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
6 Replies
2247 Views
Last post June 30, 2018, 1619 UTC
by MDK2
2 Replies
2130 Views
Last post June 20, 2019, 2208 UTC
by MDK2
1 Replies
1685 Views
Last post March 31, 2019, 1624 UTC
by MDK2
3 Replies
1507 Views
Last post May 31, 2018, 2154 UTC
by MDK2
2 Replies
2058 Views
Last post May 31, 2019, 1616 UTC
by MDK2
1 Replies
1439 Views
Last post November 30, 2018, 1638 UTC
by MDK2
5 Replies
2263 Views
Last post October 31, 2018, 1615 UTC
by MDK2
2 Replies
1641 Views
Last post September 30, 2018, 1643 UTC
by MDK2
HM01 Loggings?

Started by Grinch

5 Replies
1101 Views
Last post February 03, 2024, 2301 UTC
by Traveling Wave
HM01 Logs

Started by 07code04stalker1776

0 Replies
1454 Views
Last post April 25, 2014, 2041 UTC
by 07code04stalker1776
2 Replies
2029 Views
Last post May 09, 2017, 1831 UTC
by R4002
1 Replies
1945 Views
Last post November 17, 2014, 0804 UTC
by Rizla
0 Replies
1162 Views
Last post August 01, 2017, 2305 UTC
by shadypyro
HM01 March 2024

Started by MDK2 « 1 2 3 »

33 Replies
3134 Views
Last post March 31, 2024, 0521 UTC
by MDK2
HM01 May 2024

Started by MDK2 « 1 2 »

25 Replies
2756 Views
Last post May 26, 2024, 1229 UTC
by MDK2
2 Replies
1642 Views
Last post November 12, 2017, 2249 UTC
by MDK2
5 Replies
2122 Views
Last post October 29, 2017, 1033 UTC
by Ct Yankee
0 Replies
1007 Views
Last post October 10, 2020, 1722 UTC
by shortwave radio
HM01 new groups

Started by Ary-B

1 Replies
1133 Views
Last post November 02, 2018, 1327 UTC
by MDK2
HM01 new groups

Started by Ary-B

6 Replies
1858 Views
Last post February 20, 2019, 1636 UTC
by Retops

 

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