The RF Workbench

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.

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Subject / Started by	Replies / Views	Last post
Beginner class D design Started by OgreVorbis « 1 2 3 4 5 6 »	81 Replies 68633 Views	June 12, 2019, 2122 UTC by OgreVorbis
Beacon Project "Common and Precious" (OFF air, 10.237,5kHz, 5W) Started by Zazzle « 1 2 3 4 5 »	61 Replies 87831 Views	July 17, 2018, 1932 UTC by Zazzle
New here, and my journey building a SW xmtr Started by fieldstrength1947 « 1 2 3 4 5 »	60 Replies 39524 Views	October 09, 2018, 1502 UTC by R4002
Stretchyman “40W TX” Failure Investigation and Remediation Started by Charlie_Dont_Surf « 1 2 3 4 5 »	60 Replies 75342 Views	January 05, 2024, 0025 UTC by Zane
U-LULU (Updated LULU) for 48 meters, 20 Watt Class-E AM Transmitter Started by Charlie_Dont_Surf « 1 2 3 4 »	50 Replies 106597 Views	October 06, 2026, 1758 UTC by Tonsku79
Someone had Corsair II AM TX experience? Started by netsmo62 « 1 2 3 4 »	49 Replies 51573 Views	March 28, 2023, 1531 UTC by Stretchyman
Hellschreiber beacon - with some oomph! Started by Radiotech « 1 2 3 4 »	45 Replies 33154 Views	July 08, 2022, 0212 UTC by Charlie_Dont_Surf
Beacon Project "Common and Precious III" (OFF air, 26510 kHz, 8W) Started by Zazzle « 1 2 3 »	41 Replies 84418 Views	August 07, 2018, 1754 UTC by syfr
Beacon Project "Common and Precious II" (OFF air, 6.398.5kHz, 30W) Started by Zazzle « 1 2 3 »	40 Replies 155635 Views	July 24, 2018, 2316 UTC by Zazzle
Stretchyman 40w GaN TX is sick Started by Antennae « 1 2 3 »	39 Replies 42385 Views	June 27, 2020, 2100 UTC by Charlie_Dont_Surf
Stretchyman 40 W TX Reliability Modifications Started by Charlie_Dont_Surf « 1 2 3 »	36 Replies 26306 Views	October 31, 2022, 2035 UTC by Azimuth Coordinator
Modulated 5W NS40 Started by Antennae « 1 2 3 »	33 Replies 30464 Views	September 11, 2020, 1311 UTC by syfr
HF Beacon, design questions Started by greator « 1 2 3 »	33 Replies 21271 Views	June 21, 2020, 0826 UTC by greator
Solar SLA charging and maintenance for unattended transmitters Started by deciduous « 1 2 3 »	32 Replies 25502 Views	May 28, 2020, 1205 UTC by syfr
NCP driver sucks Started by OgreVorbis « 1 2 3 »	32 Replies 25367 Views	November 11, 2023, 0612 UTC by Charlie_Dont_Surf
Simple SiC TX Started by Stretchyman « 1 2 3 »	30 Replies 26634 Views	June 22, 2019, 2200 UTC by Stretchyman
Any DDS 200 watt AM Transmitters or kits Started by digitalmod « 1 2 »	29 Replies 26050 Views	January 19, 2018, 1143 UTC by ChrisSmolinski
High Powered Pirates Started by redhat « 1 2 »	26 Replies 25629 Views	June 15, 2014, 1317 UTC by OMCS
So...what can a person do with 2 or 4: WL23791/TH150 Started by RedMercuryLabs « 1 2 »	26 Replies 26496 Views	April 09, 2019, 2358 UTC by Evodoc
Audio jacks/plugs as QRP RF wire quick connects Started by i_hear_you « 1 2 »	23 Replies 42420 Views	July 16, 2019, 1844 UTC by Pigmeat

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