Signals and Transmission: Analogue, Digital and What Limits a Link Certificate
Valid for 12 monthsFree
Awarded for completing Signals and Transmission and passing its exam, demonstrating the ability to reason about bandwidth, bit rate, baud rate, and the Nyquist and Shannon limits with real worked arithmetic.
How verification works
Certificates are designed to be checked, not just displayed.
Every certificate has a public page at academy.safeguard.sh/cert/<id> — no account needed to view it
The page shows live status: valid, expired, or revoked — never a stale PDF
A QR code on the printed certificate points at the same page
One-click add to your LinkedIn profile; shared links unfurl as rich cards
The credential is valid for 12 months from issue. Its public page states the expiry date, and renewing means passing the current exam again — so the credential always reflects the current material.
Signals and Transmission: Analogue, Digital and What Limits a Link Certificate | Safeguard Academy
