On 16/09/2014 17:02, gareth wrote:

Still, for thee and me, it represents acertain degree of job protection!

What job's that then?

On 16/09/2014 16:53, Jerry Stuckle wrote:

Ah, heck - don't make it so easy. A REAL HAM would mine and smelt his
own ore (using a garden trowel and blowtorch). He would create his own
insulating material from raw materials (bakelite would probably be
easiest), and finally shape and assemble the final product.

A real ham wouldn't make coaxial connectors.

A real ham would be using a link-coupled output from his PA, to a
balanced transmission line.

PS - don't feed the troll :-)

On 9/16/2014 12:33 PM, Jeefaw K. Effkay wrote:
On 16/09/2014 16:53, Jerry Stuckle wrote:

Ah, heck - don't make it so easy. A REAL HAM would mine and smelt his
own ore (using a garden trowel and blowtorch). He would create his own
insulating material from raw materials (bakelite would probably be
easiest), and finally shape and assemble the final product.

A real ham wouldn't make coaxial connectors.

A real ham would be using a link-coupled output from his PA, to a
balanced transmission line.

PS - don't feed the troll :-)


Why said they were coax connectors for a transmitter? I use various
types of connecters for many things. For instance, my Tektronix scope
has BNC connectors for the probes. And my rigs have connectors for the
microphones.

Plus I wouldn't use balanced line in the car.

I use a lot of connectors for a lot of different things

--
==================
Remove the "x" from my email address
Jerry Stuckle

==================

On 16/09/2014 17:49, Jerry Stuckle wrote:
On 9/16/2014 12:33 PM, Jeefaw K. Effkay wrote:
On 16/09/2014 16:53, Jerry Stuckle wrote:

Ah, heck - don't make it so easy. A REAL HAM would mine and smelt his
own ore (using a garden trowel and blowtorch). He would create his own
insulating material from raw materials (bakelite would probably be
easiest), and finally shape and assemble the final product.

A real ham wouldn't make coaxial connectors.

A real ham would be using a link-coupled output from his PA, to a
balanced transmission line.

PS - don't feed the troll :-)


Why said they were coax connectors for a transmitter? I use various
types of connecters for many things. For instance, my Tektronix scope
has BNC connectors for the probes. And my rigs have connectors for the
microphones.

Real hams don't use microphones. They only use CW :-)

Plus I wouldn't use balanced line in the car.

OK - you win :-)

On Tue, 16 Sep 2014, Jeefaw K. Effkay wrote:

On 16/09/2014 16:53, Jerry Stuckle wrote:

Ah, heck - don't make it so easy. A REAL HAM would mine and smelt his
own ore (using a garden trowel and blowtorch). He would create his own
insulating material from raw materials (bakelite would probably be
easiest), and finally shape and assemble the final product.

A real ham wouldn't make coaxial connectors.

A real ham would be using a link-coupled output from his PA, to a balanced
transmission line.

And you can certainly make ladder line yourself, once you figure out
something for the spacers. I doubt anyone's ever made coax at home.

Michael

PS - don't feed the troll :-)

"Michael Black" wrote in message
news:alpine.LNX.2.02.1409161411150.29263@darkstar. example.org...
I doubt anyone's ever made coax at home.

It would be an interesting exercise to conceive of the mechanism
for weaving the braid, such that it was tight onto the dielectric

In rec.radio.amateur.homebrew Michael Black wrote:
On Tue, 16 Sep 2014, Jeefaw K. Effkay wrote:

On 16/09/2014 16:53, Jerry Stuckle wrote:

Ah, heck - don't make it so easy. A REAL HAM would mine and smelt his
own ore (using a garden trowel and blowtorch). He would create his own
insulating material from raw materials (bakelite would probably be
easiest), and finally shape and assemble the final product.

A real ham wouldn't make coaxial connectors.

A real ham would be using a link-coupled output from his PA, to a balanced
transmission line.

And you can certainly make ladder line yourself, once you figure out
something for the spacers. I doubt anyone's ever made coax at home.

Michael

I've made short lengths of rigid, air dielectric coax for UHF projects
from hobby store brass tubing on several occasions.



