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



Hello all,

What Ian says is true but if you cut the trace on the audio board you do not have the shutter buzz. every thing sounds normal just like an S-Line or KWM-2.

Vy 73,

John 

"VK3JQ" <i_mclean@xxxxxxxxxx> wrote:

>
>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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>Sponsored by the Collins Collectors Association http://www.collinsradio.org
>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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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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