RE: [Repeater-Builder] Re: Diversity RX 2 meters

[Steve S. Bosshard \(NU5D\)]

http://www.sigmawireless.ie/documents/Understnd%20Spc%20Dvrsty%20Rev2.pdf   In their paper Sigma Wireless discusses space diversity at 405 Mhz and three different combining techniques,  Selective (voting) Equal Gain Additive, and weighted ratio combining, and the merits of each.   In the early days of 800 smr both stations and subscriber units offered diversity antenna systems.  The casting on a Johnson VX repeater has a place for a second antenna port, but I have never seen a voting circuit – seems like they uses some sort of combining technique BUT I might be wrong.   That does not say that voting won’t work, it will.  For reasons cited earlier, voting might  not be the optimum way to achieve space diversity gain.   When I get some time I will dig out the manuals on Johnson 800 Mhz diversity  Stations and see how they do it.   73,   Steve NU5D Yahoo! Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/   To unsubscribe from this group, send an email to: [EMAIL PROTECTED]   Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.