23 Jul
2020
23 Jul
'20
2:08 a.m.
On Wed, Jul 22, 2020 at 4:35 PM Ev Tupis via AMSAT-BB amsat-bb@amsat.org wrote:
I'm looking to experiment with dielectric lenses...and am looking for an inexpensive source).
There are a lot of papers online about making them from parrafin.