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13 Sep 2008Elimination RAC on the speaker and telephone TR-4CW
10 Aug 2008Noise elimination for Drake TR4CW
20 Nov 2006Controlled carrier AM modulator with ALC.
08 Aug 2006VFO Drake TR4 Family & T-4XC/R-4C inoperative. Dead reception.
03 Apr 2006SSB modulation improvement for your DRAKE TR-4 transceiver.
21 Feb 2006Receiver mixer improvement for Drake TR-4 transceiver.
28 Aug 2005Drake PTO stop info
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Date Author Subject
1. 26 Feb 2011 Domenico Dal Magro (0) power tx4b
2. 03 Nov 2008 peter klampferer (0) drawing error View article
3. 06 Sep 2008 Lasse Jaakola (1) TR4CW mod View article
4. 16 Mar 2006 William Caughron (0) Digital Readout for Drake

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