Old Tip of the Week 7


INSTRUCTIONS ON HOW TO PROPERLY USE A LINEAR AMPLIFIER.

1.    MAKE SURE YOUR RADIO'S OUTPUT DOES NOT EXCEED THE INPUT POWER OF YOUR AMP.
       SOME AMPLIFIERS WILL ONLY ACCEPT A MAXIMUM INPUT POWER OF 4 WATTS WHILE
       OTHERS WILL ACCEPT A MAXIMUM OF 10 WATTS OF INPUT POWER.
      (WE ARE TALKING AM POWER DEAD KEY)

2.    MAKE SURE YOUR ANTENNA WILL HANDLE THE OUTPUT POWER OF YOUR AMPLIFIER.
        IF YOUR NOT SURE CHECK WITH YOUR DEALER OR THE MANUFACTURE OF YOUR ANTENNA.

3.    MAKE SURE YOU HAVE A GOOD SWR ON YOUR ANTENNA SYSTEM.
       GOOD MEANS 1.1 TO ABOUT 1.5.

4.    WHEN USING A AMPLIFIER ALWAYS CHECK THE SWR BETWEEN THE ANTENNA AND
        THE OUTPUT OF THE AMPLIFIER.  (NOT BETWEEN THE RADIO AND THE AMP.)

5.     MAKE SURE YOUR EXTERNAL SWR METER WILL ALSO HANDLE THE OUTPUT POWER OF
        THE AMP.

6.    MAKE SURE YOU HAVE A GOOD GROUND ON YOUR ANTENNA SYSTEM.

7.    MAKE SURE YOU HAVE ENOUGH VOLTAGE AND CURRENT TO HANDLE THE AMP.
       GENERAL RULE OF THUMB --IF YOU DO NOT HAVE AIR-CONDITIONING IN YOUR VEHICLE
       YOU PROBABLY ONLY HAVE A 60AMP ALTERNATOR WHICH MEANS YOU CAN ONLY
        RUN ABOUT A 150 WATT AMP.

8.    ALWAYS USE HEAVIER GAUGE WIRE THAN THE AMP COMES WITH.

9.    IF USING A AMP IN THE HOUSE ALWAYS USE A LOW PASS TVI FILTER BETWEEN
       THE ANTENNA AND THE AMP.  MAKE SURE THE TVI FILTER CAN HANDLE
       THE OUTPUT POWER OF THE AMP.

10.   REMEMBER A LINEAR AMPLIFIER IS ILLEGAL ON 11 METERS. (CB BAND)