| Home |
| Search |
| Today's Posts |
|
#1
June 10th 04, 07:24 PM
|
|||
|
|||
How do I feed a wideband VHF yagi with a balaced DE with unbalanced coax?
The yagi is centered on 159 Mhz with a bandwidth of 6 Mhz.
The feed is 50ohm coax. The DE is a simple hertz dipole. It's electrical parameters at the resonant frequency are R 50.9 J + 10.3. What kind of balun would you use? TIA. |
|
#2
June 11th 04, 12:59 AM
|
|||
|
|||
|
You didn't mention if this would be used in some sort of transmitting
application or not. Heck, for just listening across a 6mhz spread, I'd just connect the coax and not worry about it. jw K9RZZ |
|
#3
June 11th 04, 03:40 AM
|
|||
|
|||
|
Just to be precise: it is NOT resonant!! Resonance requires that there
be a zero value for the j term. The +j10.3 indicates your antenna DE is a little long for the measured frequency. Richard wrote: The yagi is centered on 159 Mhz with a bandwidth of 6 Mhz. The feed is 50ohm coax. The DE is a simple hertz dipole. It's electrical parameters at the resonant frequency are R 50.9 J + 10.3. What kind of balun would you use? TIA. |
| Reply |
| Thread Tools | Search this Thread |
| Display Modes | |
|
|
Similar Threads
|
||||
| Thread | Forum | |||
| Horizintal loop with two feed points? | Antenna | |||
| Advice wanted:T-match Coax Balun for Yagi Beam | Antenna | |||
| Poor quality low + High TV channels? How much dB in Preamp? | Antenna | |||
| Coax air choke for 6M yagi | Antenna | |||
| Matching 70 cm Yagi to coax feedline | Antenna | |||
Linear Mode
