FREQUENCIES

PRIMARY VHF NETWORKS

North America: 144.390 MHz (Voice Alert 100.0 Hz CTCSS, mobiles only please!)
Europe: 144.800 MHz (Voice Alert 136.5 Hz CTCSS)
Russia: 144.800 MHz
Australia: 145.175 MHz (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

50 MHZ

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

	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

Satellite	Uplink Frequency	Downlink Frequency	Alias	Mode	Status
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 :

2m ±3KHz (FM capture effect negates the need to adjust on this band)
70cm ±10KHz
13cm ±50KHz

Also See

* http://en.wikipedia.org/wiki/List_of_APRS_nodes List of APRS nodes