From Newsgroup: alt.ham-radio.hf


I live in one of the worse places for a HAM... a trailer park.

But I have a project underway even now. An OCF dipole. From a couple of articles I read in an
Antenna book from ARRL, I decided on a multi-band dipole, Off center fed wire. The antenna isn't the
story here. It's the supporting structure at either end. I bought a dozen pieces of 1/2 inch conduit
and two octagonal electrical boxes and assorted conduit connectors plus a couple of pulleys nuts and
bolts. And one very expensive conduit bender (still cheaper than an electrician).

I'm hoping to build a pyramid at each end. An offset point to put the apex at the end of the
trailer. (btw it's 70' long) Picture a 4-sided pyramid 14 foot a side. (sides made with the
conduit) Slice this pyramid up the center and put the cut edge to the edge of the trailer.

A pulley to handle the antenna at each end, Oh the second article was about a dipole rolled up on
two spools and the author said that the ham would then be able to move the center off to one side if
desired. So with those two articles, the antenna was decided. Although the article said the antenna
would handle 40m 20m 10m with a 4:1 balun BUT with a 1:1 balun 15 meters would.

So the currant construction consideration is the balun. Has anyone EVER heard of a two value balun?
A switchable balun? My thinking goes like this, two baluns at the end of the ladder line, fed with
two coax lines and switched at/near the radio.

.. or just pick one and live with it.

Comments invited but realize I have already considered and reject moving. (-:

advTHANKSance
and Happy Holiday wishes to everyone!
73
KC8UGV
--- Synchronet 3.21b-Linux NewsLink 1.2

From Newsgroup: alt.ham-radio.hf

Just make sure the Ends of the Dipole are insulated
from Metal.
Stan

I live in one of the worse places for a HAM... a trailer park.

But I have a project underway even now. An OCF dipole. From a couple of articles I read in an
Antenna book from ARRL, I decided on a multi-band dipole, Off center fed wire. The antenna isn't the
story here. It's the supporting structure at either end. I bought a dozen pieces of 1/2 inch conduit
and two octagonal electrical boxes and assorted conduit connectors plus a couple of pulleys nuts and
bolts. And one very expensive conduit bender (still cheaper than an electrician).

I'm hoping to build a pyramid at each end. An offset point to put the apex at the end of the
trailer. (btw it's 70' long) Picture a 4-sided pyramid 14 foot a side. (sides made with the
conduit) Slice this pyramid up the center and put the cut edge to the edge of the trailer.

A pulley to handle the antenna at each end, Oh the second article was
about a dipole rolled up on
two spools and the author said that the ham would then be able to move the center off to one side if
desired. So with those two articles, the antenna was decided. Although the article said the antenna
would handle 40m 20m 10m with a 4:1 balun BUT with a 1:1 balun 15 meters would.

So the currant construction consideration is the balun. Has anyone EVER heard of a two value balun?
A switchable balun? My thinking goes like this, two baluns at the end of
the ladder line, fed with
two coax lines and switched at/near the radio.

.. or just pick one and live with it.

Comments invited but realize I have already considered and reject moving. (-:

advTHANKSance
and Happy Holiday wishes to everyone!
73
KC8UGV

--- Synchronet 3.21b-Linux NewsLink 1.2

From Newsgroup: alt.ham-radio.hf

Just make sure the Ends of the Dipole are insulated
from Metal.
Stan

I live in one of the worse places for a HAM... a trailer park.

But I have a project underway even now. An OCF dipole. From a couple of articles I read in an
Antenna book from ARRL, I decided on a multi-band dipole, Off center fed wire. The antenna isn't the
story here. It's the supporting structure at either end. I bought a dozen pieces of 1/2 inch conduit
and two octagonal electrical boxes and assorted conduit connectors plus a couple of pulleys nuts and
bolts. And one very expensive conduit bender (still cheaper than an electrician).

I'm hoping to build a pyramid at each end. An offset point to put the apex
at the end of the
trailer. (btw it's 70' long) Picture a 4-sided pyramid 14 foot a side. (sides made with the
conduit) Slice this pyramid up the center and put the cut edge to the edge
of the trailer.

A pulley to handle the antenna at each end, Oh the second article was
about a dipole rolled up on
two spools and the author said that the ham would then be able to move the center off to one side if
desired. So with those two articles, the antenna was decided. Although the article said the antenna
would handle 40m 20m 10m with a 4:1 balun BUT with a 1:1 balun 15 meters would.

So the currant construction consideration is the balun. Has anyone EVER
heard of a two value balun?
A switchable balun? My thinking goes like this, two baluns at the end of
the ladder line, fed with
two coax lines and switched at/near the radio.

.. or just pick one and live with it.

Comments invited but realize I have already considered and reject moving.
(-:

advTHANKSance
and Happy Holiday wishes to everyone!
73
KC8UGV

--- Synchronet 3.21b-Linux NewsLink 1.2

From Newsgroup: alt.ham-radio.hf

Just make sure the Ends of the Dipole are insulated
from Metal.
Stan

I live in one of the worse places for a HAM... a trailer park.

But I have a project underway even now. An OCF dipole. From a couple of articles I read in an
Antenna book from ARRL, I decided on a multi-band dipole, Off center fed wire. The antenna isn't the
story here. It's the supporting structure at either end. I bought a dozen pieces of 1/2 inch conduit
and two octagonal electrical boxes and assorted conduit connectors plus a couple of pulleys nuts and
bolts. And one very expensive conduit bender (still cheaper than an electrician).

