The
components in this phase are marked with letter
R in
suffix.
For
schmematic diagram and component list refer to Assembly
manual which is enclosed with your kit.
Start
with the assembly of IC1R and C2R.
IC1R is located to the right of IC3P, as per
photo.
Pay
attention of orientation of PIN1.
 Note: unlike the previously installed IC3P
(Phase 3), the IC1R comes with no visible orientation
mark. Pin 1 is located underneath the manufacturer's
logo. Position and install IC1R as per
photo.
Component placement, top
layer
Click Picture to Enlarge
Install
components marked in red, resistors R1R to R34R and
trimmer TR1.
Install USM
capacitors C5R, C6R, C7R and C8R
Note:
While installing components in this phase - escpecially
capacitors - it is extremely important to install them
as per photos. Due to the components density on PCB,
relying on component designators printed on PCB is not
recommended.
Install USM
capacitors C9R, C10R, C11R and C12R
Install NPO
capacitors C3R, C15R, C33R, C34R, C35R and electrolytic
capacitor C2R.
Install NPO
capacitors C16R, C18R, C19R, C21R, C22R, C23R, C25R,
C29R, C32R, C35R, C37R, C1? and integral circuits IC2R,
IC3R, IC4R and IC5R.
Note: Unmarked integral circuits are supplied in bag
labeled "OP IC2R to IC5R". These are NOT the NE5532's
!
Install
electrolytic capacitors C17R, C20R, C24R, C27R, C28R,
C30R, C31R, C36R and integral circuits IC6R, IC7R.
Install RL1R,
SV1PB and KP5.
PCB board,
components installed in phase 1 to 4.
Image Rejection
pre-adjustment
Connect Ohm meter between pin 2 of IC4R and
left end of resistor R16R. Adjust TR1R to 560
Ohm.
Install K1 audio gain cable. Flat two lines,
220mm of wire with 2 pin nylon connectors.
Voltage test
1. Connect 12V DC power supply to plug
DC1S.
2. Check the voltage on all pins of
IC1R.
| pin
|
voltage
|
| 1
|
2.5 V
|
| 2
|
2.5 V
|
| 3
|
2.5 V
|
| 4
|
2.5 V
|
| 5
|
1.67 V
|
| 6
|
1.67 V
|
| 7
|
0 V |
| 8
|
2.5 V
|
| 9
|
2.5 V
|
| 10
|
2.5 V
|
| 11
|
2.5 V
|
| 12
|
1.67 V
|
| 13
|
1.67 V
|
| 14
|
5 V |
3. Check the voltage of all the pins
of IC2R to IC5R.
| pin |
voltage |
| 1
|
10.80 V |
| 2
|
5.85 V |
| 3
|
5.88 V |
| 4
|
0 V |
| 5
|
1.5 V |
| 6
|
5.85 V |
| 7
|
10.95 V |
| 8
|
10.80 V |
3. Check the voltage of all the pins
of IC6R and IC7R.
| pin |
voltage |
| 1
|
5.77 V |
| 2
|
5.77 V |
| 3
|
5.77 V |
| 4
|
0 V |
| 5
|
5.77 V |
| 6
|
5.77 V |
| 7
|
5.77 V |
| 8
|
10.85 V |
Getting "on air" - first receiver
test
Connect a temporary wire between BNC antenna connector
and RX input C1R capacitor.
Connect an antenna (any band between 160m and 6m).
Connect power supply and USB cable. Connect stereo audio cable from receiver output (KP5 connector)
to audio card input.Start GSDR software.
Under PowerSDR Setup - General - Audio set your sound card audio properties, driver and mixer.
At this stage you should be able to receive signals.
G59 Image Adjustment (hardware)
The image adjustment precedure is similar to one described at http://genesisradio.com.au/G3020/a1.html
- Please scroll to the bottom of the page.
Fine tune trimmer TR1R until unwanted image is rejected as much as possible. If you have already set the resistance to 560 Ohm, then maximum rejection
will be achieved within 1 to 2 turns either way (in this particular case maximum rejection of -40 dB was at 564 Ohm).
Block
Diagram | Phase
1: Power Supply | Phase
2: Microcontroller circuit | Phase
3: Local osciallator Si570 |
Phase 4: G59 USB connection | Phase
5: G59 Receiver assembly | Phase 6: G59 Input-Output HP-LP Filters |
Phase 7: Band pass filters and control logic
| Phase 8: CW monitor
| Phase 9: Transmitter circuits assembly
|
Phase 10:
Microphone preamplifier
| Phase 11: Si570 Quasi oven circuit
| GBOX assembly
|
