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#1
January 16th 11, 07:24 PM
posted to rec.radio.shortwave
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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 |
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#2
January 16th 11, 08:00 PM
posted to rec.radio.shortwave
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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 |
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#3
January 16th 11, 08:06 PM
posted to rec.radio.shortwave
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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 |
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#4
January 16th 11, 09:34 PM
posted to rec.radio.shortwave
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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 |
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#5
January 17th 11, 01:07 AM
posted to rec.radio.shortwave
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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. |
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#6
January 17th 11, 01:08 AM
posted to rec.radio.shortwave
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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. |
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#7
January 17th 11, 01:14 AM
posted to rec.radio.shortwave
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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. |
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#8
January 17th 11, 01:17 AM
posted to rec.radio.shortwave
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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 |
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#9
January 17th 11, 01:45 AM
posted to rec.radio.shortwave
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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. |
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#10
January 17th 11, 01:53 AM
posted to rec.radio.shortwave
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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... |
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