Well, I went from 10 wraps, to about 40 wraps (of the same 22 gauge
insulated wire), directly around the antenna. I extended the bottom
(thick) part of the antenna, just enough to fit the wraps (-the wraps
are NOT spaced out). I then attached antenna and ground wires of the
loop to the ends of the wire wrapped around the antenna.

Well, off of the rod by itself, I can hear CHU Canada, but it's below 1
on the S-Meter. Using the inductive connection (40 wraps), it gives a
signal of 4 -- but it's VERY noisy.
(I tried reversing the antenna/ground to no avail).

With the antenna clip directly to the top (thin part) of the rod
antenna (rest of rod not extended), I get signal of 6 but very noisy.
When I connect the ground clip to the battery, it get's MUCH quieter
(than without ground, or with inductive connection) and it stays at a
signal of 6. Direct connection of the antenna to a radio with an
antenna jack is still much better!
(I did a test with the clips to that radio - in order to make sure it's
an antenna connection issue).

So, as of now, the inductive connection isn't helping. Suggestions or
recommendations?

I emailed Universal about the AA-1, to ask if it's ok to use with
active antennas (it's also $60...which is a bit much, considering).

Thanks

RHF wrote:
wrote:
Thanks.

I was asking if the tubing made a difference, so that I could TEST
using insulated wire directly on the antenna... and then get some
tubing once I see that the wrapping works and how many wraps are
needed.

1 - If you Wrap the Insulated Wire Directly on-to the
Whip Antenna : Then you have a Fixed {Permenant}
Installation on the one Radio.

DANR - Yes - The Tubing will make a difference.

Since the Insulated Wire will be closer to the Metal
of the Whip Antenna and therefore coupling to it more
effectively. You will find that few turns are required
with the Direct-Wrap. More Turns when the Tubing is
used 'in-between' the Wire and the Whip Antenna.

TIP # 1 - Instead of Tubing for your first attempt. Try a
few wraps of Paper taped around the Whip Antenna as
a Thin Core to make the Coupling Coil more easier to
Put-On or Take-Off as needed.

TIP # 2 - With the Tubing the Coil Assembly can be
positioned {move} In-and-Out on the Whip Antenna
so that the Coupling Effect between the Whip and
Coil can be varried {adjusted} for the best reception.

hope this helps - iane ~ RHF
.
.
. .

wrote:
Well, I went from 10 wraps, to about 40 wraps (of the same 22 gauge
insulated wire), directly around the antenna. I extended the bottom
(thick) part of the antenna, just enough to fit the wraps (-the wraps
are NOT spaced out). I then attached antenna and ground wires of the
loop to the ends of the wire wrapped around the antenna.

Well, off of the rod by itself, I can hear CHU Canada, but it's below 1
on the S-Meter. Using the inductive connection (40 wraps), it gives a
signal of 4 -- but it's VERY noisy.
(I tried reversing the antenna/ground to no avail).

With the antenna clip directly to the top (thin part) of the rod
antenna (rest of rod not extended), I get signal of 6 but very noisy.
When I connect the ground clip to the battery, it get's MUCH quieter
(than without ground, or with inductive connection) and it stays at a
signal of 6. Direct connection of the antenna to a radio with an
antenna jack is still much better!
(I did a test with the clips to that radio - in order to make sure it's
an antenna connection issue).

So, as of now, the inductive connection isn't helping. Suggestions or
recommendations?

I emailed Universal about the AA-1, to ask if it's ok to use with
active antennas (it's also $60...which is a bit much, considering).

Thanks

RHF wrote:
wrote:
Thanks.

I was asking if the tubing made a difference, so that I could TEST
using insulated wire directly on the antenna... and then get some
tubing once I see that the wrapping works and how many wraps are
needed.

1 - If you Wrap the Insulated Wire Directly on-to the
Whip Antenna : Then you have a Fixed {Permenant}
Installation on the one Radio.

DANR - Yes - The Tubing will make a difference.

Since the Insulated Wire will be closer to the Metal
of the Whip Antenna and therefore coupling to it more
effectively. You will find that few turns are required
with the Direct-Wrap. More Turns when the Tubing is
used 'in-between' the Wire and the Whip Antenna.

