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 <couperin@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 <yb0unc@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-bounces@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: couperin@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
>
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