According to an ancient DOS Site management tool, the duplexer or cavity will require 75.6dB of Isolation for this combo not to cause receiver degenereation. This assumes Receiver 12dB Sinad point in uV = .2
48 feet Vertical Separation, or 1530 Feet Horizontal Separation will provide the required Separation. For 462 TX and 467 RX @ 50 W = 48'V or 1530'H Same for 467TX and 462 RX @ 50W at 40W = 45'V or 1369'H at 30W = 42'V or 1185'H at 20W = 38'V or 968'H at 10W = 32'V or 684'H at 5W = 26'V or 484'H at 1W = 17'V or 216'H Other factors that may affect the accuracy of these figures are antenna, tower, terrain, buildings, feed-lines, etc...... This is from an old copy of CommShop ----- Original Message ----- From: "robertakelseyjr" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Saturday, November 12, 2005 6:36 PM Subject: [Repeater-Builder] No duplexer- 2 antenna ? >I have a new yeasu 9000 that seems i can program (its synthisized) multiple >channels > and fx's for repeater mode and at the push of a button change pairs.. If I > understand > the software correctly. > > So If I want to use it to its full potential how much physical separation > of the > antenna''s do I need on the same tower so I dont kill the sensitivity. > > I'm programing using the gmrs pairs 462/467 so the max tx is 50 watt. > > Or am I just way over thinking this. 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: http://docs.yahoo.com/info/terms/
