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
1108 Views
Last post October 28, 2021, 1503 UTC
by R4002
0 Replies
1108 Views
Last post August 15, 2020, 2135 UTC
by ChrisSmolinski
0 Replies
1108 Views
Last post June 25, 2017, 1722 UTC
by R4002
1 Replies
1111 Views
Last post April 03, 2023, 1604 UTC
by Pigmeat
0 Replies
1111 Views
Last post June 25, 2017, 1716 UTC
by R4002
0 Replies
1119 Views
Last post April 06, 2022, 1507 UTC
by Mad Radio DXer UK
0 Replies
1120 Views
Last post June 12, 2017, 2043 UTC
by R4002
2 Replies
1121 Views
Last post June 04, 2021, 0635 UTC
by ThaDood
0 Replies
1122 Views
Last post July 01, 2017, 1646 UTC
by R4002
0 Replies
1127 Views
Last post May 16, 2017, 1510 UTC
by Unknown Name
19 Oct 11M opening

Started by ZFT

1 Replies
1128 Views
Last post October 19, 2022, 1710 UTC
by R4002
0 Replies
1129 Views
Last post April 07, 2022, 0840 UTC
by TRI International
0 Replies
1130 Views
Last post June 29, 2017, 1935 UTC
by R4002
3 Replies
1131 Views
Last post November 13, 2021, 2318 UTC
by Elf36
2 Replies
1132 Views
Last post October 01, 2021, 1407 UTC
by R4002
2 Replies
1132 Views
Last post June 20, 2023, 0633 UTC
by Pigmeat
3 Replies
1133 Views
Last post August 10, 2022, 1334 UTC
by Pigmeat
7 Replies
1133 Views
Last post November 22, 2024, 1939 UTC
by Sealord
3 Replies
1134 Views
Last post June 18, 2021, 1344 UTC
by N0TLD
0 Replies
1134 Views
Last post November 06, 2015, 1337 UTC
by ChrisSmolinski

 

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