[TenTec] Argosy Mic

[Bob McGraw K4TAX]

Thanks Ron.   I mention this in as much as I frequently assist hams with 
mike issues.   In many cases they {Hams} seem to think if it will plug 
in it should work.  That is generally far from the total picture.   
Wiring, shield, ground are among the things which are not standard in 
ham radio systems.   Also, in many cases the output level of the mike is 
important, while in general, the mike impedance is of  little importance.

Most radios today provide a polarizing voltage on the mike connector to 
use with Electrect mikes.   If wired wrong and this voltage is applied 
to a dynamic mike the DC through the mike element or mike transformer 
will impose a magnet field that disrupts the operation of what would 
normally be a good mike.

As to mike levels, some mikes have amplifiers internally and thus lots 
of output.  Frequently the high output level will overdrive the first 
audio stage in a radio and create distortion.   Most radios employ the 
mike gain control after the 1st or 2nd audio stage.   If the first stage 
is driven into distortion, then reducing the mike gain will not improve 
or reduce the distortion.   Correctly, one needs to reduce the actual 
level out of the mike in order to remedy the issue.

73

Bob, K4TAX

On 2/5/2020 2:14 PM, Ron Notarius W3WN via TenTec wrote:
> You're absolutely right Bob, and I should have mentioned... I made that part of my search criteria, so it wasn't an issue.
>
> 73, ron w3wn
>
>
> -----Original Message-----
> From: Bob McGraw K4TAX <rmcgraw at blomand.net>
> To: Discussion of Ten-Tec Equipment <tentec at contesting.com>
> Cc: Ron Notarius W3WN <wn3vaw at verizon.net>
> Sent: Wed, Feb 5, 2020 12:46 pm
> Subject: Re: [TenTec] Argosy Mic
>
> Just make sure it has the correct connector and it is wired correctly.  That will save a lot of aggravation for all.
>
> Bob, K4TAX
>
>
> Sent from my iPhone
>
>> On Feb 5, 2020, at 11:32 AM, Ron Notarius W3WN via TenTec <tentec at contesting.com> wrote:
>>
>> I picked up a hand mike on eBay for my Argosy II / ASR-1 for about $25 and shipping a few years ago.  Works just fine.
>>
>> Just do a search, you should find plenty.
>>
>> 73, ron w3wn
>>
>>
>> -----Original Message-----
>> From: Richard C. Doolittle <houseinlittlewoods at gmail.com>
>> To: tentec <tentec at contesting.com>
>> Sent: Tue, Feb 4, 2020 9:10 pm
>> Subject: [TenTec] Argosy Mic
>>
>> I recently picked up an Argosy 2 with no hand mic. Any suggestions as to
>> what to get? I have been looking at the Heil HMM, any experience on that
>> one?
>> _______________________________________________
>> TenTec mailing list
>> TenTec at contesting.com
>> http://lists.contesting.com/mailman/listinfo/tentec
>> _______________________________________________
>> TenTec mailing list
>> TenTec at contesting.com
>> http://lists.contesting.com/mailman/listinfo/tentec
> _______________________________________________
> TenTec mailing list
> TenTec at contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec