ozQRP MST3 Construction And Operation Manual page 29

Step 2: Resistors
The resistors are all 5% ¼ watt types with easy to read colour bands.
If in any doubt about reading resistor values measure them with a multimeter first.
Pass the pigtails through from the top and bend out slightly underneath to hold them in place.
Turn the PCB over and press down slightly to press them against the surface and solder. Cut off
the excess pigtail with side cutters.
It is easier and less confusing to install a group with the same value rather than to cover a
section of the PCB with mixed values. You will also find it more convenient to install 5 or 6
resistors at a time rather than inserting them all before soldering as the pigtails will more than
likely get in the way.
Step 3: Diodes
Note the positive or Cathode end before installation. The small Zener diodes look like signal
diodes so make sure you don't get them mixed up. You may need a magnifier to identify them
correctly. Form the leads before inserting to reduce stress on the body when pulling through the
PCB.
The diodes are identified
with a band printed on the
case at the Cathode (+) end.
MST3 Construction and Operation Manual – Issue 1
Cathode (+) end Zener
1N4148
1N4004
Page 29