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To turn the factory default
ON
:
1. Turn power ON.
2. Press any two of the push-button switches simultaneously and hold them in (LEDs will start
to blink) until the blinking stops. The factory default is now turned on. If you turn power
OFF, wait about 8 seconds (allows internal capacitors to discharge), then turn power ON, the
system will run the relay exercise routine as described above.
LED brightness
may be set by pushing and holding the OMNI button for several seconds. While
holding the OMNI button, all the LED’s will be illuminated and then start flashing. Release the
OMNI button. The LED’s will continue to slowly flash and display four brightness settings (1
through 4). Select the desired brightness level by pressing the corresponding red switch button.
All four LEDs will then show the selected brightness setting. Press the OMNI button again to store
the new brightness setting.
Note
: The controller stays in the omni mode while adjusting LED brightness.
When the "RADIO" signal is grounded (see
Figure 8
) you are in Transmit mode. If you press any
of the push-button switches, they will flash and the unit will not switch positions until you go from
Transmit to Receive mode. This avoids 'hot switching'.
Using the Transmit Four Square System Phasing Unit
Each operator develops his own technique for using the directional capability of the Transmit Four
Square Array. The contest operator has somewhat different goals from the DX chaser.
The ability to direct one’s signal in any one of four azimuthal directions provides two immediate
benefits.
1. The directional gain can provide the equivalent of up to 4X your transmit power, and
significantly better receive signal to noise.
2. The rear-facing null provides increased receiving ability by reducing most signals from
undesired directions by 15 dB or more.
A contest station or DX’er intent on making the maximum number of contacts in one general
direction finds it useful to sit on a frequency and run contacts using a single direction. This will
maximize contacts from a specific direction. Eastern US stations often find North East a good
direction because of the large number of European contacts. East Coast US stations also gain a
significant receiving advantage by nulling out unwanted noise and signals behind them.
The inherently low angle of radiation reduces high-angle signals (from moderate distances) while
maximizing signal arriving over long distances.
The unique “OMNI” feature of the DX Engineering Four Square System Phasing Unit adds a new
