BitX-20 SSB Transceiver

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Contents 1 Introduction 2 Suggested Tools needed 3 Audio section 4 BFO 5 Post IF Amp 6 1st IF Amp 7 First Mixer 8 RF Amplifier 9 Band Pass Filter 10 RF Driver 11 VFO 12 FLL and Display 13 Power Supply 14 Case, Connectors and Knobs 15 References 16 External Links

[edit] Introduction

The BitX20 is a 14MHz QRP (low power) SSB Transceiver that was designed in 1994 by Ashhar Farhan^[1].

The new BitX-20 digital connections website is being developed.

Check out 147.120 projects YahooGroup to follow the building of this project. We got our BitX-20 project of kits from Sunil Lakhani ^[2], India.

[edit] Suggested Tools needed

• Soldering pencil and holder
• Solder (63/37) in a dispenser
• Solder Flux
• Needle nose pliers
• Diagonal cutters
• Wire Strippers
• Solder puller / desolder braid
• Tool bag (to carry all this stuff)
• VOM/DVM meter (optional)

Farhan's input on the Homebrew's Lab.

Limor "Lady Ada" input on the topic of basic tools.

[edit] Audio section

[edit] BFO

[edit] Post IF Amp

[edit] 1st IF Amp

[edit] First Mixer

[edit] RF Amplifier

[edit] Band Pass Filter

[edit] RF Driver

[edit] VFO

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[edit] FLL and Display

Tracy's blog ^[3] post.
David's pics of BitX-20 project.

[edit] Power Supply

[edit] Case, Connectors and Knobs

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[edit] References

1. ↑ Ashhar Farhan VU2ESE
2. ↑ Sunil Lakhani, VU3SUA
3. ↑ FFL pcb

[edit] External Links

• Farhan's Homebrew QRP (VU2FAX)
• The BITX20 Yahoo!Group
• BitX SSB QRP for Ham Radio by Sunil Lakhani (p.c. boards/kits)
• Building the BITX20A
• Constructing the BITX20A
• BitXon FaceBook
• BitX-20 from Far Circuits
• KC0WOX Leonad Leeper's Homebrew Video Heaven
• BitX ver 3 assembly manual -- suggested for this project

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