ILER-DDS V2.1 VFO/DDS.
Page 4
PART ONE:
ASSEMBLY AND INSTALLATION
PLEASE READ THOROUGHLY ALL THE MANUAL AT
LEAST ONCE BEFORE ANY WORK IS DONE.
TIPS FOR FIRST TIME BUILDERS
Tools required:
- Small tipped soldering iron of about 25-30 W rating, small side cutters, wire strippers, pliers, long nosed
pliers, sharp hobby knife, and screw driver for the M3 bolt.
- You will also need good lighting and a magnifying glass to read the fine print on some parts.
Instrumentation required:
- Multimeter. Frequency Counter or calibrated HF receiver.
Soldering:
There are two important things which need to be done to ensure the successful operation of a kit: one is
to put the right part into the proper place on the board; the other is good soldering.
To properly solder you must use the correct type of iron and the right quality of solder. Use a small tipped
soldering iron whose bit is short and pointed at the end. The iron should be about 25-30 W (if it is not
thermostatically controlled). Only use multicored solder for electronics. NEVER use any extra flux. You
should hold the hot iron in contact with both the board and the part lead for about two seconds to heat
them up. Then, keeping the iron in place, touch the solder onto the junction of lead and track and wait
about two seconds or so until the solder flows along the lead and track to form a good joint. Now remove
the iron. The iron should have been in contact with the part and circuit track for a total time of about 4
seconds. It is a good idea to drag the tip of the iron up the component lead as you remove it from the
joint, this helps to pull any excess solder up with it and enables good flow along the component lead.
