On Wed, 30 May 2012 09:08:04 +0200, "Szczepan Bialek"
wrote:

And neither are spacecraft antennas no matter what the type.

The Earth is in space and the spacecraft also.

The earth and spacecraft are floating around in a vacuum, same as
between your ears. I think you'll find it rather difficult to
demonstrate a conduction path through a vacuum for your grounded
antenna theory. Besides, if outer space did provide a conduction
path, it would also short out the antenna elements.

The same is with aircrafts and autos.

Aircraft and autos do not operate in outer space.

All transmitters and receivers are connected with the mass.

What mass of outer space? There is roughly 1 hydrogen atom per cubic
centimeter in outer space. That's not much mass and certainly not
enough to ionize and produce a conductive path.

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

"Jeff Liebermann" wrote in message
...
On Wed, 30 May 2012 09:08:04 +0200, "Szczepan Bialek"
wrote:

And neither are spacecraft antennas no matter what the type.


# Jeff

Why does anyone answer Skeezix Blutarsky?

On Wed, 30 May 2012 20:00:55 -0700, "Sal M. O'Nella"
wrote:

Why does anyone answer Skeezix Blutarsky?

Because I'm terrible at resisting temptation. If someone wants to
make themselves a target, it's far too tempting to take a few shots at
the target. Also, I enjoy reading (and writing) science fiction.
However, the real reason is that I haven't seen any decent antenna
related discussions in this newsgroup for a long time.


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

"Jeff Liebermann" wrote in message
...


snip

I enjoy reading (and writing) science fiction.
However, the real reason is that I haven't seen any decent antenna
related discussions in this newsgroup for a long time.


--
Jeff Liebermann

Well, with Field Day coming up, I had planned to use last year's 20m dipole
again, but I was on the phone with a guy last night and he dictated some
really easy-sounding plans for a two-element quad. It's supposed to be good
for 6 dB more gain than a dipole. Yes please, I'll take one free S-unit.
We're in the southwest corner of the country, so aiming it is a no-brainer.

Maybe I can post a diary of the build to amuse you nice folks by
demonstrating my (lack of) skill using hand tools. By the way, we'll be
using N3FJP's "Field Day Network Logger" this year, for the first time.
Last year, one of our guys used N3FJP single-station logger for himself
(400+ contacts) and he registered the network version for the club. I like
it. We've had several good trial runs. Find it at http://www.n3fjp.com/.

"Sal"
(KD6VKW)
Club President
Club FD Chairman,
Principal Elmer
Donation Sales Manager
(Jeez -- what am I _not_ doing?)

"Sal M. O'Nella" wrote in message
...

" Well, with Field Day coming up, I had planned to use last year's 20m
dipole again, but I was on the phone with a guy last night and he dictated
some really easy-sounding plans for a two-element quad. It's supposed to
be good for 6 dB more gain than a dipole. Yes please, I'll take one free
S-unit. We're in the southwest corner of the country, so aiming it is a
no-brainer.

Maybe I can post a diary of the build to amuse you nice folks by
demonstrating my (lack of) skill using hand tools. By the way, we'll be
using N3FJP's "Field Day Network Logger" this year, for the first time.
Last year, one of our guys used N3FJP single-station logger for himself
(400+ contacts) and he registered the network version for the club. I
like it. We've had several good trial runs. Find it at
http://www.n3fjp.com/.

"Sal" (KD6VKW) Club President Club FD Chairman, Principal Elmer
Donation Sales Manager (Jeez -- what am I _not_ doing?)

Hello courteous, dedicated and hard-working (over-worked) Sal.

After that write-up you may get a posting from a certain person telling you
to use a 19th century antenna rather than a modern one. So much better for
throwing those electrons into the aether :-)

I'd be delighted to read your diary. Your hard work will save my hands from
Bandaids and other first-aid treatments. I like to learn through other's
pain. Actually, a two-element quad might be a project for 2013 for me - not
sure if my yagi is still fit for work on 20m - 15m - 10m. Homebrew quads
used to be popular here in the UK some decades ago.

73, Ian.

