{Collins} Disabling audio blanking in the 651S-1



OK...
Refering to the instruction book 523.0764052.00221A, Part 1, Diagrams section, 523-0764058, Power supply regulator card A1 (788-2949-001) schematic diagram, Figure 4, Page 25/26.
Locate CR6 on the A1 card, 1N914, Audio blanking pulse diode.
Lift one end of the diode - mod complete!
NOTE: You will hear the shutter buzz from the dial mechanism as you tune in some instances but at least you can hear where you are going!
Enjoy!
73, Ian, VK3JQ




 --- On Thu 10/07,  < Ka9p@xxxxxxx > wrote:
From:  [mailto: Ka9p@xxxxxxx]
To: COLLINS@xxxxxxxxxxxxx
Date: Thu, 7 Oct 2004 08:54:15 EDT
Subject: {Collins} Re: 651S-1A Mod

while on that subject, anyone know a mod to mute this beast easily?  I've <br>heard there is a simple place you can do it, but not been able to locate the <br>specifics - could it be just picking up that mute line you're talkin' about?  <br>Thanks, Scott<br><br>Sponsored by the Collins Collectors Association http://www.collinsradio.org<br>Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central<br>Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC<br>1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)<br>Sun AM Net: 29.050 Mc-1200 Central<br><br>

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Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
Sun AM Net: 29.050 Mc-1200 Central






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