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
1 Replies
1300 Views
Last post November 13, 2019, 0532 UTC
by Pigmeat
2 Replies
1285 Views
Last post January 30, 2019, 2119 UTC
by Teotwaki
End fed SWL sloper (Grounding?)

Started by Matt285

2 Replies
1284 Views
Last post July 11, 2020, 1519 UTC
by ChrisSmolinski
0 Replies
1279 Views
Last post January 28, 2021, 1614 UTC
by Mateo32
1 Replies
1276 Views
Last post December 17, 2022, 0718 UTC
by Charlie_Dont_Surf
2 Replies
1274 Views
Last post July 16, 2020, 1644 UTC
by ChrisSmolinski
2 Replies
1264 Views
Last post November 17, 2023, 2229 UTC
by europirate
1 Replies
1263 Views
Last post April 01, 2024, 1335 UTC
by redhat
0 Replies
1263 Views
Last post January 14, 2018, 1910 UTC
by digitalmod
2 Replies
1261 Views
Last post September 28, 2019, 1757 UTC
by Josh
1 Replies
1250 Views
Last post July 05, 2020, 1241 UTC
by IQ_imbalance
3 Replies
1245 Views
Last post October 14, 2019, 2222 UTC
by Matt285
0 Replies
1242 Views
Last post March 27, 2018, 2011 UTC
by Daniel Wyllyans
0 Replies
1242 Views
Last post September 13, 2022, 1444 UTC
by kris
0 Replies
1240 Views
Last post July 03, 2017, 2227 UTC
by Gino Italy
Fan dipole

Started by Matt285

1 Replies
1240 Views
Last post December 13, 2019, 2316 UTC
by Josh
0 Replies
1240 Views
Last post March 03, 2020, 1813 UTC
by ThaDood
1 Replies
1233 Views
Last post September 06, 2019, 1741 UTC
by Josh
2 Replies
1223 Views
Last post April 10, 2023, 2111 UTC
by Stretchyman
BC 348 R

Started by Gino Italy

0 Replies
1215 Views
Last post May 28, 2016, 1343 UTC
by Gino Italy

 

Normal Topic
Hot Topic (More than 15 replies)
Very Hot Topic (More than 25 replies)

Locked Topic
Sticky Topic
Poll


HFUnderground T-Shirt
HFUnderground Garden Flag
by MitchellTimeDesigns