From: Douglas Cole (yywxz.icgozqnk@newpaltz.edu)
Date: Thu Apr 04 2002 - 19:45:13 EEST
On Wednesday 03 April 2002 09:41 pm, Nick Papadonis wrote:
>
> Concerns:
> - What steps would you take in adjusting the laptop MIC + SPEAKER?
> - I have soundmodemconfig's SA and SCOPE, however am unsure what to
> look for on them. Any pointers? - I also have access to a 100MHz digital
> scope. Would this be better to use right on the trancievers speaker out? -
> What would be the steps you take getting hardware running right? I'm fine
> on the software side.
>
>
> Any suggestions are much appreciated.
Ok , here goes , back in the days when I was doing 9600 packet with tnc's ,
it was a cardinal sin to use speaker audio out of the radio , as the
deemphasis circuits in the receiver will ruin your eyepattern to the point of
uselessness ( the term "group delay" comes to mind).
In all the links I had worked with we always used discriminator out of the
radio for rx audio...
Now as I have never used the soundmodem utility yet maybe it performs some
magic that will overcome this detail , but then again ... ;^}
9600 is not very forgiving in comparison to 1200 which is very .
hth
-- Douglas Cole N7BFS Registered Linux user #188922 AMSAT#26182 k2 # 544 Spokane IRLP node owner http://www.users.qwest.net/~cdoug3 - To unsubscribe from this list: send the line "unsubscribe linux-hams" in the body of a message to udthz@coollink.us More majordomo info at http://vger.kernel.org/majordomo-info.html
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