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
7 Replies
2522 Views
Last post November 04, 2015, 2048 UTC
by R4002
7 Replies
6548 Views
Last post November 15, 2017, 1844 UTC
by R4002
7 Replies
3304 Views
Last post October 22, 2015, 2129 UTC
by R4002
7 Replies
6001 Views
Last post September 27, 2019, 1044 UTC
by R4002
7 Replies
1063 Views
Last post November 01, 2022, 1158 UTC
by R4002
7 Replies
622 Views
Last post September 19, 2022, 0053 UTC
by Elf36
7 Replies
923 Views
Last post February 05, 2022, 2206 UTC
by Elf36
7 Replies
37207 Views
Last post July 28, 2019, 1727 UTC
by R4002
7 Replies
2173 Views
Last post May 28, 2018, 0243 UTC
by ThaDood
7 Replies
844 Views
Last post June 28, 2023, 0120 UTC
by dave524
7 Replies
1670 Views
Last post August 07, 2020, 2005 UTC
by radiogaga
7 Replies
1087 Views
Last post October 18, 2021, 2150 UTC
by Elf36
7 Replies
7683 Views
Last post July 28, 2014, 2010 UTC
by Andrew Yoder
7 Replies
1598 Views
Last post February 20, 2020, 1327 UTC
by R4002
7 Replies
1681 Views
Last post December 20, 2019, 2226 UTC
by Josh
7 Replies
2205 Views
Last post May 06, 2018, 0130 UTC
by FFM
11M Activity

Started by Elf36

7 Replies
823 Views
Last post October 09, 2021, 1912 UTC
by Elf36
8 Replies
2824 Views
Last post May 20, 2017, 1458 UTC
by flexoman61
11m opening

Started by Matt285

8 Replies
1662 Views
Last post August 09, 2020, 1724 UTC
by Matt285
8 Replies
1020 Views
Last post December 30, 2022, 2045 UTC
by HF DXER

 

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