What's the cheapest radio that gives a 'Roger Beep'? I currently own a bunch of Retevis H-777s (identical to Baofeng BF-888S) and have recently bought a bunch of Retevis RT21's (same radio in reality, different casing). When I loan these out, users complain that the initial word or so of sentence is cut off. I understand that Motorola radios have a feature that sends a tone for a second or so when PTT is pressed, both to alert the receiving user of an incoming transmission, and to prevent the transmitting user from speaking for the first second or so. 


I don't really want to pay upwards of £300 a radio just for a beep, is there any retevis / baofeng / other inexpensive radio that has this feature?

Thanks in advance!