[Motorola] Why 52.525

[D Jones]

Found this on a Yahoo group.  Take it for WHT it is worth.

Now from a real old timer. I go back to the 1950's on six meters when we 
were using old F.M. Link* radios with all square wiring and 807's in the 
finals. In those days FM was only authorized above 52.500 MHz. We used unheated 
crystals and wide open IF with 15 kHz (sorry,it was kc/s back then) deviation. 
Someone with a reasonable sense of understanding decided we needed to be 25 
KHz inside the FM band just to be safe in those days with not the greatest 
frequency measuring devices. So 52.525 came into being.



On Saturday, February 17, 2018 Jack Antonio <scr287 at att.net> wrote:
The answer to this may be lost to history, but I got to wondering... What was the driving force behind making the 6M FM simplex frequency 52.525?  Why that, and not some other frequency? Just curious. Jack Antonio WA7DIA ______________________________________________________________ Motorola mailing list Home: http://mailman.qth.net/mailman/listinfo/motorola Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Motorola at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html