question on random wire anttenas
 

having lost the support on my 6m beam and haing a turner able to tune a
random wire I have decided totry it

since i don't know I will like it id rather avoid cutting this nice
piece of wire

thinking about unwiding some wire from a 1/2 mile spool anythoungts on
howmuch and what happens if I don't cut it off the spool(just unwind
10ft fifty or whatever leaving one large inducer on the end of the
"antenna

question on random wire anttenas
 

"an old friend" wrote in news:1138059456.579317.228830
@o13g2000cwo.googlegroups.com:

having lost the support on my 6m beam and haing a turner able to tune a
random wire I have decided totry it

since i don't know I will like it id rather avoid cutting this nice
piece of wire

thinking about unwiding some wire from a 1/2 mile spool anythoungts on
howmuch and what happens if I don't cut it off the spool(just unwind
10ft fifty or whatever leaving one large inducer on the end of the
"antenna

The thing with random wires is that you get a voltage loop at the end and
then voltage loops every half wave back towards the feed end. At the
feed end you will have some random combination of reactance and
resistance to feed, which will tend to require a tuner. And you'll want
a counterpoise to ground it all. For that a quarter wave of wire will do
(or a half-wave attached to the tuner's ground post in the center).
Without a good counterpoise, your tuner and rig may get a bit hot RF-
wise.


--
Dave Oldridge+
ICQ 1800667

question on random wire anttenas
 

old friend,
As I understand your post, you have lost the use of your 6 meter beam
and you would like to try a random wire antenna. And as I understand
you say that you have a tuner which is capable of working with a random
wire.

I would say go ahead and try it. But you can't leave the extra length
of wire still wound on the spool. You'll have to make the sacrifice and
go ahead and clip off a 50 ft. length or so.

Random wire antennas are not very common on 6 meters, but there's no
reason it can't work.

I'm not sure what that inducer is that you intend to leave on one end.

John

question on random wire anttenas
 

Litzendraht wrote:
old friend,
As I understand your post, you have lost the use of your 6 meter beam
and you would like to try a random wire antenna. And as I understand
you say that you have a tuner which is capable of working with a random
wire.

I would say go ahead and try it. But you can't leave the extra length
of wire still wound on the spool. You'll have to make the sacrifice and
go ahead and clip off a 50 ft. length or so.

Random wire antennas are not very common on 6 meters, but there's no
reason it can't work.

I'm not sure what that inducer is that you intend to leave on one end.

the indcutor I was reffering wawould have been the spool of wire a or
or quater miles of wound wire surely would have a respectable
inductance

I would have rathe rleft it since the anttenna is most becuase I don't
try climbing over some raly icy surfaces is all

tahnk so advice

John

question on random wire anttenas
 

Until I put up a Diamond 4 element yagi I used a G5RV through a tuner for
about 2 months and worked 30+ grids with 10 watts from a Kenwood TS-660. I
couldn't believe it but when 6 is open you can work stations with anything
short of a well shielded dummy load.
73,
Ken

"an old friend" wrote in message
oups.com...
having lost the support on my 6m beam and haing a turner able to tune a
random wire I have decided totry it

since i don't know I will like it id rather avoid cutting this nice
piece of wire

thinking about unwiding some wire from a 1/2 mile spool anythoungts on
howmuch and what happens if I don't cut it off the spool(just unwind
10ft fifty or whatever leaving one large inducer on the end of the
"antenna

question on random wire anttenas
 

If you haven't cut it yet, don't.

Is it insulated wire or bare? If it is bare it is not important. Just get
the spool right up there at the end of the "antenna" part of the wire.

I'd just hook it up and try it. If it is insulated wire the supposed
loading coil on the end may very well be irrelevant. It won't be radiating
and, being at the end, it isn't loading anything significant.

I use my 40M invert Vee on 6M and work several states.

Steve, K9DCI



"an_old_friend" wrote in message
ups.com...

Litzendraht wrote:
old friend,
As I understand your post, you have lost the use of your 6 meter beam
and you would like to try a random wire antenna. And as I understand
you say that you have a tuner which is capable of working with a random
wire.

I would say go ahead and try it. But you can't leave the extra length
of wire still wound on the spool. You'll have to make the sacrifice and
go ahead and clip off a 50 ft. length or so.

Random wire antennas are not very common on 6 meters, but there's no
reason it can't work.

I'm not sure what that inducer is that you intend to leave on one end.

the indcutor I was reffering wawould have been the spool of wire a or
or quater miles of wound wire surely would have a respectable
inductance

I would have rathe rleft it since the anttenna is most becuase I don't
try climbing over some raly icy surfaces is all

tahnk so advice

John

question on random wire anttenas
 

Steve,

The reason I mentioned clipping a piece of wire off the reel is
that" old friend" mentioned in his initial post a half mile spool of
wire. And he was not specific as to wire size.

I was thinking maybe a wooden reel of # 12 or 14.

And yes, if it's small gauge wire on a little spool at the end, it
would act as a bit of end loading, which would have little effect.

But, ya gotta admit, old friend was not very descriptive.

John