|Phase 6: G59 Input-Output HP-LP Filters, antennuator and preamplifier
components in this phase are marked with letter
Install inductors L1N, L2N, L3N and L4N.
Note: All inductors installed in phase 6 and phase 7 should be soldered 3 to 4 mm above PCB.
Install USM capacitor C2N and NPO capacitors C1N, C3N, C4N, C5N.
Install 3 pin header SV1NA and BNC connector ANT1.
Install inductors L5N, L6N, L7N, L8N,
Install NPO capacitors C6N, C7N, C8N, C9N, C10N, C11N, C12N, C13N, C19N, C20N, C21N, C22N, C25N.
resistors R4N, R5N, R6N, R7N.
Install inductor L11N.
Install NPO capacitors C1N, C2N, C3N, C15N, C17N.
Install electrolytic capacitors C18N and C26N.
Install 4 pin header SV3PB.
Install preamplifier IC1N and SMT capacitors C14N and C16N.
Soldered SMT components
Install relays RL1N to RL11N.
K3: cut 160mm of four wire flat ribbon cable.
Install crimp connectors and wire as per photo.
This completes assembly of phase 6.
1. Connect 12V DC power supply to plug
2. Check the voltage on IN [+2.78 V] and OUT [+4.43 V] pins of IC1N.
1. Connect USB cable.
2. Start GSDR software.
3. When activating RF preamplifier and ATT, you should hear the relays clicking.
4. The RF amplifier will produce signals gain of +20
dB to +23 dB and the antennuator will reduce it by -20dB.
Next phase: Band pass filters
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 11: Si570 Quasi oven circuit
| Phase 12: G59 Receiver Image Calibrator
| GBOX assembly