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[aprssig] PK-12 help please

Folgedalen, Robert L robert.l.folgedalen at boeing.com
Sat Feb 9 19:04:32 UTC 2008


> Hello all. Help needed!
> 
> I have an AEA PK-12 TNC. It was used successfully with the old gps
> receiver.
> 
> Wired to a new gps receiver:
> https://www.argentdata.com/catalog/product_info.php?products_id=85&osC
> sid=r70miftmltceuj1g0fse7kq2m0
> 
> 
> TNC instructions are:
> MY K7IOC-9
> UN GPSMV VIA WIDE1-1,WIDE2-1
> GLOC 12
> GNMEA1 $GPGLL
> GNMEA2 $GPVTG
> GPSM 1
> Beacon Every 12
> 
> The result of the above according to a local web site was:
> 2008-02-03 18:44:14 UTC:
> K7IOC-9>GPSMV,GPSMV,WIDE1-1,WIDE2-1,qAo,N7JGX-10:K7IOC [Unsupported
> packet format]
> 2008-02-03 18:48:14 UTC:
> K7IOC-9>GPSMV,GPSMV,WIDE1-1,WIDE2-1,qAo,N7JGX-10:K7IOC [Unsupported
> packet format]
> 2008-02-03 18:50:21 UTC:
> K7IOC-9>GPSMV,GPSMV,WIDE1-1,WIDE2-1,qAo,N7JGX-10:K7IOC [Unsupported
> packet format]
> 
> The above TNC instructions are per the manual (except replaced "RELAY"
> with GPSMV to display a car) and added the Beacon. With Beacon at
> zero, the TNC would not key the transmitter at all.
> 
> When I have the TNC connected to the computer, am able to decode
> packets coming off the air.
> 
> Radio is set to 144.390
> 
> I have connected the TNC to the GPS as follows:
> TNC			GPS
> RXD			pin 2
> TXD			pin 3 
> +5 vdc		pin 4
> Ground		pin 5
> 
> Per the GPS supplier:
> Pin 2: TX data (from GPS)
> Pin 3: RX data (to GPS)
> Pin 4: +5 volts (80 mA)
> Pin 5: Ground
> 
> So, I don't know if I am missing some option on the TNC or have not
> set one correctly or if I have it miss wired to the gps rx. Can anyone
> out there help me?
> 
> 
> Regards,
> Lee K7IOC
> 
> 




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