Fareastdriver,
Classic, and how sharp. I once needed a quick ground run at Boston Logan, to clear an engine snag on a C130. I reached for the en route supplement and identified a frequency for "non operational", ground activity related communication. On requesting start for a five minute, low power run, I was told that I was abusing the frequency and should contact ATC by telephone, "remain clear of frequency"! How rude I thought, so after doing the 5 minute run, I rang ATC on the number he had given, to thank them for their assistance.
Smudge