiving in construction, and are nice that they are circularly polarized which helps when working a spinning satellite. Both traits are in contrast to building a Yagi beam.
Anything inside the helix is invisible to the antenna; I used an aluminum rod, and heavy zip ties out to the wire turns. Tie one end around the central support, then use another (smaller one) to attach the wire to the "tail" of the first. Don't need to support every turn; just use enough to keep things kind of in place.
Greg KO6TH
Zach Metzinger wrote:
On 8/27/18 2:28 PM, Philip Jenkins wrote:
Does anyone have recommendations for another brand, or have an appropriate one for sale? (I wish I had bought some of those loop yagis which were prominently displayed in Ball Arena at Hamvention in the early 90s...)
You might also try this home-brew model:
https://www.mictronics.de/2011/07/1240mhz1280mhz-diy-helix-antenna/
--- Zach N0ZGO _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
There is more than one M2 antenna. I have had good success terrestrially with the shorter antenna. The elements are stamped from a single piece of metal, so it is simple to put together and you can't get the element spacing or alignment wrong. It is rear mount if that is an issue/advantage. DX Engineering will ship it to you rapidly:
https://www.dxengineering.com/search/department/antennas/part-type/vhf-uhf-b...
On Mon, Aug 27, 2018 at 9:57 PM Mac A. Cody maccody@att.net wrote:
I'll also add in my recommendation to build. For 2018 Field Day, I built a Kent Britain WA5JVB 1296 MHz Cheap Yagi. The plans can be found in the PDF document https://www.wa5vjb.com/yagi-pdf/cheapyagi.pdf. It was easy to construct, if you are careful. Without tuning, I was able to get a 1.25 SWR on transmit frequency for AO-92 in L/v mode. I was able to make two successful QSOs during the one decent pass, for my location on Field Day that AO-92 was in L/v mode. Unfortunately, that pass occurred before Field Day officially started. Anyway, I felt validated that the antenna worked! Give it a try!
73,
Mac Cody / AE5PH
On 08/27/2018 05:19 PM, Greg D wrote:
Add in my recommendation for building your own. I made one with some old aluminum Radio Shack "ground wire" that I had laying around. Follow the calculator for radius and spacing as best you can, but don't sweat over the super fine detail. Helix antennas are inherently forgiving in construction, and are nice that they are circularly polarized which helps when working a spinning satellite. Both traits are in contrast to building a Yagi beam.
Anything inside the helix is invisible to the antenna; I used an aluminum rod, and heavy zip ties out to the wire turns. Tie one end around the central support, then use another (smaller one) to attach the wire to the "tail" of the first. Don't need to support every turn; just use enough to keep things kind of in place.
Greg KO6TH
Zach Metzinger wrote:
On 8/27/18 2:28 PM, Philip Jenkins wrote:
Does anyone have recommendations for another brand, or have an appropriate one for sale? (I wish I had bought some of those loop yagis which were prominently displayed in Ball Arena at Hamvention in the early 90s...)
You might also try this home-brew model:
https://www.mictronics.de/2011/07/1240mhz1280mhz-diy-helix-antenna/
--- Zach N0ZGO _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership.
Opinions expressed
are solely those of the author, and do not reflect the official views of
AMSAT-NA.
Not an AMSAT-NA member? Join now to support the amateur satellite
program!
Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
This is what I use. For $35, hard to beat. I have no clue about its performance except that I have no difficulty using it to check in on a local 1296 ssb net and to work most every L Band AO92 pass. It is mounted on my 2M12 az/el boom.
https://www.ebay.com/itm/1-2GHz-12DBi-GSM-Yagi-Directional-Antenna-N-Female-...
YMMV
73s
Craig N6RSX
-----Original Message----- From: AMSAT-BB amsat-bb-bounces@amsat.org On Behalf Of Philip Jenkins Sent: Monday, August 27, 2018 12:29 PM To: AMSAT BB amsat-bb@amsat.org Subject: [amsat-bb] antenna for 1.2 Ghz
For the VHF/UHF contest in September, there will be a group active locally...and running 1.2 GHz!
Since L-band is active on AO-92, and I have the equipment - but no antenna - I'm looking for an L--band antenna that I can use both terrestrially and for the birds.
My preference is for M^2, but both yagis on their website are a little larger than what I'm looking for - but they are still under consideration.
Does anyone have recommendations for another brand, or have an appropriate one for sale? (I wish I had bought some of those loop yagis which were prominently displayed in Ball Arena at Hamvention in the early 90s...)
(I'll be at Shelby NC Hamfest this Saturday (mostly at the AMSAT info table), in case someone is attending who has one and wants to bring it .)
Thanks
Philip N4HF _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
(If this message is spam, please report it to IT Dept. Thank you.)
Thanks to all who have responded so far...this is gonna keep me busy for a while! :-)
Philip
On Mon, Aug 27, 2018 at 3:28 PM Philip Jenkins n4hf.philip@gmail.com wrote:
For the VHF/UHF contest in September, there will be a group active locally...and running 1.2 GHz!
Since L-band is active on AO-92, and I have the equipment - but no antenna - I'm looking for an L--band antenna that I can use both terrestrially and for the birds.
My preference is for M^2, but both yagis on their website are a little larger than what I'm looking for - but they are still under consideration.
Does anyone have recommendations for another brand, or have an appropriate one for sale? (I wish I had bought some of those loop yagis which were prominently displayed in Ball Arena at Hamvention in the early 90s...)
(I'll be at Shelby NC Hamfest this Saturday (mostly at the AMSAT info table), in case someone is attending who has one and wants to bring it .)
Thanks
Philip N4HF
participants (8)
-
Chris Thompson -
D. Craig Fox -
Dave Webb KB1PVH -
Greg D -
Mac A. Cody -
Philip Jenkins -
Robert Bankston -
Zach Metzinger