[W4FHU] Digital mode interface update

[Joel]

Hi Gang,

 I was thinking about the Digital Mode interface project for next month's
meeting.  The design will insure complete radio/computer isolation and is
the best interface in most situations.  So far there had been a LOT more
interest than I ever thought and that gets me excited!..  

 

The interface we will be building at our next meeting is the inner-workings
of the digital mode interface only and does not include the cables and
connectors for the radio and computer and also don't include a box.  All
these 'extra' parts and pieces can be gathered from other sources and radios
have different connectors, so I didn't include any of this..  But I don't
want anyone to build this interface and not be able to get it completed and
on the air!

 

What I propose is to offer the interface in a few different flavors.  This
is cutting the costs as close as I can.

 

Original digital mode interface kit --  $5.00 

-          2 -  matching transformers.

-          1 -  opto-isolator chip 

-          1-  resistor

-          1 -  pot

-          1 - led

-          1 - capacitor

-          1 - perfboard.

-          2 - diodes

-          Instructions and hands on help.

 

Additional options:

Interface to computer cables and connectors --  Add  $10.00

-          2 metal 3.5mm soundcard plugs

-          1 DB-9  Serial port connector

-          1 DB-9 connector cover

-          2  24 inch lengths of shielded cables for the sound card cables. 

-          1 36 inch cable for the serial port

-          Instructions and hands on help if needed.

 

Interface to radio and predrilled box - Add  $7.00

-          Special radio to interface connector(s)  Some radios take 2 or
more connectors and will be included for your radio)

-          36 inch radio to interface cable

-          Pre-drilled plastic box with cover.  Includes all needed screws
and spaces.

-          Instructions and hands on help if needed.

 

So a complete kit will be a total of  $22.00 and I guarantee it WILL work
with your radio or your money back!.. All the above is available to club
members.  As I said, these prices are right to the bone and I'm not trying
to make any money off the club or it's members.  If you look on-line or
Radio Shack, you will pay at least double for maybe less quality parts.  

 

Remember, I need to know what you want by the end of this month as some
parts are hard to find for the price.  Also, if you are wanting the kit
option that includes your radio connector, I need to know the radio model so
I can get the proper connector(s).

 

Exciting times ahead for sure,

 

Joe Loucka  AG4QC

 

 

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