Specifications

8 / TNC GPS Upgrade Addendum

Connecting the APRS adapter cable

Once you’ve made your adapter cable, connect as described previously.

Schematic Diagram for the APRS Adapter Cable

TNC/ULTIMETER II® Stand Alone Weather Station Set Up

Connect the ULTIMETER II to the TNC following the illustrations of Figure 3, Figure 4, and

Figure 5. Once the connections are made, follow the directions below to configure the TNC.

1. Connect your TNC to your computer and get it running following the directions in Chapter

2. Type MY <your call sign>, then press ENTER. For example, if your callsign is WA7GCI,

you would enter MY WA7GCI, then press ENTER.

3. Type UN APRS via RELAY, then press ENTER. This programs your UNPROTO path to

APRS via RELAY.

4. Type GLOCtx 60, then press ENTER. This causes the TNC to transmit the weather infor-

mation every 10 minutes. The seconds can range from 0 (disabled) to 255 in ten second in-

crements.

5. Now you need to program your Btext with the day of the month, time, and your latitude and

longitude. For example: if your exact location is 47°49.14’N, 122°15.72’W and the time and

date is 9:11 AM June 23 1995, you would enter BT @230911/4749.14N/

12215.72W_Lynnwood weather station, then press ENTER.