Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Program Identification (PI)

The Program Identification (PI) is received if the station broadcasts this feature. The PI code consists of 4 nibbles of data broadcast on the radio data system subcarrier. For regional variants, the second nibble of data is different.