A close-up photo of a vintage ham radio transceiver glowing softly with green and amber lights against a dark background.
A close-up photo of a vintage ham radio transceiver glowing softly with green and amber lights against a dark background.

Gallery

Snapshots of my QSL cards and radio adventures

A neatly arranged collection of colorful QSL cards pinned on a corkboard, each telling a story of a distant contact.
A neatly arranged collection of colorful QSL cards pinned on a corkboard, each telling a story of a distant contact.
An outdoor shot of an antenna setup silhouetted against a twilight sky in Bangladesh, with faint radio waves illustrated around it.
An outdoor shot of an antenna setup silhouetted against a twilight sky in Bangladesh, with faint radio waves illustrated around it.

Meet s21red

I'm an amateur radio operator based in Bangladesh, sharing my passion for radio waves and science projects.

A warm portrait of s21red at his radio station, surrounded by glowing green and amber equipment in a dark tech-themed room.
A warm portrait of s21red at his radio station, surrounded by glowing green and amber equipment in a dark tech-themed room.

150+

15

Trusted Worldwide

QSO Logs

My Services

Engaging ham radio projects and real-time tracking tools at your fingertips.

A close-up of a vintage ham radio transceiver glowing softly with green and amber lights in a dark room.
A close-up of a vintage ham radio transceiver glowing softly with green and amber lights in a dark room.
Live Tracking

Satellite passes and propagation updates shown live.

QSO Log

Record and review recent contacts easily.

Science Projects

Fun antenna builds and balloon tracking adventures.