HiZ or LowZ Antennas

[shirsch101]

My DX394 has the ability to use either HiZ or LowZ antennas. Which is better a LowZ end fed or HiZ wire. If HiZ how long can the wire be
Thanks

 

[N1EXA]

My DX394 has the ability to use either HiZ or LowZ antennas. Which is better a LowZ end fed or HiZ wire. If HiZ how long can the wire be
Thanks

Hi Z would be a long wire say 400 -1000 Ohms
and low z would be a 50 Ohm Coax Fed Dipole at 50 Ohm impedance
As for an antenna Take 468 Divide by the Frequency and that gives you a half wave use 234 for a 1/4 wave. The answer is in Feet
you can times 12 to give you inches.
An example would be 234 / 27.500 Mhz = 8.5 feet or times 12 = 102 inches You can times by 2 to make a Half Wave instead of 468.
this formula works for all bands for a simple antenna.
Throwing out a random lenth of wire will work but you will get better results cutting to the frequency you want.

Pete N1EXA

Hi Z Long wire and Low Z Dipoles exaples below.

SWL Receiving longwire antenna

Figure shows the common receiving longwire. The antenna element should be 30 to 150 ft in length. Although most texts show it horizontal...

ham-antennas.blogspot.com

 

[merlin]

Performance, there is no difference. what is best is how your antenna system is configured.
Say you have a dipole with twin lead feed, that would connect to your High Z connections.
If your dipole hs 50 ohm coax feed, then connect to the low Z coax connector.
Internally, the HI Z has a balun that goes to the LO Z point in the front end.
How long, it is recommended to use a length reasonant at the lowest frequency you will be operating on.

 

[shirsch101]

Thanks everyone for the suggestions I will try different things