EA3GCY EGV-40, Инструкция по сборке, Страница: 5 / 35

EGV-40 CW QRP Transceiver Page 5
PLEASE, READ AT LEAST ONCE AND
THOROUGHLY ALL THE ASSEMBLY INSTRUCTIONS
PRIOR TO BUILDING SESSIONS.
TIPS FOR FIRST TIME BUILDERS
Tools Required:
- Small tipped soldering of about 25-30 W rating, good quality soldering tin for electronic work, small side
cutters, wire strippers, long strippers, long nosed pliers, a sharp knife hobby "cutter”, a screw driver for
the M3 bolt, trimming tool for the IF cans.
- You need a good light and a magnifying glass to see fine print on the parts and other building details.
Instruments required:
- Multimeter, Oscilloscope (desirable but not essential). Frequency counter or HF receiver. RF power
meter. 50 ohm, 5W load. RF Generator (desirable not essential).
Soldering:
There are two important things which need to be done to ensure the successful operation of a kit. One is
getting the right part into the proper place on the board, the second is good soldering.
To solder properly, you must use the correct type of iron and the right quality of solder. Use a small
tipped soldering iron which has a bit that is short and almost pointed at end. The iron should be about
25-30 Watts (if it is not thermostatically controlled). Use only electronic type multicored solder. NEVER
use any extra flux. You should hold the hot iron in contact with both the board and component 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 second or so until the solder to flow along the lead and track to form a
good joint. Now remove the iron. The iron should have been in contact with the work piece for a total
time of about 4 seconds in all. When soldering leads going to the ground plane of the board, you will
need to preheat the union longer to get a good flow of the molten tin.
It is highly recommended to clean and remove the remaining tin from the iron tip after each soldering
(most of the holders have a sponge for this); this helps to avoid old tin on the tip and residues from
previous operations.