TIP # 1 - Instead of Tubing for your first attempt. Try a
few wraps of Paper taped around the Whip Antenna as
a Thin Core to make the Coupling Coil more easier to
Put-On or Take-Off as needed.

TIP # 2 - With the Tubing the Coil Assembly can be
positioned {move} In-and-Out on the Whip Antenna
so that the Coupling Effect between the Whip and
Coil can be varried {adjusted} for the best reception.

hope this helps - iane ~ RHF
.
.
. .

DANR,

Seems like you have tried all the various combinations
and described your results fairly well.

Remember - Not everything words for everyboby.

Choose the one that works for you the best and stick with it.
- - - Until you try something better )

If increased 'noise' coming from the simple straight wire
Antenna is an issue. Then try a Horizontal [Flat] Loop
Antenna with either TV Twin Lead or Coax Cable as a
feed-in-line from the Antenna to the Radio.

READ - The Shortwave Listener's (SWL) "Random"
Horizontal [Flat] Loop Antenna
http://groups.google.com/group/rec.r...73213a11be0b83


READ - The In-the-Attic Horizontal [Flat] Loop Antenna
- - - Just may be the better choice to fill that . . .
empty space overhead {not in your head }.
http://groups.google.com/group/rec.r...f4e10e7df8249c

http://groups.google.com/group/rec.r...78920c10cb5cc9


Note - A simple Loop Antenna {Square / Triangle / Round}
with a 10 - 15 Foot Side or Diameter is really about a
40'-60' / 30'-45' / 31'-47' long piece of Wire; and that
is enough Wire-in-the-Air for most 'portable' AM/FM
Shortwave Radios.

something to think about - iane ~ RHF

In article . com,
wrote:

RHF wrote:
wrote:
Thanks.

I was asking if the tubing made a difference, so that I could
TEST using insulated wire directly on the antenna... and then get
some tubing once I see that the wrapping works and how many wraps
are needed.

1 - If you Wrap the Insulated Wire Directly on-to the Whip
Antenna : Then you have a Fixed {Permenant} Installation on the
one Radio.

DANR - Yes - The Tubing will make a difference.

Since the Insulated Wire will be closer to the Metal of the Whip
Antenna and therefore coupling to it more effectively. You will
find that few turns are required with the Direct-Wrap. More Turns
when the Tubing is used 'in-between' the Wire and the Whip Antenna.

TIP # 1 - Instead of Tubing for your first attempt. Try a few wraps
of Paper taped around the Whip Antenna as a Thin Core to make the
Coupling Coil more easier to Put-On or Take-Off as needed.

TIP # 2 - With the Tubing the Coil Assembly can be positioned
{move} In-and-Out on the Whip Antenna so that the Coupling Effect
between the Whip and Coil can be varried {adjusted} for the best
reception.

Well, I went from 10 wraps, to about 40 wraps (of the same 22 gauge
insulated wire), directly around the antenna. I extended the bottom
(thick) part of the antenna, just enough to fit the wraps (-the wraps
are NOT spaced out). I then attached antenna and ground wires of the
loop to the ends of the wire wrapped around the antenna.

Well, off of the rod by itself, I can hear CHU Canada, but it's below
1 on the S-Meter. Using the inductive connection (40 wraps), it gives
a signal of 4 -- but it's VERY noisy. (I tried reversing the
antenna/ground to no avail).

With the antenna clip directly to the top (thin part) of the rod
antenna (rest of rod not extended), I get signal of 6 but very noisy.
When I connect the ground clip to the battery, it get's MUCH quieter
(than without ground, or with inductive connection) and it stays at a
signal of 6. Direct connection of the antenna to a radio with an
antenna jack is still much better! (I did a test with the clips to
that radio - in order to make sure it's an antenna connection issue).

So, as of now, the inductive connection isn't helping. Suggestions or
recommendations?

I emailed Universal about the AA-1, to ask if it's ok to use with
active antennas (it's also $60...which is a bit much, considering).

