Questions for AMSAT Experts

Discussion in 'Satellite and Space Communications' started by NN5RR, Jan 14, 2010.

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  1. NN5RR

    NN5RR Ham Member QRZ Page

    Hi all,

    I'm the faculty sponsor for our Radio Club here at my high school, and I'm wondering what sats other than AO-51 can be counted on to have FM voice traffic on most flyovers. If you're feeling ambitious, can you please also list some sats that usually have telemetry data going and some that have usually active BBS's? Thanks!

    Also, for you G5500 rotator people: We're having trouble calibrating the azimuth position as detailed in the Yaesu instructions. After setting each end of the 360 deg. range, the needle doesn't properly show the angle as it's moved around by the controller.

  2. W9GB

    W9GB Ham Member QRZ Page

    Ross -

    You can keep up-to-date on the status of all Amateur Radio satellites at the AMSAT-NA web site.
    You just need to go to the correct web page.

    Operational OSCAR Satellite Status Summary

    AMSAT Online Satellite Pass Predictions

    Keplerian elements - Downloads, for computer prediciton prgrams

    RECENT NEWS in past 2 weeks.
    AO-51 is back in to it's normal configuration between January 4 - January 31:

    FM Repeater, V/U
    Uplink: 145.920 MHz FM
    Downlink: 435.300 MHz FM (570 mw)

    9k6 BBS and Telemetry
    Uplink: 1268.700 MHz FM
    Downlink: 435.150 MHz FM (450 mw)
    The Chinese HO-68 (Hope/XW-1) has at least 2 operational passes each day over North America.
    The best pass (North to South) for Texas is in the morning (~ 10 AM to Noon).
    As I type this, you will have a pass in about 15 minutes.
    The beacon (70 cm) is LOUD and the Chinese have an operational schedule,

    Chinese AMSAT web page (Schedule on left margin):

    When the satellite is in SUNLIGHT (not eclipse) you can find the satellite
    in either: FM repeater mode OR in SSB/CW linear transponder mode. The CW beacon is always ON !
    Here are specifics:

    Mode V/U (J) FM Voice Repeater (30 dbm (1 w) Currently Scheduled Operation): Operational
    Uplink: 145.8250 MHz FM, PL 67.0 Hz.
    Downlink 435.6750 MHz FM

    Mode V/U (J) Linear Transponder (Inverting) (30 dbm (1 w) Currently Scheduled Operation): Operational
    Uplink: 145.9250 - 145.9750 MHz SSB/CW
    Downlink 435.7650 - 435.7150 MHz SSB/CW

    Mode V/U (J) PacSat BBS (30 dbm (1 w) Currently Scheduled Operation): Operational
    Uplink: 145.8250 MHz AFSK 1200 BPS
    Downlink 435.6750 MHz AFSK 1200 BPS

    Mode Beacon (23 dbm (200mw)): Operational
    Downlink 435.7900 MHz CW

    AMSAT-NA Life member
    When AMSAT OSCAR 6 was launched in October 1972, our high school club faculty sponsor --
    Bruce Pickering KD7HTN made sure we could hear (and work) that satellite!
    I was studying for my Novice license when it was first launched.
    Last edited: Jan 14, 2010
  3. W9GB

    W9GB Ham Member QRZ Page

    Feel free to post this question on the AMSAT-BB mail reflector (sign-up on the AMSAT-NA web pages) --- hundreds of satellite ground stations and users for that quesiton.

    I would recommend that you contact the AMSAT Education and State Coordinators -- for additional assistance.
    Bruce Paige, KK5DO and Keith Pugh, W5IU are very good Texas resources for AMSAT and satellite help!


    Keith, W5IU reports that AMSAT will have a strong presence at the
    Cowtown Hamfest in Fort Worth, TX, on 15 and 16 January 2010.
    AMSAT will maintain a booth both days of the event.

    Also Douglas Quagliana, KA2UPW/5, will have two hours of forum time on Saturday afternoon to present an
    "Introduction to Amateur Radio Satellites" and monitoring the health of satellites by capturing and decoding telemetry.
    Douglas is very knowledgeable in both of these areas and is an excellent speaker.

    Live demonstrations of communications through the current satellites, including the new ones, will take place on both days.

    This Hamfest is sponsored by the Lockheed Martin Amateur Radio Club. Additional details are available at:
  4. W9GB

    W9GB Ham Member QRZ Page

    The Chinese HO-68 (Hope/XW-1) satellite had a favorable pass (South - North) last night [Jan 16] --
    while the satellite was in eclipse.
    Even thought the transponder/repeater was turned OFF [Preserve batteries] ---
    the CW beacon still operates -- and was copied on a vertical antenna (with some fading).

    The beacon is a good test for your satellite station setup -- and you get at least 1 good operational pass -- about the same time everyday!
    For North America, this "good pass" is in the morning ---
    today (Sunday, Jan 17) that was between 10:30 and 11:00 AM CST

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