Hi-Z Antennas HIZ-PC-4A 매뉴얼 - 페이지 18

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High Performance HF Receiving array Systems

There are 4 sets of two pin jumpers on the PC4A circuit board to adjust the array for one of two array

size selections.

There is a 60 foot per side and an 80 foot per side recommended size selection for best

performance of these arrays.

You must remove the tiny screws holding the lid on the PC4-A phase combiner to access these

pins. Opening the enclosure will reveal the circuit board as pictured.

Each little pair of jumpers can be moved from factory setting of 60 foot dimension at the right side to

80 foot settings to the left. Each jumper must remain inline with the relays as seen at the top of the

board. It may be pertinent to draw a simple sketch of the pin positions before attempting to move the

these type pin header connectors. All 4 pairs must be moved at the same time in order for the array to

work properly.

And Components

Appendix D for the HIZ-PC4A Manual

jumpers if the user is not familiar with