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adapting a VHF antenna / aerial for UHF?

post #1 of 5
Thread Starter 
I've searched around and I haven't been able to find any information or mention of how to DIY adapt a VHF aerial for better UHF reception.

I've got a large old VHF aerial that has good reception over the VHF and lower half of the UHF frequencies but I'd like to adapt it to improve the reception in the 660mhz to 775mhz range.

Is there any way this can be done? Would it require specific types of wire?

Thanks for any help
post #2 of 5
Quote:
Originally Posted by homerging View Post

I've searched around and I haven't been able to find any information or mention of how to DIY adapt a VHF aerial for better UHF reception.

I've got a large old VHF aerial that has good reception over the VHF and lower half of the UHF frequencies but I'd like to adapt it to improve the reception in the 660mhz to 775mhz range.

Is there any way this can be done? Would it require specific types of wire?

Thanks for any help

You'd be many miles ahead just by adding a separate UHF antenna via a U/V diplexer rather than trying to re-engineer an existing antenna for something it was never intend for.
post #3 of 5
Quote:
Originally Posted by homerging View Post

...I've got a large old VHF aerial that has good reception over the VHF and lower half of the UHF frequencies but I'd like to adapt it to improve the reception in the 660mhz to 775mhz range.

Is there any way this can be done?

Not really.

Easier to just add a UHF antenna and combine it with your VHF antenna.
http://www.solidsignal.com/pview.asp?mc=03&p=HD-9022

You may need a bigger one than this, depending on your TVFool results for your address.
http://www.tvfool.com/index.php?opti...id=13&Itemid=1
post #4 of 5
Thread Starter 
Thanks but I am not in the US. Buying a new aerial would not be cheap. I do already get reception in the higher UHF band, I just would like to improve it a notch, so a Edward Scissorhands reshaping of the existing aerial wasn't what I had in mind.
post #5 of 5
If I were determined to add some UHF performance to a VHF only antenna at minimum expense, I would try connecting a UHF loop directly on the 300 ohm feed terminals and position the loop perpendicular to the broadcast towers, (hanging straight down) It would need to be secured by some means so that the wind would not blow it out of position.
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