USER’S GUIDE
2
Chapter 1 Getting Started
How it Tunes:
Controlling and reading your AntennafierTM parameters is easily accomplished with a Tunable Controller.
This device works together with your Tunable AntennafierTM to send and receive tuning and status
information via the 50 Ohm coax cable
connecting these devices. A typical setup is as shown below:
The Tunable Controller performs several operations. First it injects DC and 2.4GHz radio traffic onto the 50
Ohm Coax to feed the Bi-Directional Amplifier (AntennafierTM). Secondly it is an interface which controls
the Antennafier’sTM status and tune information via an Ethernet or USB connection.
The information exchanged between the Tunable Controller and AntennafierTM is also carried through the
50 Ohm coax and does not interfere with the 2.4GHz radio traffic.
When +12VDC is applied to the Tunable Controller a Built In Test (BIT) is initiated. During BIT the
Controller pulls vital status information from the AntennafiersTM built in memory. After passing BIT one can
easily change the Antennafier’sTM Channel with a recessed “SET” switch located on the Tunable
Controllers front panel or electronically change all parameters via the USB or Ethernet connection. Once
new information has been sent to the AntennafierTM it stores this in its internal memory.
The AntennafierTM always remembers its last tune information even when power is cycled. This is important
since the AntennafierTM can be used as a stand-alone device without a Tunable Controller. Just like our
standard non tunable amplifiers, this device can be operated in the same fashion.
2.4GHz
Radio Card Tunable
Controller Tunable
Antennafier
Ethernet or
USB Interface 50 Ohm
DC Power
