[time-nuts] Mounting thread on TopGNSS GN-GGB0710

[John Ackermann. N8UR]

The limited knowledge I've obtained about survey antenna is that almost all use a straight 5/8-11 thread.  There are various 5/8 adapters available.  I use one to 1/4-20 to mount the antenna on a camera tripod.

On Oct 30, 2019, 3:17 AM, at 3:17 AM, Hal Murray <hmurray at megapathdsl.net> wrote:
>
>> I have two of these. They are both 5/8-11, however they were both
>tapered.
>> The taper can be removed with a hand tap.  
>
>Are tapered threads used for something other than pipes?
>
>
>> The ones I���ve seen all thread fine onto the standard survey poles.
>I believe
>> that is a 5/8-11 thread. 
>
>Do survey poles have a tapered thread, or are the threads short enough
>not to 
>encounter the tapered part of the hole?  Google found lots of adapters.
> None 
>of the threads looked tapered.
>
>I'm not a machinist (but my dad was).  Wiki says it's common to start
>with a 
>tapered tap because they are easier to get started, then follow up with
>a 
>bottoming tap if necessary.  Did they just forget that step for a batch
>of 
>antennas?
>
>
>-- 
>These are my opinions.  I hate spam.
>
>
>
>
>
>
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