[WT-support] SSB voice keyer question?

[f6gox]

F6GOX -> F8CRH => Voir sur le site www.microham.com et le micro KEYER 
... tout y est expliqué!
73 Laurent

Olivier F5MZN a écrit :

> f8crh wrote:
> 
>> Bonjour,
>>  
>> Je viens de tester sur un tx et sa charge 50ohms!! le voice Keyer de 
>> win-test excité par une carte son. En monitoring ça à l'air QRO!
>> J'ai également poussé le vis à laisser branché ma pastille HC5 sur 
>> l'entrée micro du PC et à exciter via un transfo d'isolement 600 ohms 
>> le tx par la sortie HP de ma carte son > Ça semble également QRO en 
>> monitoring!!
> 
> 
> Do you mean that you always have the mic connected to the rig through 
> the sound card? Maybe not a good idea, as if you must reboot your 
> computer for any reason, you will not be able to transmit untill reboot 
> is finished.
> 
> To minimize the RF feedback problems and have the best sound quality, 
> the best way is to have a "phone" transformer IN and OUT of the sound 
> card and some relays to commut between soundcard and real microphone. 
> Use a plastic box, or isolated connectors (ground must not be common 
> between soundcard and microphone).
> 
> Anyway I've no experience in SO2R using the soudcard as a voicekeyer. I 
> usually have an external MFJ one, connected to the "main" radio. So 
> that, the SO2R box only switch mic on "radio 1" or "radio 2". First 
> times that I operated SO2R, I did even not have a switch for the 
> microphone, the heil soundset was connected to radio 1 and an hand-mic 
> was connected to radio 2. This solution is not very practical and there 
> is a disadvantage: one can sometimes transmit accidentally on the two 
> radios at once without realizing it, however it is a rules violation!
> 
> 73,