uSDXn 40m Analog Transceiver + 10W HF Power Amplifier

This project integrates the analog section of the uSDXn 40-meter transceiver with a 10W HF power amplifier based on the QRP Labs design by Hans Summers.

The PCB combines the RF driver and power amplifier, RF input attenuator, output low-pass filter, bias and TX control circuitry, and antenna switching into a single board.

Project status: Development version — not final. The PCB, component values, and RF performance are subject to change during testing.

The goal is to develop a practical, educational QRP transceiver platform for experimentation, modification, and further development by the amateur radio community.

Design acknowledgment: The 10W power amplifier section is based on the QRP Labs design by Hans Summers. The original design and applicable license terms must be respected. Modifications and integration into the uSDXn project will be documented as development progresses.

Updates, Corrections & Community Support

For the latest project updates, design revisions, bug fixes, corrections, and technical discussions, please follow the uSDX QRP Facebook Group.

https://www.facebook.com/groups/uSDXQrp

This project is under development. Please check the group regularly for updates before building or modifying the hardware. Community feedback and testing reports are welcome.

Gerber Files Access & Private Community

When the Gerber files become available, access will be announced and provided through our private Facebook group:

QSO QRP Projects: https://www.facebook.com/groups/qsoqrpprojects

To request access to the Gerber files, you must first become a member of this private group.

Membership is subject to approval. To protect the community and ensure responsible sharing of project files, applicants must have a genuine, identifiable profile that allows the group administrators to understand who is requesting access.

Profiles with hidden, incomplete, or unverifiable information may be declined. If we cannot reasonably verify who is requesting membership, the request will be rejected.

Thank you for understanding and helping us maintain a trustworthy community for sharing and developing QRP amateur radio projects.

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