hamradio

Space satellite company is using #hamradio bands without permission, and now is looking to take away the 430 to 440Mhz band for its exclusive use.

AMSAT:

"Despite not being amateur satellites the first five commercial satellites use these amateur frequencies for telemetry links with a 50 kHz bandwidth: 430.5, 432.3, 434.1, 435.9 and 439.5 MHz..... AST SpaceMobile are planning to launch a further 243 satellites .... In February they submitted a request to the FCC Space Bureau for use of the amateur band worldwide"

(Update: "Note that the last day to comment is Monday July 21.")

https://amsat-uk.org/2025/06/26/use-of-430-440-mhz-by-ast-spacemobile-constellation/

The company that wants to take away parts of 70cm ham radio for its own use ALSO is a problem child in the field of astronomy 😡

"...one of the newest satellites, BlueWalker 3, outshines all
but a handful of the brightest visible stars. It exemplifies how, without stronger regulation,
satellites could substantially change the view of the night sky worldwide (Fig. 1), and severely
jeopardize future use of Earth’s orbit for science, communication and space exploration. .... The BlueWalker 3 satellite, which
has been in orbit since September 2022, was launched by a relatively small operator, telecommunications firm AST SpaceMobile:"

h/t @sundogplanets

https://www.nature.com/articles/d41586-023-03610-5.epdf?sharing_token=N3ZXzHI7MzDFS5H1-XALw9RgN0jAjWel9jnR3ZoTv0PfjfR6DwahWT59-lg9pzSxNpUsUDB7UWjWgBdiyjGINt2ANPy24ituhh5SRjVG6slTJ7_cAMxNjcU5K87a-v_wrL6kAXkJxGwQCw4I8ySxYDz_SWdZqcAeEiOTbL5uEL0%3D

#astronomy #hamradio

ALT

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N3VEM is an amateur radio enthusiast and model rocket builder making videos about both these hobbies:

➡️ @n3vem

They have already uploaded over 30 videos, if these haven't federated to your server yet you can browse them all at https://makertube.net/a/n3vem/videos

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How do lightning arrestors (the kind that go on an outdoor antenna feed line, bonded to ground) function? what do they look like internally?
#hamRadio