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Section IV
SOFTWARE SETUP FOR
ON-AIR OPERATION
PI AND PTY CODES
PI Code and
the Built-In
Calculator
As discussed on Page 10, the PI code identifies your station
with a unique digital address. In many parts of the world this
code is assigned by the national broadcasting authority or a re-
gional standards group.
NOTE:
A valid PI code is essential to proper RDS
system
opera-
tion. RDS radios may actually tune away from a station trans-
mitting RDS data groups that do not include a valid PI code.
When the 730 Encoder is operated in the European RDS mode,
the 4-character, hexadecimal PI code must be typed directly in-
to the
PI
box. The box marked
Call
does not appear in the RDS
mode.
In the US and Canada the PI code is derived from station call
letters using complex mathematical routines that apply certain
weighting to each letter in the station’s call. The US and Cana-
dian formulae are different, of course, and there is considerable
room for error when manually calculating the hex value from
call letters. We have not included these formulae here, but in-
terested parties can refer to the appropriate Standard for a full
and somewhat confusing explanation of how the PI is actually
calculated. (Have your scientific calculator ready!)
730 Encoder software contains a nifty built-in calculator that
makes PI code entry entirely automatic in North America.
When the encoder is in the RBDS mode, US or
Canadian call letters may be typed directly in
the
Call
box. As soon as valid call letters are
entered, the corresponding hex code will magically appear in
the
PI
box. US and Canadian calls always begin with K, W or C.
NOTE:
The 730 software calculator will not respond to call let-
ters assigned in countries other than the US and Canada.
PTY and PTYN
Format
Identifiers
The PTY (Program Type) code identifies the station’s program-
ming format from lists that have been compiled as part of the
RadioData standards. There are two lists, one for the European
RDS system and one for the North American RBDS specifica-
tion. The two lists are shown side-by-side in the Appendix on
Page 80.
The appropriate PTY list is automatically loaded when the 730
is set for the proper regional mode (RDS or RBDS). With the
proper encoder mode set, choose the station format from the
drop-down list.