Las Vegas (NV) High School electronics classroom was licensed with a Hallicrafters CB in 1959-60, with the call 11Q0082. You're the only other #Q licensee I've run into.
The electronics instructor was K7LBQ (been SK for a while). Many of the students were hams, or working our way to that goal. After the crank-up tower had been properly installed and had the 3-element 11M yagi sitting on top. it was time to adjust the antenna. I was designated as the operator, and Mr. Delzer (LBQ) was up on the pretty flat roof. I was to transmit "This is Eleven Cue Zero Zero Eight Two testing" and note the SWR meter reading. It was relayed up to LBQ by voice chain. He'd readjust a little bit, then back away to the farthest corner of the roof and stomp his foot. This was my cue to transmit again.
After the third or fourth round of this, a station popped up and said, "11Q0082, this is Zed Ess 1 Romeo Kilo. I know you cawn't (British accent) answer me, old man, since this is now the Citizen's Band in the US, but thought you might like to know you're putting in a decent five by seven here in Cape Town. ZS1RK clear." The voice chain passed the word to LBQ, who came running in after hearing the news. His first concern was "You didn't answer him, did you!?"
Took me MONTHS to work Africa for myself. Finally got a ZS3 in 1962, just before I graduated from LVHS.