It's not so much a legal issue as the fact that stations need to renew their licences every so often - and the licensing authorities can withdraw a licence if they think that the station is in breach of conditions. If they get a lot of complaints, they can put more pressure on the station than we can individually; at least that's how things work here in the UK.

I'd suggest contacting the station first - they may not even know they are in the wrong.

The RDS standard is unfortunately for-money[1], but the guidelines for RDBS interoperability[2] does quote from section 3.2.2:

The Programme Service name comprises eight characters, intended for static display on a receiver. It is the primary aid to listeners in programme service identification and selection. The use of PS to transmit text other than a single eight character name is not permitted (see also 3.1.5.1). Transmission of a PS name usually takes four type 0A groups, but to allow an instant display of the PS when a receiver pre-set is selected, the PS name is often stored for subsequent recall from memory when a programme service is selected. For this reason PS should generally be invariant. If a broadcaster wishes to transmit longer Programme Service names, programme-related information or any other text, then Radiotext provides this feature. A similar effect could be experienced with a dynamic text transmission of PTYN. As a result, dynamic PS and PTYN transmissions are expressly forbidden.

[1] <URL:http://www.rds.org.uk/rds98/rds_std_download.htm>

[2] <URL:ftp://ftp.rds.org.uk/pub/acrobat/rbds_vs_rds.pdf>

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Toby Speight - 040103385