EA3GCY EGV-9B v1, Assembly Manual

Page: 21 / 35

EGV-9B
80 to 10m QRP CW Transceiver Kit Page 21
 R
otary
E
NCODER,
P3 RX
attenuator potentiometer,
P4
volume potentiometer, UP-
DOWN band switches and external connections
J
acks, (antenna, speaker, headphones, power
supply) and the speaker-headphone
S
witch
Now mount and solder the Rotary Encoder, the P3 RX attenuator potentiometer (marked B1K) and UP
and DOWN BAND switches on PCB in their respective locations.
Wire the volume potentiometer P4 (marked B10K) so that you can install it in the chosen box. The P4
potentiometer incorporates a switch to use it as ON/OFF (wire it to J1).
Place and solder the antenna
and power supply jacks, headphones and speaker jacks, and the speaker-headphones switch.


 IF
Crystal filter
plug-in module
The IF crystal filter is mounted on a plug-in board. This allows for easy experimentation.
Also in the future you can exchange other filter modules with different characteristics.
The PCB and components are in a separate bag. Place and solder the parts on board:

QFL is BC547

RFL is 1K5 resistor (brown, green, red)

CFL1, CFL2 and CFL3 are 390p capacitors (marked 390 or 391)

XFL1, XFL2 and XFL3 are 4.915MHz crystals.
The spacers to screw the board are 10mm. See the images.
Extra-long strips of pins are used. Before soldering you should pay close attention to how tall the pins
should be to accommodate the position of the plug-in board.

First put the board in place no solder pins.

Insert the pins from the top side of the PCB and push them all the way into the sockets.

Now you can solder on the top face on PCB. Use a fine tip soldering iron very carefully and
solder below the plastic strip.
See the following images: