17.0°E Amos-17

  • I checked 13.4-13.75GHz in February and more recently. The method of comparing a scan to clear sky noise is quite sensitive but I have not found a hint of a signal. I was using an RHCP feed so should see V & H, although 3dB down. The attached plot just shows a slight increase from the base line due to a little ground noise.


    Amos 17 is supposed to have a European beam, possibly steerable, but I guess no-one has a use for it. Is there anyone further south that has seen anything?

    Images

    1.2m Prodelin 1224 az-el with one of:
    S: Helical feed, 0.8dB NF LNA, X: 1.2dB NF LNA, conical feed,
    Ku wide band: corrugated conical feed, 1.5dB NF LNA, Ku (Standard): Octagon OSLO mod for C120 & ext ref Prodelin feed.

    Ka: Gilat ex-ODU PLLs Gilat feeds, Ka 18-26.5GHz: Patriot feed, home made 4dB NF LNA, Ka DSN: Corrugated conical feed, home made 3dB NF Down-Converter

    1.5m IRTE, Polar mount with Octagon OSLO mod. C120, IRTE feed
    40km East of London, UK

  • Nothing for me in spectrum, using 1.8m and chinese Extend Ku LNB. :126:


    [SIZE=1]/edit: nothing else can be found in spectrum (tried 70.5°E to 27.5°W)[/SIZE]

    Location: Rastatt, Germany
    C-band: 55.5°West-68.5°East ORBITRON O-16 (4,9m)
    X-band: 17.8°W-60.2°E KATHREIN CAS 120 (1,2m)
    Ku-band: 61.0°West -83.0°East KATHREIN CAS 23 (2,2m)
    Ka-band A/B/C/D: 30.0°W-75.0°E KATHREIN CAS 018 (1,8m)
    Ka-band band A 2x KATHREIN CAS 120 fix on 19.2°E and 42.0°E
    Ku-band LNB: Invacom SNF-031
    C-band LNBs: Kaonsat, C-Panorama 13K, Norsat 8000RI C-DRO, BrasilSat LNBF AP30 PLL
    Ka-Band LNBs: Inverto Twin WHITE Ka Circular Dual Polarity LNB (flange), Inverto IDLK-SINL20-KAKU-OPP,MCL-KP04, Norsat 9000HX-O3B-BN, Orbital LNB1825F-1000D-WF55
    X-band LNB: Norsat X1000HAF
    Feeds: Invacom ADF_10 + 2 rings, XMW Ka-band Feed FD9000K
    Waveguide Polariser: AV-COMM
    Tuner: TBS 6925, TBS 6903, TBS 6903X, TBS 6522

  • Quote

    Original von qwer
    [SIZE=1]/edit: nothing else can be found in spectrum (tried 70.5°E to 27.5°W)[/SIZE]


    If you want test the LNB, try https://www.satellitescommunit…d=&postid=38590#post38590
    You may just be able to detect it using CS. Set CS to not auto-range, with 1dB/div, and look for a small increase in noise level. The carriers at the centre of the humps are easily found using an SDR. USA-139 is inclined by about 8.5 degrees so can be hard to locate.
    https://www.n2yo.com/?s=25336

    1.2m Prodelin 1224 az-el with one of:
    S: Helical feed, 0.8dB NF LNA, X: 1.2dB NF LNA, conical feed,
    Ku wide band: corrugated conical feed, 1.5dB NF LNA, Ku (Standard): Octagon OSLO mod for C120 & ext ref Prodelin feed.

    Ka: Gilat ex-ODU PLLs Gilat feeds, Ka 18-26.5GHz: Patriot feed, home made 4dB NF LNA, Ka DSN: Corrugated conical feed, home made 3dB NF Down-Converter

    1.5m IRTE, Polar mount with Octagon OSLO mod. C120, IRTE feed
    40km East of London, UK

  • Since Amos-17 gives no results yet, maybe NASA's inclined TDRS relay satellites are worth a try? They use downlink band 13.4...14.05 GHz.
    In a quick search I found this pdf with detailed specs:
    https://ntrs.nasa.gov/archive/….nasa.gov/20180003065.pdf
    Visible from W. Europe are:
    11.4°W incl. 5.5° TDRS-13
    41.0°W incl. 4.6° TDRS-12
    46.0°W incl. 14° TDRS-6
    49.0°W incl. 14° TDRS-3
    62.4°W incl. 7.5° TDRS-9

    Location: Oss, NL, 5.5°E 51.8°N. Rx: Dr.HD F16, TBS 5927.
    Laminas 120cm 1°W...68°E, T-55 9/13/19/23/28/39/42/45°E.

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