[TenTec] New 703 Mic

[John Huffman]

Ed -

I think it sounds fine.  Some of the local audio experts say it is a bit 
restricted with a mid-range peak.  I think, for my purposes, that's good.

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.  
Don't try this at home.  Snip too much and you need a new plunger -> 
switch -> mic.

73 de K1ESE
John


On 2/1/2013 8:26 AM, Ed Purvis wrote:
> Other than the button noise, any other comments on the 703 mic?
>
> Ed WA4NJY
>
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>   
>
> Now that I am older, here is what I now know...
>
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>
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> ________________________________
>   From: John Huffman <hjohnc at gmail.com>
> To: Discussion of Ten-Tec Equipment <tentec at contesting.com>; rohre at arlut.utexas.edu; rmcgraw at blomand.net
> Sent: Thursday, January 31, 2013 5:44 AM
> Subject: Re: [TenTec] New 703 Mic
>   
> Bob -
>
> The Vaseline on the pivot helped a lot.  The noise is still there, but I think I can live with what's left.
>
> I may try some of Stuart's padding suggestions.  The noise is from the button and not the switch and padding out the pivot point and where the sides of the button brush the case would do the trick, but there is little clearance in either spot.
>
> Thanks for the help, Bob and Stuart.
>
> 73 de K1ESE
> John
>
>
> On 1/29/2013 1:15 PM, Bob McGraw - K4TAX wrote:
>> I have two of them.  Found that if I carefully opened the case {watch for spring loaded parts} by removing 3 screws in the back, and using Vaseline to lubricate the PTT button pivot at 2 places {front and back half} and the tip of the bar that activates the switch the issue is corrected.  A flat toothpick is ideal for applying a very small amount of the lubricant.  I don't advocate using any type of spray lubricant under any circumstance.
>>
>> 73
>> Bob, K4TAX
>>
>> ----- Original Message ----- From: "John Huffman" <hjohnc at gmail.com>
>>
>>> I just received a new 703 microphone to use with my Orion.
>>>
>>> The audio is fine.  But, the push to talk button is very loud over the air.  You can hear the button moving when you close the circuit and when you release the button.
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