N2VI's satellite page

This page is no longer mantained. A fuss over space debris issues has lessened my enthusiasm for AMSAT. I vote for end-of-life deorbit and believe it is more in the spirit of ham radio to investigate clever solutions, like the butane thruster flown on SNAP1, rather than fight legal battles over jurisdiction.

AMSAT charts active satellites with modes and frequencies.

       uplink               downlink
FM voice
ISS    437.800 or 144.49    145.800
AO-51  145.920 (PL67)       435.300
SO-50  145.850 (74.4,67)    436.795

beacon
AO-51  435.150 FM
VO-52  145.936 carrier
FO-29  435.795 CW telemetry
LO-19  437.125 CW LUSAT

band designations: A=10m, C=6cm, H=15m, K=1.5cm, L=23cm, S=13cm, U=70cm, V=2m, X=3cm. Uplink is written in upper case; downlink is written lower case.

Satellites are tracked optically and by radar, feeding into elaborate orbital calculations. These are summarized as Keplerian elements, or keps, coefficients in an analytical model called SGP4. For a detailed description, see Spacetrak Report No. 3 at AMSTAT or CelesTrak, a site maintained by T.S. Kelso who also implemented SGP4 in Pascal. I use a C version via the program Predict by John Magliacane, KD2BD, which is widely available on Linux (for example, "emerge predict" in Gentoo.)

Keps are currently available from AMSAT, ARRL, CelesTrak, and elsewhere, but for national security (?) reasons may eventually only be available from Space-Track.
For news of recent launches, see JSR

ISS

The International Space Station, Zarya, supports ham radio as ARISS:

145.800  ISS voice and packet downlink
145.990  ISS packet uplink
437.800  ISS voice uplink (when packet is off)
144.490  ISS voice uplink

ISS (JTrack) is the International Space Station; voice=NA1SS, packet=RS0ISS.
ISS Fan Club