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
1654 Views
Last post November 05, 2019, 1628 UTC
by Fansome
6M activity

Started by Elf36

1 Replies
1649 Views
Last post December 14, 2021, 1816 UTC
by gaston
0 Replies
1645 Views
Last post March 06, 2022, 0139 UTC
by pinto vortando
0 Replies
1642 Views
Last post August 31, 2021, 2012 UTC
by ThaDood
1 Replies
1630 Views
Last post January 10, 2022, 1949 UTC
by Josh
WARC 17/12 Meters

Started by Elf36

2 Replies
1616 Views
Last post January 31, 2022, 0248 UTC
by Elf36
2 Replies
1616 Views
Last post February 08, 2020, 1909 UTC
by ThaDood
0 Replies
1615 Views
Last post November 06, 2021, 1615 UTC
by Traveling Wave
1 Replies
1609 Views
Last post November 14, 2021, 0125 UTC
by Elf36
2 Replies
1601 Views
Last post January 11, 2023, 2255 UTC
by Traveling Wave
0 Replies
1592 Views
Last post June 11, 2025, 1847 UTC
by ThaDood
0 Replies
1583 Views
Last post May 09, 2021, 2139 UTC
by ThaDood
0 Replies
1576 Views
Last post January 28, 2020, 2133 UTC
by Fansome
0 Replies
1573 Views
Last post May 09, 2021, 0701 UTC
by kris
0 Replies
1561 Views
Last post May 12, 2024, 1310 UTC
by Wedergarten
3 Replies
1539 Views
Last post September 06, 2022, 1404 UTC
by Pigmeat
0 Replies
1533 Views
Last post November 02, 2021, 1827 UTC
by ThaDood
3 Replies
1532 Views
Last post September 19, 2022, 1929 UTC
by ThaDood
2 Replies
1522 Views
Last post September 26, 2023, 1225 UTC
by BoomboxDX
2 Replies
1518 Views
Last post November 11, 2023, 0634 UTC
by Shortwave_Listener

 

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