The undesired ground wave signal shall be measured at or within the 0.5 mv/m ground wave contour of the desired station. These values apply to all classes of stations both day and night and are based on ground waves only. No adjacent channel interference is considered on the basis of an interfering sky wave. APPENDIX VI MILEAGE SEPARATION TABLES The required separations between broadcasting stations as tabulated below are based upon the following conditions: 1. The use of nondirectional antennas. 2. Antenna efficiencies (in mv/m at one mile for one kilowatt) Class I 225 mv/m 6. Groundwave transmission as shown on chart in Appendix IV. 7. Skywave transmission as shown on chart in Appendix V. 8. Protection to service areas as shown in Appendix II, Table I. 9. Ratio of desired to undesired signal: TABLE I REQUIRED DAY SEPARATION IN MILES BETWEEN BROADCAST STATIONS ON THE SAME CHANNEL 100 W 143 165 172 192 213 265 285 310 335 390 417 437 462 486 513 250 W 165 173 180 200 221 273 293 318 343 415 442 462 487 511 538 REQUIRED DISTANCE IN MILES FROM THE BOUNDARY OF A COUNTRY IN WHICH A CLASS I-A STATION IS LOCATED FOR DAYTIME OPERATION OF A CLASS II ON THE SAME CHANNEL |