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TinyTrak3Plus and Maxtrac 100
Posted: Thu May 18, 2006 7:57 pm
by philn
Trying to use a TinyTrak3Plus and 2 channel 5 pin Maxtrac 100 through RJ45 mic jack. Not having much luck. Anyone have one? TT3 will transmit and gets through to radio, however never gets a carrier light on the TT and walks on other stations. Have never seen a position report either. GPS shows to work per TT. I must have a config. problem, cable or radio issue. In other words, everything could be wrong! Any help would greatly be appreciated. Thanks!
Posted: Thu May 18, 2006 10:38 pm
by kens
Sounds like you may very low or no receive audio into the TT3. As i recall you have to enable handset option in the software to get audio out of the mic jack. There is also a resistor that limits the output that may have to be jumpered on the circuit board. I had similar problems trying to get audio for a headset from that jack.
Good luck.
Kens
Posted: Fri May 19, 2006 6:31 am
by philn
Ok, thanks. Enabled the handset, but it made no difference. Any idea which resister to jump to increase the audio?
Thanks!
Posted: Sat May 20, 2006 9:29 pm
by philn
In case anyone cares to know the fix:
On the very last page of the Byonics manual it mentions the fact that TT3+ is configured for handheld radios and that the audio output will not be enough to work with mobile radios. You have to adjust the RX audio sensitivity and place a jumper on R5 to double the audio output before the TT will work with the maxtrac. I decided to run the interface leads to the logic board so that I could also provide 12+ to run the TT3+ as well as the GPS. With the ignition sense hooked up it works great.
