APRS in the National Parks (USA)

Bob Bruninga, WB4APR

OVERVIEW: The Automatic Packet Reporting System is ideal for making friends on the road during holiday travels to the National Parks and other populated but remote areas. This page evolved from my initial frustrations many years ago when visiting the Grand Canyon and not hearing anything on the National APRS frequency of 144.39 in the park.


With 4.5 million visitors a year, and .5% of them being hams, there should probably be as many as several dozen hams on any given day, but how to locate them? . From that, I realized we needed to concentrate as an APRS community on supporting APRS communications in the parks, even though most of us do not live anywhere near them. . If you visit a park and hear no APRS activity, get on the air on the local repeater and ask them why not. . OR post an email on the aprssig@tapr.org email reflector and let us know so we can update the file below.

Click here for a List of Parks with APRS

APRS on the Interstate: Also do not forget that one in every 500 people you pass is another HAM radio operator. On a busy interstate, you will pass another ham about once every 10 minutes. The best way to never miss an eyeball opportunity is to run APRS Voice Alert. With Voice Alert, you are always in voice contact with all surrounding APRS operators that are in simplex range.

Voice Contact Frequencies: Since this page was written in the 2002 time frame, we have added the entirely new dimension of Voice Frequency to APRS as well. (See the Localinfo web page). With everyone now able to include their voice operating frequency in their packets, it is much easier to find other operators. Further, the new Kenwood D710 radio can tune to these other operators with the press of the single front panel TUNE button.

Traveler Repeater Frequencies: . An additional initiative of this Frequency dimension was that all New-N Paradigm digipeaters are also supposed to beacon a Locally recommended Voice Repeater for travelers. This too alerts everyone with APRS where they can find each other and other local hams for contact.