Inline Isolators for RFI reduction ?
 

Question to those who may have used one - Do inline isolators work
well on RX? Such as those sold by Radioworks?

Thanks,
Bruce Jensen

Inline Isolators for RFI reduction ?
 

On 01/16/2011 11:24 AM, bpnjensen wrote:
Question to those who may have used one - Do inline isolators work
well on RX? Such as those sold by Radioworks?

Thanks,
Bruce Jensen


That is complete overkill for receive only.

These are great folks. Whether you buy a half dozen or a pallet, they
treat you right.

http://www.minicircuits.com/cgi-bin/...rch_type=model

Inline Isolators for RFI reduction ?
 

On 1/16/2011 11:24 AM, bpnjensen wrote:
Question to those who may have used one - Do inline isolators work
well on RX? Such as those sold by Radioworks?

Thanks,
Bruce Jensen


Yes, amateurs have been rolling their own for a long time, most often
referred to as "traps" on an amateur antenna. Allows operation over
multiple bands when wire lengths are cut and tuned correctly ...

Regards,
JS

Inline Isolators for RFI reduction ?
 

On Jan 16, 11:24*am, bpnjensen wrote:
Question to those who may have used one - Do inline isolators work
well on RX? *Such as those sold by Radioworks?

Thanks,
Bruce Jensen

BpnJ : Why are you considering an Inline Isolator ?

1st and "Inline Isolator" requires inserting something
'in-the-line' in the Antenna to Radio Feed-in-Line.

2nd the "Inline Isolator" requires two more Connections
{Joints} in the Antenna to Radio Feed-in-Line.

*If* Your Antenna to Radio Feed-in-Line is less that
150 Feet : Then most likely you do not need an
"Inline Isolator".

*If* Your Antenna to Radio Feed-in-Line is on-the-ground
or buried-under-the-ground a few inches : Then most
likely you do not need an "Inline Isolator".

However : If your Antenna to Radio Feed-in-Line is
In-the-Air {Overhead} from Tree to House : Then may
be you could use and "Inline Isolator" at the House
entry-point with another Grounding Point/Ground Rod.

The "Correct Way" to Install a Longwire Antenna and Balun
by Wellbrook = http://www.wellbrook.uk.com/longwire.html
We have all most likely done it the wrong way more than once . . .
http://groups.google.com/group/rec.r...5cc467b35a70d5

Inline Isolators for RFI reduction ?
 

On Jan 16, 1:34*pm, RHF wrote:
On Jan 16, 11:24*am, bpnjensen wrote:

Question to those who may have used one - Do inline isolators work
well on RX? *Such as those sold by Radioworks?

Thanks,
Bruce Jensen

BpnJ : Why are you considering an Inline Isolator ?

1st and "Inline Isolator" requires inserting something
'in-the-line' in the Antenna to Radio Feed-in-Line.

2nd the "Inline Isolator" requires two more Connections
{Joints} in the Antenna to Radio Feed-in-Line.

*If* Your Antenna to Radio Feed-in-Line is less that
150 Feet : Then most likely you do not need an
"Inline Isolator".

*If* Your Antenna to Radio Feed-in-Line is on-the-ground
or buried-under-the-ground a few inches : Then most
likely you do not need an "Inline Isolator".

However : If your Antenna to Radio Feed-in-Line is
In-the-Air {Overhead} from Tree to House : Then may
be you could use and *"Inline Isolator" at the House
entry-point with another Grounding Point/Ground Rod.

The "Correct Way" to Install a Longwire Antenna and Balun
by Wellbrook =http://www.wellbrook.uk.com/longwire.html
We have all most likely done it the wrong way more than once . . .http://groups.google.com/group/rec.r...5cc467b35a70d5
*.
*.

Short answer - I am getting desperate over the noise level here.
Grasping at straws.

The fellow I spoke to who makes these things said they are best used
as close to the receiver input as possible.

Inline Isolators for RFI reduction ?
 

On Jan 16, 12:00*pm, dave wrote:
On 01/16/2011 11:24 AM, bpnjensen wrote:

Question to those who may have used one - Do inline isolators work
well on RX? *Such as those sold by Radioworks?

Thanks,
Bruce Jensen

That is complete overkill for receive only.

