Originally Posted by
43Inches
https://www.atsb.gov.au/publications.../aair200004070. And random extra voices on the radio can get in the way of critical communication, which is why I'm not a fan at all of having extra radios on the ground putting in their two cents. Remembering that and hand helds have very limited range and you could be over-transmitting others approaching the aerodrome without knowing.
I completely agree, especially in reference to the topic at Camden, which is (during the day when solos would be attempted) a controlled aerodrome. Leave the tower to do its job, and if the need for an instructor arises the tower will make contact and set it up. Random people suddenly coming onto the airwaves is an absolute recipe for disaster!