EFA Econo-Tuner ET-1 User manual

ET-1
Econo-Tuner™
Owner’s Manual

FOREWORD
Congratulations on choosing the Advanced Electronic Applications ET-1 Econo-Tuner™
to enhance your station's performance.
The ET-1 is an affordable antenna tuner developed by AEA for the economy-minded
customer who wants a quality unit.
To fully enjoy the benefits of the ET-1 Econo-Tuner™, please read this owner's manual
thoroughly before operating the unit. It you have any questions, | encourage you to
contact an AEA authorized dealer or one of our technical service representatives at:
‘Advanced Electronics Applications, inc
P.O, Box 2160
Lynnwood, WA 98036-0918
[phone]/8 a.m. to 4:30 p.m. Pacific time
FAX [phone]
TELEX 6972496 AEA INTL UW
73,
C. Mike Lamb N7ML
Prosident
Advanced Electronic Applications
TABLE OF CONTENTS |
1. Features .. seesee
2. Specifications nce
3. Controls/Connectors
| Front Panel ...
Rear Panel
4. Installation ..
5, Tuning
6. Notes

1. FEATURES
‘The ET-1 Econo-Tuner™ optimizes the performance of your antenna and transmitter or
SWL receiver by providing adjustable impedance matching. The ET-1 also measures the
power and Voltage Standing Wave Ratio (VSWR or SWR) which allows you to tune the
SWR to the lowest ratio possible for the selected transmission frequency. The ET-1 also
features a precision-frequency compensated dual-movement SWR meter.
2. SPECIFICATIONS
FRONT PANEL INDICATORS AND GONTROLS
“Meter ‘Dual-movement D’Arsonval cross needle
| power and SWR meter
CONTROLS
‘Transmitter Tuning Continuous rotation capacitor
Antenna Tuning Continuous rotation capacitor
Inductanoe. 12 position switched inductor
Antenna Selector % position: Coax 1 tuned and tuner
bypass, coax 2 tuned and tuner
| bypass, bypass and balanced
antenna
Power Switch 2 position sow/a00w
REAR PANEL CONNECTORS
Antenna 1 $0239 connector
Antenna 2 $0239 connector
Bypass $0239 connector
Transmitter Input $0239 connector
Balanced Output ‘Dual banana jack
End-Fed Wire Banana jack
OTHER |
Frequency Coverage 4.8-30 MHz
Power Maximum 300 W continuous:
Dimensions 35H K10.2Wx94D
Weight 3.4 Ibs.

3. CONTROLS/CONNECTORS
FRONT PANEL CONTROLS
1, TRANSMITTER
Continuously adjustable input capacitor.
2, POWER/SWR METER
Dual-needle meter displays FORWARD and REFLECTED power in watts. SWR is
measured where the two needies intersect on the red scale.
3. ANTENNA
Continuously adjustable output capacitor.
4, ANTENNA SELECTOR
Six-position rotary switch selects an output coaxial connector.
BYPASS COAX selects BYPASS COAX connector bypassing the impedance match-
ing circuit but providing SWR, FORWARD and REFLECTED power meter readings.
DIRECT COAX 1 selects COAX 1 connector bypassing the impedance matching
circuit but providing SWR, FORWARD and REFLECTED power meter readings.
DIRECT COAX 2 selects COAX 2 connector bypassing the impedance matching
Circuit but providing SWR, FORWARD and REFLECTED power meter readings.
TUNED COAX 2 selects COAX 2 connector through the impedance matching circuit
TUNED COAX 1 selects COAX 1 connector through the impedance matching circuit
TUNED WIRE selects the END FED WIRE connector through the impedance maich-
ing circuit. For balanced antennas, the wire antenna jack is externally connected to
the balanced line.
5. INDUCTOR
12-position rotary switch to vary inductance.

6. POWER RANGE SWITCH
‘Two-position switch selects the range of FORWARD and REFLECTED power
displayed on the power meter.
When the METER button is out, the FORWARD meter scale reads 300 watts full
scale and the REFLECTED meter scale reads 60 watts full scale. When the METER
button is in, the FORWARD meter scale reads 30 watts tull scale and the
REFLECTED meter scale reads six watts full scale.

