From Myer's book on the Tippit shooting: "The exact time that Brewer heard the radio broadcast on the shooting of Office Tippit is not known, although it was very likely broadcast at about 1:31 p.m. over KBOX radio.
The only reason Myers considers this "likely" is because KBOX is the only major station with no existing recordings of what was broadcast that day.
Again, you wrote that he stated in his affidavit/testimony about listening to KLIF. Where did he say this? I can't find it.
This is all I could find:
https://www.maryferrell.org/showDoc.html?docId=16235#relPageId=9&tab=pageGriggs: I know this is a crazy question but is there any way of recalling which programme, which station, you were listening to?
Brewer: A Dallas station. I have a feeling it may have been KLIF. That would be one of the stations that I would ordinarily be listening to, but I honestly don't know. It was just the normal run of the motorcade and all of a sudden you hear all the commotion and then you hear something about shots being fired and then - you know.
Griggs: So it was actually being broadcast live. I see. What about Tippit's murder?
Brewer: I also - now that was just a few blocks away. But I heard there was a shooting in the Oak Cliff area - now they didn't say anything about who it was. I don't recall that it was said that there was a policeman down, or what, but I do recall hearing something about a shooting in the Oak Cliff area. And just very shortly after that, the sirens of the cars all converging on Zangs and Jefferson or just going towards it.