Re: Topband: Best wire antenna for roof top location.
Halo John, 9V1VV Thanks for your experience shared re-the topband operation Same story on what has happened so far with my inv.V antenna on 160m at my office and QTH. Just would like to hear every suggestion in detail from all the topband guru's here and...try another experience on the roof top of a hi-rise building...do hope I got lucky and could get better S/N therehi hi Best 73, Nuradi, YB0UNC / KU2B -Original Message- From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of John Davies Sent: Friday, August 14, 2015 6:58 AM To: topband@contesting.com Subject: Topband: Best wire antenna for roof top location. From: coupe...@hotmail.com To: topband@contesting.com Subject: Re: Best wire antenna for roof top location. Date: Thu, 13 Aug 2015 23:55:30 + 9V operations are similar to Jakarta, with huge noise problems in an urban environment. Over the past 15 years there have only been three or four 9V ops on 160. The most successful was Bob 9V1GO who claimed 100 DXCC entities over a few seasons. However, these were internet assisted. He tried everything and eventually ended up with a long wire sloper from his high rise apartment down to ground level, using the building water pipes as a counterpoise. His efforts took hundreds or even thousands of hours to achieve. Another was Pete 9V1PC (SK) who tried an inverted L from a high-rise, with the top section 30 feet above the roof and the vertical section sloping a bit down to the ground. Noise killed him. He tried a 1/4 wave vertical from the roof on a helium balloon but his neighbours threatened to report him to the police, so he gave up after a few nights. Using 1KW he got out fine but could only hear S9 noise. He got many angry emails from ops around the world because he could not hear them. I was on a few years ago using a full length dipole above the roof, far too low of course, but with 500 Watts it got out OK. Noise again was the problem. I worked 40 DXCC entities but after many nights of listening to static I gave up. Life is too short. All of us have tried separate small loop receive antennas, both passive and active, with only marginal improvements. Noise cancelling antennas don't work due to the myriad of noise sources in built-up areas. Short Beverages are a waste of time as well. Bottom line is it is hardly worth bothering. After you have worked the few big guns in EU and the JAs, Aussies and Russians on top band there is a quantum leap to the rest of the world, all due to noise. John 9V1VV _ Topband Reflector Archives - http://www.contesting.com/_topband _ Topband Reflector Archives - http://www.contesting.com/_topband
Re: Topband: Best wire antenna for roof top location.
Has anyone tried merely dropping a lightweight wire over the side of the building as a receive-only antenna? That might get it away from the plane of interference from the equipment at the top. On Fri, Aug 14, 2015 at 11:26 PM, John Davies coupe...@hotmail.com wrote: Hello Nuradi. Please don't let my post discourage your efforts. There is a lot of satisfaction gained in trying out different ideas. You may have more success than we had. 73 John Sent from my Mi phone On Aug 15, 2015 6:23 AM, Nuradi yb0...@gmail.com wrote:br type=attributi Halo John, 9V1VV Thanks for your experience shared re-the topband operation Same story on what has happened so far with my inv.V antenna on 160m at my office and QTH. Just would like to hear every suggestion in detail from all the topband guru's here and...try another experience on the roof top of a hi-rise building...do hope I got lucky and could get better S/N therehi hi Best 73, Nuradi, YB0UNC / KU2B -Original Message- From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of John Davies Sent: Friday, August 14, 2015 6:58 AM To: topband@contesting.com Subject: Topband: Best wire antenna for roof top location. From: coupe...@hotmail.com To: topband@contesting.com Subject: Re: Best wire antenna for roof top location. Date: Thu, 13 Aug 2015 23:55:30 + 9V operations are similar to Jakarta, with huge noise problems in an urban environment. Over the past 15 years there have only been three or four 9V ops on 160. The most successful was Bob 9V1GO who claimed 100 DXCC entities over a few seasons. However, these were internet assisted. He tried everything and eventually ended up with a long wire sloper from his high rise apartment down to ground level, using the building water pipes as a counterpoise. His efforts took hundreds or even thousands of hours to achieve. Another was Pete 9V1PC (SK) who tried an inverted L from a high-rise, with the top section 30 feet above the roof