[amsat-bb] L band gear

EDWARD KROME e.krome at comcast.net
Thu May 14 19:01:13 UTC 2020


That's an interesting site. The hb antenna I mentioned using is similar to the dl6wu 12 el with folded dipole. A design that caught my eye was the piston trimmer gamma match arrangement. Clever. Simple. Worth a try. Be interesting to see what the VNA thinks about it.
Thanks!
Ed K9EK

> On May 14, 2020 at 2:45 PM Zach Metzinger via AMSAT-BB <amsat-bb at amsat.org> wrote:
> 
> 
> On 05/14/20 13:41, Greg D wrote:
> > You'll also need an antenna.  Surprised that's not been mentioned in
> > this drift into homebrewing...
> > 
> > Before I got my 30 element Beam at a swap meet, I was using a homemade
> > 17 turn Helix.  It was easy to make, and worked quite well.  I would not
> > say that the beam was any better, especially since the helix is
> > circularly polarized.  I still have it, and may swap it back into
> > service some day.
> 
> Yep! Plenty of designs out there, should one want to build vs buy:
> 
> https://vk1sotaon23cm.wordpress.com/23-cm-antennas/
> 
> One of these cheap, perhaps-not-perfect-but-good-enough VNAs would help 
> tune it up:
> 
> https://www.tindie.com/products/hcxqsgroup/nanovna-v2/
> 
> (I have the v1, which is good up to ~900 MHz, and have been pleased with 
> it.)
> 
> --- Zach
> N0ZGO
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