Enclosure not stated · 4 knobs
Hudson Broadcast - dual footswitch versionVerified
Based on the Hudson Electronics Dual Broadcast· 4 other boards clone it
From the post
Per request. Schematic is avaiable HERE.
Schematic
This is a board layout, a drawing of where each part goes, and the post may link the schematic it was drawn from. Open the layout at Dirtbox Layouts. No KiCad fragment has been drawn for this circuit yet.
Parts list 30 rows
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Check before you build · 1 value the reader of this layout was not sure of
- 220K at rows O-Q, column 9 (left of the 33K): first digit is partly hidden under the 10uF can, read as 220K
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 11 | ||||
| ×2 | ? | ? | LED resistor, value not given; read from the layout by eye | |
| ×2 | 33K | 33k | read from the layout by eye | |
| ×1 | 10Ω | 10 | read from the layout by eye | |
| ×1 | 1K | 1k | read from the layout by eye | |
| ×1 | 68Ω | 68 | read from the layout by eye | |
| ×4 | 5.6K | 5.6k | read from the layout by eye | |
| ×1 | 56K | 56k | read from the layout by eye | |
| ×1 | 1M | 1M | read from the layout by eye | |
| ×1 | 220K | 220k | read from the layout by eye | |
| ×1 | 4.7K | 4.7k | read from the layout by eye | |
| ×1 | 15K | 15k | read from the layout by eye | |
| Capacitors 7 | ||||
| ×2 | 330nF | 330n | read from the layout by eye | |
| ×1 | 1nF | 1n | read from the layout by eye | |
| ×1 | 330pF | 330p | read from the layout by eye | |
| ×5 | 10uF | 10u | electrolytic; read from the layout by eye | |
| ×1 | 47uF | 47u | electrolytic; read from the layout by eye | |
| ×5 | 100uF | 100u | electrolytic; read from the layout by eye | |
| ×1 | 330uF | 330u | electrolytic; read from the layout by eye | |
| Diodes 1 | ||||
| ×5 | 1N5817 | 1N5817 | D1-D5; read from the layout by eye | |
| Transistors 2 | ||||
| Q1 | BC549C | BC549C | read from the layout by eye | |
| Q2 | OC71 | OC71 | germanium; read from the layout by eye | |
| ICs 1 | ||||
| IC1 | LT1054 | LT1054 | read from the layout by eye | |
| Transformers 1 | ||||
| TR | TY-141P | TY-141P | read from the layout by eye | |
| Potentiometers 4 | ||||
| Gain | A250K | A250k | Potentiometer | read from the layout by eye |
| Low Cut | A10K | A10k | Potentiometer | read from the layout by eye |
| Level1 | B25K | B25k | Potentiometer | read from the layout by eye |
| Level2 | B25K | B25k | Potentiometer | read from the layout by eye |
| Trimmers 1 | ||||
| ×2 | 1K | 1k | Low, High; read from the layout by eye | |
| Switches 2 | ||||
| Voltage Sw | SPDT on/on | SPDT ON/ON | toggle; read from the layout by eye | |
| High/Low Gain Sw | 3PDT | 3PDT | footswitch; read from the layout by eye | |
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