WingFlaps,

Well it's completely redundent, a waste of time and could be confused
with "say again". All you need to do is just repeat the message!

Your opinion is all fine and well. However, the gold standard on this is ICAO. As
Andy says, "I say again" is ICAO standard phraseology per Annex 10 Volume II
(http://www.caa.govt.nz/ICAO/Annex_10..._Cmp_Stmt.pdf).

For the US, check the Pilot Controller Glossary as the definitive and official
source for phraseology. Under "I", you'll find:

I SAY AGAIN- The message will be repeated.

This is how it should be:

Mayday relay, mayday relay, mayday relay, (station 3x), Received
mayday (distress station) (distress message reproduced), mayday

And the source for that is?

--
Thomas Borchert (EDDH)