Originally Posted by
mike734
Yeah, I'm not going to read that to find the answer. IMHO one does not have to read back the freq unless they want silent conformation that they get the freq right. If they read it back wrong the controller has a chance to correct the pilot. Other than that who cares? If I'm transfered to tower, and it's busy, I'll just "roger tower g'day." I might not even use my call sign. 20,000 hours of this and I've never heard a complaint. I guess it's Okay.
I'm sitting in a hotel with nothing better to do at the moment. The link is to the ICAO Manual of Radiotelephony...yikes..and while it does not specifically list radio frequencies as one of the things that MUST be read back, it does state that "...other clearances or instructions shall be read back or acknowledged in a manner to clearly indicate that they have been understood and will be complied with." I interpret that to mean including the frequency but I've been wrong a couple of times in my life.
I've switched to tower with a quick call sign acknowledgement myself but the tower freq is easy to find. Trying to find a sector frequency on an enroute chart or worse an EFB can be challenging