5
IN ANY CASE,
DO NOT CORRECT SWR WITH THE COUPLER THROUGH, USING AN
INDOOR TUNER. AS THE ANTENNA FEED-POINT IMPEDANCE IS GETTING HIGHER THAN
50 OHMS (WITH ITS MAXIMUM VALUE NEAR λ/2) THE SAME AMOUNT OF POWER
MUST BE SUPPLIED IN THE FORM OF LOWER CURRENT, BUT HIGHER VOLTAGE.
SINCE THE INPUT CIRCUITS OF THE COUPLER WERE DESIGNED TO HANDLE POWER IN
THE VICINITY OF 50 OHMS, THEY WILL BE DESTROYED !
IF THE USED ANTENNA IS NOT NEAR 50 OHMS AT THE OPERATING FREQUENCY, EVEN
WITH MODERATE POWER LEVELS, THE COUPLER MAY SUFFER !!!
Intend of use:
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This device is designed to match 1 end-fed wire in the HF spectrum to a 50 ohm coax cable.
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Use of the JC-5s beyond the specified frequency or power range can destroy it and cause safety risks.
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This product must be considered as a sub assembly, intended to be a part of an amateur antenna
installation.
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This product is exclusively intended for outdoor use, in a fire safe and explosion safe environment.
Important safety instructions:
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Read these instructions prior to installation of the product and heed warnings Retain this document.
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Apply during installation and use all possible safety countermeasures, like described in amateur radio
courses and literature.
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Install the product out of reach of persons and animals.
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Always install the product so that it cannot fall on persons or property.
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Do not attempt to modify the enclosure . Attempts to modify the enclosure will damage it and void any
warranty.
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Inspect the product on a regular basis and immediately replace if damaged.
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Install additional external lightning protection and earthing, as a means of secondary protection, and
disconnect the antenna wires during thunderstorms.
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Never work on the antennas or antenna wires during thunderstorms.
You will find the following “High Voltage Hazard” symbol on the product, indicating that the terminals (just
like the antenna itself) carry dangerous high voltages during transmission, and that caution is required, in
order to avoid electrocution or RF burns.
You will find the following "crossed out wheeled bin" symbol on the product, indicating that it can harm the
environment and it should be disposed of by the end user, separate from other types of waste.
In case of questions, please contact your local authorities regarding recycling.