TV Aerial - what type ... any experts out there

[Pete C]

Hi,

Are these type of aerials any good at getting a Freeview signal through trees or is that a no-no?

cheers, Pete.

[Andy Luckman (AJL Electronics)]

[Unix]

They have a good anti-ghost performance, but usually, trees will decimate reception with any aerial. I would try a BB Grid array, but don't expect reliable results whatever.

[tony sayer]

In article , Andy Luckman (AJL Electronics) writes

Why would you recommend that type Andy?.....

[xenelk]

"BB" Grid Arrays filter out Big Brother?

[Andy Luckman (AJL Electronics)]

Because there are four active elements wired so that out of phase (ghosty) signals will cancel, but in phase signals will add. It also has a wide beamwidth which can help.

[tony sayer]

In article , Andy Luckman (AJL Electronics) writes

Yes, but the path length of the reflected signal can be any number of wavelength's long so I don't see quite how that's going to work. This can come in at anywhere in a phase relationship with the wanted signal.

If its a wide beamwidth array then how can that be after all what is required more then anything where ghosting is a problem is wanted/unwanted discrimination, and the less beamwidth the better is the case.

What an array of dipoles is good for is wideband response commensurate with gain. I take it your referring to a panel arrangement with the four di-poles on a grid rather like the panel type sometimes used in transmission?.