[1000mp] Sound Card - FT1000MP

Harry Yingst ab2pn at yahoo.com
Sat May 22 15:41:50 EDT 2004


I tried the packet port then scrapped that interface since the packet
port is far to limited.

I now use the DVS-2 port instead since it is far more flexible

And Yes, all the filtering still works, and then some.


I also tried the phone patch in jack but that did not mute the Mic
line.


I have found the DVS-2 Port is the most flexible of them all.
(look up the matrix on the control lines you will understand why)

I now have far more functionality then when I just used the packet
port, plus I get all the ability to use my computer as a Voice keyer,
etc.


I did add to the circuit to allow for true FSK keying for RTTY.


I spent a lot of time researching this since the bulk of my operation
is non-voice modes.


Good Luck.









--- "Joe Subich, K4IK " <k4ik at arrl.net> wrote:
> 
> 
> > 
> > It is better to use the DVS-2 port
> > 
> 
> No, it is not ... it is better for software authors to write 
> code to allow use of LSB (which happens to be the standard 
> for digital modes going back to early RTTY) through the PKT 
> jack. 
> 
> The PKT jack permits selection of the proper receive filters, 
> the use of high tones which are significantly less like likely 
> to cause harmonic induced spurious signals, and muting the 
> microphone so that shack noises (including VHF rigs, blowers 
> and computer sounds) are not transmitted along with the 
> digital modes. 
> 
> If one *MUST* use USB, use the user mode with Yaesu's "USB 
> packet for Mars" settings: 
>       http://www.va3cr.net/pdf/packet%20for%20MARS.pdf 
> 
> 73, 
> 
>    ... Joe, K4IK 
>  
> 
> _______________________________________________
> 1000mp mailing list
> 1000mp at mailman.qth.net
> http://mailman.qth.net/mailman/listinfo/1000mp


=====
Harry - AB2PN

-


	
		
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