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Denver Metro APRS Network Analysis

April 26, 2004 19:11 thru April 27, 2004 19:54

Here is a breakdown on packet radio activity over a 24 hour period in the Denver area. This data was collected with APRS Net Spy.

The data collection is dependant on the location of the receiving station.

All data was received over the RF network, 144.390 MHz. Any stations outside of the local area have either been repeated via HF gates or I-gates onto the local RF network.

The data includes ALL packets heard. This includes original transmissions (in some cases) of packets and each repeated copy of that packet via various digipeaters.

Here is the overall picture:

Network Analysis          
Log Opened: 4/26/2004 9:01:28 PM        
Log Closed: 4/27/2004 9:46:12 PM        
Process Time:

024:44:44

        
Elapsed Seconds: 89084        
         
Packet Type Total Per Minute Per Hour Per Day Last 5 Minutes
All Packets 12172 8 492 11805 26
Position Fix 9186 6 371 8909 22
APRS Packets 6641 4 268 6441 20
Mike-E 2521 2 102 2445 2
GPGGA 2 0 0 2 0
GPRMC 70 0 3 68 0
Cse & Speed 1993 1 81 1933 0
Altitude 2655 2 107 2575 2
IDs 584 0 24 566 4
Beacons 270 0 11 262 0
Wx 4312 3 174 4182 14
PHG 1974 1 80 1915 2
         
Stations Reporting          
Total Stations 103        
APRS 71        
Mike-E 28        
GPS 4        
IDs 10        
Beacons 8        
Weather 16        
PHG 40        
         
Software Used          
unrecognized 11        
APRS/CE, Windows CE 0        
Linux aprsd server 0        
PIC - Encoder 0        
Icom radios 0        
ICQ messaging 0        
Kenwood Radio 26        
MacAPRS 0        
Pocket APRS 0        
APRS-DOS 0        
Old Ver of APRSdos 11        
Old Ver of MacAPRS 0        
Old Ver of WinAPRS 3        
APRS + SA 5        
WinAPRS 10        
X - APRS 1        
Yaesu radios (future) 0        
Experimental 0        
GPS 3        
APRS Net Spy 1        
Wide 22        
Trace 0        
UI-View 10        

 

notes:
The per minute, hour and day figures above are continuously calculated by APRS Net Spy. They are not really needed here, however they do come in handy when you only run the program on the network for an hour or two and wish to get an estimation on what activity looks like for a particular day.

I think I still have some work to do on the software used category as I'm sure there are numerous Pic and Kenwood categories on the air. I'll get right on that. :-)

Here are some graphs of this data:


Above graph shows the number of Stations transmitting each type.


This graph shows how many packets of each type were received at my station. Stations often transmit multiple types.


Above, the type of transmitting station. If properly configured, the unproto address indicates which type of software is being used to generate the APRS activity. It is hard to distinguish between Mike-E and Kenwood, so I've just lumped them together under Kenwood Radio. Also, I haven't updated the software to recognize UI-View. Guess I'll have to do that now because that system has garnered so much support.

Here are two ASCII delimited text files that should import straight into any spread sheet program that will allow you to view this data any way you choose. The first file contains the overall network data (exactly what is shown at the top of this page), the second contains summary data about each of the individual stations heard on the network during the 24 hour period.

Network_Log_04_04_27_21_46.csv - Contains overall network activity

Stations_Log_04_04_27_21_46.csv - Contains station detail. Individual packets or data shown are usually from the last packet received. Range and Bearing are computed from my QTH.

 

webmaster: Rick von Glahn, NØKKZ Last Edit: 04 Apr 2011