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CASH 1700 NEW WEB SITE WITH PODCASTS, AND PHOTOS!

KJCB said:
ABQTom said:
The red lines on the radio-locator daytime *AND* nightime coverage maps are for the groundwave coverage at 5mV/m (five millivolts per meter).
Click to expand...

No, the red lines are 2 mV/m, which is lower than the noise floor in much of Southern California.
Click to expand...

Yes, they roughly conform to AM station 2 mv/m signals, but are not accurate as to measured contours... just theoretical. Conductivity and other isssues may change the theoretical pattern. The night contours do not show the interference free contour, either... which may be the greater limiting factor on an AM.

Based on in home and at work ZIP code data from Arbitron, in SoCal there is very little AM listening outside the 10 mV/m contour... precisely for the reason you specify: noise floor. Even in semi-urban or rural areas, there is seldom listening outside the 5 mV/m contour.

That's why a 10 kw daytime signal on 1700 has little chance of success... you just can't hear it in a great enough area. XEPE barely covers the SW quadrant of SD county day and night with a usable signal.
 
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