Re: [BVARC] Satellite yagi???
Larry Brand kb5pnu http://www.antennapartsoutlet.com/index.html . If this helps . On Wed, Sep 9, 2020 at 2:40 PM Bruce via BVARC wrote: > buy the leo pack by m2 from amsat. you get a discount. i have had the leo > pack since they came out. if you would like to buy my old sat antennas, > 15x2 70cm circular polarized and 11x2 2m circular polarized i am willing > to let them go. > > 73...bruce > > Sent from my iPhone > > On Sep 9, 2020, at 1:05 PM, Neal Naumann via BVARC > wrote: > > > This is something I once started and haven't finished yet.. > > Go to m2inc.com. Download the assembly manual for the 436CP16 and the > 2MCPA. These are nice antennas, but I don't have a $600 antenna budget. > The manual gives you all the dimensions. I picked up a few TV antennas > from the curb around the neighborhood. The elements are much thicker than > the M2 elements, but that's OK. The old TV antennas yielded a usable boom > for the 436MHz array. I drilled out the rivets to remove the existing > elements. I drilled holes slightly larger than the harvested elements in > the boom per M2 dimensions (you might want to used a drill press here). I > have cut all the elements per M2 dimensions (get a cheap digital caliper) > and plan to put a piece of heat shrink on the center of the elements and > then epoxy them in place on the boom. I haven't quite figured out yet how > I will do the driven elements yet, but it will be close to M2's method > except possibly a plastic project box at the feed points. if you get this > far, you will have to do some calculating to make a phasing harness with > some 75-ohm coax. The two feed points are physically 90 degrees apart so > nothing fancy there - just an easy way to get circular polarization. I > plan to do about the same for the 2-meter antenna, but I need to "harvest" > some more TV antennas. Once upon a time, nice diameter aluminum welding > rods were available at the hardware store and were 36 inches long. 36 > inches is not quite enough for the low end of 2 meters, but maybe two could > be spliced together. The TV antenna plastic element to boom mount might > also be recycled and a jumper put across to join the two halves of the > element. > > Of course with this satellite array, you would need an az/el rotator and > tracking program, and that's another story, but you don't need to spend > $1000 on that either. > > Good luck! > 73 > > Neal N5EN > > Brazos Valley Amateur Radio Club > > BVARC mailing list > BVARC@bvarc.org > http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org > > Brazos Valley Amateur Radio Club > > BVARC mailing list > BVARC@bvarc.org > http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org > Brazos Valley Amateur Radio Club BVARC mailing list BVARC@bvarc.org http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org
Re: [BVARC] Satellite yagi???
This is something I once started and haven't finished yet... Go to m2inc.com. Download the assembly manual for the 436CP16 and the 2MCPA. These are nice antennas, but I don't have a $600 antenna budget. The manual gives you all the dimensions. I picked up a few TV antennas from the curb around the neighborhood. The elements are much thicker than the M2 elements, but that's OK. The old TV antennas yielded a usable boom for the 436MHz array. I drilled out the rivets to remove the existing elements. I drilled holes slightly larger than the harvested elements in the boom per M2 dimensions (you might want to used a drill press here). I have cut all the elements per M2 dimensions (get a cheap digital caliper) and plan to put a piece of heat shrink on the center of the elements and then epoxy them in place on the boom. I haven't quite figured out yet how I will do the driven elements yet, but it will be close to M2's method except possibly a plastic project box at the feed points. if you get this far, you will have to do some calculating to make a phasing harness with some 75-ohm coax. The two feed points are physically 90 degrees apart so nothing fancy there - just an easy way to get circular polarization. I plan to do about the same for the 2-meter antenna, but I need to "harvest" some more TV antennas. Once upon a time, nice diameter aluminum welding rods were available at the hardware store and were 36 inches long. 36 inches is not quite enough for the low end of 2 meters, but maybe two could be spliced together. The TV antenna plastic element to boom mount might also be recycled and a jumper put across to join the two halves of the element. Of course with this satellite array, you would need an az/el rotator and tracking program, and that's another story, but you don't need to spend $1000 on that either. Good luck! 73 Neal N5EN Brazos Valley Amateur Radio Club BVARC mailing list BVARC@bvarc.org http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org
Re: [BVARC] Satellite yagi???
