[time-nuts] GPS antenna in silicon/RTV encapsulation
jimlux at earthlink.net
Tue Apr 15 12:27:37 EDT 2014
On 4/15/14, 8:13 AM, EWKehren at aol.com wrote:
> Working off list on a super high performance GPSDO but low cost thanks to a
> time nut (sorry forgot his name) he directed me to DX.com which have ublox
> with antenna for lwss than $ 23. Super performance and though they are out
> of the one with 1 pps all you have to do is solder directly to the module.
> Have both versions. Attached you see what I did with the antenna but found
> out the hard way that when it rains the concave bottom fills with water,
> still works but not as good. So last night I made it flat with 3M Marine
> 5200 slow cure that I have extensive experience with from boating. Will take a
> full week to cure but if it does not work I can always remove it and start
There is a similar approach using a small "display dome" which is
basically a round bottom beaker kind of shape designed to go on a wooden
base. It can just as easily go on a big cork or stopper, or a disk cut
out of a HDPE cutting board.
Googling "display dome" will show you copious choices. or somewhere like
Of course, if you have a supply of canning jars or babyfood jars, then
you can use those. Nothing says the jar has to be mounted with the axis
vertical. You could do it sideways (like a ship in a bottle) to help
solve the "rain in the punt" problem.
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