REAR PANEL CONNECTORS
4. TRANSMITTER IN
Coaxial connector for input from SWL receiver or transmitter.
2. GOAX4
Coaxial connector for output to Antenna One.
3. COAX2
Coaxial connector for output to Antenna Two.
4, BYPASS
Coaxial connector for output to dummy load or third coax output. Bypasses tuner, but
meter circuits remain active.
5. GROUND
Postiwing-nut type ground connector.
6. BALANCED OUTPUT
‘Two banana jack connectors for output to RF balanced twin-lead antennas.
(Note that jumper must be used as shown by the dotted line.)
7. END FED WIRE
Banana jack for output to a single-wire antenna. (Do not use jumper.)

4. INSTALLATION
Carefully unpack your ET-1 from the packing carton and inspect it for signs of damage. if Unpacking
any damage is apparent, notify the transportation carrier or dealer immediately. We
recommend keeping the packing carton for moving, storing or reshipping the tuner.
Select a location for the ET-1 that allows the connectors to be free from any possible Location Selection
‘contact during operation.
WARNING, SOME BALANGED OR END-FED ANTENNAS WILL PRODUCE HIGH |
RF VOLTAGES AT THE BANANA CONNECTORS. RF BURNS |
| MAY RESULT IF TOUCHED DURING TRANSMISSION.
Connect a coax cable from your transmitter or receiver to the TRANSMITTER con- Installation
nector on the rear panel. Keep the cable as short as possible. Mf you use a linear Procedures
amplifier, connect your transmitter to the linear amplifier input and the linear amplifier
output to the ET-1. Do not use more than 300 watts through the tuner.
2, Connect coax cable(s) from your antenna to COAX 1 or COAX 2 connectors on the
rear panel. These connectors are either direct from the transmitter or through the
tuned circuit depending on the setting of the OUTPUT SELECTOR switch
It you are using a balanced feed antenna, connect a balanced line to the BALANCED
OUTPUT connectors and jumper banana jack (8) with lower jack (7) as shown by
dotted line.
{fusing a single wire antenna, connect it to jack (7) without installing jumper.
Connect a dummy load to the BYPASS (4) connector using a coax cable. This lets
you select the dummy load from the OUTPUT SELECTOR switch. Any antenna that
does not require the use of an antenna tuner may be connected to the BYPASS
connector, if desired.
2
oe
Before
Operating
To avoid possible damage to the ET-1 Econo-Tuner™, set TRANSMITTER,
ANTENNA and POWER RANGE switches as outlined in the next section before
applying transmitter power.
Begin tuning with your transmitter set at a low output power setting (10 to 20 W).
| WARNING!
* DO NOT OPERATE THE ET-1 WITH THE COVER OFF.
+ DO NOT CHANGE INDUCTOR SWITCH WITH MORE THAN 30 WATTS OF
- APPLIED POWER.

