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 permissable in your locale.

Subject / Started by Last post
0 Replies
262 Views
Last post November 23, 2022, 0154 UTC
by skeezix
4 Replies
4341 Views
Last post January 01, 2013, 2025 UTC
by BDM
13 Replies
4394 Views
Last post January 14, 2019, 2252 UTC
by ThElectriCat
1 Replies
953 Views
Last post December 25, 2019, 0959 UTC
by pinto vortando
21 Replies
4453 Views
Last post September 17, 2018, 1838 UTC
by pinto vortando
1 Replies
1274 Views
Last post April 09, 2020, 1154 UTC
by jFarley
9 Replies
1795 Views
Last post February 11, 2022, 0106 UTC
by pinto vortando
3 Replies
1574 Views
Last post February 02, 2017, 2207 UTC
by Traveling Wave
2 Replies
974 Views
Last post August 28, 2020, 0304 UTC
by pinto vortando
1 Replies
796 Views
Last post February 17, 2021, 0953 UTC
by pinto vortando
0 Replies
274 Views
Last post December 27, 2022, 1054 UTC
by TRI International
0 Replies
236 Views
Last post December 27, 2022, 1044 UTC
by TRI International
0 Replies
212 Views
Last post December 27, 2022, 1037 UTC
by TRI International
0 Replies
614 Views
Last post August 31, 2023, 0940 UTC
by TRI International
0 Replies
135 Views
Last post August 19, 2023, 0948 UTC
by TRI International
0 Replies
103 Views
Last post August 16, 2023, 1101 UTC
by TRI International
0 Replies
85 Views
Last post August 15, 2023, 0956 UTC
by TRI International
0 Replies
125 Views
Last post August 11, 2023, 1121 UTC
by TRI International
0 Replies
129 Views
Last post August 01, 2023, 1633 UTC
by TRI International
0 Replies
148 Views
Last post July 25, 2023, 0846 UTC
by TRI International

 

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

Locked Topic
Sticky Topic
Poll



Item image   Simplified Practical Filter Design by Irving M. Gottlieb

 $14.95