On Thu, 31 May 2012 15:06:22 -0700, "Sal M. O'Nella"
wrote:

However, the real reason is that I haven't seen any decent antenna
related discussions in this newsgroup for a long time.
Jeff Liebermann

Well, with Field Day coming up, I had planned to use last year's 20m dipole
again, but I was on the phone with a guy last night and he dictated some
really easy-sounding plans for a two-element quad. It's supposed to be good
for 6 dB more gain than a dipole. Yes please, I'll take one free S-unit.
We're in the southwest corner of the country, so aiming it is a no-brainer.

Much better. Field Day is the prime incentive to do last minute
repairs on antennas and equipment. It's also a great place to do
testing that should have been performed before Field Day. Learn by
Destroying at its best. While fatalities and major injuries tend to
be minimal, I can't say the same for equipment and antenna failures.
Somehow, the miracle antenna contrived specifically for Field Day just
doesn't seem to tune or work as expected. Your "easy-sounding plans"
should be an ominous warning of problems to follow.

I'm staying out of Field Day this year. I had planned to deploy my
inflatable antenna design, but decided that doing R&D on top of a
mountain was not a good idea. I plan to visit, but not operate much.
I did my part this morning by customizing one of the Field Day
trailers with my cutting torch. Hopefully, I didn't weaken the
structure so that it will collapse on arrival to the site.

Maybe I can post a diary of the build to amuse you nice folks by
demonstrating my (lack of) skill using hand tools.

Any tool can be used as a hammer. That should be fun to read, and
more fun to watch the video.

By the way, we'll be
using N3FJP's "Field Day Network Logger" this year, for the first time.
Last year, one of our guys used N3FJP single-station logger for himself
(400+ contacts) and he registered the network version for the club. I like
it. We've had several good trial runs. Find it at http://www.n3fjp.com/.

We like to use N1MM, mostly because it's free, but also because it
took the last half dozen Field Days to train the operators in its use.
http://n1mm.hamdocs.com
We also gave up on running CAT5e all over the site because of the RFI
generated, but also because I got tired of dealing with trashed rolls
of CAT5e as everyone seem to enjoy walking on or tripping over the
CAT5 and coax cables. We tried 802.11g wi-fi, but found that high
power transmitters are really good at blocking the receiver front end
of the wireless cards. Since we don't run more than one station on a
band, there's no issue with dupes. So, no network needed.

(Jeez -- what am I _not_ doing?)

Operating?


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

"Jeff Liebermann" wrote in message
...


snip

Your "easy-sounding plans"
should be an ominous warning of problems to follow.


Sound warning, indeed. I checked some websites devoted to quads and the
measurements are in the ballpark. The 20m version is fairly close to the
ground,, being suspended from a boom at the top of a 30-foot pole. I'm
going to build it and try it in my yard before taking it to FD. The 30-foot
pole is no problem; I had three of them last year for the dipole.


(Jeez -- what am I _not_ doing?)

Operating?


Club duty only really requires about six hour a week, average. I still get
on the air. :-)

"Sal"

"Sal M. O'Nella" wrote in message
...

Why does anyone answer Skeezix Blutarsky?


Hello Sal.
Ah well, I guess that some of us like to try to be helpful. I'm hoping that
Szczepan might one day read some modern books on radio theory and practice.
Reminds me of when I had a relative who was unable to accept and understand
modern day life and technology. Tried to help but relative was incurable.

As someone else has said, we've had some good discussions about antenna
theory and practice.

Regards, Ian.

"Ian" wrote in message
...

Ah well, I guess that some of us like to try to be helpful. I'm hoping
that
Szczepan might one day read some modern books on radio theory and
practice.
Reminds me of when I had a relative who was unable to accept and
understand modern day life and technology. Tried to help but relative was
incurable.

Methinks this one is incurable, too.

73,
"Sal"
(KD6VKW)

On 5/31/2012 5:43 PM, Sal M. O'Nella wrote:
wrote in message
...

Ah well, I guess that some of us like to try to be helpful. I'm hoping
that
Szczepan might one day read some modern books on radio theory and
practice.
Reminds me of when I had a relative who was unable to accept and
understand modern day life and technology. Tried to help but relative was
incurable.

Methinks this one is incurable, too.

73,
"Sal"
(KD6VKW)



I bet he has an outhouse. Who needs modern plumbing when the negative
15th century stuff has worked so well for 25 centuries?

tom
K0TAR