[TenTec] [orion565] Electret Microphone "plopping/clicking"

[Peter Frenning [OZ1PIF]]

Peter Frenning [OZ1PIF] skrev:
> Martin skrev:
>   
>> I bought a chinese headset for $2 and want to try it with my Orion I 
>> because the initial tests with sound card on Skype were very good. This 
>> headset has an electret mic and a conventional 3.5 mm jack for the sound 
>> card input. I am not a keen phone op but I became curious how will it 
>> work. Anybody tried such cheap headset to hook up to Orion (4 pin mic 
>> conn.)? How to wire it?
>>
>> 73,
>> Martin, OK1RR
>>   
>>     
> Hi Martin,
> Computer head-sets/microphones are normally wired such:
>
> Sound Blaster Microphone Input
> or such:
> **
>
>        / \ 
>        |   |   Audio signal
>         \ / 
>        +===+
>        |   |   Bias voltage for microphone (+5V through 2.2 kohm resistor)
>        |===|
>        |   |
>        |   |   Ground
>        |   | 
>      +=======+
>
>      |       |
>
> **
>
> and yes, I've hooked up a very cheap Labtec 203 head-set to my Orion 2, 
> with excellent result (apart from the "plopping" and low audio volume, 
> that is)
>
> BTW: Thanks for CQRlog!!!! use it every day almost (for those not in the 
> know: CQRlog is an excellent general purpose log program for Linux, 
> written and maintained by OK1CQR and OK1RR)
>
>   
Sorry forgot about the poor graphics capabilities of the reflector, you 
can see it much better here:
http://www.epanorama.net/circuits/microphone_powering.html#soundcard

-- 
Vy 73 de OZ1PIF/5Q2M, Peter

** CW: Who? Me? You must be joking!! **
email: peter(no-spam-filler)@frenning.dk
http://www.frenning.dk/oz1pif.htm
Ph. +45 4619 3239
Snailmail:
Peter Frenning
Ternevej 23
DK-4130 Viby Sj.
Denmark
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