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Low audio and to much bass « 1 2 » ki4nr 28 1088 Last post Today at 01:10:42 AM
by VE7RF
Test instrument help? RF voltmeter Sadelco 7600 Opcom 3 56 Last post Yesterday at 10:14:51 PM
by KA2DZT
PUSH PULL AUDIO TRANSFORMERS W2PFY 9 415 Last post Yesterday at 02:56:38 AM
by DMOD
Old tube? Or? k7mdo 4 450 Last post August 02, 2020, 03:32:16 PM
by W2PFY
60 watt Modulator near complete N4LTA 6 246 Last post August 02, 2020, 01:23:06 PM
by N4LTA
More-better NanoVNA 3 ghz W1ITT 1 151 Last post August 02, 2020, 09:59:00 AM
by KD6VXI
Drake "hot transistor" k7mdo 9 510 Last post August 01, 2020, 12:11:35 AM
by k7mdo
Questions abot using an XTAL on my EFJ Valiant w1jto 4 183 Last post July 31, 2020, 07:46:20 PM
by N8ETQ
Pi-net component choices KI4YAN 8 510 Last post July 31, 2020, 07:45:21 PM
by KI4YAN
Easy Class D PWM exciter km6sn 1 109 Last post July 31, 2020, 01:35:09 PM
by Steve - K4HX
RF Deck layout thoughts KI4YAN 3 298 Last post July 30, 2020, 08:29:17 PM
by KI4YAN
SB-220 amp 120 volt vs. 240 use « 1 2 » KK4RF 42 20646 Last post July 30, 2020, 03:01:49 PM
by w4bfs
Modulator low level output N4LTA 16 630 Last post July 28, 2020, 10:05:11 PM
by MikeKE0ZUinkcmo
Questionable Capacitor-How to Identify this one? KI4YAN 4 409 Last post July 24, 2020, 01:16:12 PM
by KA0HCP
800Hz panel meter question Opcom 1 241 Last post July 22, 2020, 11:06:00 AM
by KA3EKH
“Computer Grade” Filter Caps WA2SQQ 5 374 Last post July 22, 2020, 10:46:14 AM
by WA2SQQ
RME-69 volume control N9AXl 2 211 Last post July 21, 2020, 08:37:20 PM
by W2JBL
Safe Metering of Transmitter currents/voltages-can't find old article? KI4YAN 2 234 Last post July 20, 2020, 05:59:21 PM
by KI4YAN
Modulator power supply schematic « 1 2 » N4LTA 27 1088 Last post July 19, 2020, 09:02:05 PM
by WD5JKO
Another 807 Modulator KI4YAN 6 416 Last post July 18, 2020, 11:45:57 PM
by DMOD
Curious whether there's a way to measure impedance of tube final... K8DI 2 249 Last post July 17, 2020, 08:51:42 PM
by W4AMV
Modulator audio schematic N4LTA 16 803 Last post July 17, 2020, 02:37:38 PM
by KI4YAN
Screen modulation winding-bump up with a transformer or clamp tube? KI4YAN 11 488 Last post July 16, 2020, 02:05:41 PM
by KI4YAN
Suppressor Grid Mod GU81M Tx GW0FZY 7 367 Last post July 16, 2020, 02:49:29 AM
by GW0FZY
Tiny mod transformer, suitable for arc-5 SA2CLC 4 361 Last post July 16, 2020, 01:14:41 AM
by SA2CLC
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