These are great folks. Whether you buy a half dozen or a pallet, they
treat you right.

http://www.minicircuits.com/cgi-bin/...1.18-3-X65%2B&....

Thanks, Dave, but I am afraid I don't even know what these devices are
or how they'd be used.

Inline Isolators for RFI reduction ?
 

On Jan 16, 1:34*pm, RHF wrote:
On Jan 16, 11:24*am, bpnjensen wrote:

Question to those who may have used one - Do inline isolators work
well on RX? *Such as those sold by Radioworks?

Thanks,
Bruce Jensen

BpnJ : Why are you considering an Inline Isolator ?

1st and "Inline Isolator" requires inserting something
'in-the-line' in the Antenna to Radio Feed-in-Line.

2nd the "Inline Isolator" requires two more Connections
{Joints} in the Antenna to Radio Feed-in-Line.

*If* Your Antenna to Radio Feed-in-Line is less that
150 Feet : Then most likely you do not need an
"Inline Isolator".

*If* Your Antenna to Radio Feed-in-Line is on-the-ground
or buried-under-the-ground a few inches : Then most
likely you do not need an "Inline Isolator".

However : If your Antenna to Radio Feed-in-Line is
In-the-Air {Overhead} from Tree to House : Then may
be you could use and *"Inline Isolator" at the House
entry-point with another Grounding Point/Ground Rod.

The "Correct Way" to Install a Longwire Antenna and Balun
by Wellbrook =http://www.wellbrook.uk.com/longwire.html
We have all most likely done it the wrong way more than once . . .http://groups.google.com/group/rec.r...5cc467b35a70d5
*.
*.

Thanks - I see the Wellbrook diagrams. Believe me, If I had the
space, that's how I'd do it. I have a tiny lot with the house plopped
right in the center, power lines fore and aft and neighbors by the
bushel within a hundred feet. My wire, by necessity, must go over my
rooftop. In all other respects, it is built roughly as you see in the
"good" diagram.

The isolator is a last resort.

Inline Isolators for RFI reduction ?
 

On 1/16/2011 5:08 PM, bpnjensen wrote:

...
Thanks, Dave, but I am afraid I don't even know what these devices are
or how they'd be used.

This might help:
http://www.iw5edi.com/ham-radio/?how...-traps-work,88

Regards,
JS

Inline Isolators for RFI reduction ?
 

On 01/16/2011 05:07 PM, bpnjensen wrote:
On Jan 16, 1:34 pm, wrote:
On Jan 16, 11:24 am, wrote:

Question to those who may have used one - Do inline isolators work
well on RX? Such as those sold by Radioworks?

Thanks,
Bruce Jensen

BpnJ : Why are you considering an Inline Isolator ?

1st and "Inline Isolator" requires inserting something
'in-the-line' in the Antenna to Radio Feed-in-Line.

2nd the "Inline Isolator" requires two more Connections
{Joints} in the Antenna to Radio Feed-in-Line.

*If* Your Antenna to Radio Feed-in-Line is less that
150 Feet : Then most likely you do not need an
"Inline Isolator".

*If* Your Antenna to Radio Feed-in-Line is on-the-ground
or buried-under-the-ground a few inches : Then most
likely you do not need an "Inline Isolator".

However : If your Antenna to Radio Feed-in-Line is
In-the-Air {Overhead} from Tree to House : Then may
be you could use and "Inline Isolator" at the House
entry-point with another Grounding Point/Ground Rod.

The "Correct Way" to Install a Longwire Antenna and Balun
by Wellbrook =http://www.wellbrook.uk.com/longwire.html
We have all most likely done it the wrong way more than once . . .http://groups.google.com/group/rec.r...5cc467b35a70d5
.
.

Short answer - I am getting desperate over the noise level here.
Grasping at straws.

The fellow I spoke to who makes these things said they are best used
as close to the receiver input as possible.

You gotta build a loop.

Inline Isolators for RFI reduction ?
 

On 01/16/2011 05:17 PM, John Smith wrote:
On 1/16/2011 5:08 PM, bpnjensen wrote:

...
Thanks, Dave, but I am afraid I don't even know what these devices are
or how they'd be used.

This might help:
http://www.iw5edi.com/ham-radio/?how...-traps-work,88

Regards,
JS

A tuned loop will give you a fighting chance. I think Ace's bud in
Chitown has one. Peter somebody...