Google 2m tape measure antenna. I used the cheap tape measure from harbor freight. Easy and fun project. Sent via the Samsung Galaxy S8 Active, an AT 5G Evolution capable smartphone Original message From: Richard Bonica via BVARC Date: 9/8/20 12:39 PM (GMT-06:00) To: John Pate , BRAZOS VALLEY AMATEUR RADIO CLUB Cc: Richard Bonica , Jeff Greer Subject: Re: [BVARC] Satellite yagi??? Thank you all, I did not realize that there were that many hams into satellite comms. I am looking for a project for my son and I to do and thought this was an uncommon thing to try. Surprise me. I will try the amsat site and build from ground up. But do not want to seem ungrateful to anyone, and thank you all. Might be a bit of a learning treat for me too. On 9/8/2020 11:54 AM, John Pate wrote: I have a Elk sitting in the garage I’ll give you Sent from my iPhone On Sep 8, 2020, at 11:37 AM, Jeff Greer via BVARC wrote: This may prove useful: https://www.amsat.org/cheap-and-easy-yagi-satellite-antennas/ From: BVARC on behalf of Richard Bonica via BVARC Sent: Tuesday, September 8, 2020 11:02 AM To: Martin Blaise via BVARC Cc: Richard Bonica Subject: [BVARC] Satellite yagi??? Has anyone build a Yagi to reach satellites? If so, where could I get good plans to do a DIY on a budget? Thank you in advance... Richard Bonica -- This email has been checked for viruses by AVG. https://www.avg.com Brazos Valley Amateur Radio Club BVARC mailing list BVARC@bvarc.org http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org Brazos Valley Amateur Radio Club BVARC mailing list BVARC@bvarc.org http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org This email has been checked for viruses by AVG antivirus software. www.avg.com Brazos Valley Amateur Radio Club BVARC mailing list BVARC@bvarc.org http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org
Re: [BVARC] Satellite yagi???
Thank you all, I did not realize that there were that many hams into satellite comms. I am looking for a project for my son and I to do and thought this was an uncommon thing to try. Surprise me. I will try the amsat site and build from ground up. But do not want to seem ungrateful to anyone, and thank you all. Might be a bit of a learning treat for me too. On 9/8/2020 11:54 AM, John Pate wrote: I have a Elk sitting in the garage I’ll give you Sent from my iPhone On Sep 8, 2020, at 11:37 AM, Jeff Greer via BVARC wrote: This may prove useful: https://www.amsat.org/cheap-and-easy-yagi-satellite-antennas/ *From:* BVARC on behalf of Richard Bonica via BVARC *Sent:* Tuesday, September 8, 2020 11:02 AM *To:* Martin Blaise via BVARC *Cc:* Richard Bonica *Subject:* [BVARC] Satellite yagi??? Has anyone build a Yagi to reach satellites? If so, where could I get good plans to do a DIY on a budget? Thank you in advance... Richard Bonica -- This email has been checked for viruses by AVG. https://www.avg.com Brazos Valley Amateur Radio Club BVARC mailing list BVARC@bvarc.org http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org Brazos Valley Amateur Radio Club BVARC mailing list BVARC@bvarc.org http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org Brazos Valley Amateur Radio Club BVARC mailing list BVARC@bvarc.org http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org
Re: [BVARC] Satellite yagi???
I have a Elk sitting in the garage I’ll give you Sent from my iPhone > On Sep 8, 2020, at 11:37 AM, Jeff Greer via BVARC wrote: > > > This may prove useful: > https://www.amsat.org/cheap-and-easy-yagi-satellite-antennas/ > > From: BVARC on behalf of Richard Bonica via BVARC > > Sent: Tuesday, September 8, 2020 11:02 AM > To: Martin Blaise via BVARC > Cc: Richard Bonica > Subject: [BVARC] Satellite yagi??? > > Has anyone build a Yagi to reach satellites? If so, where could I get > good plans to do a DIY on a budget? > > Thank you in advance... > > Richard Bonica > > > -- > This email has been checked for viruses by AVG. > https://www.avg.com > > > > Brazos Valley Amateur Radio Club > > BVARC mailing list > BVARC@bvarc.org > http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org > > Brazos Valley Amateur Radio Club > > BVARC mailing list > BVARC@bvarc.org > http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org Brazos Valley Amateur Radio Club BVARC mailing list BVARC@bvarc.org http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org
Re: [BVARC] Satellite yagi???
This may prove useful: https://www.amsat.org/cheap-and-easy-yagi-satellite-antennas/ From: BVARC on behalf of Richard Bonica via BVARC Sent: Tuesday, September 8, 2020 11:02 AM To: Martin Blaise via BVARC Cc: Richard Bonica Subject: [BVARC] Satellite yagi??? Has anyone build a Yagi to reach satellites? If so, where could I get good plans to do a DIY on a budget? Thank you in advance... Richard Bonica -- This email has been checked for viruses by AVG. https://www.avg.com Brazos Valley Amateur Radio Club BVARC mailing list BVARC@bvarc.org http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org Brazos Valley Amateur Radio Club BVARC mailing list BVARC@bvarc.org http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org
[BVARC] Satellite yagi???
Has anyone build a Yagi to reach satellites? If so, where could I get good plans to do a DIY on a budget? Thank you in advance... Richard Bonica -- This email has been checked for viruses by AVG. https://www.avg.com Brazos Valley Amateur Radio Club BVARC mailing list BVARC@bvarc.org http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org