The radio input is a differential mode input. This means it see a signal
relative to its internal ground. Most local noise is common mode so an
antenna setup that picks it up and presents it to the radio input causes
the radio to respond to it without a ground connection. Connecting an
antenna to just the antenna terminal causes any received station by the
antenna to look the same as any local noise it also picks up since both
are presented to the radio as a signal to ground. Connecting an antenna
to the radio antenna terminal and ground causes the received station to
appear differentially across the radio input so the radio responds to it
and the common mode locally picked up noise is the same on the antenna
and ground terminal so it is rejected as a common mode signal.

--
Telamon
Ventura, California

Telamon wrote:
In article . com,
wrote:

RHF wrote:
wrote:
Thanks.

I was asking if the tubing made a difference, so that I could
TEST using insulated wire directly on the antenna... and then get
some tubing once I see that the wrapping works and how many wraps
are needed.

1 - If you Wrap the Insulated Wire Directly on-to the Whip
Antenna : Then you have a Fixed {Permenant} Installation on the
one Radio.

DANR - Yes - The Tubing will make a difference.

Since the Insulated Wire will be closer to the Metal of the Whip
Antenna and therefore coupling to it more effectively. You will
find that few turns are required with the Direct-Wrap. More Turns
when the Tubing is used 'in-between' the Wire and the Whip Antenna.

TIP # 1 - Instead of Tubing for your first attempt. Try a few wraps
of Paper taped around the Whip Antenna as a Thin Core to make the
Coupling Coil more easier to Put-On or Take-Off as needed.

TIP # 2 - With the Tubing the Coil Assembly can be positioned
{move} In-and-Out on the Whip Antenna so that the Coupling Effect
between the Whip and Coil can be varried {adjusted} for the best
reception.

Well, I went from 10 wraps, to about 40 wraps (of the same 22 gauge
insulated wire), directly around the antenna. I extended the bottom
(thick) part of the antenna, just enough to fit the wraps (-the wraps
are NOT spaced out). I then attached antenna and ground wires of the
loop to the ends of the wire wrapped around the antenna.

Well, off of the rod by itself, I can hear CHU Canada, but it's below
1 on the S-Meter. Using the inductive connection (40 wraps), it gives
a signal of 4 -- but it's VERY noisy. (I tried reversing the
antenna/ground to no avail).

With the antenna clip directly to the top (thin part) of the rod
antenna (rest of rod not extended), I get signal of 6 but very noisy.
When I connect the ground clip to the battery, it get's MUCH quieter
(than without ground, or with inductive connection) and it stays at a
signal of 6. Direct connection of the antenna to a radio with an
antenna jack is still much better! (I did a test with the clips to
that radio - in order to make sure it's an antenna connection issue).

So, as of now, the inductive connection isn't helping. Suggestions or
recommendations?

I emailed Universal about the AA-1, to ask if it's ok to use with
active antennas (it's also $60...which is a bit much, considering).


- The radio input is a differential mode input. This means
- it see a signal relative to its internal ground.

- Most local noise is common mode so an antenna setup
- that picks it up and presents it to the radio input causes
- the radio to respond to it without a ground connection.

- Connecting an antenna to just the antenna terminal causes
- any received station by the antenna to look the same as any
- local noise it also picks up since both are presented to the
- radio as a signal to ground.

- Connecting an antenna to the radio antenna terminal and
- ground causes the received station to appear differentially
- across the radio input so the radio responds to it and the
- common mode locally picked up noise is the same on the
- antenna and ground terminal so it is rejected as a common
- mode signal.
-
- --
- Telamon
Ventura, California

El Telo Mundo - Translation Please ! ~ RHF

Is simply connecting an Antenna to the Radio's Whip
Antenna or Antenna Terminal :
- - - Good -or- Band for Reception ?

Is simply connecting a Ground to the Radio :
- - - Good -or- Band for Reception ?

Will doing both make Radio Listening Beter : Yes -or- No ?

In article .com,
"RHF" wrote:

Telamon wrote:
In article . com,
wrote:

RHF wrote:
wrote:
Thanks.

I was asking if the tubing made a difference, so that I could
TEST using insulated wire directly on the antenna... and then get
some tubing once I see that the wrapping works and how many wraps
are needed.

