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
216 Views
Last post October 30, 2022, 2000 UTC
by Ray Lalleu
0 Replies
339 Views
Last post October 29, 2023, 1951 UTC
by Ray Lalleu
0 Replies
385 Views
Last post November 03, 2019, 0857 UTC
by Ray Lalleu
1 Replies
487 Views
Last post May 23, 2020, 2007 UTC
by kris
0 Replies
367 Views
Last post February 12, 2022, 1730 UTC
by Ray Lalleu
0 Replies
415 Views
Last post December 19, 2018, 2008 UTC
by Ray Lalleu
0 Replies
304 Views
Last post November 30, 2020, 1555 UTC
by Ray Lalleu
0 Replies
219 Views
Last post September 12, 2024, 1956 UTC
by Ray Lalleu
1 Replies
402 Views
Last post June 08, 2021, 2032 UTC
by Bali_Frank
0 Replies
294 Views
Last post May 15, 2023, 2217 UTC
by Ray Lalleu
0 Replies
385 Views
Last post May 06, 2019, 2115 UTC
by Ray Lalleu
0 Replies
454 Views
Last post April 20, 2020, 1327 UTC
by Ray Lalleu
0 Replies
402 Views
Last post February 28, 2021, 1457 UTC
by Ray Lalleu
1 Replies
351 Views
Last post January 22, 2023, 1124 UTC
by Bali_Frank
4 Replies
931 Views
Last post December 25, 2023, 2126 UTC
by kris
0 Replies
376 Views
Last post January 15, 2020, 1559 UTC
by Ray Lalleu
1 Replies
365 Views
Last post October 25, 2020, 1418 UTC
by FOX
0 Replies
208 Views
Last post September 17, 2023, 1603 UTC
by Ray Lalleu
0 Replies
150 Views
Last post June 22, 2025, 1738 UTC
by Ray Lalleu
0 Replies
600 Views
Last post May 22, 2018, 2322 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 House Flag
by MitchellTimeDesigns