[Yaesu] DVS-2 Jack interface

[becker@SPRINTMAIL.COM (Tony and Celia Becker)]

At 03:23 PM 1/11/98 -0800, Richard Stasiak wrote:
>1) Which control input (CNTL1 or CNTL2) will force the 'MP to receive
>audio from the QSOcorder? 
>
>2) What type of input voltage is necessary on the control input to
>acomplish the above?

I have interfaced the "Contest Voice Blaster" and the "SoundBlaster Digital
Voice Processor" to the DVS-2 input on my FT-990 with success.  This should
help.

No need to supply a voltage, an open collector (or drain) is sufficient.
The radio has an internal pullup.

DESCRIPTION OF FUNCTION OF DVS PORT                     
PTT  DVS0 DVS1 Function
"1"  "0"  "0"  Receiver Audio at Voice Out, Voice In muted
"0"  "0"  "0"  Voice Out and In both muted
"1"  "0"  "1"  Transmitter Mic. audio at Voice Out, Voice In muted
"0"  "0"  "1"  Transmitter Mic. audio at Voice Out, Voice In muted
"1"  "1"  "0"  Voice Out muted, Voice In signal at Receiver Audio output
"0"  "1"  "0"  Voice Out and In both muted
"1"  "1"  "1"  Voice Out and In both muted
"0"  "1"  "1"  Voice Out muted, Voice In signal at Receiver Audio output 
               and Transmitter Audio
"0" means pin at ground, "1" means pin at Vdd 

The Yaesu DVS port 
Pin# Name      Description
1    VOICE IN  Input from Sound Blaster Speaker output
2    VOICE OUT Output to Sound Blaster Mic input
3    PTT       Push To Talk control line
4    Vdd       Power Supply, +12V for FT-990 or +9V for all others.
5    DVS0      DVS control line
6    DVS1      DVS control line
7    GND       Ground


DVS port to SOUND BLASTER for use with W9CFs "SBDVP.EXE"
                to Sound Blaster Mic input-+
from Sound Blaster Speaker output----+     |
(USE A 1:1 TRANSFORMER)          +---^-----^-------+
                                 |   |     |        \>| 2N3906
                                 |   |     |          |----+-----+
                                 |   |     O        /-|    \     \ 
                       +---------+---^--O4 2 5O----+       /     / 
            2N3906  |</          |   +-O1     3O-+         \ 330 \330
                 +--|            |      O6   7O  | SW      /     /
                 \  |-\          |      |  ^  |  | ON AIR  \     \
                 /     |         |      | DVS |  | ___|    |     |
                 \ 330 |         |      |     |  +-O  O----+     |
                 /     |         |      |     |            |     |
                 \     | 2N3906|</      |     |            |     |
                 |     +-------|        |     |            |     |
                 |     \       |-\      |     |            |     |
                 |     /          +-----+     |            |     |
                 |     \ 330                  |            |     |
                 |     /                      |            |     |
                 |     \                      |            |     |
                 |     |                      |            |     |
                 |     +----------------------^-------+----+     |
                 |                            |       |          |
                 +----------------------------^-------^----------+
                                              |       |          |
                                 1000         |     |/ 2N3904    |
Printer Port pin 16, ------------/\/\/--------^-----|            |
                                              |     |\           |
                                              |       >          |
                                              |        |         |
Printer Port pin 1, Strobe--------------------^--------+         |
                                 1000         |                |/
Printer Port pin 2, D0-----------/\/\/--------^----------------| 
                                              |                |\ 
                                              |          2N3904  >
                                              |                   |
Printer Port pins 18-25-----------------------+-------------------+ 


DVS port to SOUND BLASTER for use with LTAs "CONTEST VOICE BLASTER"
                to Sound Blaster Mic input-+
from Sound Blaster Speaker output----+     |
(USE A 1:1 TRANSFORMER)          +---^-----^-------+
                                 |   |     |        \>| 2N3906
                                 |   |     |          |----+-----+
                                 |   |     O        /-|    \     \ 
                       +---------+---^--O4 2 5O----+       /     / 
            2N3906  |</          |   +-O1     3O-+         \ 330 \330
                 +--|            |      O6   7O  | SW      /     /
                 \  |-\          |      |  ^  |  | ON AIR  \     \
                 /     |         |      | DVS |  | ___|    |     |
                 \ 330 |         |      |     |  +-O  O----+     |
                 /     |         |      |     |            |     |
                 \     | 2N3906|</      |     |            |     |
                 |     +-------|        |     |            |     |
                 |     \       |-\      |     |            |     |
                 |     /          +-----+     |            |     |
                 |     \ 330                  |            |     |
                 |     /                      |            |     |
                 |     \                      |            |     |
                 |     |                      |            |     |
                 |     +----------------------^-------+----+     |
                 |                            |       |          |
                 +----------------------------^-------^----------+
                                              |       |          |
                                 1000         |     |/ 2N3904    |
Printer Port pin 3, D1-----------/\/\/--------^-----|            |
                                              |     |\           |
                                 1000         |       >        |/
Printer Port pin 2, D0-----------/\/\/--------^--------^-------| 
                                              |        |       |\ 
                                              |        | 2N3904  >
                                              |        |          |
Printer Port pins 18-25-----------------------+--------+----------+ 

AE0M, Tony Becker - becker@sprintmail.com - Silicon Valley, USA

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