5
A word about power levels
Your JT-11 is custom designed specifically for the Jupiter transceiver and its power levels. When
used with the Jupiter, the RF power will automatically be lowered to approximately 20 watts
during the tuning cycle.
LDG does not recommend using the JT-11 in any other application. If you choose to do so, never
exceed 125 watts peak power input to the tuner. A minimum of 0.1 watts is required to activate
the tuner.
Required Tools:
You will need a few basic electronic assembly tools to install your JT-11:
Small soldering iron, 25-40 watts (a temperature-controlled iron is preferred)
Rosin-core or other solder intended for electronic assembly (NEVER use acid core solder for
electronic assembly)
“Solder Wick” solder removal material, or “solder sucker” solder removal tool
Medium Phillips screwdriver, small hex or star driver
Small pliers
Small wire cutters
A few words about soldering and unsoldering:
In one step, you will be instructed to “tack solder” a wire. This refers to soldering a wire end to a
pad on the PC board where there is no available hole. Simply hold the wire against the pad, heat
with your soldering iron, and apply a small amount of solder. Hold the wire in place until the
solder cools. It will help to tin the wire first, flowing solder onto the wire before soldering it into
place.
In installing your JT-11, you will unsolder two coaxial cable connections on your Jupiter; you
must remove the excess solder from these connections. You have two options: Solder Wick or a
“Solder Sucker” solder removal tool. Solder Wick is a metal braid impregnated with rosin. Place
the end of the Solder Wick against the connection to be unsoldered and heat the wick with your
soldering iron; the wick will conduct the heat to the solder connection. As the solder melts, the
wick will absorb it; cut off and discard the used end of the wick and continue until all excess
solder is removed.
A “Solder Sucker” is a spring-loaded vacuum syringe with a heat-resistant tip. Cock the spring
plunger, and press the tip against the connection along with your soldering iron. When the solder
melts, trigger the Solder Sucker; the spring-loaded syringe will pop up, drawing the molten solder
into the tip. Do this with care, as the jolt of the spring could dislodge your soldering iron. Practice
a few times with a cold iron to get the feel of it.
