Home |
Search |
Today's Posts |
#1
![]() |
|||
|
|||
![]()
I am confused by an issue and hope some of you gurus can help.
I understand matching at the transmitter end. Using the "right" length of line or an antenna tuner - oops, I mean conjugate matching device, I can get the rig to put all or as much power as it can into the line. If I choose ladder line, it has very low loss in the line itself. So far -- so good. But what happens where the line hits the antenna? If the line is 50 or 450 ohm and the antenna is exhibiting 2 ohms, isn't there a big mismatch and a lot of lost power? How much? Would the 450:2 mismatch lose more power than a 50:2 mismatch and thereby give up the advantage gained by the low loss in the 450 ohm ladder line. I don't see this quantified in the antenna modeling programs. I realize in multiband use, the mismatch will vary so there is not a whole lot you can do except put the tuner at the junction of the antenna and line. So, why isn't that the "normal" way to handle the problem? -- Radio K4ia Craig "Buck" Fredericksburg, VA USA FISTS 6702 cc 788 Diamond 64 |
Thread Tools | Search this Thread |
Display Modes | |
|
|
![]() |
||||
Thread | Forum | |||
Antenna impendace matching for old tube receivers | Antenna | |||
Series-Section Xmission Line Impedance Matching | Antenna | |||
Matching 70 cm Yagi to coax feedline | Antenna | |||
Load matching puzzle | Antenna |