logo
Most Viewed Last 7 Days
146MHz RD06+RD15 Amp (114)
Detecting a Pulsar at 1420MHz? (97)
Chirp Tx with Red Pitaya - 1 (91)
500W+ 1296MHZ Amp Project (91)
EME in 2008 (85)
IPTV (85)

13cm Amplifier



    Cluster Activity

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

    Solar data:
    SFI
    70
    A-Index
    12
    K-Index
    2
    Exp.K
    1
    Sunspots
    0
    Activity
    qui
    GMF
    act
    Aurora?
    no

    My Weather

    Date:21/01/18 Time:00:04
    Temp:-3.5C
    Wind Speed:0mph
    Wind Dir:157deg
    Pressure:1009.49mB
    Humidity:118%
    Dew Point:0.1C
    UKHASnet
    13cm Amplifier

    Here is one of the easiest ways to get some power on 2.3GHz...

    Pyrojoe on ebay over in the states has some of these amplifiers removed from the larger Spectrian amplifiers.
    Power output is around 25-30Watts, power input required is only 10mW or so, prefect for the output of a Comtech 13cm ATV Transmitter.

    They look like this:

    Spectrian 30W amplifier



    Here is the connection information taken from pyrojoe's ebay listing.

    Power requirement is 13-14V @ 10A and + 18 to +28v bias @ 50Ma.
    This bias is used for the gate voltage circuit on the power control FET.
    There is a logic level enable pin which requires grounding to enable power to this amplifier and can be used for a PTT/KEY control.
    The connector also has a direct temperature output pin with the function 10.0mV/degree F which measures the board temperature close to the 30W RF output GaAs FET (NEC S2527-30).
    Note that the output of this amplifier is protected by an internal 125W isolator!
    Here are the pin functions for the DC bias connector:
    Pins 1,2,3,4 are all +12 to 13Vdc @ 7.5 or so amps.
    Pins 5,6,7,8,10 are all ground.
    Pins 12,13 are N.C.
    Pin 11 is Logic level Low enable, normally floats high. This turns on the +12v to the internal transistors.
    Pin 14 is + 26V bias supply input @ 50Ma.
    Pin 9 indicates temperature = 10mV/degree F.














    Last page added:07/01/18 10:15
    M0DTS.co.uk