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22 Nov 2011Fitting of speaker in R-4C
08 Feb 2006A New Noise Blanker for the Drake R-4C
23 Sep 2002R-4C audio amplifier
23 Sep 2002R-4C improved power supply
23 Sep 2002Performance improvements for R-4B and R-4C Drake radio receivers
22 Sep 2002Replacement PS-4 R-4C Power Supply
22 Sep 2002Updates to R-4C audio amplifier and product detector
22 Sep 2002New R-4C audio-amplifier
22 Sep 2002Drake R-4( ) Audio Quality Field Change Announcement
22 Sep 2002Still the finest competion-grade receiver
22 Sep 2002Field Change for late model R-4C
22 Sep 2002Replacement PD-4 R-4C Product Detector
22 Sep 2002Installation of MIX-4 in Drake R-4C
22 Sep 20023 KHz filter for Drake R-4C, R-7, TR-7
22 Sep 2002Drake R-4C Levels
22 Sep 2002GUD product detector for the Drake R-4C
22 Sep 2002FOX-TANGO crystal filters and accessories for the Drake R-4C
21 Sep 2002600 hz 6-pole first-if crystal filter for Drake R-4C
21 Sep 2002Replacement AMP-4 R-4C Audio Amplifier
21 Sep 2002Installation of the CF-600/6 and relay switch kit
20 Sep 2002Installation of cf-5k/8 in the Drake R-4C
15 Sep 20024-filter switching
15 Sep 2002R-4C third-mixer oscillator adjustments
15 Sep 20023-filter switching CF-600
15 Sep 2002Installation of the first-if SSB filters and relay switch kit for R-4C
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This forum message list include all message for that is related to R-4C, this include message that also is related to articles. If the message is relate to an article, the article can be selected next to each message.

Date Author Subject
1. 10 Apr 2007 Anonymous (1) R-4C and dig.counter
2. 19 Aug 2005 AA5WG (2) Drake C-Line - QSK

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