TV recpetion - analogue

In message , Terry D wrote

With analogue each of the channels are on a different frequency. Obstructions within the room can affect these frequencies in different ways. If you have any electronic equipment operating close to the aerial the interference can swamp the signal you want.

Indoor aerials are not usual regarded as a reliable means of collecting your TV signals :)

For example, interference from dodgy lightbulbs.

In article , Terry D scribeth thus

Simple.. Their on different frequencies and chances are that what is known as multipath is happening this is where some signals take different paths to get to the aerial and sometimes they cancel out or add together.

There have been odd instances of fluorescent lighting affecting signals in the 400 odd MHz area but very unlikely in this instance, more a problem with multipath with indoor aerials...

x-posted to uk.tech.broadcast - Helpful lot. (Except they are about to prove me wrong on that...) I think you'll get asked where you are.

Andy

It's caused by standing waves in the reflections from inside the house.

That's one reason why rooftop aerials are always preferred over set top aerials.

So you get better reflections from trees, power lines and aircraft.. ;-)

Sod's law innit.

DG