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STD GeFest frontend
GeFest frontend
License
GPL 3.0
License: GPL 3.0Mode:
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Update time：
2024-10-12 08:44:27
Creation time：
2024-09-16 17:08:38
Description
Description
Frontend board for GeFest TRX project.
The purpose of this project is to build a transceiver exclusively on germanium transistors. Double frequency conversion is used. The first IF is 23 MHz or 10.7 MHz. The second IF is 200/465/500 kHz. The transceiver has a modular structure with frontend boards, an AM processor, a SSB-processor, a FM-processor and an audio amplifier.
Discussion and more information at the link https://qrzua.club/viewtopic.php?t=157
Design Drawing
Design Drawing
schematic diagram
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PCB
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| ID | Name | Designator | Footprint | Quantity | |
|---|---|---|---|---|---|
| 1 | 0.01 | C1,C2,C3,C5,C7,C8,C10,C11,C12,C13,C14,C15,C18 | C-RAD-0.2 | 13 | |
| 2 | КПК-МН | C4,C6 | КПК-МН | 2 | |
| 3 | 0.1 | C9,C16,C23 | C-RAD-0.2 | 3 | |
| 4 | 0.1u | C17 | C-RAD-0.2 | 1 | |
| 5 | 22u | C19,C20 | CAP-D5.0XF2.0 | 2 | |
| 6 | 270 | C21,C22 | C-RAD-0.2 | 2 | |
| 7 | КД503 | D1,D2,D3,D4,D5,D6,D7,D8,D9,D10,D11,D12,D13,D14,D15,D16 | DO-35_BD2.0-L4.2-P8.20-D0.5-RD | 16 | C13769 |
| 8 | VFO | J1 | HDR-M-2.54_1X2 | 1 | C124375 |
| 9 | BPF | J2 | HDR-M-2.54_1X2 | 1 | C124375 |
| 10 | VRX | J3 | HDR-M-2.54_1X2 | 1 | C124375 |
| 11 | VTX | J4 | HDR-M-2.54_1X2 | 1 | C124375 |
| 12 | BFO | J5 | HDR-M-2.54_1X2 | 1 | C124375 |
| 13 | IF | J6 | HDR-M-2.54_1X2 | 1 | C124375 |
| 14 | 680uH | L1,L2 | AXIAL-0.4 | 2 | |
| 15 | 33uH | L3,L4,L5,L6,L7 | AXIAL-0.4 | 5 | |
| 16 | 22uH | L8,L9 | AXIAL-0.4 | 2 | |
| 17 | ГТ313 | Q1,Q2,Q3,Q4 | TO39ECB-4 | 4 | |
| 18 | 100 | R1,R2,R3,R4,R19,R20 | AXIAL-0.4 | 6 | |
| 19 | 2k2 | R5,R15,R18 | AXIAL-0.4 | 3 | |
| 20 | 18 | R6 | AXIAL-0.4 | 1 | |
| 21 | 3k9 | R7 | AXIAL-0.4 | 1 | |
| 22 | 1k8 | R8,R16 | AXIAL-0.4 | 2 | |
| 23 | 68 | R9,R14 | AXIAL-0.4 | 2 | |
| 24 | 4k7 | R10,R21,R22 | AXIAL-0.4 | 3 | |
| 25 | 330 | R11,R12 | AXIAL-0.4 | 2 | |
| 26 | 6k8 | R13 | AXIAL-0.4 | 1 | |
| 27 | 5.6 | R17 | AXIAL-0.4 | 1 | |
| 28 | 200 | R23 | AXIAL-0.4 | 1 | |
| 29 | Transformer_T37 | T1 | T37_TRANSFORMER | 1 | |
| 30 | TRANSFORMER 1+1+1 | T2,T3,T4 | TRANSFORMER TRIPLE | 3 | |
| 31 | ПФ2П-286 | U1 | ПФ2П-286 | 1 | |
| 32 | ФП2П4-436 | U2 | ФП2П4-436 | 1 | |
| 33 | Д814Б | VD1,VD2 | Д814 | 2 |
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