[OZAPRS] TT4 Switchable?

[Gordon Taylor]

I have done this with the TT3 and "Araldited" the switch on the outside of
the DB9 that goes into the TT3.  If you use a center off DPDT you can have
an off position as well.

Regards,
Gordo VK4VP

-----Original Message-----
From: ozaprs-bounces at aprs.net.au [mailto:ozaprs-bounces at aprs.net.au] On
Behalf Of Michael Wain
Sent: Thursday, 21 February 2008 8:46 PM
To: ozaprs at aprs.net.au
Subject: re: [OZAPRS] TT4 Switchable?

Hi Geoff,

In the TT4 Tracker config software set Primary window with the 300 Baud
packet box unticked, in the 

Secondary window set 300 Baud packet box ticked, save setting, then run a
wire from pin 5 on U1 (sw1 pin ) 

to pin 4 ( unused pin ) on J1, then you can run a wire from the db9 plug
pin
4 to a switch, open circuit for Primary mode,

Ground/neg for Secondary mode. works with the tt3p but the wire on U1 pin
5
to pin 4 on J1 is already setup on the tt3p

de VK3HAU Micahel Wain

>From the Owner's
Manual....................................................................
..
..........................................................



Jumper J5 and J6

These holes are available for input or output switches. For the TinyTrak4
APRS Tracker, J5 is SW1, used to switch

between primary and secondary configurations and J6 is SW2 used to control
power to the radio or GPS
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