and the vertical section sloping a bit down to the ground. Noise killed him. He tried a 1/4 wave vertical from the roof on a helium balloon but his neighbours threatened to report him to the police, so he gave up after a few nights. Using 1KW he got out fine but could only hear S9 noise. He got many angry emails from ops around the world because he could not hear them. I was on a few years ago using a full length dipole above the roof, far too low of course, but with 500 Watts it got out OK. Noise again was the problem. I worked 40 DXCC entities but after many nights of listening to static I gave up. Life is too short. All of us have tried separate small loop receive antennas, both passive and active, with only marginal improvements. Noise cancelling antennas don't work due to the myriad of noise sources in built-up areas. Short Beverages are a waste of time as well. Bottom line is it is hardly worth bothering. After you have worked the few big guns in EU and the JAs, Aussies and Russians on top band there is a quantum leap to the rest of the world, all due to noise. John 9V1VV _ Topband Reflector Archives - http://www.contesting.com/_topband _ Topband Reflector Archives - http://www.contesting.com/_topband _ Topband Reflector Archives - http://www.contesting.com/_topband
Re: Topband: Topband Digest, Vol 152, Issue 13
Bottom line is it is hardly worth bothering. After you have worked the few big guns in EU and the JAs, Aussies and Russians on top band there is a quantum leap to the rest of the world, all due to noise. John 9V1VV How is the noise at St John's? Would it be practical to set up there for a contest or holiday DXing? _ Topband Reflector Archives - http://www.contesting.com/_topband
Re: Topband: Best wire antenna for roof top location.
Hello Nuradi. Please don't let my post discourage your efforts. There is a lot of satisfaction gained in trying out different ideas. You may have more success than we had. 73 John Sent from my Mi phone On Aug 15, 2015 6:23 AM, Nuradi yb0...@gmail.com wrote:br type=attributi Halo John, 9V1VV Thanks for your experience shared re-the topband operation Same story on what has happened so far with my inv.V antenna on 160m at my office and QTH. Just would like to hear every suggestion in detail from all the topband guru's here and...try another experience on the roof top of a hi-rise building...do hope I got lucky and could get better S/N therehi hi Best 73, Nuradi, YB0UNC / KU2B -Original Message- From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of John Davies Sent: Friday, August 14, 2015 6:58 AM To: topband@contesting.com Subject: Topband: Best wire antenna for roof top location. From: coupe...@hotmail.com To: topband@contesting.com Subject: Re: Best wire antenna for roof top location. Date: Thu, 13 Aug 2015 23:55:30 + 9V operations are similar to Jakarta, with huge noise problems in an urban environment. Over the past 15 years there have only been three or four 9V ops on 160. The most successful was Bob 9V1GO who claimed 100 DXCC entities over a few seasons. However, these were internet assisted. He tried everything and eventually ended up with a long wire sloper from his high rise apartment down to ground level, using the building water pipes as a counterpoise. His efforts took hundreds or even thousands of hours to achieve. Another was Pete 9V1PC (SK) who tried an inverted L from a high-rise, with the top section 30 feet above the roof and the vertical section sloping a bit down to the ground. Noise killed him. He tried a 1/4 wave vertical from the roof on a helium balloon but his neighbours threatened to report him to the police, so he gave up after a few nights. Using 1KW he got out fine but could only hear S9 noise. He got many angry emails from ops around the world because he could not hear them. I was on a few years ago using a full length dipole above the roof, far too low of course, but with 500 Watts it got out OK. Noise again was the problem. I worked 40 DXCC entities but after many nights of listening to static I gave up. Life is too short. All of us have tried separate small loop receive antennas, both passive and active, with only marginal improvements. Noise cancelling antennas don't work due to the myriad of noise sources in built-up areas. Short Beverages are a waste of time as well. Bottom line is it is hardly worth bothering. After you have worked the few big guns in EU and the JAs, Aussies and Russians on top band there is a quantum leap to the rest of the world, all due to noise. John 9V1VV _ Topband Reflector Archives - http://www.contesting.com/_topband _ Topband Reflector Archives - http://www.contesting.com/_topband
