| This is the best way to
shut down an amplifier after an VSWR alarm, or a power alarm problem.
Your ham radio antenna system can subject your
transceiver and/or amplifier to sudden high SWR conditions due to
intermittent connections, breakdown of antenna components, or even birds
landing on your antenna. Or maybe something has changed in your grounding
system due to weather and you are transmitting without checking first. So
how can you protect that expensive transceiver and amplifier from these
events?
Enter the Array Solutions
ALC-1 Transmitter Inhibit controller. This unit interfaces between your
amplifier’s ALC output, your PowerMaster PTT connections, and your
transceiver’s ALC input to provide fast, rapid protection of your
transceiver and amplifier when a sudden high SWR event occurs.
The Array Solutions
PowerMaster provides a PTT feature which can be used to unkey your amplifier
when an SWR reading above a user-selectable pre-set limit occurs. However,
when this occurs your transceiver’s output can be hot-switched since the
amplifier is being unkeyed while your transceiver is still putting out full
power. Further, some amplifiers are designed such that they do NOT unkey as
long as RF is present so as to eliminate the possibility of amplifier
hot-switching until the RF input has completely decayed to zero. So these
amplifiers can be subjected to a high SWR which could possibly damage them.
The Array Solutions ALC-1
Transmit Inhibit controller eliminates these potential hot-switching or
high-SWR operating problems by instantly applying a cut-off ALC voltage to
your transceiver when the high SWR event occurs. This turns down your
transmitter RF power faster than amplifier RF relays can operate, ensuring
that no hot-switching can occur.
Not using amplifier ALC? The ALC-1 will still shut down any
transceiver that has an ALC input.
PTT
PTT
ALC-1
AMP ALC
TX ALC
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Manual
Download (pdf)
BUY the
PowerMaster ALC-1 - PRICE LIST
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