Print Page - Signal black hole

Title: Signal black hole
Post by: gwilliums on March 13, 2013, 08:25:02 PM

I have been running sbs plotter for three weeks now and have found that to the north of me I have a wedge shape black hole where I do not get any hits.
This wedge is about 100miles north of my location near EGSS.
my antenna is on top of a two storey house and has an unobstructed view in that direction, unlike the view to the south which has to get past London and the range is limited in that direction.
Has anyone any idea or a guess as to what could be blocking the signals in my black hole?
regards.

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Title: Re: Signal black hole
Post by: Chris-G0WTZ on March 13, 2013, 08:56:07 PM

What antenna do you have?

Regards

Title: Re: Signal black hole
Post by: gwilliums on March 13, 2013, 09:05:26 PM

Mydel BS1105 on top of the chimney.

Title: Re: Signal black hole
Post by: Chris-G0WTZ on March 13, 2013, 09:55:50 PM

An impressive range
I suspect it is a hill or something causing it. (I assume you still have all 3 radials)

Regards

Title: Re: Signal black hole
Post by: gwilliums on March 14, 2013, 04:17:12 PM

yes I have checked and have 3 still and yes the range is very good with just stock Ariel, coax and sbs 1-er, from ml&s in oct 2010, I think i may move it to the other side of the house to see if there is any difference.
regards Gordon

Title: Re: Signal black hole
Post by: viking9 on March 14, 2013, 06:31:12 PM

Quote from: gwilliums on March 14, 2013, 04:17:12 PM
yes I have checked and have 3 still and yes the range is very good with just stock Ariel...

I find Fairy by far the best ;)

Tom

Title: Re: Signal black hole
Post by: gwilliums on March 14, 2013, 07:02:11 PM

Hi Tom, is fairy the make or model. can you give me details so I can take a look?
Regards Gordon.

Title: Re: Signal black hole
Post by: viking9 on March 14, 2013, 07:27:18 PM

The make is Fairy, the model is Ultra... makes washdays a breeze... ;D

Title: Re: Signal black hole
Post by: birdie on May 09, 2013, 05:29:24 AM

Quote from: gwilliums on March 13, 2013, 08:25:02 PM
I have been running sbs plotter for three weeks now and have found that to the north of me I have a wedge shape black hole where I do not get any hits.
This wedge is about 100miles north of my location near EGSS.

I thought you are using a AirNav RadarBox and got the Equatorial Black-hole.

Try looking for the obstruction by using Google-Earth.

Try rotate your antenna by 90 Degrees - to see if the black-hole move 90 Degree. If it remains, confirm an obstruction nearby.

Title: Re: Signal black hole
Post by: gwilliums on May 09, 2013, 10:14:23 PM

Thanks for all your replies esp. viking 9 ::)

as for your advise Birdie, I will be up a ladder on Saturday to give it a whirl, so to speak.

will let you know if there is any improvement.

Title: Re: Signal black hole
Post by: birdie on July 01, 2013, 06:26:59 AM

Has the hole disappear ?

Radarspotting

Miscellaneous => Other Topics => Screenshots => Topic started by: gwilliums on March 13, 2013, 08:25:02 PM