Or use a Motorola crystal oven @ 85 degrees C ... Neil - WA6KLA
---- Original Message ---- From: [EMAIL PROTECTED] To: [email protected] Subject: Re: [Repeater-Builder] midland 13-509 tx freq stability... cap change? Date: Tue, 23 May 2006 08:43:33 -0700 >At 5/23/2006 07:20, you wrote: >> > >>One other thing you might try - tape a 100 ohm 1 watt resistor to >the >>side of the crystal and put 12 VDC across it. Not a pretty sight, >and > >If you're going to heat the crystal, might as well use something that >will >keep it at a more or less stable temperature: a 50 ohms 50 degree C >PTC >thermistor. Digikey has them for $1.68 each (manufacturer part # >RL3006-50-50-25-PTO). Desolder one of the leads & solder the disk >directly >onto one side of the crystal, ground the crystal case & apply a >regulated >voltage to the other side. > >Bob NO6B > > > > > > > >Yahoo! Groups Links > > > > > > > Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
