08-31-2013, 02:30 PM
Fully closed is ~530 KHz. Fully open would be between 1500 and 1700 KHz, depending upon design. 1010 would generally be just a bit past the middle, toward the high end. I've found the middle to generally be around 950 or so. These of course are very course approximations, usually one would use the dial scale on the radio. If the dial scale is attached to the cabinet, you can place a piece of tape on the dial scale, pencil in the primary frequencies, then move the piece of tape to the chassis.
