aion SKYWAVE Manual
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aion SKYWAVE Manual

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PROJECT NAME
SKYWAVE
BASED ON
Hudson Electronics Broadcast
EFFECT TYPE
Germanium fuzz/overdrive
PROJECT SUMMARY
A hybrid silicon/germanium boost & drive pedal with a transformer-coupled output, with tones spanning
the decades from vintage to modern.
Actual size is 2.3" x 2.43" (main board) and 1.78" x 0.90" (bypass board).
SKYWAVE GERMANIUM DRIVE
BUILD DIFFICULTY
Intermediate
DOCUMENT VERSION
1.0.0 (2023-07-04)
1

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Summary of Contents for aion SKYWAVE

  • Page 1 1.0.0 (2023-07-04) PROJECT SUMMARY A hybrid silicon/germanium boost & drive pedal with a transformer-coupled output, with tones spanning the decades from vintage to modern. Actual size is 2.3” x 2.43” (main board) and 1.78” x 0.90” (bypass board). SKYWAVE GERMANIUM DRIVE...

  • Page 2: Table Of Contents

    The Skywave is primarily based on the original Broadcast, but it adds a voltage-tripler circuit to allow selectable 18V or 24V power from a standard 9V supply. It also incorporates a 3-way gain switch, adding an extra position adapted from the 24V version of the Broadcast.

  • Page 3: Parts List

    MLCC capacitor, X7R Power supply filter capacitor. 10uF Electrolytic capacitor, 5mm Power supply filter capacitor. 10uF Electrolytic capacitor, 5mm Power supply filter capacitor. 10uF Electrolytic capacitor, 5mm Power supply filter capacitor. 10uF Electrolytic capacitor, 5mm Power supply filter capacitor. SKYWAVE GERMANIUM DRIVE...
  • Page 4 Switchcraft 111X or equivalent. 1/4" mono 1/4" phone jack, closed frame Switchcraft 111X or equivalent. 2.1mm DC jack, 2.1mm panel mount Mouser 163-4302-E or equivalent. 3PDT Stomp switch, 3PDT 125B Enclosure, die-cast aluminum Can also use a Hammond 1590N1. SKYWAVE GERMANIUM DRIVE...

  • Page 5: Build Notes

    BUILD NOTES Silicon transistor selection The Broadcast uses a BC549C for Q1, the NPN transistor. The Skywave layout uses the USA E-B-C convention, so the 2N5088 is specified as an equivalent, but if you want to use the BC549C then just rotate it 180 degrees from the silkscreen.

  • Page 6: Schematic

    SCHEMATIC SW1A 1N5817 220uF 100n 470n EG2308 220uF 10uF 470n 1N4001 1N4001 1N4001 1N4001 LT1054CP 10uF 10uF 10uF 10uF 330uF 330n 10kA LO CUT 2N404A 2N5088 330pF TY-141P 100uF 100uF 100uF GAIN 250kA SKYWAVE GERMANIUM DRIVE...

  • Page 7: Drill Template

    LEVEL GAIN x: -0.65, y: +1.71 x: 0.65, y: +1.71 ø9/32” ø9/32” GAIN MODE x: 0, y: +0.66 x: +0.85, y: +0.66 ø9/32” ø1/4” CENTER (0,0) FOOTSWITCH x: -0.775, y: -1.775 x: 0, y: -1.775 ø5/16” ø15/32” SKYWAVE GERMANIUM DRIVE...

  • Page 8: Enclosure Layout

    ENCLOSURE LAYOUT Enclosure is shown without jacks. See next page for jack layout and wiring. 125B SKYWAVE GERMANIUM DRIVE...

  • Page 9: Wiring Diagram

    WIRING DIAGRAM NC OUT GND +V +V JACK GND JACK GND GND PCB 125B SKYWAVE GERMANIUM DRIVE...

  • Page 10: Document Revisions

    (In other words: you don’t have to go out of your way to advertise the fact that you use these PCBs, but please don’t go out of your way to hide it. The guitar effects industry needs more transparency, not less!) DOCUMENT REVISIONS 1.0.0 (2023-07-04) Initial release. SKYWAVE GERMANIUM DRIVE...

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