Run the plastic in a microwave oven, with a glass of water. Don’t use it if the plastic gets warm.
/Björn Sent from my iPhone > On 6 Sep 2019, at 21:45, David G. McGaw <david.g.mc...@dartmouth.edu> wrote: > > Also, as I have found, some plastics don't just delay but actually > absorb the signal. > > David N1HAC > >> On 9/6/19 2:28 PM, Bob kb8tq wrote: >> Hi >> >> The gotcha with putting anything on top of a GPS antenna is that it impacts >> the phase >> shift from the sat’s. How important that is gets quickly into just how picky >> you happen to be. >> >> Bob >> >>> On Sep 6, 2019, at 11:07 AM, Nick Sayer via time-nuts >>> <time-nuts@lists.febo.com> wrote: >>> >>> I’m late to the party, but my go-to antenna is the Gilsson marine antenna. >>> If it has a downside, it’s that it has a flat top instead of a cone. I’ve >>> got one mounted outside at our vacation home near Lake Tahoe, so we’ll see >>> whether snow loading becomes a problem shortly. The fix would presumably >>> just be a 3D printed plastic gnome’s cap, though even that might not be >>> useful if we get snow like we did last year. >>> >>> It has a standard 14 tpi 1” standard thread, though I’ve managed to make do >>> on more than one occasion with 3/4” NPT. >>> >>> Under normal circumstances, I routinely get 8 or more satellites with the >>> top SNRs in the 50s. >>> >>> I designed a 3D printed mount for mounting it on a flat surface (which I >>> needed to do here): >>> https://nam05.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.thingiverse.com%2Fthing%3A3664978&data=02%7C01%7Cdavid.g.mcgaw%40dartmouth.edu%7Cf3faa3a2e9ed46ead3fb08d732fc9785%7C995b093648d640e5a31ebf689ec9446f%7C0%7C0%7C637033932771963548&sdata=IHu%2Fco9fp3KRNuoi0NNUBqR8dyWAw6rKl8Bpr8m0Gl8%3D&reserved=0 >>> >>> <https://nam05.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.thingiverse.com%2Fthing%3A3664978&data=02%7C01%7Cdavid.g.mcgaw%40dartmouth.edu%7Cf3faa3a2e9ed46ead3fb08d732fc9785%7C995b093648d640e5a31ebf689ec9446f%7C0%7C0%7C637033932771963548&sdata=IHu%2Fco9fp3KRNuoi0NNUBqR8dyWAw6rKl8Bpr8m0Gl8%3D&reserved=0>. >>> >>> >>> >>>> On Aug 30, 2019, at 11:35 AM, Denny Page via time-nuts >>>> <time-nuts@lists.febo.com> wrote: >>>> >>>> Could be. They sell a aluminum mounting rod for use with a magnetic base >>>> which mates with the unit perfectly, so I sorta assumed it was >>>> intentional. Tapering helps prevents over tightening / over extension >>>> which could damage the casing. >>>> >>>> Denny >>>> >>>> >>>>> On Aug 30, 2019, at 10:49, Bryan _ <bpl...@outlook.com> wrote: >>>>> >>>>> Or a mfg. defect and thus why on the surplus market. >>>>> >>>>> -=Bryan=- >>>>> >>>>> ________________________________ >>>>> From: time-nuts <time-nuts-boun...@lists.febo.com> on behalf of Denny >>>>> Page via time-nuts <time-nuts@lists.febo.com> >>>>> Sent: August 29, 2019 7:39 PM >>>>> To: Discussion of precise time and frequency measurement >>>>> <time-nuts@lists.febo.com> >>>>> Cc: Denny Page <dennyp...@me.com> >>>>> Subject: Re: [time-nuts] GPS Antennas >>>>> >>>>> I think several people have run into that issue, including myself. It >>>>> seems designed for a slightly tapered rod. Easy to fix with the right >>>>> tool. >>>>> >>>>> Denny >>>>> >>>>>> On Aug 29, 2019, at 16:41, Ben Hall <kd5...@gmail.com> wrote: >>>>>> >>>>>> Only issue with mine was that the thread wasn't fully cut, so I modified >>>>>> an old taper tap to be a bottoming tap with the bench grinder and >>>>>> finished tapping the hole to the bottom. >>>> >>>> _______________________________________________ >>>> time-nuts mailing list -- time-nuts@lists.febo.com >>>> To unsubscribe, go to >>>> https://nam05.safelinks.protection.outlook.com/?url=http%3A%2F%2Flists.febo.com%2Fmailman%2Flistinfo%2Ftime-nuts_lists.febo.com&data=02%7C01%7Cdavid.g.mcgaw%40dartmouth.edu%7Cf3faa3a2e9ed46ead3fb08d732fc9785%7C995b093648d640e5a31ebf689ec9446f%7C0%7C0%7C637033932771973545&sdata=yFIp1EQIDNQfOuqkyUAIY2QjSq4yNYMmrt6wi%2Bdu21M%3D&reserved=0 >>>> and follow the instructions there. >>> _______________________________________________ >>> time-nuts mailing list -- time-nuts@lists.febo.com >>> To unsubscribe, go to >>> https://nam05.safelinks.protection.outlook.com/?url=http%3A%2F%2Flists.febo.com%2Fmailman%2Flistinfo%2Ftime-nuts_lists.febo.com&data=02%7C01%7Cdavid.g.mcgaw%40dartmouth.edu%7Cf3faa3a2e9ed46ead3fb08d732fc9785%7C995b093648d640e5a31ebf689ec9446f%7C0%7C0%7C637033932771973545&sdata=yFIp1EQIDNQfOuqkyUAIY2QjSq4yNYMmrt6wi%2Bdu21M%3D&reserved=0 >>> and follow the instructions there. >> >> _______________________________________________ >> time-nuts mailing list -- time-nuts@lists.febo.com >> To unsubscribe, go to >> https://nam05.safelinks.protection.outlook.com/?url=http%3A%2F%2Flists.febo.com%2Fmailman%2Flistinfo%2Ftime-nuts_lists.febo.com&data=02%7C01%7Cdavid.g.mcgaw%40dartmouth.edu%7Cf3faa3a2e9ed46ead3fb08d732fc9785%7C995b093648d640e5a31ebf689ec9446f%7C0%7C0%7C637033932771973545&sdata=yFIp1EQIDNQfOuqkyUAIY2QjSq4yNYMmrt6wi%2Bdu21M%3D&reserved=0 >> and follow the instructions there. > > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
