At 03:17 PM 4/17/04 +0000, you wrote: >I have an academic question for the group (point me to a manual or >online reference if needed). > >If one was to build a VHF repeater, say 10W transmit, two antennas >and no duplexer, what is the minimum frequency separation needed? > >I know it depends on a lot of things, such as power, receiver front >end, vertical and horizontal ant sep, etc. > >Any rule of thumb? > >73 tom
Vertical is more effective than horizontal since increasing the vertical moves the receiving antenna further out of the pattern than increasing the horizontal, and using horizontal separation really increases the feedline losses. These may help: <http://www.repeater-builder.com/pix/vertsep.jpg> <http://www.repeater-builder.com/pix/horizsep.jpg> Mike WA6ILQ 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/
