Hay Wullie
You haven't lived until you have flown a Single channel with just a pulse button and rubber powered excapement ware depending how you set it up 1pluse was right, 2 was down, 3 was left, and 4 was up, so you had to have a lot of free flight savvy and trim experience. The ace commander was a real boon and the first bat, powered excapements GG is right about the nose dropping etc.
Then to make things difficult if you happened to fly close to a hi traffic R/R line there com's radios were also on 27 mH and you did not have a clue when they would hit you.
Just to add a bit of triva
Hi to all.
Cheers Bob T