HOME | SKY PRODUCTS | SKY CARDS | SKY PACKS | SKY CHANNELS | SKY FREESAT | ASTRA SATELLITE GROUP | SIGNAL LOSS | UK VPN
ABU DHABI SPORTS | UK BROADBAND TV | BROADBAND INTERNET via SATELLITE | CONTACT | IBIZA INSTALLATIONS | BRITISH TELECOM - IBIZA

Night Dimming & Signal Strengths

Unfortunately as satellite TV viewers here in Spain we are subject to the annoying phenomenon of Night Dimming. This is the technical term given to the drop in signal strengths in the late evening, normally around 9pm, which is manifested by a noticeable reduction in picture quality on weak channels like BBC1 and ITV1, resulting in break-up and pixilation or even total loss of the picture altogether.

It normally lasts just over an hour before returning to normal and is a problem that is experienced more on the 1.8M dishes rather than the 2.4M dishes, the larger dishes by virtue of their greater size being able to cope with the drop in signal a lot better than their smaller counterparts.

The reason is that at this time of night the satellites in the Astra 2 group start to move into the outside edge of the earth's shadow known as the Penumbra and as they do the output of the satellites is slightly reduced ( only really noticeable on Astra 2D, hence the break up of BBC and ITV channels).

As the solar panels that give the satellites power during the day are now not receiving any light from the Sun the satellites switch onto their back-up batteries to maintain the satellite signal. When the batteries are fired up the signal returns to normal (in fact higher than normal on 2D). This tiny drop in power is enough to cause signal loss in fringe areas.



Back To Top

This website is hosted by AN Hosting for less than 5.00 per month



Sign up for PayPal and start accepting credit card payments instantly.
Ibiza