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UploadedDescription
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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Date Author Subject
1. 19 Oct 2021 Giuseppe Abis (0) "Fitting of speaker in R-4C" View article


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