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GATES BC-1T KB5MD 1 18 Last post Today at 05:17:06 PM
by KL7OF
Reasonable PL259 Sources? WA2SQQ 11 171 Last post Today at 03:54:00 PM
by WA2SQQ
Using an SB-220 (HL-2200) With One Tube WB2RON 7 265 Last post Today at 09:47:46 AM
by KD6VXI
COMBINING PLATE SUPPLIES FOR INCREASED VOLTAGE KL7OF 17 963 Last post Today at 06:33:51 AM
by AMLOVER
Valiant and other clipper circuits: The magic, the mystery, and the scorn N1BCG 12 551 Last post Yesterday at 11:21:10 PM
by Opcom
Homebrew a plate choke for 4-1000 GG with warc « 1 2 3 » KL7OF 52 4284 Last post Yesterday at 08:13:29 PM
by KL7OF
3 phase to single phase larger transmitters « 1 2 » KL7OF 48 8491 Last post Yesterday at 09:11:54 AM
by KL7OF
Collins 32V2 & 75A4 W4KJP 3 252 Last post January 23, 2021, 07:04:00 PM
by W1NB
A Simple Test to Check Your Transmitter for IMD (Intermodulation Distortion) K1JJ 17 2109 Last post January 23, 2021, 10:26:10 AM
by KD6VXI
240V AC utility feed has harmonic distortion, poor power factor? « 1 2 » K1JJ 36 977 Last post January 22, 2021, 08:41:26 PM
by Opcom
BC-611/SCR-536 WD9M 1 140 Last post January 22, 2021, 08:21:20 PM
by w3jn
Transformerless screen coupling from PP plates? SA2CLC 11 667 Last post January 21, 2021, 10:52:54 PM
by W3SLK
813 amp project « 1 2 3 » n4joy 52 7906 Last post January 18, 2021, 02:22:03 PM
by WQ9E
NC-400 W3SLK 0 102 Last post January 18, 2021, 10:21:32 AM
by W3SLK
Full wave loop question WA2SQQ 1 167 Last post January 17, 2021, 04:56:03 PM
by W3SLK
Knight Kit R-100 - R-100A questions W4RFM 4 304 Last post January 14, 2021, 01:08:09 PM
by W4RFM
MicroCap circuit with tubes start of a small AM transmitter Opcom 5 402 Last post January 14, 2021, 02:18:11 AM
by Opcom
Modulator filaments off on CW mode n4joy 2 212 Last post January 13, 2021, 12:13:35 PM
by n4joy
VF Wireman 300 ohm window line K6JEK 4 310 Last post January 12, 2021, 12:51:31 PM
by WU2D
Help finding or building a 500w+ transmitter PatrickSWL 17 934 Last post January 12, 2021, 07:30:45 AM
by w3jn
DX100B no modulator current draw or audio kb3ouk 9 443 Last post January 11, 2021, 08:16:31 PM
by w8khk
Hammarlund BC-779 SP-200 Scott SWL 16 797 Last post January 09, 2021, 12:08:12 PM
by Scott SWL
Designing a QRO Series Modulated AM Transmitter w8khk 22 1134 Last post January 09, 2021, 09:48:33 AM
by w8khk
Audio Power Output Measurement Feedback WA2SQQ 7 383 Last post January 08, 2021, 11:45:08 PM
by WBear2GCR
Good site to calculate resonating caps for fixed chokes VE7RF 15 1213 Last post January 08, 2021, 01:35:43 AM
by Opcom
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