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January 01, 2026, 10:40:54 PM
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Lesson learned... defining ground in NEC
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W4AMV
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3
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2723
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May 20, 2025, 09:35:51 AM
by W4AMV
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Ballast replacement help
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n5ama
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34
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8764
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May 19, 2025, 05:05:23 PM
by w8khk
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Hallicrafters HT-9 TUs
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n5ama
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0
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1550
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May 15, 2025, 09:48:39 AM
by n5ama
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MFJ HF/VHF SWR Analyzer Calibration
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AJ1G
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1
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2085
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May 04, 2025, 07:25:28 PM
by KD6VXI
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Hallicrafters sx-9 transformer specs
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N9AXl
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1
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2047
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May 02, 2025, 05:54:50 PM
by DMOD
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FT-901DM Mic amplifier circuit
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kb3ouk
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3
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5174
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April 25, 2025, 06:34:23 AM
by pa3cli
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Tektronix Surprise.
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KD1SH
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10
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4425
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April 19, 2025, 08:57:51 PM
by KD1SH
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National HRO-60 Hum
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W1TTL
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23
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6621
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April 19, 2025, 08:14:46 PM
by W1TTL
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UTC Mod Transformer Connections
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KD1SH
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22
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6268
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April 16, 2025, 02:23:15 AM
by Pete, WA2CWA
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One for an EZNEC person
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WA4WAX
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1
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1756
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April 13, 2025, 04:13:21 PM
by DMOD
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6m local rag chew suggestions
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n5ama
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21
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5077
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April 12, 2025, 06:31:58 PM
by WB6NVH
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RCC 230L Amplifier
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W3JKO
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13
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3671
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April 09, 2025, 10:31:31 AM
by W7TFO
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Phase the Bobtail
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WA4WAX
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1
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1298
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April 05, 2025, 12:58:13 PM
by WA4WAX
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Johnson Viking Valiant modulation problem.
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W1OAT
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7
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2907
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April 04, 2025, 01:02:47 PM
by W1OAT
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Interesting audio pass band circuit
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Opcom
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4
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2362
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April 03, 2025, 10:51:37 PM
by Opcom
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RCA AM oscillator
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KB0TXC
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9
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2754
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April 03, 2025, 12:24:54 PM
by KB5MD
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Bobtail Curtain booklet
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WA4WAX
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3
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1632
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April 02, 2025, 03:51:14 PM
by Pete, WA2CWA
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Harris RF 131
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kc2we
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1
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1127
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April 01, 2025, 04:27:29 PM
by Pete, WA2CWA
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1944 Army-Navy recommended tubes
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W1DAN
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2
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1556
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March 24, 2025, 05:43:41 PM
by W1DAN
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Question on keeping rf out of mains
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KB0TXC
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9
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2800
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March 23, 2025, 01:27:48 PM
by Steve - K4HX
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RCA serial number lookup
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KB0TXC
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0
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1197
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March 22, 2025, 10:26:24 AM
by KB0TXC
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Viking Challenger Tube Substitutions
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W0PWE
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4
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1880
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March 21, 2025, 01:40:58 PM
by DMOD
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Looking for documentation for RCA UL-4392 oven controlled crystal oscillator
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KB0TXC
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9
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2712
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March 21, 2025, 09:38:24 AM
by KB0TXC
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Globe Champion 300
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W5FH
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1
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1405
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March 12, 2025, 11:38:22 PM
by K4RT
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Two vs one Receiver RF Stage
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n8fvj
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27
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7508
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March 11, 2025, 10:12:12 PM
by Steve - K4HX
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AMfone - Dedicated to Amplitude Modulation on the Amateur Radio Bands
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