Hi-Z Antennas 4-8 PRO Manual - Página 10

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3. Check the RED LEDs at the Hi-Z Amps at the base of each vertical, they should ALL be ON.

4. Tune to 160 or 80 meters. Switch On and Off the power at the Hi-Z shack switch and you should hear the noise floor

increase when switched ON. If able, compare to existing antennas, the noise floor on the Hi-Z system will likely be

much lower.

5. Test the directivity by tuning the AM broadcast band above 1 MHz (with no HPF or BPF filter installed). When pointed

at a station and the signal is peaked, turn the control to other directions and observe the F/B and F/S.

6. On the air, especially low angle DX, you will observe best performance in terms of pattern. When a signal is peaked in

one direction, try switching in the direction either side you will see the signal decrease considerably. As you continue

to turn the direction control and observing the signal level, the F/S and F/B performance will become apparent.

7. The advantage is the S/N that our system produces. Good DX'ing.

TROUBESHOOTING also see

Symptom:

Spurs every 10 KHz across 160 meters. Check the Hi-Z Amp connections one of the Hi-Z Amp has the two wires (Antenna,

Ground) reversed, verify these connections are wired correctly.

Some switching power supplies can cause this symptom.

Measure the DC voltage on the vertical. From ground to the vertical with a DVM you should measure ~4 volts VDC. Improper

voltage readings indicate wiring problem.

Low IMD. Verify that the voltage at the +13.8VDC and Ground terminals at the phase controller measures >=12.0 VDC.

Sometimes due to control cable lengths one may need to consider a separate adjustable voltage power supply to insure

correct operation voltage for the Hi-Z system.

Hi-Z Amps – No RED LED ON

Verify that there is a jumper on the phase controller between the 13.8 VDC and Coax Power In terminals.

Birdies, Heterodyning

Causes include close proximity to broadcast stations.

Solutions: One the source of this problem is located, the insertion of either a Hi-Z BPF or Hi-Z HPF, depending on the source of

interference, should be inserted between the output of the phase controller and the input to the 75Ω in-line pre-amp.

Directions Seem Wrong

Verify that you connected vertical 1 to controller Ant1, vertical 2 to controller Ant 2 and so on.

For other topics see technical & application notes at

Hi-Z 4-8PRO UP Manual V1.0

http://www.hizantennas.com/hiz_faq.htm

http://www.hizantennas.com/application_notes.htm

HIGH PERFORMANCE