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EGV-9B_BPFLPF
v1
BPF/LPF module for EGV-9B
Last update March 01, 2023
ea3gcy@gmail.com
www.ea3gcy.com
:
Latest updates and news in
EGV-9B_BPFLPF
v1
Thank you for building the
module
Have fun assembling it and enjoy QRP! 73 Javier Solans, ea3gcy
EGV-9B_BPFLPF
module for EGV-9B CW Transceiver kit
Page 1
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Summary of Contents for EA3GCY EGV-9B BPFLPF
- Page 1 BPF/LPF module for EGV-9B Last update March 01, 2023 ea3gcy@gmail.com www.ea3gcy.com Latest updates and news in EGV-9B_BPFLPF Thank you for building the module Have fun assembling it and enjoy QRP! 73 Javier Solans, ea3gcy EGV-9B_BPFLPF module for EGV-9B CW Transceiver kit Page 1...
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Page 2: Specifications
INTRODUCTION EGV-9B_BPFLPF The EGV-9B_BPFLPF is the 3 to 30MHz filter plug-in module for the EGV-9B 9-band CW transceiver. This module incorporates 5 7-pole low-pass filters and two variable band-pass filters and one band-pass filter. All the filters are switched by means of relays to avoid their interactions. Note: good experience on radio assembly is required. -
Page 3: Component List
COMPONENT LIST Resistors Checked Ref. Value Ident./Comment Located 220 Ω Top layer 220K Top layer 220K Top layer 220K Top layer 220K Top layer 220K Top layer 220K Top layer Potentiometer 50K 50K shaft potentiometer 50K 503 Top layer Capacitors Checked Ref. - Page 4 Semiconductors Checked Ref. Type Ident./Comment Located Printed “D” 8 x diodes printed D are 1N4148 (vertically mounted) Top layer Printed “DV” All diodes printed DV are BB201 SMD (bottom layer PCB) Bottom layer 10V zener 0.5W Top layer Inductors/RF Transformers/Relay Checked Ref.
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Page 5: Recommended Assembly Sequence
To finish, solder the pins strips. This is important work. See the section “wiring and connections” All capacitors are SMD format and are soldered in bottom PCB by www.ea3gcy.com lab. EGV-9B_BPFLPF module for EGV-9B CW Transceiver kit Page 5... - Page 6 TOROIDS WINDING he following table shows the type of toroid, the turns it has to wind and the length of wire it will need. All toroids are 9.5mm/0.375in outside diameter. The T37-2 toroid is the red one and the T37-6 is the yellow one.
- Page 7 TOROIDS ASSEMBLY EXAMPLE: he following example is the low pass filter for 40m 40m LPF Toroids L10, L11 and L12 L10 and L12 are identical and are wound with 18 turns. L11 is wound with 20 turns. They use T37-2 (red toroids 9.5mm/0.375in outer diameter).
- Page 8 L10 (18 turns) L11 (20 turns) L12 (18 turns) PLUG IN MODULE - WIRING AND CONNECTIONS he EGV-9B_BPFLPF PCB is a plug-in module that sits on top of the EGV-9B's main board. The connection is simple, but requires special attention so that errors do not arise. 1.- The three-pin “V-TUNE”...
- Page 9 See the following pictures: The spacers to screw the board are 10mm and you have to add a nut to gain about 2mm in height. To fasten to the main board, 10mm (M3x10) screws are used and to fasten the plug-in filter module, 4 or 5mm (M3x4) screws are used.
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Page 10: Limited Warranty
I can also supply any part that you have lost, Javier Solans, EA3GCY, warrants this device to damaged or broken accidently. function according to the specifications, provided If you find any errors in this manual or would like... - Page 11 SCHEMATICS EGV-9B_BPFLPF module for EGV-9B CW Transceiver kit Page 11...
- Page 12 EGV-9B_BPFLPF module for EGV-9B CW Transceiver kit Page 12...