I'd like to modify an Arrow OSJ 146/440 to use an N connector instead of
SO239. This would require an N-to-3/8"-24 stud. Allen Lowe hasn't
heard of such a thing, which is why he doesn't offer that antenna with
an N-connector. Does anyone here know if such a beast exists? What
would it take to have some of these custom made?

--
David Griffith
--- Put my last name where it belongs

On Mar 21, 3:35*pm, (David Griffith) wrote:
I'd like to modify an Arrow OSJ 146/440 to use an N connector instead of
SO239. *This would require an N-to-3/8"-24 stud. *Allen Lowe hasn't
heard of such a thing, which is why he doesn't offer that antenna with
an N-connector. *Does anyone here know if such a beast exists? *What
would it take to have some of these custom made?

--
David Griffith
* --- Put my last name where it belongs

I'm a bit confused about what, exactly, you want... is it something
to go from an N connector "chassis mount" socket's center pin to a
3/8-24 stud? Or some sort of adapter to go between the N series
5/8"-24 thread and a 3/8"-24 thread? A picture would probably be
worth lots of words...

Cheers,
Tom

K7ITM wrote:
On Mar 21, 3:35*pm, (David Griffith) wrote:
I'd like to modify an Arrow OSJ 146/440 to use an N connector instead of
SO239. *This would require an N-to-3/8"-24 stud. *Allen Lowe hasn't
heard of such a thing, which is why he doesn't offer that antenna with
an N-connector. *Does anyone here know if such a beast exists? *What
would it take to have some of these custom made?

I'm a bit confused about what, exactly, you want... is it something
to go from an N connector "chassis mount" socket's center pin to a
3/8-24 stud? Or some sort of adapter to go between the N series
5/8"-24 thread and a 3/8"-24 thread? A picture would probably be
worth lots of words...

See Ebay item number 380322578383. This device connects the center
conductor of an SO239 to a 3/8"-24 bolt upon which a tall nut is
screwed. To use it, you stick it up through a piece of metal (say, a
bracket), put an insulating washer on that, add the tall nut, then put a
whip adapter in the nut. I want something like that for an N-connector.

--
David Griffith
--- Put my last name where it belongs

On Tue, 22 Mar 2011 08:00:34 +0000, David Griffith rearranged some
electrons to say:

K7ITM wrote:
On Mar 21, 3:35Â*pm, (David Griffith) wrote:
I'd like to modify an Arrow OSJ 146/440 to use an N connector instead
of SO239. Â*This would require an N-to-3/8"-24 stud. Â*Allen Lowe hasn't
heard of such a thing, which is why he doesn't offer that antenna with
an N-connector. Â*Does anyone here know if such a beast exists? Â*What
would it take to have some of these custom made?

I'm a bit confused about what, exactly, you want... is it something to
go from an N connector "chassis mount" socket's center pin to a 3/8-24
stud? Or some sort of adapter to go between the N series 5/8"-24
thread and a 3/8"-24 thread? A picture would probably be worth lots of
words...

See Ebay item number 380322578383. This device connects the center
conductor of an SO239 to a 3/8"-24 bolt upon which a tall nut is
screwed. To use it, you stick it up through a piece of metal (say, a
bracket), put an insulating washer on that, add the tall nut, then put a
whip adapter in the nut. I want something like that for an N-connector.

Or just use something like this with the SO-239...

http://www.alliedelec.com/search/pro...px?SKU=2020635

On Mar 22, 1:00*am, (David Griffith) wrote:
K7ITM wrote:
On Mar 21, 3:35*pm, (David Griffith) wrote:
I'd like to modify an Arrow OSJ 146/440 to use an N connector instead of
SO239. *This would require an N-to-3/8"-24 stud. *Allen Lowe hasn't
heard of such a thing, which is why he doesn't offer that antenna with
an N-connector. *Does anyone here know if such a beast exists? *What
would it take to have some of these custom made?
I'm a bit confused about what, exactly, you want... *is it something
to go from an N connector "chassis mount" socket's center pin to a
3/8-24 stud? *Or some sort of adapter to go between the N series
5/8"-24 thread and a 3/8"-24 thread? *A picture would probably be
worth lots of words...

See Ebay item number 380322578383. *This device connects the center
conductor of an SO239 to a 3/8"-24 bolt upon which a tall nut is
screwed. *To use it, you stick it up through a piece of metal (say, a
bracket), put an insulating washer on that, add the tall nut, then put a
whip adapter in the nut. *I want something like that for an N-connector.. *

--
David Griffith
* --- Put my last name where it belongs

Ah, OK...what the ebay picture looks like to me is an UHF socket whose
"rear" pin becomes a male 3/8-24, so a 3/8-24 coupling nut ("long
nut") can go over it to clamp the insulating washers to the bracket.
The problem I see with that is you couldn't just make a simple 3/8-24
stud and solder it to an N center pin, and expect it would hold up
very well with the tension on the solder joint. It would be pretty
trivial to make on a lathe I'd be happy to do it, but you probably
wouldn't like the price for one. They'd be cheap (relatively) if you
wanted 10,000 of them. ;-) Then you also need the insulating
washers--maybe you get those from the existing antenna? If what I
described in the first sentence is what you're looking for, check CB
stores for a 3/8-24 to 1/8" whip adapter...

