PSAT NO84

Discussion in 'Satellite and Space Communications' started by KE3LB, Dec 24, 2016.

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  1. K3RLD

    K3RLD Ham Member QRZ Page

    I just had a 70+ degree pass, and went out and "listened" for the PSK signal. I heard it sporadically (headphones only, no software to decode). It sounds like a cool system but just way too much equipment needed to use it.
     
  2. W5SAT

    W5SAT Ham Member QRZ Page

    If there is not anybody actively transmitting to it, it only occasionally activates the PSK31 . When somebody is actively transmitting, it will run continuously. It's a very strong signal.
     
  3. W5SAT

    W5SAT Ham Member QRZ Page

    This the (more or less) full beacon sequence when PSK-31 is constantly running:

    I captured this on the pass that just finished tonight.

    W3ADO-5 beacon B ØØØ 4Ø 37 782 245 +23
    W3ADO-5 beacon B ØØ1 81 38 679 231 +25
    W3ADO-5 beacon B ØØ2 87 31 63Ø 217 +25
    W3ADO-5 beacon B ØØ3 81 35 63Ø 217 +25
    W3ADO-5 beacon B ØØ4 68 23 619 215 +25
    W3ADO-5 beacon B ØØ5 68 49 6Ø9 213 +25
    W3ADO-5 beacon B ØØ6 46 25 6Ø2 211 +25
    W3ADO-5 beacon B ØØ7 68 38 597 2Ø9 +25
    W3ADO-5 beacon B ØØ8 31 28 589 2Ø6 +24
    W3ADO-5 beacon B ØØ9 65 38 587 2Ø5 +24
    W3ADO-5 beacon B Ø1Ø 31 27 581 2Ø4 +24
     
  4. K3RLD

    K3RLD Ham Member QRZ Page

    CALL beacon MODE NOF DET AGC VC IC TMP

    Where:

    CALL identification of the beacon (callsign)
    beacon keyword indicating beginning of data
    MODE A or B (A – transmitter always on, B – transmitter turns on, if BPSK31 signal is present)
    NOF number of frame (0 … 999)
    DET percentage of BPSK31 detection (0 … 99%)
    AGC percentage of AGC operation (0 … 99%)
    VC supply voltage (10 mVolts)
    IC power amplifier current (mAmps)
    TMP temperature of PA transistor (deg C)

    Stolen from:
    http://www.pe0sat.vgnet.nl/2015/psat-psk31-telemetry/

    *I went to look this up, and figured other casual observers will find it useful
     
  5. WD9EWK

    WD9EWK Ham Member QRZ Page

    Hi!

    NO-84's digipeater is back on. During the week, I had some nice midday passes where I didn't work anyone. Today, I decided to work the pass around 1825 UTC (11.25am PDT) from the Sunset Point Rest Area, about 50 miles/80km north of Phoenix along I-17. This rest area is in grid DM34we, and is the spot I go to when I want better visibility down to the horizon in most directions (except for SW, clockwise to WNW). I went here last year to work PJ6Y on SO-50 for what was a distance record at that time, and in recent weekends to work TF/NJ7H in Iceland and OX/NJ7H in Greenland on FO-29 passes.

    Unlike the passes over the past few days, I was able to make two QSOs. Both QSOs were with stations in Arizona - KC7MG in Casa Grande (between Phoenix and Tucson), and NP4JV in Nogales (at the Mexican border). I heard N0AGI-2 as NO-84 approached LOS, but it was too late in the pass for me to get a message through to that station.

    With the ISS packet digipeater more or less deaf lately (lots of RS0ISS beacons heard, but very little of anything else), it is good that we have one orbiting digipeater available for us.

    73!
     

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