Larry Brand kb5pnu http://www.antennapartsoutlet.com/index.html . If this helps .
On Wed, Sep 9, 2020 at 2:40 PM Bruce via BVARC <[email protected]> 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 <[email protected]> > 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 > [email protected] > http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org > ________________________________________________ > Brazos Valley Amateur Radio Club > > BVARC mailing list > [email protected] > http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org >
________________________________________________ Brazos Valley Amateur Radio Club BVARC mailing list [email protected] http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org
