Here is the scoop on SPC. I thought this was a fairly common contest
acronym, but have gotten many requests for more information, so that is my
fault for not explaining it better.
The S stands for US state, and that means each US state is a multiplier.
The P stands for Canadian province, and the C stands for DXCC country. That
means that every state is a multiplier, every Canadian province is
multiplier, and every DXCC country is a multiplier. That gives you a
potential for almost 400 multipliers!
For the PSKFest, count each multiplier only once (not per band like the
Rumble), but you get credit for every QSO you work as long as it isn't a dupe
on the same band.
For the exchange, US stations will send the two letter state abbreviation,
the Canadians will send their province abbreviation, and the DX stations will
usually send the primary prefix assigned to their country. Here are some
N3DQU DE OK1AK 599 OK K
OK1AK DE N3DQU 599 PA K
OK1AK DE VE3CT 599 ON K
OK1AK DE ON4CAS 599 ON K
Note that ON sent from a VE3 station is Ontario province, while ON sent from
a Belgium station is Belgium, so you also have to pay attention to the
callsign! Also, don't forget that the serial number was removed from the
exchange, send only Call, RST and SPC. You did remember to set up a macro to
tell the others, right? Jay N3DQU.