Identify Old HF Vertical
 

I have an old HF Vertical that is about 20 feet tall when assembled.
The loading coil (?) seems to be open (VOM). I would like to dismantle
the assembly in hopes of salvaging as much as possible to do some
experiments with it.

It could also be a CB antenna, I don't recall where I got it...

The cover over the coil seems to be plastic, but much harder than PVC.
It also seems to be tight. The bottom of the assembly where the
connector is appears to be metal. The top of the coil assembly seems
to be sealed tightly. Unless some one has a more appealing idea I am
going to chuck it up in the lathe and start peeling the coil cover to
see what is inside.

The antenna top has a couple of wires bent in an egg-beater kind of
configuration.
Pictures at:
http://dixienc.us/Base%201.jpg
http://dixienc.us/Base%202.JPG
http://dixienc.us/Base%203.JPG
http://dixienc.us/Base%204.JPG
http://dixienc.us/Top%201.JPG
http://dixienc.us/Top%202.JPG


John Ferrell W8CCW
John Ferrell W8CCW

Identify Old HF Vertical
 

Doesn't appear to be any way to mount it on a mast/tower. Nor any signs
of being mounted. I guess I would see if the nut on the UHF connector
can be removed and the galvanized steel washer removed. That would let
you peer into the thing and see what is there. May not even be a coil
in there.

I am surprised you waited tis long to dismantle it!

Paul, KD7HB

Identify Old HF Vertical
 

Can't tell you the make or model, but am just about positive it is an old CB
antenna. My father-in-law had one just like it mounted on his roof for many
years out on the farm.

Sam - K7SAM

Identify Old HF Vertical
 

"John Ferrell" wrote in message
...
I have an old HF Vertical that is about 20 feet tall when assembled.
The loading coil (?) seems to be open (VOM). I would like to dismantle
the assembly in hopes of salvaging as much as possible to do some
experiments with it.

It could also be a CB antenna, I don't recall where I got it...

The cover over the coil seems to be plastic, but much harder than PVC.
It also seems to be tight. The bottom of the assembly where the
connector is appears to be metal. The top of the coil assembly seems
to be sealed tightly. Unless some one has a more appealing idea I am
going to chuck it up in the lathe and start peeling the coil cover to
see what is inside.

The antenna top has a couple of wires bent in an egg-beater kind of
configuration.

Yes, this was a CB ground plane design. There should have been a bracket
that attached at bottom (metal coax connector area) and at top of loading
coil.

The application of heat with a heat gun (NOT a torch or open flame) - should
allow the plastic composite to slip off the coil.

Greg

Identify Old HF Vertical
 

On 18 Dec 2005 16:01:35 -0800, "
wrote:

Doesn't appear to be any way to mount it on a mast/tower. Nor any signs
of being mounted. I guess I would see if the nut on the UHF connector
can be removed and the galvanized steel washer removed. That would let
you peer into the thing and see what is there. May not even be a coil
in there.

I am surprised you waited tis long to dismantle it!

Paul, KD7HB

It has a light but sturdy bracket that I have already removed. It is
pretty rusty but I believe i will clean up well.

I have a lot of projects around here that have been waiting a lot of
years. Some of them have found new homes.

John Ferrell W8CCW
John Ferrell W8CCW

Identify Old HF Vertical
 

On Sun, 18 Dec 2005 19:26:02 -0600, "gb"
wrote:

"John Ferrell" wrote in message
.. .
I have an old HF Vertical that is about 20 feet tall when assembled.
The loading coil (?) seems to be open (VOM). I would like to dismantle
the assembly in hopes of salvaging as much as possible to do some
experiments with it.

It could also be a CB antenna, I don't recall where I got it...

The cover over the coil seems to be plastic, but much harder than PVC.
It also seems to be tight. The bottom of the assembly where the
connector is appears to be metal. The top of the coil assembly seems
to be sealed tightly. Unless some one has a more appealing idea I am
going to chuck it up in the lathe and start peeling the coil cover to
see what is inside.

The antenna top has a couple of wires bent in an egg-beater kind of
configuration.

Yes, this was a CB ground plane design. There should have been a bracket
that attached at bottom (metal coax connector area) and at top of loading
coil.

The application of heat with a heat gun (NOT a torch or open flame) - should
allow the plastic composite to slip off the coil.

Greg

I am glad I asked! The heat gun sounds like a better way than the
lathe. I will try that first.

John Ferrell, W8CCW

John Ferrell W8CCW

Identify Old HF Vertical
 

Yes, this was a CB ground plane design. There should have been a bracket
that attached at bottom (metal coax connector area) and at top of loading
coil.