Seems like a better mechanical arrangement would be to have the whip
attached securely to the mounting bracket, and the N connector also
securely attached to the mounting bracket, arranged to there's
relatively little strain on the center pin of the N connector...

If an SO239 to N adapter works, MPJA has them for about a third the
price of Allied... see MPJA # 0522-RC.

Cheers,
Tom

K7ITM wrote:
Seems like a better mechanical arrangement would be to have the whip
attached securely to the mounting bracket, and the N connector also
securely attached to the mounting bracket, arranged to there's
relatively little strain on the center pin of the N connector...

What seems to me that would work would be some variation on a U shaped bracket:

(pardon the ASCII art)

II (antenna)
_____________
| IIII |
| II |NNN
| L-----|NNN
M |M |NNN
M |M |
M |M |
| |

N is the N connector
M is the mounting bolt for the bracket.
If the wire is stranded, then there would be little or no stress on the center
pin of the N connector.

Or if you want the wire out the bottom,

II (antenna)
_____________
| IIII
| II
M|M |
M|M |
| NNNNN
_____NNNNN___
NNNNN
NNNNN
NNNNN

73,

Geoff.

--
Geoffrey S. Mendelson N3OWJ/4X1GM
Those who cannot remember the past are condemned to misquote it.

Hey OT:

Exactly what I would do almost.

Homebrew my own from a Type N bulkhead chassis mount connector as seen
he
https://emersonconnectivity.com/OA_M...orBrochure.pdf

I'd solder a 3/8-24 by 2 inch SS stud onto the center pin.

I'd take a stick of JB weld putty type epoxy and make a form around
the N connector and stud

Thread on a Hex threaded SS or chrome 3/8-24 coupler

Viola' a Type N gumdrop mount.

73 OM
de
n8zu







On Mar 22, 12:29*pm, "Geoffrey S. Mendelson"
wrote:
K7ITM *wrote:
Seems like a better mechanical arrangement would be to have the whip
attached securely to the mounting bracket, and the N connector also
securely attached to the mounting bracket, arranged to there's
relatively little strain on the center pin of the N connector...

What seems to me that would work would be some variation on a U shaped bracket:

(pardon the ASCII art)

* * * * * * * * II (antenna)
* * * * * _____________
* * * * * | * *IIII * |
* * * * * | * * II * *|NNN
* * * * * | * * L-----|NNN
* * * * M |M * * * * *|NNN
* * * * M |M * * * * *|
* * * * M |M * * * * *|
* * * * * | * * * * * |

N is the N connector
M is the mounting bolt for the bracket.
If the wire is stranded, then there would be little or no stress on the center
pin of the N connector.

Or if you want the wire out the bottom,

* * * * * * * * II (antenna)
* * * * * _____________
* * * * * | * *IIII *
* * * * * | * * II * *
* * * * *M|M * *|
* * * * *M|M * *|
* * * * * | * *NNNNN
* * * * * _____NNNNN___
* * * * * * * *NNNNN
* * * * * * * *NNNNN
* * * * * * * *NNNNN

73,

Geoff.

--
Geoffrey S. Mendelson N3OWJ/4X1GM
Those who cannot remember the past are condemned to misquote it.

On Mar 21, 6:35*pm, (David Griffith) wrote:
I'd like to modify an Arrow OSJ 146/440 to use an N connector instead of
SO239. *This would require an N-to-3/8"-24 stud. *Allen Lowe hasn't
heard of such a thing, which is why he doesn't offer that antenna with
an N-connector. *Does anyone here know if such a beast exists? *What
would it take to have some of these custom made?

--
David Griffith
* --- Put my last name where it belongs

What you may want to consider is a type N pigtail terminated with the
correct size of ring terminal. Add a wire mesh grip strain relief and
you'd have a pretty solid installation.
Alternatively you could mount a type N chassis connector to an angle
bracket and wire the center pin to a plain 3/8 24 stud insulated
stud.
--
Tom Horne, W3TDH

Petrov muss in der Formel 1 bleiben, egal ob mit Talent gesegnet oder nicht. Wie sonst will man den Russen sowas schmackhaft machen? Alles Marketing. Petrov hat sich besser geschlagen als ich dachte, ich hätte aber lieber einen Sutil oder Klien in das Cockpit gehauen.