[TenTec] New 703 Mic

[Bob McGraw - K4TAX]

The switch is an integral part of the mike.

I've found the basic issue is the plastic to plastic mechanism at the pivot 
point squeak when moving thus while being depressed.  A small dab of 
Vaseline applied corrects the problem.  The second issue is the button 
smacks the side of the mike at a point in time after the PTT contact is 
closed.  Thus the transmitter is on the air and then the physical contact 
with the side of the mike which is transmitted through the case to the 
element to the radio.

Lubricate the pivot points and shorten the throw of the PTT lever corrects 
the problem.

73
Bob, K4TAX


----- Original Message ----- 
From: "Richards" <jruing at ameritech.net>
To: "Discussion of Ten-Tec Equipment" <tentec at contesting.com>
Sent: Saturday, February 02, 2013 1:04 AM
Subject: Re: [TenTec] New 703 Mic


> What would happen if you swapped the switch out?
> I think that is what I would try to do, as the problem
> continues but is, now, minimized.  You can use the
> current switch until we determine a quiet replacement.
>
> Is there any reason we could not scour the planet
> and find a better, quieter switch?   I would pitch in
> on that project.  It might assist others, as well.
>
> Happy days.
> ______________  K8JHR  ____________________
>
> On 2/1/2013 1:43 PM, John Huffman wrote:
>
>
>> I have minimized the button noise by snipping off a bit of the switch
>> plunger inside the mike.  Now the button activates the PTT just a bit
>> before its travel limit.  Thus, the noise and scratching the mic puts
>> out over the air is now restricted to that last bit of button travel.
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