1 - If you Wrap the Insulated Wire Directly on-to the Whip
Antenna : Then you have a Fixed {Permenant} Installation on the
one Radio.

DANR - Yes - The Tubing will make a difference.

Since the Insulated Wire will be closer to the Metal of the Whip
Antenna and therefore coupling to it more effectively. You will
find that few turns are required with the Direct-Wrap. More Turns
when the Tubing is used 'in-between' the Wire and the Whip Antenna.

TIP # 1 - Instead of Tubing for your first attempt. Try a few wraps
of Paper taped around the Whip Antenna as a Thin Core to make the
Coupling Coil more easier to Put-On or Take-Off as needed.

TIP # 2 - With the Tubing the Coil Assembly can be positioned
{move} In-and-Out on the Whip Antenna so that the Coupling Effect
between the Whip and Coil can be varried {adjusted} for the best
reception.

Well, I went from 10 wraps, to about 40 wraps (of the same 22 gauge
insulated wire), directly around the antenna. I extended the bottom
(thick) part of the antenna, just enough to fit the wraps (-the wraps
are NOT spaced out). I then attached antenna and ground wires of the
loop to the ends of the wire wrapped around the antenna.

Well, off of the rod by itself, I can hear CHU Canada, but it's below
1 on the S-Meter. Using the inductive connection (40 wraps), it gives
a signal of 4 -- but it's VERY noisy. (I tried reversing the
antenna/ground to no avail).

With the antenna clip directly to the top (thin part) of the rod
antenna (rest of rod not extended), I get signal of 6 but very noisy.
When I connect the ground clip to the battery, it get's MUCH quieter
(than without ground, or with inductive connection) and it stays at a
signal of 6. Direct connection of the antenna to a radio with an
antenna jack is still much better! (I did a test with the clips to
that radio - in order to make sure it's an antenna connection issue).

So, as of now, the inductive connection isn't helping. Suggestions or
recommendations?

I emailed Universal about the AA-1, to ask if it's ok to use with
active antennas (it's also $60...which is a bit much, considering).


- The radio input is a differential mode input. This means
- it see a signal relative to its internal ground.

- Most local noise is common mode so an antenna setup
- that picks it up and presents it to the radio input causes
- the radio to respond to it without a ground connection.

- Connecting an antenna to just the antenna terminal causes
- any received station by the antenna to look the same as any
- local noise it also picks up since both are presented to the
- radio as a signal to ground.

- Connecting an antenna to the radio antenna terminal and
- ground causes the received station to appear differentially
- across the radio input so the radio responds to it and the
- common mode locally picked up noise is the same on the
- antenna and ground terminal so it is rejected as a common
- mode signal.
-
- --
- Telamon
Ventura, California

El Telo Mundo - Translation Please ! ~ RHF

Is simply connecting an Antenna to the Radio's Whip
Antenna or Antenna Terminal :
- - - Good -or- Band for Reception ?

Is simply connecting a Ground to the Radio :
- - - Good -or- Band for Reception ?

Will doing both make Radio Listening Beter : Yes -or- No ?

You are confused by the terms differential and common mode?

Common mode means that you have the same voltage or signal on both
antenna and ground. Imagine a sine wave time varying voltage in phase
on the antenna and ground lead. Even though it is varying since it is
the same signal on both terminals it will not induce a current through
the radio input because there is no potential difference between the
terminals but if the signal was only on one terminal (antenna) then
there would be a potential difference and current will flow through the
radio input.

Consider a dipole antenna with one leg connected to the antenna and the
other leg connected to the ground terminal. A local noise field will
cause the same time varying voltage to be generated by both legs of the
dipole and then the radio terminals so that the radio does not respond
to it. However, a distant station will cause a time varying voltage 180
degrees out of phase to be generated and when that time varying
potential difference appears at the radio terminals that will cause a
current to flow from the antenna terminal to ground terminal.

The result of using a balanced antenna helps the radio reject local
noise while responding to the distant radio signal in this way. If we
were discussing amplifiers we would call it common mode rejection.

--
Telamon
Ventura, California