Hello Discussion,
Monday, February 25, 2019
NP and BSP (National Pipe and British Standard Pipe) thread size like
1/4" NP are not really indicative of actual diameter per se, plus you
have taper seal threads (NSPT and BSPT) to bear in mind. Threads are
a subject in themselves :)
On 2/25/19 8:44 AM, David Witten wrote:
The bit of threaded tubing I found at the hardware store that fits
perfectly is labeled:
ProLine plumbing and heating products
BN-750NLB
877250
Nipple
(Niple)
1/4 inch x 1/4 inch x 6 inch
MIP
for installation instructions visit:
www.bkproducts.com
I was
The bit of threaded tubing I found at the hardware store that fits
perfectly is labeled:
ProLine plumbing and heating products
BN-750NLB
877250
Nipple
(Niple)
1/4 inch x 1/4 inch x 6 inch
MIP
for installation instructions visit:
www.bkproducts.com
I was surprised by the 1/4 inch bit, as it seems
3/8" (nominal bore) NPT thread has an outer diameter near 5/8" and has 18
threads/inch somewhat finer than the 5/8 11 TPI used for most surveying antennae
Bruce
> On 23 February 2019 at 11:06 David Witten wrote:
>
>
> FWIW
>
> I just poked around my shop and found something that fit
FWIW
I just poked around my shop and found something that fit perfectly. It was
a 5/8 inch plumbing 'barb'. So I just went to to a big-box hardware store
(Lowes) and went to the plumbing section. The sales person agreed with me
that it seemed to be tapered and I found a nice 8 inch length of
Hi
Indeed this is exactly what is done with a pipe thread. It’s not designed to be
fiddled
with a lot. You put it together and that’s it forever and ever. Some bright
engineer
might have decided that antenna mounts fit in the same category.
My bet still would be on a tool or die that was a
NPT or BSPT pipe thread perhaps?
Bruce
> On 15 February 2019 at 14:08 Bob kb8tq wrote:
>
>
> Hi
>
> Indeed for an antenna that is going on a mount one time and one time only a
> “tapered” thread
> might make sense. Crank it down and it locks in place …..
>
> Bob
>
> > On Feb 14, 2019, at
Hi
Indeed for an antenna that is going on a mount one time and one time only a
“tapered” thread
might make sense. Crank it down and it locks in place …..
Bob
> On Feb 14, 2019, at 5:34 PM, Hal Murray wrote:
>
>> I’ve had no issues with 5/8-11 going into any of the Chinese antennas so
>>
> Iâve had no issues with 5/8-11 going into any of the Chinese antennas so
> far.
I have at least one antenna with threads that seem right but don't go in more
than a few turns. I'll try to find it if people want more data.
--
These are my opinions. I hate spam.
Hi:
5/8-11 is a standard surveying tripod head size.
https://prc68.com/I/Tripods.html#Head-0.625x11Solid
It may be you have defective male or female threads that need to be chased.
--
Have Fun,
Brooke Clarke
https://www.PRC68.com
http://www.end2partygovernment.com/2012Issues.html
axioms:
1.
The doc from a Chinese site says
（Mounting Method）
5/8-11 Threaded installation
> Le 14 févr. 2019 à 21:09, Skip Withrow 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
Hi
I’ve had no issues with 5/8-11 going into any of the Chinese antennas so far.
Bob
> On Feb 14, 2019, at 3:09 PM, Skip Withrow wrote:
>
> 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
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
13 matches
Mail list logo
