Sooner or later many hams change callsigns — you upgrade your licence and the administration issues a new prefix, you take a vanity call, or you operate abroad under a reciprocal call. It is a completely normal part of the hobby. This guide explains what actually happens to your logbook, your QSL confirmations, and your online presence — and how the Unixeer apps are built so a callsign change never costs you anything.
Your old contacts do not disappear and do not change. Every QSO stays logged under the callsign you actually used at the time. You simply start operating under the new call going forward — and both live happily side by side, forever.
A QSO is a historical record of a real event: on that date, under that callsign, you worked that station. Changing your callsign does not rewrite history. The call you used is stored on each contact, so:
STATION_CALLSIGN / OPERATOR, so an upload years later is still correct.This matters for awards and matching: DXCC, WAS, VUCC and grid credits are tied to the call that made the contact. Keeping the per-contact call intact is what lets you combine everything later under one account.
In Ham Logging and Ham Satting:
The one place a callsign change takes a little admin is the QSL / award services, because each of them ties confirmations to a specific callsign. None of this is lost — you just add your new call alongside the old one:
Request a new certificate for the new call (free, via TQSL). Your old QSOs stay confirmed under the old certificate; one LoTW account holds both, each certificate valid for the dates of its licence. Nothing is lost — you just sign new-call uploads with the new certificate.
Create a new logbook for the new call (a QRZ account can hold several). Your old logbook and its confirmations remain.
Add the new call as a new nickname / QTH under your account. Old eQSL cards stay under the old nickname.
Register the new call under your existing account. Old and new calls can both be uploaded and managed together.
Award credit follows the operator, not just the call. Most award programmes let you combine multiple callsigns with a little paperwork, so contacts made under different calls all count toward the same award total.
Two different conventions are easy to confuse — they live in different places:
CALL/P (portable), CALL/M (mobile), CALL/MM (maritime mobile), or a reciprocal prefix like 9A/CALL when operating abroad. These belong on your logged QSOs, and the apps treat them as the same operator — they are still you.-7 / -9 (handheld / mobile), -11 (balloon / aircraft), -13 (weather). These are an APRS-only identifier and are kept separate from your QSO callsign in Ham Satting, so an SSID never ends up in your logbook.Change your call, set it in the app, and carry on. Your history is safe, your QSL cards stay correct, and your old contacts remain yours — under every call you've ever held.