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The output is optically isolated from the input - no more "hot" keys on the operating bench, and no more blown components in your solid state transceiver from keying that SB-series or other tube amp. An LED lights whenever either input is active so you know when the output is on. Input from your straight key, bug, computer, electronic keyer, foot switch or external T/R output of your transceiver controls the input of an optically isolated solid state relay with dual MOSFET outputs.
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You can also easily build it into your amp or other gear! There are four mounting holes for #6-32 or M3.5 screws, plus a 2 x 6 pin header for quickly and easily making all the connections to the UKA-3+ board without using the connectors. To make it easy to integrate into your station, your UKA-3+ can be built to work from any AC or DC power supply from 3 to 18 Volts. The kit is designed to use a nominal 12V AC or DC power supply. All standard connectors are used for maximum flexibility.Ī power LED shows that the device is powered on and ready, and the status LED shows when your rig or amp is keyed.
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Use both your computer and electronic keyer during contests, for example. Note that you can connect TWO inputs at the same time - one active-high, one active-low.
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The keying input can come from a wide range of sources, including:Īny relay-type transceiver amplifier keying outputĪny transistor or MOSFET-type transceiver amp keying outputĬomputer parallel or serial port output pin A single 3.5mm (1/8") stereo jack is used for active-high and/or active-low inputs, and an RCA phono jack is provided for the keying output. All parts are thru-hole PCB mount, there are no surface-mount parts. This totally silent solid state relay is rated for as much as 800V DC or AC, at up to 1.35A (see options below)! Use it to key your tube amp from a solid state rig, or keep that high voltage off your straight key - no more getting zapped when you accidentally touch the wrong part of the key! Use this to key nearly any solid state, grid-block or even cathode keyed rig transmitter, transceiver or amplifier. Two LEDs to indicate power and keying status On-board header for integrating into your equipment The UKA has been featured in the 2008-2010 ARRL Handbook for Radio Communications!Īnti-shock key to rig interface for "boat anchors" EMail SubscriptionRegistered users are allowed to subscribe to specific review topics and receive eMail notifications when new reviews are posted.