Originally Posted by kc7jty
According to the ARRL repeater directory 15 khz spacing in the east and 20 khz spacing in the west (where the dividing line is I don't know, maybe the Mississippi?). 146.52 is the call freq and 20 khz spacing = .52, .54, .56
I never heard of 30 khz spacing
This might be a question for the magnificent ZED.
Never heard of that before. East/west dividing line usually means the Mississippi River. Spacing has always been 30KHz everywhere as far as I know.
Back in the "old days" (mid-1970's and before), all repeater allocations were at 30KHz intervals. Many of the older repeater groups around here have held their original frequencies for 40+ years now. They only started going to 15KHz intervals when they ran out of 30KHz "slots." 20KHz spacing doesn't work real well when you started with 30KHz. Keep in mind that back before 15KHz spacing started, all 2m rigs used crystals. If you wanted to use a new (to you) repeater, it might cost you $20 for the "rocks." Even then, a number of repeater pairs were more popular. For instance, if you used a 146.34/.94 repeater locally, you at least had a decent shot that your rig would work elsewhere because it was one of the more popularly assigned repeater pairs.
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