NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: How Many Chronometers?
From: Philip Lange
Date: 2009 Sep 20, 09:38 -0400
From: Philip Lange
Date: 2009 Sep 20, 09:38 -0400
Since it has already been discovered by the list that it is easier to maintain temperatures above ambient, eg. crystal heaters in HF radios, than below, i would suggest a small well insulated box with a thermostatically controlled heater (one or two watts, 12-15v DC?). The Watch could be viewed through a double or triple insulated glass window so as to not disturb the thermal equilibrium. This would be a nice project not beyond the capabilities of many of us. A couple of LED's to indicate operating temperature and power on and it would be a nice piece of kit to have at the nav station. Philip , 2009-09-20 at 01:40 -0700, Gary LaPook wrote: > So, if the cabin can't be maintained at around 25ºC then an alternate > way to stabilize the watches can be utilized. Simply buy a small > cooler and put the watches and some ice in it and establish their > rates at this cooler temperature, they should be running slow. -- USSV ORYOKI Edenton North Carolina 'There's no point in having a plan if you're not going to pretend to follow it.' --~--~---------~--~----~------------~-------~--~----~ NavList message boards: www.fer3.com/arc Or post by email to: NavList@fer3.com To , email NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---
