[Orion] Aux I/O

[Richard Detweiler]

hi John,

should read about 4.5 volts,  you could actually connect this directly to TX 
data on your rs232 port on the PC to transmit FSK.  ( sig ground to sig 
ground of course )

i use a 4n29 opti isolator with a resistor & Diode.  It inverts the TX 
signal,  but the menu system on the Orion allows you to invert the input as 
well so didn't have to add any other circuitry.

You know it is working when you set up FSK and you ground the FSK pin to sig 
ground and the frequency shifts.

Let me know how it works out,  I really love the FSK on the Orion, it is 
very stable and pure.

Rich
k5SF

>From: "John L Merrill" <jmerrill1 at adelphia.net>
>To: <orion at contesting.com>
>Subject: [Orion] Aux I/O
>Date: Tue, 5 Apr 2005 23:11:54 -0400
>
>Can someone measure the open circuit voltage on pin 7(FSK) of the 8 pim aux
>I/O jack? I read around 4.5 volts. Your radio should not be a real early 
>one
>but one that had the pull up resistor installed or probably one deliverd
>around Sept 03 or later.
>
>Thanks and 73,
>John N1JM
>
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