de Greg-WB6FZH

ISS Frequency & Mode Information

• Worldwide DOWNLINK for Voice(FM) and Packet (1200 AX25)- 145.800mhz
• Worldwide UPLINK for PACKET- 145.99 (ISS Packet Mailbox Callsign-RZ3DZR-1)
• ITU Region 1 VOICE UPLINK- 145.200 mhz (This is NOT used in Continental USA, Hawaii or Alaska)
• ITU Region 2 & 3 VOICE UPLINK- 144.490 mhz (THIS IS THE ONE!)
• Monitor ONLY VHF FM Channel- 143.625 mhz (Mostly Russian Language)
• ISS Packet Station Keyboard Callsign- RZ3DZR (Format 1200 baud AX25*)\
• ISS Voice Callsigns: (Including, but not limited to..) NA1SS, DL0ISS, Personal Callsigns,etc.
• SSTV Format and timing will be announced prior to operation, it is likely to be Robot 36. Eventually, you will be able to uplink your picture to ISS, and have it rebroadcast as the Space Station orbits away from you.. Many "new" SSTV functions coming.

* Same as terrestrial packet.

• ISS Radio Station Reference Page- Lots of ISS Ham Radio Information.
• NASA Website- Lots of Information!
• AMSAT- AMSAT/NA "Supersite"
• W2VTM SATELLITE TRACKING- Programs, Keplerian Elements & Links
• ARRL- American Radio Relay League`
• ARISS School to ISS QSOs- Information about School contacts to ISS
• Energia Ltd. (Russian=NASA)- Russian INFO
• MAREX-NA- ISS Amateur Radio Information
• KD2BD's FREE ISS & SATELLITE Orbital Prediction Program- DOS works fine.

-(Tenative- Your mileiage will vary)

• The general schedule is around the UTC time zone. The wake-up call is around 0800UTC and quitting time is around 1900UTC. There is a "lunch break" around 1200 UTC.
• There is a "Weekend" period from 1200UTC on Saturday until about 1900 Sunday.
• NOTE: The ISS crews have been working "overtime" to try to keep up with the schedule of delivery and assembly of the new station, and have had little or no "free" time.(3/20/01)
• Possible "good times" for contacts...0800 UTC, 1200 UTC, 1900UTC and "weekend" periods- Saturday 1200 to Sunday to 1900.

- Read This BEFORE turning radio on!

• LISTEN...LISTEN...LISTEN.. FIRST!
• WAIT for the crew to call for contacts
• DO NOT monopolize the crew's time, many are waiting for their chance of a lifetime.
• DO NOT waste time asking about QSLs, National Security Secrets, UFOs, etc.
• REMEMBER.. their problem in space is that they hear EVERYTHING TOO WELL, and ALL AT ONE TIME...
• Be patient, if the signal is fading towards the end of a pass at your location, try again another day, they will not be slowing down to talk to you,
• NOTE: The "DOPPLER EFFECT" means that the frequency of the space station willchange slightly as it passes by your location. It is usual to adjust the "downlink" frequency slightly on your receiver (if it is variable).
• Be "READY" for your attempts to contact ISS. A few minutes BEFORE your orbital prediction program says ISS is approaching, have your station all ready to go, with notes, log, and even audio tape to record your activity.
• Listen First, DO NOT transmit unlessyou can CLEARLY hear ISS, otherwise you may interfere with stations you may not be able to hear.
• Know the limitations of your radios and antennas.

• "PREDICT"- DOS program
• Thanks! to John Magliacane, KD2BD
• HAMSAT KEP FILE

Last Updated: March 28, 2001FZH