some audio - samples of my moonechos
what is possible with EME, I made moonecho tests
on 70cm between my 10m dish with
31dBi, and a dual-dipole antenna
with 10dBi, widely used as a
feed for a dish. The audio samples below
demonstrate the signal quality when transmitting
with the big dish and receiving with the small
antenna ( and vice versa).
|On Nov.28th 1999 I worked
DL9KR (O/O) on random within 5 minutes, using the
NBS antenna. Maybe this is the smallest antenna
ever used to make a 2-way random EME QSO with a
success I wanted to try similar on 23cm.
A cone was soldered to a circular W2IMU horn,
resulting in 1 meter horn diameter
and a gain of about 20dBi.
Here you can see the ´big´ horn made
of mesh wire. It is 2.3m long, the picture below
shows this ´EME´-antenna in it´s operating
position: feedpoint indoors, and the cone looking
outside through the shack window.
|On March 19th 2000, I worked
on 23cm 10 stations random within 3 hours,
transmitting with this small antenna. Highlight
was the QSO with ZS6AXT, who is using a 5 meter
dish. I could still hear my moonechos receiving
with the big dish, when I transmitted with the 1
meter horn and only 50 Watts.