[A-DX] SWRG#223

Roger
Samstag, 25. September 2021, 10:09 Uhr

http://www.rhci-online.net/radiogram/SW_Radiogram_2021-09-23.htm#SWRG


  1:44 MFSK32: Program preview (now)
  2:47 Frequency restrictions in Shielded Zones of the Moon
  6:17 MFSK64: Satellite swarms vs. natural constellations
12:00 This week's images
28:22 MFSK32: Closing announcements



u.a.:
Proposal to ban all 300-2000 MHz transmissions in the Shielded
Zones of the Moon

September 22, 2021

Inside GNSS reports on the proposal to ban all radio
transmissions between 300 MHz and 2000 MHz in the area designated
the Shielded Zone of the Moon (SZM), this would also be
applicable to Mars

The spectrum would instead be used for radio astronomy
operations, this would mean the Amateur Satellite Service
allocations at 435 MHz and 1260 MHz would no longer be available
to spacecraft in Lunar orbit such as Lunar-OSCAR 93 and
Lunar-OSCAR 94 (Longjiang-1 and 2), see
https://amsat-uk.org/2018/05/19/dslwp-satellites-lunar-orbit/

.....

Read the full story at
https://insidegnss.com/the-shielded-zone-of-the-moon-protecting-radio-astronomy-from-rf-interference/

.....
Our art of the week is this artistic photo sent to us by Georg in
Germany. It's the last sunset of summer 2021, near Aachen,
September 22.

Sending Pic:222x129C;
https://www.dropbox.com/s/of0e9ei9mq36sro/pic_2021-09-23_235810z-9.png?dl=0


vermutlich von Dr. Georg Niepel/Stolberg bei Aachen:
http://www.radio-hobby.de/
updated/bearbeitet April 22, 2021
allerdings nur dieser eine Satz:
"Addendum 2021: Die Antenne ist nach wie vor in fast täglicher 
Benutzung. Sie hat sich sehr bewährt."

Der zuletzt aktualisierte Artikel (von 2012) zu der DAB+Außenantenne & 
Verstärker basiert wohl auf diesem Bausatz:
https://quasarelectronics.co.uk/Item/smart-kit-1084-high-gain-tv-aerial-amplifier


roger