I'm hoping to build a pyramid at each end. An offset point to put the apex
at the end of the
trailer. (btw it's 70' long) Picture a 4-sided pyramid 14 foot a side. (sides made with the
conduit) Slice this pyramid up the center and put the cut edge to the edge
of the trailer.

A pulley to handle the antenna at each end, Oh the second article was
about a dipole rolled up on
two spools and the author said that the ham would then be able to move the center off to one side if
desired. So with those two articles, the antenna was decided. Although the article said the antenna
would handle 40m 20m 10m with a 4:1 balun BUT with a 1:1 balun 15 meters would.

So the currant construction consideration is the balun. Has anyone EVER
heard of a two value balun?
A switchable balun? My thinking goes like this, two baluns at the end of
the ladder line, fed with
two coax lines and switched at/near the radio.

.. or just pick one and live with it.

Comments invited but realize I have already considered and reject moving.
(-:

advTHANKSance
and Happy Holiday wishes to everyone!
73
KC8UGV

--- Synchronet 3.21b-Linux NewsLink 1.2

From Newsgroup: alt.ham-radio.hf

On Wed, 7 Jan 2009 21:03:53 -0800, "Stanley Miln" <k6rmr@dslextreme.com> wrote:

Just make sure the Ends of the Dipole are insulated
from Metal.
Stan

The excess wire is rolled up on spools. Their made of plastic and I haven't decided exactly how to
connect the antenna (spools) to the towers but it'll prolly be rope.

BTW the towers will have plates on top and there will sit a mag mount 2m antenna. This is the real
scary part. Lightning. I intend to have 8 gauge copper cable from each high point running to ground
rods. I'll have to figure out how to bring in the coax. Right now the 2m lead just comes in thru
some smallish PVC near the roof. There's an elbow on the outside end for water protection. But I
doubt it'll have much to do with any stray bolts.

Looking forward to working the State QSO parties this year.
73
KC8UGV
--- Synchronet 3.21b-Linux NewsLink 1.2

From Newsgroup: alt.ham-radio.hf

WHAT ?
wire wraped on a spool is a coil ! an air coil ! and if the spool is metal...10db worse !

Trailer park...let me think, residents receive their tv over the air ?
You plan to transmit through a coil of transmission line ?

Its ok...you can send and receive morse code so now you are a ham !

Henry


"Native Terran" <finnigann2580@gmail.com> wrote in message news:t01dm4hn0gbkhimb5nllu9s8qo3klfkjmb@4ax.com...

On Wed, 7 Jan 2009 21:03:53 -0800, "Stanley Miln" <k6rmr@dslextreme.com> wrote:

Just make sure the Ends of the Dipole are insulated
from Metal.
Stan

The excess wire is rolled up on spools. Their made of plastic and I
haven't decided exactly how to
connect the antenna (spools) to the towers but it'll prolly be rope.

BTW the towers will have plates on top and there will sit a mag mount 2m antenna. This is the real
scary part. Lightning. I intend to have 8 gauge copper cable from each
high point running to ground
rods. I'll have to figure out how to bring in the coax. Right now the 2m lead just comes in thru
some smallish PVC near the roof. There's an elbow on the outside end for water protection. But I
doubt it'll have much to do with any stray bolts.

Looking forward to working the State QSO parties this year.
73
KC8UGV

--- Synchronet 3.21b-Linux NewsLink 1.2

From Newsgroup: alt.ham-radio.hf

On Sat, 17 Jan 2009 17:36:41 -0500, "Henry" <noone@nowhere.com> wrote:

WHAT ?
wire wraped on a spool is a coil ! an air coil ! and if the spool is >metal...10db worse !

In this case, it's a plastic spool.

Trailer park...let me think, residents receive their tv over the air ?
You plan to transmit through a coil of transmission line ?

Actually I have cable. Others have satellite dishes.... no TV antennas here. Perhaps residents other
trailer parks do have TV antennas, but not here. Does this make a difference to your reply?

Its ok...you can send and receive morse code so now you are a ham !

No I have not mastered this aspect of Amateur Radio. Nor digital TV for that matter none of the
digital modes yet. But how does this make any difference to my original question.

Henry

"Native Terran" <finnigann2580@gmail.com> wrote in message >news:t01dm4hn0gbkhimb5nllu9s8qo3klfkjmb@4ax.com...

On Wed, 7 Jan 2009 21:03:53 -0800, "Stanley Miln" <k6rmr@dslextreme.com>
wrote:

Just make sure the Ends of the Dipole are insulated
from Metal.
Stan

The excess wire is rolled up on spools. Their made of plastic and I
haven't decided exactly how to
connect the antenna (spools) to the towers but it'll prolly be rope.

BTW the towers will have plates on top and there will sit a mag mount 2m
antenna. This is the real
scary part. Lightning. I intend to have 8 gauge copper cable from each
high point running to ground
rods. I'll have to figure out how to bring in the coax. Right now the 2m
lead just comes in thru
some smallish PVC near the roof. There's an elbow on the outside end for
water protection. But I
doubt it'll have much to do with any stray bolts.

Looking forward to working the State QSO parties this year.
73
KC8UGV

73
KC8UGV
--- Synchronet 3.21b-Linux NewsLink 1.2