G8JNJ

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G8JNJ
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  • OpenWebRX [using a transverter/down-converter with the Kiwi]

    G8JNJG8JNJ
    Hi Lonecrow,

    If they are fairly short patch cables it won't make much practical difference. Ideally you would use the correct impedance throughout, but it's less critical for receive only purposes.

    … (more)
    Lonecrow

  • OpenWebRX [using a transverter/down-converter with the Kiwi]

    G8JNJG8JNJ
    Hi Lonecrow,

    Yes you can use the airband and FM band filters together, if the airband filter is good enough you may not need the FM band notch.

    I think the reason you don't see it with the dongle and… (more)
    Lonecrow

  • OpenWebRX [using a transverter/down-converter with the Kiwi]

    G8JNJG8JNJ
    Hi Lonecrow,

    I think the problem could be a very strong out of band VHF Digital TV signal that is being down-converted to a frequency that is being aliased by the KiWi to the frequency range you are… (more)
    Lonecrow

  • OpenWebRX [using a transverter/down-converter with the Kiwi]

    G8JNJG8JNJ
    Hi Lonecrow,

    Looking at the spectrum and using the new peak hold function, the noise has a fairly well defined 'shape' that could possibly be a VHF Digital TV transmission using the ATSC standard.

    I… (more)
    Lonecrow

  • Last Spectrum persists when all signals removed [fixed in v1.279]

    G8JNJG8JNJ
    Hi John,

    Brilliant :)

    Makes spotting and determining the amplitude of fleeting signals much much easier.



    Thanks for this (and all the other stuff too).

    Regards,

    Martin - G8JNJ
    KA7U

  • Denoiser and Autonotch tick boxes not working on main audio control panel [fixed in v1.278]

    G8JNJG8JNJ
    Hi John,

    Thanks for fixing it.

    I only accidentally noticed it when I realised that the auto notch was no longer removing a strong carrier.

    Regards,

    Martin - G8JNJ
    WA2ZKD

  • Any Ideas [AM BCB overload]

    G8JNJG8JNJ
    Some of the 5GHz link kit I've had problems with in the past used Power Over Ethernet which was very noisy. In fact any POE kit seems to generate a lot of unwanted noise. This is a major issue with… (more)
    Lonecrow

  • GPS Problems

    G8JNJG8JNJ
    Does the KiWI GPS antenna work OK with your other GPS receiver ?

    Is the KiWi GPS antenna placed on a metal surface ? This helps because the antenna was designed to sit on a motor vehicle roof which… (more)
    k5khk

  • On-Line frequency database

    G8JNJG8JNJ
    Copied from UDXF@groups.io

    "You may or may not be aware that the ITU monitoring stations publish their
    listening logs on their public website:

    https://www.itu.int/en/ITU-R/terrestrial/monitoring/Pages/    … (more)
    G0LUJWA2ZKDHB9TMCKA7U

  • Advice on sharing RX antennas with 3 SDRs in the most effective way

    G8JNJG8JNJ
    Be careful regarding some of the commercial active splitters. Their IMD performance is not that good as they often use MMIC chips that can only achieve modest performance.

    For example the Elad unit… (more)
    PowernumptyHB9TMC