Frequencies

2012-05-24T01:21:24Z

Ve2ddz: /* Satellites */ Echo is QRT

= APRS Frequencies =

=== Primary VHF Networks ===
* North America: 144.390 MHz ([[VoiceAlert|Voice Alert]] 100.0 Hz CTCSS, mobiles only please!)
* Europe: 144.800 MHz ([[VoiceAlert|Voice Alert]] 136.5 Hz CTCSS)
* Russia: 144.800 MHz
* Australia: 145.175 MHz ([[VoiceAlert|Voice Alert]] 91.5 Hz CTCSS)
* New Zealand: 144.575 MHz
* Argentina: 144.930 MHz
* Uruguay: 144.930 MHz (145.010 MHz also)
* Japan: 144.640 MHz 9600 baud / 144.660MHz 1200 baud
* South Africa: 144.800 Mhz

=== Alternative Input VHF Networks ===
For low-powered trackers only:
* Many areas: 144.99 MHz
* Western Washington State: 144.35 MHz

=== UHF Networks ===
* Europe / Africa (IARU region 1):
** Primary 433.800 MHz (heavy ISM interference in many countries)
** Secondary 432.500 MHz since 2008 where ISM is too bad on 433.800 (CT08_C5_Rec32)
* Australia (VK): 439.100 MHz 1200 baud (in selected areas)
* Netherlands (PA): 430.5125 MHz 1200 baud
* Puget Sound, WA: 440.800 MHz 9600 baud
* Kansas / Missouri: 446.175 MHz 1200 baud (primary, with infrastructure)
* Kansas / Missouri: 441.175 MHz 1200 baud (secondary / special event, no infrastructure)
* US Nationwide Proposed: 445.925 ([http://www.aprs.net/vm/DOS/UHFFREQ.HTM proposed by Bob WB4APR])
* New Zealand (ZL): 432.575 MHz 1200 baud allocated but little usage

=== Six Meters ===
* United States (IARU region 2):
** Primary Meteor Scatter: 50.660MHz 9600 baud
** Secondary Meteor Scatter: 50.680MHz 1200 baud
** Washington, DC: 50.620MHz 1200 baud (shared with PropNet)
** Alabama: 50.640MHz 9600 baud

=== HF Frequencies ===
Dial frequencies based on default tones used in popular packet devices.

'''30 meters, 300 baud packet, Worldwide'''
{|class="wikitable" cellpadding="1" border="1"
! !!USB Dial Frequency!!Mark Frequency!!LSB Dial Frequency
|-
!KAM, MFJ, TinyTrak
| 10.147.600 MHz || 10.149.200 MHz || 10.151.000 MHz
|-
!AEA
|10.147.100 MHz|| 10.149.200 MHz || 10.151.500 MHz
|}

=== Satellites ===
{|class="wikitable" border="1" cellpadding="1"
!Satellite||Uplink Frequency||Downlink Frequency||Alias||Mode||Status||Schedule
|-
|ISS||145.825 MHz||145.825 MHz||ARISS||1200 baud AFSK packet||Active||
|-
|PCSAT-2||145.825 MHz||435.275 MHz||ARISS or WIDE2-2||1200 baud AFSK packet||Active||
|-
|PCSAT-1 (NO-44)||145.825 MHz||145.825 MHz||ARISS||1200 baud AFSK packet||Daylight Ops Only||
|}

Satellites are subject to doppler shift and you should adjust your uplink/downlink accordingly. Doppler will make the frequency on a LEO shift as follows:
* '''2''' m ±'''3''' KHz (FM capture effect negates the need to adjust on this band)
* '''70''' cm ±'''10''' KHz
* '''13''' cm ±'''50''' KHz

== Also See ==
* [http://en.wikipedia.org/wiki/List_of_APRS_nodes List of APRS nodes]

APRSWiki - User contributions [en]

Frequencies