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
2 Replies
757 Views
Last post June 06, 2018, 2209 UTC
by kris
1 Replies
233 Views
Last post July 05, 2025, 0817 UTC
by Ray Lalleu
2 Replies
619 Views
Last post October 03, 2021, 1355 UTC
by Bali_Frank
1 Replies
369 Views
Last post February 02, 2023, 1551 UTC
by Shortwave_Listener
0 Replies
406 Views
Last post March 09, 2021, 1740 UTC
by Ray Lalleu
0 Replies
251 Views
Last post May 19, 2024, 1927 UTC
by Ray Lalleu
3 Replies
656 Views
Last post May 22, 2022, 1856 UTC
by Panda_NL
0 Replies
397 Views
Last post June 17, 2021, 1720 UTC
by Ray Lalleu
0 Replies
299 Views
Last post September 12, 2020, 2046 UTC
by Ray Lalleu
0 Replies
481 Views
Last post August 18, 2018, 1331 UTC
by Ray Lalleu
0 Replies
388 Views
Last post December 08, 2020, 2123 UTC
by Ray Lalleu
0 Replies
489 Views
Last post March 16, 2020, 1751 UTC
by Ray Lalleu
0 Replies
435 Views
Last post December 31, 2018, 1420 UTC
by Ray Lalleu
2 Replies
105 Views
Last post November 08, 2025, 1726 UTC
by kris
2 Replies
535 Views
Last post February 09, 2024, 2003 UTC
by AlexRadioDX
1 Replies
338 Views
Last post May 10, 2025, 2157 UTC
by RainBrandy
0 Replies
472 Views
Last post November 13, 2019, 0811 UTC
by Ray Lalleu
0 Replies
302 Views
Last post November 11, 2022, 2210 UTC
by Ray Lalleu
0 Replies
374 Views
Last post January 16, 2021, 0948 UTC
by Ray Lalleu
0 Replies
267 Views
Last post February 09, 2025, 1719 UTC
by Ray Lalleu

 

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

Locked Topic
Sticky Topic
Poll


HFUnderground T-Shirt
HFUnderground T-Shirt
by MitchellTimeDesigns