Why is the Angelus broadcast on only one of RTÉ's television channels?

A viewer from Laois writes to 'Mailbag' asking why the daily 6.00 pm broadcast of 'The Angelus' the Catholic devotion commemorating the Incarnation is only on one of RTÉ's two television channels?

Presenter Arthur Murphy recalls letters from some time back wondering if RTÉ should be transmitting The Angelus at all and asks of the letter writer,

How on earth do you intend to see it on both channels? Unless of course you bought two tellies and listened to it in stereo.

This edition of 'Mailbag' was broadcast 1 October 1987. The presenter is Arthur Murphy.