The Alpha Delta Model ASC Antenna Selector Console Desk Top Coax Switch Series.
The Alpha Delta Model ASC Antenna Selector Console desk top coax switch series brings a new
level of versatility and convenience to your station operation. This series retains all the features
and specifications of the precision 4 position DELTA-4B series, including ARC-PLUG (tm) module surge protection, in a desk top console that
will sit on your desk next to your gear. The console does not have to be secured or bolted down!
The console features a powder coated steel housing and a solid brass ground buss, with #10 wire
attachment hardware, across the rear of the housing providing a common ground point for all
station equipment and accessories. “Non-slip” feet are attached for solid stability.
The Model ASC Console is available in addition to the famous DELTA series surge protected coax
switch line. The entire DELTA family features solid mechanical cavity thru-line micro-strip
switching, without the use of problematic electronics and microprocessors. The series offers low
loss constant impedance performance and best co-channel rejection (typ >60dB) depending on
connector type and freq. Rated at 2 kW SSB/CW output. Made in our ISO-9001 certified facility.
You will note the switch is positioned in the housing at a 20 degree angle from the horizontal. If
the switch was 90 degrees from horizontal (vertical), the cables would come out at such an angle
that there would be large cable “loops” and they would tend to try to pull the switch over
backwards or move it back across the desk. A 20 degree angle will provide effective viewing and
minimize or prevent the cables and hand pressure from moving the console.
The solid brass ground bus on the housing can be used to provide a single point ground for your
equipment and accessories. It also provides a ground point for the operation of the Model D-4
ARC-PLUG (tm) gas tube surge module located in the switch. A proper ground wire must be
attached to the bus for the operation of the Model D-4 during surge discharges. Proper grounding
techniques are covered in various ARRL and other publication materials.