--
Jim Pennino

Jerry Stuckle wrote in news:lv9mdp$a3o$1@dont-
email.me:

Ah, heck - don't make it so easy. A REAL HAM would mine and smelt his
own ore (using a garden trowel and blowtorch). He would create his own
insulating material from raw materials (bakelite would probably be
easiest), and finally shape and assemble the final product.



Nice. A similar logic applies to knowledge in general. I once got flamed on a
forum for stating a bit of (correct) info simply because it seemed to someone
that I had picked it up from others, and they felt I hadn't contributed
enough of my own experience to their field (lasering is a ridiculously
expensive hobby, so I accept no fault there, given that offering stuff or
knowledge for free usually gets the upturned nose anyway). Also, the attitude
denies the value of all teaching, so I don't take it too seriously even when
I get hurt by it.

If we do too much, there will be someone to flame us. That same person might
be the first to flame if we do too little.

On 17/09/14 01:14, Lostgallifreyan wrote:
"gareth" wrote in news:lv91j4$gv9$1@dont-
email.me:

how difficult
it is to manufacture our own plugs and sockets, despite that BNC and N have
been around for 70 years, with SMC some time later!

Why do you want to do that? Some wheels are definitely best not reinvented.
BNC's can be had on eBay as easily as used matchsticks used to be seen on a
street, it's not like we have to make do without. N connectors are expensive,
but there are likely good reasons for that, partly bulk size, precision
requirements, and a lower size of market (by far) than for BNC.

Unless you wanted a bespoke connector at great expense to either do something
really new, or to freeze out an easy chance of anyone connecting to your
stuff, there is no point, the costs are extreme.

I've thought about doing similar from time to time. Not for RF mind
you, BNC serves me well here. My needs are more for audio/control
connectors.

My connection system has varied a bit over the years. In the beginning
I used 8-pin DIN connectors, which worked okay, but didn't quite have
enough contacts to handle all the controls I wanted.

I was looking for a connector that would handle:
- stereo audio (so 3 or 4 lines, depending if they were to share a
return line)
- microphone audio (2 lines)
- PTT
- 4 direction buttons

8 pins wasn't going to suffice for this. So I moved to DB15HD
connectors. Some might recognise these on VGA video cards. I used an
opposite polarity so as to prevent confusing them with a video card.
(one of my adaptor leads allowed me to use headsets with a computer)

These were convenient being all on one connector, and small, but they do
*not* like being exposed to weather much. I was replacing them on a
regular basis. The regular DB15 might be better, I haven't tried.

My next stop has been to split it into two connectors: a DIN5 carries
headset audio (microphone and two speakers), and the PTT and buttons are
on a separate DIN6.

This is more reliable, although I note the connectors have a tendency to
come apart from time to time. I put up with it though, because the same
connectors have lasted much better than the DB15HDs did.

If I did "my own", I'd probably use 6.5mm phono plugs taped together.
Crude, but effective. Kenwood still use a similar arrangement for their
handhelds and it works well enough there.

Stuart Longland wrote in news:ljdoeb-
:

8 pins wasn't going to suffice for this. So I moved to DB15HD
connectors. Some might recognise these on VGA video cards. I used an
opposite polarity so as to prevent confusing them with a video card.
(one of my adaptor leads allowed me to use headsets with a computer)

These were convenient being all on one connector, and small, but they do
*not* like being exposed to weather much. I was replacing them on a
regular basis. The regular DB15 might be better, I haven't tried.


I remember someone posting about a motorbike and weathering of various
plugs (maybe you?). I tried to find any stored posts but failed, having
restored a broken X-news dir from a much earlier saved copy, losing a year's
archiving in the process apparently. I can't remember the details, but I
think he found a part-answer in using lots of PFPE grease to exclude water.
The stuff is often used on vehicles because it tends to stay put and not form
a grinding paste with all the grit that lands on it.

XLR's some in multi-pin forms, mayeb more reliable than multiple 6.5mm jacks,
but I suspect too expensive and bulky if you need a lot at once. I'd probably
use DB25 with adapter as first choice. Bit of heatshrink sleeving such as
used for DIY battery packs, to seal the adapter onto the plug. When the
adapter started to fail, rework the new adapter and new sleeving, rather than
have to do any resoldering. A kind of built-in disposability to save greater
work...

I've looked at DB15HD too, but they're so fiddly to solder I decided not to
do it again.