[TenTec] Omni VI+ mic input

[Al Williams]

I am happy to see the information on where the info about the mike voltage
is located as I looked for it in isolating a failure in my 14 mos old
omni6+.  (on my first call in fone SS contest, there was no indication of
output).  I have since determined that it works if I jumper
the hand held tt mikes ground to chassis ground.  The gnd pin on the
tt front panel has no continuity to chassis ground.  I haven't yet asked
tt for the proper repair.  Noticed that there appear to be some ferrite
cylinders on some to leads from the tt front panel mike connector.

I have started a cross-reference list for the omni6+ to help in tracing
circuits from one board to another.  I wonder if others have already
done this (besides TenTec!) or are interested.  Or am I missing some
means already in place?
alwilliams@olywa.net k7puc

v
-----Original Message-----
From: Dale L. Martin <kg5u@hal-pc.org>
To: Ten-Tec Reflector <Tentec@contesting.com>
Date: Wednesday, December 08, 1999 4:33 AM
Subject: Re: [TenTec] Omni VI+ mic input


>
>-----Original Message-----
>From: Alfred Lorona <alforo@megsinet.net>
>>
>>Can anyone tell me how the plus voltage for an electret mic on pin 4 of
the
>>front panel mic connector is derived? Series resistor? What value? I have
>>been unable to find the connector on any of the schematic diagrams in the
>>manual.
>>
>>73, AL e-mail alforo@megsinet.net
>>
>
>
>Hi, Al.
>
>At this time of morning and my age of life, a magnifying glass is very
>helpful--actually, probably helpful at any age when dealing with 8.5x11
>schematics.  I've also found different colored highlighters to be very
>effective in tracing the circuit of interest--If I looked for it once, I'll
>likely look for it again!
>
>Check the Main Wiring drawing (in my manual, it's just before page 5-1--a
>fold-out page,
>but not the Logic Board).
>
>The mic jack is at the upper left corner.
>
>The PTT and +Mic leads run together down and across to the 81596 board to
>connector 65.  The Control Board (81596) schematic shows the PTT/+Mic
connector
>65 at the top center of the drawing.  There you will find how the voltage
is
>derived: from the +Reg (connector 59) through R39, a 470 ohm resistor.
>
>73,
>dale, kg5u
>
>
>
>
>
>
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>


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