[BC] 10 kHz/9 kHz switch in auto radios

Dan Strassberg dan.strassberg
Mon Jul 3 19:07:21 CDT 2006


Willie remarked that he had seen the switch in different non-obvious places
on different auto radios.

I wonder what percentage of stock radios in US cars have the switch. In
American Samoa and other places outside of the Western Hemisphere that are
US protectorates or whatever, the remaining AMs are moving to frequencies
that are divisible by 90 kHz (540, 630, 720...). These are the frequencies
that are compatible both with the frequencies receivable on the radios in US
cars (which represent most of what's on the road there) and with the
9-kHz-spacing Asian AM-channel-allocation scheme. If the car radios actually
do permit changing to the Asian frequencies, the stations are going to a lot
of trouble to solve a problem that could be solved instead by letting the
presumably small number of auto dealers in the area know where the switches
are. I suppose, however, that in remote areas like Samoa, having only 14
possible AM frequencies is not too great a problem.

--
Dan Strassberg, dan.strassberg at att.net
eFax 707-215-6367








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