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STD RX998 2.1

License: Public Domain

Mode: Editors' pick

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Update time: 2023-05-29 11:15:45
Creation time: 2019-03-24 08:59:51
Description
Simple SSB receiver [homepage](http://dspview.com/viewtopic.php?f=8&t=230)
Design Drawing
schematic diagram
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PCB
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ID Name Designator Footprint Quantity
1 TDA2822 U1 SOP-8_150MIL 1
2 BF998 VT6,VT7,VT8,VT9,VT1,VT2 SOT143B 6
3 AUTOTRANSFORMER 1+1 T2,T4 AUTOTRANSFORMER TOROID T37 SMALL HOLES 2
4 0.01 C27,C29,C46,C47,C55,C48 0805 6
5 RF In P6 HDR-2X1/2.54 1
6 0.1 C28,C33,C34,C35,C49,C61,C62,C2,C7 1206 9
7 1k5 R15 1206 1
8 VFO P7 HDR-2X1/2.54 1
9 2k2 R16,R39,R27 1206 3
10 27k R19 1206 1
11 470 R20 1206 1
12 300 R21 1206 1
13 10k R22 1206 1
14 33 C36,C38,C39,C40,C41,C42,C43,C44 0805 8
15 XTAL XTAL12,XTAL13,XTAL14,XTAL15,XTAL16,XTAL17,XTAL18,XTAL19,XTAL20,XTAL21,XTAL22 HC-49U-PTH-W 11
16 100 R24,R25,R26 1206 3
17 RF Gain P8 HDR-2X1/2.54 1
18 100uH L1 AXIAL-0.4 1
19 BFO2 P10 HDR-2X1/2.54 1
20 LL4148 D7,D8,D9,D10 LL-34 4
21 1u C50 0805 1
22 150k R29 1206 1
23 4M7 R30 1206 1
24 2N3906 Q2 SOT-23(SOT-23-3) 1
25 10u C54,C3,C5,C6 0805 4
26 AF Out P11 HDR-2X1/2.54 1
27 100u C56 CAP-D8.0XF3.5 1
28 AF Gain P12 HDR-3X1/2.54 1
29 1u C53 1206 1
30 220 R38,R2,R3 1206 3
31 10 R40,R5 1206 2
32 470u C1,C57 CAP-D8.0XF3.5 2
33 BSS138 Q9 SOT-23-3 1
34 68 R4 1206 1
35 33 R1 1206 1
36 12v P1 HDR-2X1/2.54 1

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