HF AUTOMATIC ANTENNA TUNER
EDX-3
Instruction Manual
Thank you for purchasing your new Alinco accessory.
This Instruction manual contains important safety and operating instructions.
Please read this manual carefully before using the product and keep it for future
reference.
Please be aware that EDX-3 is made especially for Alinco transceivers, and Alinco
is not responsible of any inconveniences when used with radios of other
manufacturers. Alinco can not provide connection instructions to use EDX-3 with
transceivers of other makes.
IMPORTANT
• As a nature of this product, it generates a very high voltage to the antenna
element and other terminals up to several kilovolts.
For this, some countries apply the height restrictions of such devices for
installations. At any case install EDX-3 and elements in the way that a person or
pets can’t access and touch it.
• Modern vehicles/vessels are made of cutting-edge electronics technology.
Transmitting RF signals while driving/navigating may cause interferences to those
electronics devices risking accidents. Be sure to check the safety of operation
before driving/navigating.
Alinco does not reccomend transmission while driving a vehicle, and declines
any responsibility for any consequence RF intereference may cause.
WARNING
To prevent any hazard during operation of Alinco’s radio product, in this manual and
on the product you may find symbols shown below. Please read and understand
the meanings of these symbols before starting to use the product.
Word Definition
Danger
CAUTION
NOTE
Personal injury, fire hazard or electric shock may occur.
Equipment damage may occur.
Precautions to avoid inconveniences.
DANGER HIGH VOLTAGE! NEVER touch the antenna terminal, ground
terminal, antenna or counterpoise while transmitting. Place the EDX-3, antenna and
counterpoise in positions where no one can touch them.
NEVER use without a ground connection.
NEVER transmit during internal maintenance. This may cause an electric
shock.
USE the ground terminal for ground connection. The mounting plate is not
connected internally.
Ground terminal
Mounting plate is NOT grounded.
DO NOT operate your transceiver when enough current is not available.
Be cautious to battery drain (flat-battery) of your car/boat.
AVOID using the EDX-3 in areas where the temperature is below -20°C
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(-4°F) or above +60°C (+140°F).
SUPPLIED ACCESSORIES
The following accessories are supplied with the EDX-3.
A
B
C
D
E
Qt y.
A U-bolts ........................................................................... 2
B U-bolt plates .................................................................. 2
C Flat washers (M6) ........................................................... 8
D Spring washers (M6) ...................................................... 8
E Nuts (M6) ....................................................................... 8
F Hex head bolts (M6×50) ................................................ 4
G Self-tapping screws (A0 6×30) ...................................... 4
H Weatherproof cap .......................................................... 1
I Ground cable ................................................................. 1
• Standard accessory may vary depending on the model you have purchased.
Please consult with your Alinco dealer for the details before purchase.
F
G
H
I
Optional items necessary to
operate EDX-3
The following parts are additionally required for installation, but are not supplied
with the EDX-3.
Purchase these parts locally according to your preferences.
A AWG 14×4-conductor shielded cable or grounded antenna with base
B Fixing hardware such as a metal mast or a car antenna bracket
C Materials like Isolation tape to protect connectors from water and salt
D Tools to be used during the installation
E Common mode filtering parts such as ferrite cores and beads
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FEATURES
Matches all bands
EDX-3 matches any frequency on every HF band across 1.8-30 MHz.
Full automatic tuning
Just press the [TUNE] key on the transceiver, and EDX-3 adjusts immediately to the
minimum SWR of any frequency on any HF band*.
HF operation anywhere
EDX-3 allows you HF operation where antenna element length is restricted due to
space.
Weather resistant*
EDX-3 is housed in a durable, weather resistant ASA case with a rubber gasket.
The antenna tuner can be conveniently installed even outdoor.
250 memories for shorter tuning time
To decrease the tune-up time, EDX-3 automatically stores the matching conditions
for up to 250 frequencies. Re-tuning for a memorized frequency takes only a
second.
Low power tune up
EDX-3 emits low output power during tuning. This feature reduces the possibility of
causing interference to other stations.
Tuner through function
The tuner through function is built into EDX-3. This function helps improve receiver
gain, depending on the antenna element length used, and operating frequency.
* Please note that some restrictions may apply to antenna length and conditions of
use.
Details are contained in this manual.
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TABLE OF CONTENTS
TABLE OF CONTENTS
IMPORTANT ………………………………………………… 1
WARNING …………………………………………………… 1
SUPPLIED ACCESSORIES ……………………………… 2
Optional items necessary to operate EDX-3 ………… 2
FEATURES ………………………………………………… 3
TABLE OF CONTENTS …………………………………… 4
ANTENNA SYSTEM ……………………………………… 5
Antenna for ship ………………………………………………………… 5
Antenna for land operation …………………………………………… 6
Ground and counterpoise ……………………………………………… 7
INSTALLATIONS …………………………………………… 9
Installation outline ……………………………………………………… 9
Mounting ……………………………………………………………… 10
Operation …………………………………………………………… 12
CONTROL CABLE SIGNALS ………………………… 13
Terminal information ………………………………………………… 13
About extending cables length …………………………………… 13
UNIT DESCRIPTION AND SPECIFICATIONS ……… 14
Unit description ……………………………………………………… 14
Specications ………………………………………………………… 14
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