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ATV using LED Tx



    Cluster Activity

    Spots per uW band today:
    UK spotter or spotted only.

    Solar data:
    SFI
    76
    A-Index
    6
    K-Index
    2
    Exp.K
    2
    Sunspots
    26
    Activity
    qui
    GMF
    qui
    Aurora?
    no

    My Weather

    Date:18/11/17 Time:17:46
    Temp:3C
    Wind Speed:2.5mph
    Wind Dir:225deg
    Pressure:1017.25mB
    Humidity:118%
    Dew Point:6.6C
    UKHASnet
    ATV using LED Tx

    I modified the German designed Laser TX to drive a 1W Golden Dragon LED.

    Managed to receive my own transmission at a portable site 11km away using the German designed Photodiode Rx at 20MHz, results were not that good, sync to weak lock of the video signal.

    This time i used a photomultiplier tube as the receiver and it worked much better!
    The TX alignment was not optimised in beam heading because i set this before going /p!

    Tx 20MHz carrier FM ATV to 1W LED and 30cm Fresnel lens.
    Rx Photomultiplier tube into into a 20 > 70MHz converter, then into a Zeta 1000L sat receiver.


    Optical ATV with LEDTx













    Last page added:16/08/17 15:45
    M0DTS.co.uk