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  • AMSAT-BB-digest V14 283

    From CX2SA@21:5/101 to SATDIG on Sat Jul 27 16:50:20 2019
    R:190727/1944Z 25928@LU3DVN.USH.TDF.ARG.SOAM LinBPQ6.0.17
    R:190727/1934Z 33985@N3HYM.MD.USA.NOAM BPQ6.0.18
    R:190727/1941Z 21457@OK2PEN.SP.BRA.SOAM [Sao Jose dos Campos] $:AMSATBB14283 R:190727/1935Z @:CX2SA.SAL.URY.SOAM #:10850 [Salto] FBB7.00e $:AMSATBB14283

    From: CX2SA@CX2SA.SAL.URY.SOAM
    To : SATDIG@WW

    Today's Topics:

    1. SatPC32 Not responding with 9700 (Richard Lawn)
    2. Re: Antenna Question (Zach Metzinger)
    3. Re: No TLM on AO-85 pass 2226z 24JUL2019 (Burns Fisher)
    4. Re Antenna Question (Brad Smith)
    5. Re: Re Antenna Question (k6vug@?????????.????
    6. Re: First DTMF grids via PSAT2 (Robert Bruninga)
    7. Might be the last update for DSLWP-B Lunar-Oscar-94 (???)
    8. Re: New Handheld for SO-50 (Ron VE8RT)
    9. Re: New Handheld for SO-50 (Robert Bankston)
    10. SatPC32, PSTRotator and 360 Degree Rotators (John)
    11. Re: SatPC32, PSTRotator and 360 Degree Rotators (John)
    12. Re: New Handheld for SO-50 (Ron VE8RT)


    ----------------------------------------------------------------------

    Message: 1
    Date: Fri, 26 Jul 2019 18:06:49 -0400
    From: Richard Lawn <rjlawn@?????.???>
    To: Amsat BB <amsat-bb@?????.???>
    Subject: [amsat-bb] SatPC32 Not responding with 9700
    Message-ID: <CADQmrTEvsXF_mE51XeTDqDYpZtv6pzni7NtLyo+KNc3AaCzsJA@????.?????.???> Content-Type: text/plain; charset="UTF-8"

    All was well until suddenly SatPC32 started to not respond and lock up. I'm using Win 10 with the most current version of SatPC32 and the Icom 9700. I
    left the station for about a week but have made no changes since all last worked. Any suggestions? Uninstall SatPC32 and reinstall it?

    Rick, W2JAZ


    ------------------------------

    Message: 2
    Date: Fri, 26 Jul 2019 17:19:16 -0500
    From: Zach Metzinger <zmetzing@?????.???>
    To: amsat-bb@?????.???
    Subject: Re: [amsat-bb] Antenna Question
    Message-ID: <ea48d946-7194-e0d5-9b12-ad9db11a6a55@?????.???>
    Content-Type: text/plain; charset=utf-8; format=flowed

    On 2019-07-26 17:04, Greg D wrote:

    There is also the effect of the reflection off the Earth that can add
    3db to your received signal on low passes. I believe this is well used
    by EME operators. But I don't think that fully makes up for the
    distance penalty. There is also the effect that the satellite's
    radiation pattern isn't necessarily equal in all directions, and other
    than the ISS, most are tumbling somewhat at random. That, I think,
    could be the main cause of the different signal reports.

    Hello Greg,

    Using the calculator over at pasternack.com for 70cm:

    2000 mile Free Space Path Loss: 155.4 dB
    400 mile Free Space Path Loss: 141.4 dB

    I suspect he's referring to audio loudness, since the FM threshold
    effect would be in play once the CNR was > 8dB (assuming narrowband FM).

    --- Zach
    N0ZGO


    ------------------------------

    Message: 3
    Date: Fri, 26 Jul 2019 18:50:50 -0400
    From: Burns Fisher <wb1fj-bb@??????.??>
    To: Hasan al-Basri <hbasri.schiers6@?????.???>
    Cc: AMSAT-BB <amsat-bb@?????.???>
    Subject: Re: [amsat-bb] No TLM on AO-85 pass 2226z 24JUL2019
    Message-ID: <CABX7KxVxV5xnwwvM-ugOCkXzVUYd0b2rRWQz=xBj5Uqs3tNzPQ@????.?????.???> Content-Type: text/plain; charset="UTF-8"

    Thanks for checking, Hasan. As Mark said, COR is a fallback mode designed
    into the Fox satellites for when the IHU is not operating for whatever
    reason. There have been times when the IHU decided to reset, and a QSO continued on across the reset unhindered (I've heard the audio
    recording--it was pretty cool!)

    73,

    Burns WB1FJ (Fox software lead)

    On Thu, Jul 25, 2019 at 5:50 AM Hasan al-Basri via AMSAT-BB < amsat-bb@?????.???> wrote:

    Thanks Mark, I should have mentioned voice ops were perfect. I just wanted
    to make sure I wasn't using the bird when I should not have been.