<Aplogies if this appears twice - my problems are not limited to just my MD player!>

Hi all,

My Sony 7900 in-car MD player seems to be having some sort of  'problem' related to 
its RDS Traffic Announcement feature. I am hesitant to use the word 'problem' as it 
could well be an inherent consequence of how this RDS feature works but hopefully 
someone out there might be able to explain what's going on....

Whilst listening to the radio with the TA feature enabled I occasionally suddenly get 
a momentary muting of the sound and the words 'EON-TA' appears very briefly on the 
LCD. The music then reappears and everything is okay... 

The Traffic Announcement feature does work in that when another station is 
broadcasting a traffic update it successfully switches over to that station until the 
programme has finished. During this correct operation of the TA feature the display 
does not display 'EON-TA' as in my 'problem' but correctly displays the radio station 
name.

Am I correct in assuming that whilst I have TA enabled the radio is continuously 
scanning the other radio frequencies looking for the RDS TA databit (assuming the RDS 
information is digitally encoded) and when it comes across one that is then it 
switches the main tuner over to the traffic-broadcasting frequency? I say *main* tuner 
because I imagine that for it do this it must have two tuners to simultaneously tune 
in to two different frequencies? I figured that it must just scan the *entire* 
frequency range as it sometimes tunes in to traffic bulletins from radio stations that 
I don't have set in my presets.

Has anyone come across this 'EON-TA' message and consequential muting of the sound? I 
thought that possibly the machine is picking up a TA databit that it shouldn't be - 
possibly from a radio station unintentionally, and momentarily, transmitting a TA bit? 
Incidentally I have only the noticed the problem recently so it could well be due a 
problem locally although I must admit I never used to really have the TA facility 
enabled elsewhere.

Can anyone shed any light on my problem? Or even point me in the direction of some RDS 
information with a somewhat more technical approach to it than the many available 
'descriptions' of the RDS service?

All thoughts and ideas welcome,

Mathew

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