Radials for 6-BTV
 

In an above ground installation, Hustler recommends a minimum of 2
radials for each band. That's 12 wires, the equivalent of 6 dipoles.

Now, I'm wondering, why bother with the vertical section at all. If I
put a PVC pole up 25' (the height of the 6-BTV) and tie all the radial
pairs as inverted vees to one feed line at the top, wouldn't that work
as good. What effect would the feed line have on the radiation
pattern?

The dipoles would also serve as guy lines.

Maybe a balun on the top?

I have had inverted vees in the past and they seem to work great.

Ron, W1WBV

Indeed.

Sounds like a good experiment.

jw
K9RZZ

"rhymer" wrote in message
...

In an above ground installation, Hustler recommends a minimum of 2
radials for each band. That's 12 wires, the equivalent of 6 dipoles.



You're forgetting the take off angles. On 40 and 80 meters you'll
have a cloud warmer. Also, I'd think the odd-multiple relationships
(i.e. 40 meter radials working as a 3/4 wave on 15 meters)
could be exploited...

Pete

Ron,

An inverted V has a different radiation pattern than a vertical. Plus, the
multiple dipoles will interact with each other regarding adjustment.

I could discuss it further but since your email address is not valid, I didn't
want to spend the bandwidth here, hi. I guess deleting the "dot" might get the
right address but I'm a little pressed for time to play guessing games right
now, hi.

73s,

Evan

On 30 May 2004 01:14:52 GMT, (K9SQG) wrote:

Ron,

An inverted V has a different radiation pattern than a vertical. Plus, the
multiple dipoles will interact with each other regarding adjustment.

I could discuss it further but since your email address is not valid, I didn't
want to spend the bandwidth here, hi. I guess deleting the "dot" might get the
right address but I'm a little pressed for time to play guessing games right
now, hi.

73s,

Evan

Evan,

If I thought I would be getting Email response to this post, I would
have included a good address, sorry.

I have decided that I will do a little experimentation. I have a
tripod on the back dormer with a 2m ground plane that is only 5 feet
above the roof. I can use that for an easy access connection point and
run a few dipoles sloping down from there. I will start with 40, 30
and 15 and see what happens. If that works, I will add more bands.
Once I have the lengths worked out, I can raise the center point.

I would be interested in any idea you have on the subject.



Ron

When trimming multiple dipoles on one feedline, start with the lowest
frequency one first. It may take more than one iteration. Best if you can
run EZNEC on it first to get in the ballpark. My gut feeling is to not put
the wires for adjacent bands next to each other.

Tam/WB2TT
"rhymer" wrote in message
...
On 30 May 2004 01:14:52 GMT, (K9SQG) wrote:

Ron,

An inverted V has a different radiation pattern than a vertical. Plus,
the
multiple dipoles will interact with each other regarding adjustment.

I could discuss it further but since your email address is not valid, I
didn't
want to spend the bandwidth here, hi. I guess deleting the "dot" might
get the
right address but I'm a little pressed for time to play guessing games
right
now, hi.

73s,

Evan

Evan,

If I thought I would be getting Email response to this post, I would
have included a good address, sorry.

I have decided that I will do a little experimentation. I have a
tripod on the back dormer with a 2m ground plane that is only 5 feet
above the roof. I can use that for an easy access connection point and
run a few dipoles sloping down from there. I will start with 40, 30
and 15 and see what happens. If that works, I will add more bands.
Once I have the lengths worked out, I can raise the center point.

I would be interested in any idea you have on the subject.



Ron