I think I would try adding a capacitor first
Art

"vandmand" wrote in message
. ..

"John Passaneau" skrev i en meddelelse
...
Hi:
Do you have the loop horizontal or vertical? Horizontal mounting
requires
it
to be 20 feet (sorry can't do meter in my head) above ground. Your
balcony
most likely has steel structure holding it up and that is always ground.
Try
mounting it vertical if you have not already done so.


--


Hi

Thanks for you mail.

The loop is mounted vertically.

Yes, your are right. There is a lot of steel and aluminium in the
structure
of my balcony.

I have tried to replace the loop but it still "refuse" to tune below 21
MHz.

I can se a small dip on the meter but are not able tuned it manually.

From 21 MHz and above I get a very low SWR.

In the instruction manual it is mentioned if there is a high SWR due to
placement of the loop, the feed loop in the antenna can be tuned to get a
lower SWR.

I have not tried this solution yet due to the good SWR on higher band, but
perhaps I should.



Regards
OZ1JZV - John

On Fri, 09 Jul 2004 16:22:01 GMT, "aunwin"
wrote:
I think I would try adding a capacitor first
It has a capacitor.

I think I would try adding a capacitor first.

It has a capacitor.

What is to prevent him adding another. The more pF the merrier.

On Fri, 9 Jul 2004 16:59:33 +0000 (UTC), "Reg Edwards"
wrote:
I think I would try adding a capacitor first.
It has a capacitor.
What is to prevent him adding another. The more pF the merrier.

This is like charging the battery to fix a flat tire.

Unless what he wants to do is lower the frequency. It is, after all,
just a very leaky tank circuit with "no load". (That was "tongue in
cheek" for those of you that normally fail to recognize it)

tom
K0TAR

Richard Clark wrote:

On Fri, 9 Jul 2004 16:59:33 +0000 (UTC), "Reg Edwards"
wrote:

I think I would try adding a capacitor first.

It has a capacitor.

What is to prevent him adding another. The more pF the merrier.


This is like charging the battery to fix a flat tire.

On Fri, 09 Jul 2004 21:00:25 -0500, Tom Ring
wrote:
Unless what he wants to do is lower the frequency.

Hi Tom,

But that is NOT what he is trying to do. He simply wants it to work
"as advertised." Everyone is re-inventing it to do what it was
already designed to do. It already resonates at these frequencies, to
add capacitance is very poor advice for any of several reasons.

What John needs is to determine if it is broke, or if it is
environment that is getting in the way. He is not asking for the
antenna to tune outside of its characteristic range.

The advice in the handbook suggests he open up the case and squash the
feed loop to compensate for nearby interfering, metallic structures.
This may solve the problem, but it is a ****-poor solution. If it
were a general, preferrable condition, they would sell them all this
way.

73's
Richard Clark, KB7QHC

Well, how would you suggest he troubleshoot it?

I would drop some extra C in to determine if that's what's needed. What
is it going to hurt? Otherwise all he has left, from what you have
suggested, is to complain to the manufacturer.

At the least, he should determine what, if anything, makes a difference
before complaining.

tom
K0TAR

Richard Clark wrote:

On Fri, 09 Jul 2004 21:00:25 -0500, Tom Ring
wrote:

Unless what he wants to do is lower the frequency.


Hi Tom,

But that is NOT what he is trying to do. He simply wants it to work
"as advertised." Everyone is re-inventing it to do what it was
already designed to do. It already resonates at these frequencies, to
add capacitance is very poor advice for any of several reasons.

What John needs is to determine if it is broke, or if it is
environment that is getting in the way. He is not asking for the
antenna to tune outside of its characteristic range.

The advice in the handbook suggests he open up the case and squash the
feed loop to compensate for nearby interfering, metallic structures.
This may solve the problem, but it is a ****-poor solution. If it
were a general, preferrable condition, they would sell them all this
way.

73's
Richard Clark, KB7QHC

Since it normally requires more capacitance at that end of the band it was
my intent to make the capacitance larger. But it would appear that I am in
error and should be scolded , tho I hardly believe that it is inductance
should be added for it to present a purely resistive load, It will be
interesting to find out why.
Apologies for the incorrect suggestion
Art

"aunwin" wrote in message
news:JCzHc.49499$%_6.20861@attbi_s01...
I think I would try adding a capacitor first
Art

"vandmand" wrote in message
. ..

"John Passaneau" skrev i en meddelelse
...
Hi:
Do you have the loop horizontal or vertical? Horizontal mounting
requires
it
to be 20 feet (sorry can't do meter in my head) above ground. Your
balcony
most likely has steel structure holding it up and that is always
ground.
Try
mounting it vertical if you have not already done so.


--


Hi

Thanks for you mail.

The loop is mounted vertically.

Yes, your are right. There is a lot of steel and aluminium in the
structure
of my balcony.

I have tried to replace the loop but it still "refuse" to tune below 21
MHz.

I can se a small dip on the meter but are not able tuned it manually.

From 21 MHz and above I get a very low SWR.

In the instruction manual it is mentioned if there is a high SWR due to
placement of the loop, the feed loop in the antenna can be tuned to get
a
lower SWR.

I have not tried this solution yet due to the good SWR on higher band,
but
perhaps I should.



Regards
OZ1JZV - John