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22-25GHz%20Amplifier


    Cluster Activity

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

    Solar data:
    SFI
    199
    A-Index
    3
    K-Index
    1
    Exp.K
    0
    Sunspots
    283
    Activity
    act
    GMF
    act
    Aurora?
    no

    My Weather

    ArrayDate:25/04/24 Time:09:29
    Temp:5.5C
    Wind Speed:0mph
    Wind Dir:270deg
    Pressure:1002.1mB
    Humidity:101%
    Dew Point:5.7C

    Got this from another Amateur but no info.....

    Seems to be power amplifier, 3 stages to bias up, Negative bias required, Drains are 1.6,1.4,1.2Ohm to ground respectively.
    Anyone got an idea on what current level it should be biased up to?!

    SMA input and WG20 output.

    Amp inside



    I made a bias board and tested to ~100mW output, no more information found but the current draw was much more than the associated output power!!











    Last page added:25/03/00 18:32
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