Actually Ken the loss at 800 MHz is usually less than UHF, especially in the long needle pine forests. Typical loss from forests, depending upon the density will be 10 to 20 db. Long needle pine forests will cause an additional 10 db loss at UHF frequencies and gets worse at 512 MHz. Fred W5VAY ----- Original Message ----- From: Ken Arck To: Repeater-Builder@yahoogroups.com Sent: Tuesday, February 06, 2007 7:05 PM Subject: Re: [Repeater-Builder] Additional Loss From Trees
At 04:55 PM 2/6/2007, you wrote: >It is a noticeable loss when the leaves come out. I've pretty much noticed >that a fairly noisy signal with no leaves becomes unreadable when the leaves >are full. My opinion would be additional antenna height could be helpful >since there would be less density to attenuate the signal. <---Just ask the PS agencies in rural areas who have been foolish enough to migrate to 800 mHz trunking about foliage absorption... I'd bet they'd have a few things to say about that :-) Ken ---------------------------------------------------------- President and CTO - Arcom Communications Makers of the world famous RC210 Repeater Controller and accessories. http://www.arcomcontrollers.com/ Authorized Dealers for Kenwood and Telewave and we offer complete repeater packages! AH6LE/R - IRLP Node 3000 http://www.irlp.net
