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Drake T4X, T4 AM Modifications - Full AM Carrier - schematic and description
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K1JJ
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7
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3406
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February 25, 2019, 12:11:59 PM
by WD8BIL
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262 or 250KC I.F. transformers and 455KC BFO coils
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Opcom
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12
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5011
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February 26, 2019, 12:52:37 AM
by Opcom
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digital receiver readout without modifications
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PA0NVD
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12
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3865
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February 26, 2019, 05:24:56 PM
by PA0NVD
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coilset contact problems with a 1940 HRO
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PA0NVD
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11
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3829
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February 26, 2019, 08:09:30 PM
by N3GTE
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Home brew T/R relay switch for Anan 10 pure signal
« 1 2 »
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W3RSW
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43
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30850
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February 26, 2019, 09:56:58 PM
by W3RSW
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RFI -- the bane of my ham life
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K8DI
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4
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2291
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February 28, 2019, 06:34:45 PM
by W6TOM
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Collins 20V3 Plug in Driver Coils resonant on 5th harmonic
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KC3FKR
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4
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2890
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March 02, 2019, 12:34:08 PM
by KC3FKR
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Optimod
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w2tgr
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2
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2784
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March 02, 2019, 06:06:20 PM
by K1JJ
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B & W 2500A amplifier
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K9EID
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0
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1749
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March 03, 2019, 01:44:25 PM
by K9EID
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The Granger Associates 172 Transmitter.
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V73WJ
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4
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4727
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March 03, 2019, 09:53:00 PM
by W4RFM
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Drake L7 Power Supply
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WB4YVO
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2
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2258
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March 04, 2019, 07:36:00 AM
by w9jsw
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Link Coupling Nomogram
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WA4WAX
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1
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1469
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March 04, 2019, 09:14:46 PM
by WBear2GCR
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Tube I.D.
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k7mdo
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4
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1961
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March 05, 2019, 08:28:50 AM
by KF7WWW
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Can someone identify this pi coil and switch assembly?
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Opcom
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3
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1870
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March 05, 2019, 09:16:11 PM
by Steve - K4HX
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JOHNSON VIKING II upgrades/ mods
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W4RFM
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16
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6840
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March 07, 2019, 08:36:56 PM
by KL7OF
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Hard to believe this actually worked (correctly!!).
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steve_qix
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19
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5818
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March 08, 2019, 11:24:45 PM
by Opcom
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Using Datakote
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W9ZSL
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5
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2443
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March 09, 2019, 07:45:21 AM
by W1RKW
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Johnson Ranger Problems
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N6WDR
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12
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3843
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March 11, 2019, 07:39:31 AM
by W2PHL
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Microwave Magazine Article on 100 Years of Rvcr Design
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Tom WA3KLR
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2
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1695
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March 11, 2019, 12:49:25 PM
by PA0NVD
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Single 811A AM Rig
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W9ZSL
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32
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12327
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March 13, 2019, 10:21:25 PM
by Opcom
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Microphones
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WA1HZK
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56
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20127
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March 14, 2019, 09:08:35 AM
by ka8gef
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Adjusting Open Wire Length
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Carl WA1KPD
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16
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6808
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March 18, 2019, 07:32:46 PM
by w7fox
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Stacking MOSFETs for high voltage
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Opcom
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6
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3552
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March 19, 2019, 01:01:24 PM
by Opcom
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DX-40 cathode resistor
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WA3QLW
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14
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4554
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March 20, 2019, 12:49:36 PM
by WA3QLW
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Class D 40/75m transmitter
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ka1tdq
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22
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7502
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March 22, 2019, 02:13:54 PM
by PA0NVD
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