[1000mp] voice recorder and cw for mark v

[Jim Smith]

Well, the reason I said "sort of" in parallel is that there is a 1K 
resistor between the Mic and the Patch inputs.  Admittedly, sort of in 
parallel is like sort of pregnant.  Perhaps I should have said that 
there is a path between the Mic and the Patch inputs.

When I first got the MkV I tried to sort out the DVS-2 circuitry.  
Unfortunately, the quality of reproduction of the schematics in the 
Service Manual is so poor that I gave up.  More recently I have seen 
info on the web about this which clarifies how it all works.  In the 
meantime, though, I have found that plugging the mic into the soundcard 
works just FB and I don't need to make or buy a box to do what I want.

Yes, the mic will pick up extraneous shack sounds, just as it will if 
you don't use a voice keyer.  The decades old solution is to not have 
extraneous noises in the shack.

For digital modes, you can turn off the mic input using the sound card 
mixer applet if you need to.

To route audio to the Patch or Pkt jack I just move a couple of patch 
cords on the patch panel which all station audio goes through.

I inadvertently found that you can shorten the time taken for your 
exchange in a 59 - serial # contest with this system by pressing the 59 
button and simultaneously speaking the serial #.  Seemed to cause a 
certain amount of time wasting hilarity on the other end, though.  :-)   

While I haven't tried it, I don't see any reason why I couldn't record 
both sides of the Q just by enabling recording in the sound card mixer 
applet (the Rx AF out goes to the sound card Line In).  Just have to 
make sure the Mic and AF out aren't on the same channel.

The other solutions are also FB.  This just happens to be the way I 
ended up doing this.

73 and thanks for the input, guys

Jim   VE7FO

Joe Subich, K4IK wrote:

> 
>  
>
>>Neither.  I connect the sound card line out to the patch 
>>input on the MkV.
>>
>>A potential problem here is that the mic input is in parallel 
>>(sort of) with the patch input.  If you have a dynamic mic, such 
>>as a Heil, you will hear your recorded messages coming out of 
>>your microphone.  Very disconcerting, especially when you can't 
>>figure out where the sound is coming from.  To get around this, 
>>I plug the mic into the mic input on the soundcard and leave it 
>>there.
>>    
>>
>
>The patch and mic inputs are more than "(sort of)" in parallel - 
>they're directly in parallel without any isolation.  If one 
>connects the sound card output to the patch input, sounds in the 
>shack can be transmitted along with voice messages (voice keyer) 
>or AFSK/PSK (digital mode).  
>
>Use an interface, there are several schematics shown on the VA3CR 
>web site, to route voice mode (voice keyer) audio to the DVS2 jack 
>and digital mode audio to the PKT jack.  Doing so will result in 
>muting the microphone when using soundcard audio.  
>
>As an alternative, use a DPDT relay to switch the front panel 
>input between the sound card output (with proper level attenuation 
>and transformer isolation) and the microphone.  The PTT (or foot) 
>switch can be used to pull in the relay. 
>
>73, 
>
>   ... Joe, K4IK 
> 
>
>_______________________________________________
>1000mp mailing list
>1000mp at mailman.qth.net
>http://mailman.qth.net/mailman/listinfo/1000mp
>
>  
>