Said, We whined about the lack of a shield over the RF section as soon as the first M12 appeared. It all came down to the face that Motorola's "big" customers didn't want to pay the extra .50 for the shield. This is why I designed the shield can. It's kind of an ugly solution, but it allows the receiver to work better in environments containing RFI and temperature variations. If you want to have some fun, put an M12+ in an enclosure with a thermostatically controlled fan..... Wheeeeeeeee....
Randy -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Tuesday, May 02, 2006 7:32 PM To: [email protected] Subject: Re: [time-nuts] M12+ Temp sensitivity Hi Randy, It's a feature, of course :) I wish the marketing guys would have added the <$1 cost for the top/bottom metal can over the crystal and RF circuits (the layout engineer certainly wanted it and added the footprint to the PCB:) - like the old UT+'s etc. We all can't wait to see the M12M's come to market... I wonder if anyone has ever tried to replace the (discrete) VCTCXO ciruitry on the M12+ with an external OCXO? bye, Said _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
