Nov 23, 2006 #1 abdoeng Advanced Member level 2 Joined Feb 22, 2004 Messages 647 Helped 76 Reputation 152 Reaction score 63 Trophy points 1,308 Activity points 3,810 hi all,i wish design unipole antenna from 30KHZ to 3MHZ,i look for any active matching circuit. thanks
hi all,i wish design unipole antenna from 30KHZ to 3MHZ,i look for any active matching circuit. thanks
Nov 23, 2006 #2 flatulent Advanced Member level 6 Joined Jul 19, 2002 Messages 4,624 Helped 489 Reputation 980 Reaction score 151 Trophy points 1,343 Location Middle Earth Activity points 46,689 At these frequencies the major source of noise is atmospheric lightning. Use a JFET source follower between the antenna and the receiver.
At these frequencies the major source of noise is atmospheric lightning. Use a JFET source follower between the antenna and the receiver.
Nov 24, 2006 #3 abdoeng Advanced Member level 2 Joined Feb 22, 2004 Messages 647 Helped 76 Reputation 152 Reaction score 63 Trophy points 1,308 Activity points 3,810 thanks for ur reply,ut i search aout any active matching circuits inn that band thanks
Nov 24, 2006 #4 S sinip Full Member level 4 Joined Mar 22, 2006 Messages 215 Helped 13 Reputation 26 Reaction score 2 Trophy points 1,298 Location Republika Srpska Activity points 2,311 abdoeng said: thanks for ur reply,ut i search aout any active matching circuits inn that band thanks Click to expand... Well JFET is active element. Or you actually want some kind of antenna tuner device?
abdoeng said: thanks for ur reply,ut i search aout any active matching circuits inn that band thanks Click to expand... Well JFET is active element. Or you actually want some kind of antenna tuner device?