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

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Date:19/11/17 Time:00:03
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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.














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