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Updated: 10/28/2023



 
 


FM Satellite Quick Reference Guide

SSB Satellite Quick Reference Guide

Live OSCAR
Status Page

DK3WN Sat
Status Page

AMSAT-NA
Status Page

AMSAT-NA Satellite
Frequency Summary

N2YO.com Amateur
Satellite List

KA7FVV
Satellite
Audio

Amateur Radio Satellite Tracking and Info

AMSAT Argintina Tracking Site


Satellite Terms

Modes

U/v - UHF Uplink or transmit and VHF Downlink or receive. Was known as Mode B.

V/u - VHF Uplink or transmit and UHF Downlink or receive.  Was known as Mode J.

V/a - UHF Uplink or transmit and 10 meter Downlink or receive.
Was known as Mode A.
AO-7 is in this mode alternating with U/v every other day.


Tracking

AOS - Acquisition of Signal.  Start of the satellite pass and when the satellite comes above the horizon.

TCA - Time of Closes Approach.  Middle of the pass at the highest elevation.

LOS - Loss of Signal.  End of the pass and when the satellite goes below the horizon.

Azimuth - Measured in degrees around your QTH.  Picture a 360 degree circle with 0 degrees being due north, 270 west, 180 south and 90 east.

Elevation - Measured in degrees above the horizon a satellite is from your QTH.  0 degrees would be at the horizon and 90 is directly overhead.

Tracking programs will show the Azimuth and Elevation of the satellite through out the pass so you know where to point your antenna. When working portable this is approximate and helps to track via signal strength rather than precise azimuth and elevation. 

Keplerian
Elements

Keplerian Elements or Keps as they are called are a set of numbers that indicate the orbit of the satellites.  These must be updated on a regular basis for our tracking programs to be correct. Elements should be updated weekly at a minimum.  Update methods very between tracking programs.

Amsat Keps Tutorial


Frequency

Doppler Shift - The change in frequency of due to the speed of the satellite.  VHF usually does not need adjusted if using the FM satellites but on SSB the shift is more apparent on VHF.  UHF on average is 10 khz higher at AOS than the satellites transmit frequency, on the transmit frequency at TCA and 10 khz lower at LOS. 


 


Digital Amateur Radio Satellites
 

Web site with additional information on these satellites click here


IO-117 (Greencube)


UHF Uplink/Downlink: 435.310 MHz
Programs Needed: Greencube Terminal
                               Soundmodem

Great video to show setup for Icom IC-9700.

This station is still experimenting with the satellite.
 


LEDSAT 


UHF Uplink:435.310 MHZ
Downlink: 435.190 MHz
Programs Needed: Greencube Terminal
                               Soundmodem

Great video to show setup for Icom IC-9700.  Same video talks about working LEDSAT.  Same software as Greencube.

This station is still experimenting with the satellite.
 


NO-84 (PSAT)

APRS Packet
VHF Up and Downlink: 145.825 MHz FM 1200 baud
         Use Aliases ARISS or APRSAT

It is believed that this satellite has reentered.  It has been totally removed from the NASA Bare element list.

List of APRS Contacts

With an APRS handheld enabled radio you can beacon though NO-84 and see yourself on pcsat.aprs.org.  You can also sent messages to station through NO-84. 
 

ParkinsonSat (PSAT) Page


NO-104 (PSAT2)


VHF Uplink/Downlink: 145.825 MHz FM
APRS
UHF Downlink: 437.605 MHz PSK31 and SSTV (Robot 36 Format)
Telemetry: 437.605 MHz 9600 bd

PSAT2 Web Site    You Tube How to on DTMF Mode    APRS DTMF Translator

List of DTMF Contacts    List of APRS Contacts

Note: PSAT2 is in a 28 deg inclination orbit.  Northern latitudes will see very low passes.  Highest elevation pass for me in Spokane is a maximum of almost 11 degrees on a good pass.


NO-103 (BRICSAT-2)  


VHF Uplink/Downlink: 145.825 MHz FM
APRS
Telemetry: 437.605 MHz 9600 bd

BRICSAT-22 Web Site    List of APRS Contacts

Note: BRICsat-2 is in a 28 deg inclination orbit.  Northern latitudes will see very low passes.  Highest elevation pass for me in Spokane is a maximum of almost 11 degrees on a good pass.


FloripaSat-1


VBeacon: 145.900 MHz GFSK 1200 bps
UHF Uplink/Downlink: 436.100 MHz GFSK 2400 bps
Telemetry: 437.605 MHz 9600 bd

Satellite has a UHF Digital up and downlink transponder

See information here