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
5 Replies
1010 Views
Last post December 24, 2020, 1413 UTC
by Andrew Yoder
13 Replies
3195 Views
Last post December 31, 2020, 2326 UTC
by RadioConfusionFan
11 Replies
3291 Views
Last post December 24, 2020, 2241 UTC
by DimBulb
2 Replies
753 Views
Last post December 29, 2020, 2145 UTC
by skyman
7 Replies
1357 Views
Last post August 01, 2020, 0329 UTC
by RobRich
5 Replies
982 Views
Last post December 18, 2020, 2245 UTC
by William Hassig
13 Replies
3538 Views
Last post September 12, 2020, 0159 UTC
by myteaquinn
2 Replies
883 Views
Last post October 25, 2021, 0114 UTC
by Bali_Frank
13 Replies
2623 Views
Last post March 25, 2020, 0127 UTC
by cheesehed
7 Replies
1499 Views
Last post March 24, 2020, 0028 UTC
by Markokpik
20 Replies
2914 Views
Last post January 06, 2020, 0029 UTC
by dave524
5 Replies
1306 Views
Last post December 30, 2019, 2237 UTC
by ChrisSmolinski
13 Replies
1904 Views
Last post March 14, 2020, 0134 UTC
by Davep
2 Replies
625 Views
Last post February 13, 2022, 0050 UTC
by Erik Mattson
1 Replies
433 Views
Last post March 09, 2024, 0319 UTC
by refmo
2 Replies
1202 Views
Last post February 13, 2019, 1912 UTC
by Josh
2 Replies
750 Views
Last post November 10, 2018, 1635 UTC
by Ct Yankee
3 Replies
1161 Views
Last post November 11, 2018, 2158 UTC
by refmo
1 Replies
632 Views
Last post November 21, 2022, 0432 UTC
by myteaquinn
5 Replies
780 Views
Last post September 03, 2023, 0406 UTC
by Zoidberg

 

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