Take the 2-minute tour ×
Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. It's 100% free, no registration required.

I'm trying to make sense of the mess of TV aerials (all shapes and sizes) and cabling on the (shared) roof of our tenement.

One potentially useful cross-checking piece of information I have is that the aerial I'm looking for is a "32 element digital" - it's also a "wideband" - put in ~5 years ago (in anticipation of the transition to digital; I'm in the UK). But what does the "32" actually refer to ? If I count the number of metal struts, should there be 32 ? Or does it refer to something hidden away out of sight in the "hub" the cable goes into, or a more abstract concept like the number of channels receivable ?

share|improve this question
add comment

2 Answers

up vote 5 down vote accepted

Yes- it the number of rods sticking out of the main antenna. 16 on one side 16 on the other side.

enter image description here

These rods help remove ghosting, provide a clearer overall signal.

They all have their own purpose and lengths are very precise and specific. These should not be bent, extended, shortened or connected to anything else in any way will cause poor signal. Pigeons and birds do not affect reception as they do not cause direct induction of the circuit.. but a fat bird can bend the antenna and cause some issues.

Even though that is the concept it does not always refer to any exact number. Sometimes 3 spokes can be counted as 1 element because they act a single "element"

It will not have anything to do with number of channels- this depends on your region, the version of the set top box (old Freeviews cannot pick up many new channels) best use the FreeView HD ready boxes for best compatibility.

enter image description here

Hope that helps you out.

share|improve this answer
1  
Aerial successully identified :^) Admittedly by following wires, but it was reassuring that what it led me to does indeed have 16 "struts" each side. –  timday Aug 6 '12 at 16:21
add comment

In antenna design, 'elements' refers to the parts which convert the radiated signal to an electrical signal, so in this case it means the number of metal bars.

They are arranged at distances which will increase the amplitude of the wavelengths you want, and generally more elements gives you a greater signal strength (up to a point)

share|improve this answer
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.