The doc from a Chinese site says (Mounting Method) 5/8-11 Threaded installation
> Le 14 févr. 2019 à 21:09, Skip Withrow <skip.with...@gmail.com> a écrit : > > Hello Time-Nuts, > As I have been playing with some dual-band GPS receivers, I decided to > order a dual-band antenna to replace my permanent L1 antenna that I > use for all the GPSDOs. I purchased one of the Chinese TOPGNSS model > GN-GGB0710 units. Much smaller than the choke ring I currently have > up (which uses a 1"-10TPI thread). > > However, when I went down to the local hardware emporium to acquire > parts to assemble a mounting bracket I seem to have run into an issue. > A 5/8"-11 bolt appeared to be about right for the mounting threads, > but bound after a turn or two. So, I went over to the metric section > and found an M16-2 bolt. It started easily enough, but again bound > after a couple of turns. > > Back home I measured the thread pitch and got .08175 inches. Turns > out this is between the 5/8-11 thread (.0909") and the M16-2 thread > (.0787"). > > I looked up the Trimble antenna mounting specs and they specify 5/8-11 > for their geodetic survey antennas. > > Since the 5/8 hardware is a lot cheaper than the M16 I'll probably > just use a 5/8 bolt and just screw it on reasonably tight and call it > a day. Just wanted to give the list a heads-up. If there is a secret > mounting thread out there please let me know. > > Thanks, > Skip Withrow > > _______________________________________________ > 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. I am not a a vegetarian because I love animals. I’m a vegetarian because I hate plants. _______________________________________________ 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.