[time-nuts] repairing Maser threads
Hi Corby, I don't have experience with the ion pump you mention but have repaired several rotators (aluminium casting) where the threads have become very worn or stripped using a product called recoil. These are manufactured in Australia but available around the world. You drill out the drill specified for the size kit you are using and then tap the hole with the tap provided in the kit. Once the hole is ready you insert the 'Recoil' using the special tool provided and then break off and remove the tang following the instructions. Result - a threaded hole probably stronger than the original. These may also be known as Helicoils. There is another method that uses a special solder but that requires heating the object up to the temperature needed to melt the solder and may not be suitable for what you want. Good Luck with the repair Regards Malcolm ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
[time-nuts] GPS Display clock
Dave If you don't mind building it yourself and customising some PIC code try this _http://www.g4jnt.com/GPLOCDIS.ZIP_ (http://www.g4jnt.com/GPLOCDIS.ZIP) I used a different GPS unit and found a minor bug in the code because of that but if you go down this route I can let you have the updated code if Andy has not updated his version. Regards Malcolm G0MIC ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Power Back-up
On Sun, 9 Aug 2009 Robert Darlington wrote I use a 100 pound APC UPS (Smart-UPS 2200XL) that I was given a few years ago. I suspect it will run a thunderbolt for a month. Check eBay and you can probably pick one up cheap. -bob I tried to use a Trust UPS to transport a GPSDO for a demonstration so that I would not have to wait for the warm up and stabilisation period. The attempt failed because the UPS cut out after a few minutes despite the UPS being proven capable of running a 60 Watt light bulb for an hour. After emailing the distributors it turned out that the unit was designed to cut out if the load was not high enough. The 8 Watts the GPSDO used was not enough in this case despite the UPS theoretically being able to support it for over 7 hours. You may need to check out the specification of the UPS to see that the minimal loading will not be a problem if you are looking for a long support time from a UPS. Regards Malcolm G0MIC ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
