BitX-20 SSB Transceiver

From TechNet

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

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.

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.

Audio section

BFO

Post IF Amp

1st IF Amp

First Mixer

RF Amplifier

Band Pass Filter

RF Driver

VFO

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FLL and Display

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

Power Supply

Case, Connectors and Knobs

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References

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

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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