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 there....hi 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 +0000 > > > > > 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