gdt's notes on APRS in Massachusetts

Table of Contents

1 Introduction

This page has notes on APRS in Massachusetts, primarily to organize them for myself. It is not a tutorial or introduction on APRS.

The viewpoint is from using APRS for emergency communications, including search, and thus considers how well handheld transceivers with lame (as supplied) antennas work.

2 Reference

3 Digipeater Status

3.1 WIDE1/WIDE2

Local digipeaters seem to be somewhere from partly to mostly converted to the "NEW-N" scheme:

3.2 Massachusetts

3.2.1 individual digipeaters

  • W1XM, MIT, Cambridge (MIT UHF Repeater Association)
    • WIDE, WIDE1, RELAY (does not announce aliases).
    • Fill-in ("only gates packets heard directly and not otherwise

    heard by one of the local WIDEn-n gateways").

3.2.2 CWOP stations

Stations are typically interesting because they transmit on RF (CWOP is not necessarily ham radio), but also if they are in interesting locations.

4 Things to understand

4.1 aprs.fi icons

Some digipeaters have D, some L, and some S. What does this mean?

4.2 aprs.fi RF only

I'd like to see all RF stations but no stations that are IP only. It is not clear how to set up filters for this.

4.3 APRS-IS last hop

It would seem that the last RF station should have a *, but perhaps that's a transmit-to-rf operation, not a relay operation.

Footnotes:

1 DEFINITION NOT FOUND: 123

Date: 2011-12-20 20:15:37 EST

Author: Greg Troxel

Org version 7.7 with Emacs version 23

Validate XHTML 1.0