The application of heat with a heat gun (NOT a torch or open flame) - should
allow the plastic composite to slip off the coil.

Greg

I am glad I asked! The heat gun sounds like a better way than the
lathe. I will try that first.

John Ferrell, W8CCW

John Ferrell W8CCW
It came apart pretty easy. If you would like to see what was inside
click on http://dixienc.us/AntennaProject.htm
I am impressed with the mechanical structure and will try to imitate
it going back together.
John Ferrell W8CCW

Identify Old HF Vertical
 

What you have there is a Super Magnum CB antenna, vintage mid-60's.
The Magnum model had 4 foot radials and no top hat. The Super Magnum
has 9 foot radials with the top hat. By rewinding, or retapping the
coil, you can make a great 10 meter vertical. .... or it may be
simpler to change the length of the vertical section. I did the coil
thing in the mid-80's and used it to work all states and 130
countries.

LL


On Sun, 18 Dec 2005 22:24:47 GMT, John Ferrell
wrote:

I have an old HF Vertical that is about 20 feet tall when assembled.
The loading coil (?) seems to be open (VOM). I would like to dismantle
the assembly in hopes of salvaging as much as possible to do some
experiments with it.

It could also be a CB antenna, I don't recall where I got it...

The cover over the coil seems to be plastic, but much harder than PVC.
It also seems to be tight. The bottom of the assembly where the
connector is appears to be metal. The top of the coil assembly seems
to be sealed tightly. Unless some one has a more appealing idea I am
going to chuck it up in the lathe and start peeling the coil cover to
see what is inside.

The antenna top has a couple of wires bent in an egg-beater kind of
configuration.
Pictures at:
http://dixienc.us/Base%201.jpg
http://dixienc.us/Base%202.JPG
http://dixienc.us/Base%203.JPG
http://dixienc.us/Base%204.JPG
http://dixienc.us/Top%201.JPG
http://dixienc.us/Top%202.JPG


John Ferrell W8CCW
John Ferrell W8CCW

Identify Old HF Vertical
 

"John Ferrell" wrote in message
...

Yes, this was a CB ground plane design. There should have been a bracket
that attached at bottom (metal coax connector area) and at top of loading
coil.

The application of heat with a heat gun (NOT a torch or open flame) -
should
allow the plastic composite to slip off the coil.

Greg

I am glad I asked! The heat gun sounds like a better way than the
lathe. I will try that first.

John Ferrell, W8CCW

John Ferrell W8CCW
It came apart pretty easy. If you would like to see what was inside
click on http://dixienc.us/AntennaProject.htm
I am impressed with the mechanical structure and will try to imitate
it going back together.
John Ferrell W8CCW

John -

This antenna model is almost identical to one that my brother was given in
the 1970s. I see you used a torch (scorch marks)..... the corrosion can be
removed with naval jelly or an electrolysis process (described in
boatanchors newsgroup).

You should be able to wind a proper coil and have a 1/4 or 1/2 wave vertical
for 15 or 17 meters. You could use schedule 40 electrical conduit (gray
PVC) for new cover of coil.

w9gb

Identify Old HF Vertical
 

On Mon, 19 Dec 2005 20:39:38 -0600, "gb"
wrote:


John -

This antenna model is almost identical to one that my brother was given in
the 1970s. I see you used a torch (scorch marks)..... the corrosion can be
removed with naval jelly or an electrolysis process (described in
boatanchors newsgroup).

You should be able to wind a proper coil and have a 1/4 or 1/2 wave vertical
for 15 or 17 meters. You could use schedule 40 electrical conduit (gray
PVC) for new cover of coil.

w9gb

I used a paint stripper gun to loosen the PVC. After I discovered that
It would not be difficult to replace the sleeve I lost interest in
trying to save it.

On the next trip to town I will get some naval jelly for clean up. The
bracket hardware needs it as well.

My current plan for this project is to experiment with short 80 and
160 meter verticals. This is pretty early in the project, I have not
constructed the radial system yet.

The focus will be on matching methods, I feel the EZNEC software
answers most of my other questions.

This is an academic pursuit!

John Ferrell W8CCW

Identify Old HF Vertical
 

On Mon, 19 Dec 2005 16:59:58 -0500, LarryLurker
wrote:

What you have there is a Super Magnum CB antenna, vintage mid-60's.
The Magnum model had 4 foot radials and no top hat. The Super Magnum
has 9 foot radials with the top hat. By rewinding, or retapping the
coil, you can make a great 10 meter vertical. .... or it may be
simpler to change the length of the vertical section. I did the coil
thing in the mid-80's and used it to work all states and 130
countries.

LL

That is a pretty impressive testimony!

John Ferrell W8CCW