We seek to understand and document all radio transmissions, legal and otherwise, as part of the radio listening hobby. We do not encourage any radio operations contrary to regulations. Always consult with the appropriate authorities if you have questions concerning what is permissible in your locale.

Subject / Started by Last post
0 Replies
1817 Views
Last post February 19, 2021, 1838 UTC
by ThaDood
0 Replies
823 Views
Last post January 30, 2024, 2000 UTC
by R4002
FLTSATCOM

Started by Matt285 « 1 2 »

15 Replies
10359 Views
Last post March 30, 2020, 1134 UTC
by arucivetos
2 Replies
1189 Views
Last post December 20, 2022, 1451 UTC
by R4002
0 Replies
624 Views
Last post December 14, 2023, 1524 UTC
by R4002
0 Replies
1022 Views
Last post January 12, 2023, 1652 UTC
by R4002
0 Replies
1339 Views
Last post April 12, 2024, 1755 UTC
by R4002
0 Replies
1131 Views
Last post August 14, 2024, 1233 UTC
by R4002
0 Replies
1783 Views
Last post May 15, 2020, 0204 UTC
by WA4FHY
7 Replies
1686 Views
Last post December 09, 2022, 1653 UTC
by sat_dxer
6 Replies
2804 Views
Last post January 23, 2020, 1540 UTC
by R4002
0 Replies
2738 Views
Last post December 11, 2014, 1021 UTC
by dxextra
11 Replies
4940 Views
Last post November 29, 2018, 2230 UTC
by R4002
2 Replies
2074 Views
Last post January 20, 2021, 1502 UTC
by raypfaff
1 Replies
2338 Views
Last post November 20, 2017, 2219 UTC
by Rob.
Ham radio satellites (AMSAT)

Started by Matt285

1 Replies
3199 Views
Last post June 18, 2019, 2312 UTC
by Josh
2 Replies
1061 Views
Last post February 13, 2023, 1217 UTC
by R4002
HNMS radiosondes

Started by SV1XV

13 Replies
5861 Views
Last post April 07, 2020, 1220 UTC
by SV1XV
1 Replies
3715 Views
Last post July 08, 2014, 1653 UTC
by ka1iic
8 Replies
4684 Views
Last post July 01, 2019, 2323 UTC
by Pigmeat

 

Normal Topic
Hot Topic (More than 15 replies)
Very Hot Topic (More than 25 replies)

Locked Topic
Sticky Topic
Poll


HFUnderground T-Shirt
HFUnderground Garden Flag
by MitchellTimeDesigns