Re: [time-nuts] GPS antenna in snowy environment (was: LEA-6T Software.)

2014-08-28 Thread Graham Haddock
The similar, and more serious issue is bird-poop. The pointed cone shapes you see for commercial timing receiver antennas are as much to keep birds from sitting on top of the antennas as it is to get the snow off. At least snow will eventually melt off. --- Graham / KE9H == On Thu, Aug 28, 20

Re: [time-nuts] Proper way to manually connect Vfc

2014-08-17 Thread Graham Haddock
There are several things to think about that might create errors or noise. 1.) Is the voltage source feeding the "top" of your multi-turn pot stable with temperature? Similarly, is the low frequency noise on the voltage source feeding the 'top' of your multi-turn pot quiet enough? You are someti

Re: [time-nuts] CW12-TIM

2014-07-12 Thread Graham Haddock
Shane: The question I think that is being asked is ... What does "precise" mean to you? To the nearest order of magnitude, what kind of accuracy are you looking for on your three signals. This defines the kind of system you will need. This group normally aspires to the more accurate end of the s