On Wed, 7 Nov 2012 18:50:16 -0500, "Tom" wrote:

Does the Shakespear or standard marine antenna base that is 1" 14tpi fit
anything else?

Yes, some farm impliments that I blundered across in the 1970's.
1"-14 UNS (class 2a and 2b) are used only for marine mounts. UNS
means "Unified National Special" which makes it a defacto standard
thread.

What about 1" national fine thread hex bolt? Or 3/4" npt plumbing type
thread?

Did you perhaps notice that the 1"-14 UNS thread is a straight thread,
while all the NPT plumbing threads are tapered?

Anyone have any luck using something else without ruining the
threads? I cannot use one of their oem swivel base things for the
application I thinking of doing.

I'll do everyone a favor and not describe some of the antenna mounting
abortions that I've seen in the Moss Landing and SCZ harbors, and at a
former employer in the marine biz. Let's just say that it can be made
to fit a variety of non-standard mounts, in a wide variety of ways,
most of really disgusting.

thnx for any advice,

So, what are you trying to accomplish?

--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558

I wasn't sure if the threads were straight as the bolt or tapered as npt
(national pipe taper).

I was trying to avoid buying the actual proper thread base (OEM), thought a
pipe nipple would work but it didn't, thought a bolt would work but it
didn't.

So was wondering if the threads were chewed and that was the reason it
wasn't working. I don't have that size tap anyway. Mabey a pipe tap but not
a 1" national fine thread straight tap.

Wanted to make a base but now see they are only 20 bucks on fleabay

What would be the best antenna for 2m one could fit up within the 8ft
fiberglass shell? That simple cutting of the coax can't be the best can it?
This new fiberglass whip I just got is one of the good old ones, very solid
and not flaky or nothing like the new shakespear ones they are producing. My
cover breaks those too easy.






"Jeff Liebermann" wrote in message
...
On Wed, 7 Nov 2012 18:50:16 -0500, "Tom" wrote:

Does the Shakespear or standard marine antenna base that is 1" 14tpi fit
anything else?

Yes, some farm impliments that I blundered across in the 1970's.
1"-14 UNS (class 2a and 2b) are used only for marine mounts. UNS
means "Unified National Special" which makes it a defacto standard
thread.

What about 1" national fine thread hex bolt? Or 3/4" npt plumbing type
thread?

Did you perhaps notice that the 1"-14 UNS thread is a straight thread,
while all the NPT plumbing threads are tapered?

Anyone have any luck using something else without ruining the
threads? I cannot use one of their oem swivel base things for the
application I thinking of doing.

I'll do everyone a favor and not describe some of the antenna mounting
abortions that I've seen in the Moss Landing and SCZ harbors, and at a
former employer in the marine biz. Let's just say that it can be made
to fit a variety of non-standard mounts, in a wide variety of ways,
most of really disgusting.

thnx for any advice,

So, what are you trying to accomplish?

--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558

On Wed, 7 Nov 2012 22:13:50 -0500, "Tom" wrote:

I wasn't sure if the threads were straight as the bolt or tapered as npt
(national pipe taper).

1"-15 UNS are straight threads. If it's expected to be under
pressure, it's tapered. If there's no pressure involved, it's usually
straight threads (or no threads).

I was trying to avoid buying the actual proper thread base (OEM), thought a
pipe nipple would work but it didn't, thought a bolt would work but it
didn't.

So was wondering if the threads were chewed and that was the reason it
wasn't working. I don't have that size tap anyway. Mabey a pipe tap but not
a 1" national fine thread straight tap.

1" UNF is 12 TPI (threads per inch).
1" UNC is 9 TPI
http://www.gewinde-normen.de/en/unified-fine-thread.html?

Wanted to make a base but now see they are only 20 bucks on fleabay

$13 for plastic:
http://www.ebay.com/itm/150781789267
Plenty more to choose from:
www.ebay.com/sch/i.html?_nkw=marine+antenna+mount

What would be the best antenna for 2m one could fit up within the 8ft
fiberglass shell?

What's a "shell"? I'm visualizing a giant fiberglass clam shell. Very
marine looking, but not your typical vessel. Can you be a bit more
specific?

Does 2m mean 144-148MHz ham radio, or a 6ft marine fiberglass antenna?

That simple cutting of the coax can't be the best can it?

I don't understand. That "best" at doing what?

This new fiberglass whip I just got is one of the good old ones, very solid
and not flaky or nothing like the new shakespear ones they are producing. My
cover breaks those too easy.

First a "shell", than an ambiguous use of 2meters, followed by a vague
"best", and now a "cover". Perhaps you've had an overdose of election
year rhetoric and are trying to emulate the politicians by being
vague. Hopefully, it's not contageous. Some clarification would be
helpful.

If you look inside the older (1970') 3ft and 6ft fiberglass whips,
you'll get an interesting surprise. Most of the antenna is sticky
back copper tape, about 1/4" wide, and glued to the inside of the
fiberglass taper. The fatter antennas are usually better built out of
copper plated welding rod. The best are stainless rod. The problem
is you can't really tell unless you tear it apart.

How to mount a 2.4GHz omni on a 1"-14 marine antenna mount:
http://802.11junk.com/jeffl/antennas/marine-omni/index.html

--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558

[quote='Tom[_8_];798370']

I was trying to avoid buying the actual proper thread base (OEM), thought a
pipe nipple would work but it didn't, thought a bolt would work but it
didn't.

Wanted to make a base but now see they are only 20 bucks on fleabay

What would be the best antenna for 2m one could fit up within the 8ft
fiberglass shell? That simple cutting of the coax can't be the best can it?




Well Jeff The OP said he would like to use the marine antenna in place of a 2 meter antenna.
YOU ANSWERED YOUR OWN QUESTION WHEN YOU ADVISED HIM THAT THERE WAS TOO MUCH DISPARITY BETWEEN TWO METERS AND THE MARINE BAND.
That was my point when I said to throw it away and buy another antenna.

Your advice was that although the X510 was about the same size, it had too much gain to be of use on a rolling ship.

Then you just go to the next obvious antenna.
The Diamond V2000 would give the OP 2 meters, 70 CM and also 6 meters with the same antenna and is only 6' long - or there abouts.