5. TUNING
1. Select the band and frequency of desired operation.
2. Set TRANSMITTER, ANTENNA and INDUCTOR controls to the suggested settings
before applying transmitter power. Actual settings may vary from antenna to antenna.
BAND/FREQUENCY | TRANSMITTER ANTENNA INDUCTOR
Sug. | Actual | Sug | Actual Actual
__160M/1.8 MHZ 5
75M/3.75 MHz
40M/7.15 MHz
30M/10.125 MHz
20M/14.175 MHz
47M/18.118 MHz__|
15M/21.225MHz__|
12M/24.940 MHz |
10M/28.850 MHz
8. Set your transmitter to a low power output. if your transmitter has a TUNE position,
select that position
4. Ifyou use a linear amplifier, set it to Standby. Do not use the linear amplifier until the
ET-1 is tuned. Do not exceed 300 watts!
5. Set POWER RANGE switch in to 30 W LOW (with meter button depressed).
6. Set OUTPUT SELECTOR switch to BYPASS or the position matching your antenna
connection. To tune your antenna, the switch selection must be set to: COAX 1
TUNED, COAX 2 TUNED or WIRE (BALANCED ANTENNA). Selecting COAX 1
DIRECT, COAX 2 DIRECT OR BYPASS bypasses the tuning section
7. Rotate the TRANSMITTER, ANTENNA and INDUCTOR controls for maximum noise
‘or signal as heard on your receiver.
8. Key your transmitter and adjust the power level for a reading of 10 watts on the
FORWARD scale. Adjust the TRANSMITTER, ANTENNA and INDUCTOR controls
for a minimum REFLECTED reading while maintaining a FORWARD reading of 10
watts using your transmitter power control.
9. Readthe SWRonthe red scale at the point where the two needles intersect. Repeat step
hine until the lowest SWR reading is obtained. The SWR should be 2:1 or lower.
NOTE: THIS PROCEDURE TAKES PATIENCE THE FIRST TIME. THE TRANSMITTER
AND ANTENNA CONTROLS VARY THE CAPACITORS AND PROVIDE FINE
ADJUSTMENTS. THE INDUCTOR CONTROL PROVIDES COARSE ADJUSTMENT,
10. When you have tuned your antenna to the best SWR, record the settings of the
TRANSMITTER, ANTENNA and INDUCTANCE controls on the chart above for
future reference. When you retune, use these settings as your starting point
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6. NOTES
‘An SWR of 1:1 is best, but an SWR as high as 2:1 may be acceptable.
Check your transmitter manual for details.
Hf you cannot get an acceptable SWR, lengthen or shorten your
antenna and/or feedlines and retune,
It you get low SWR readings at more than one setting, use the
setting that gives:
» The highest FORWARD power reading.
‘The lowest REFLECTED power reading.
Uses the largest capacitance (highest number) on the
TRANSMITTER and ANTENNA controls.
‘Any time a new or different antenna is connected, itis necessary to
repeat the tuning procedure for each antenna,

7. SCHEMATIC DIAGRAM
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8. WARRANTY
LIMITED WARRANTY
ADVANCED ELECTRONIC APPLICATIONS, INC. warrants to the original purchaser that
this product shall be free from defects in material or workmanship for ninety days from the
date of original purchase. In order to obtain warranty service: (1) Complete and mail the
warranty registration card within 10 days to Advanced Electronic Application, Inc... anc (2)
Send written notification to the address below or telephone as soon as possible after
discovering a possible detect:
‘Advanced Electronic Applications, nc.
‘Attention: Technical Support
2008 - 196th S.W.
Lynnwood, WA 98036
[phone]
‘The written notification must include a copy of the invoice. Include a description of the datoct
partor condition, with details of the electrical connections to associated equipment and list
‘Such equipment. Please enclose your name, phone number, and address. Shipping
charges for any parts or units submited for replacement under this warranty must be paid
by the purchaser.
Corract maintananca, repair and use are important to insure proper performance from this
product. Carefully read the Instruction Manual. This warranty coos not apply to any defect
‘AEA dotermines is caused by (1) improper maintenance or repair, including the installation
of parts or accessories that do not conform to the quality and spectication of the original
parts; (2) misuse, abuse, neglect, \proper installation; (3) accidental or intentional
damage. The fiold installation of circuits or batteries according to the instructions in the
manual will not nulity this warranty.
Allimplied warranties, if any, terminate ninety days from the date of original purchase. AEA
is not responsible for damage to other equipment or property or any other consequential or
incidental damage of any kind whether based on contract, negligence, or strict liability,
Maximum liabilty shall not, in any case, exceed the purchase price of the unit
‘The foregoing constitutes AEA’s entire obligation with respect to this product. The original
purchaser and any user or owner shall have no other remedy and no claim for incidental or
Consequential damages. Some states do not allow limitations of how long an implied
warranty lasts or do nct allow the exclusion of incidental or consequential damages,
therefore, the above limitations and exclusions may not apply to you.
This warranty gives specific legal rights. You may also have other rights which vary from
state to state.
10

ADVANCED ELECTRONIC APPLICATIONS, INC.
P.O. Box 2160 + 2008-196th Street SW
Lynnwood, WA 98036-0918
[phone] Telex: 6972496 AEA INTLUW.
Fax: [phone]
ted soecfeatone ae approximate and subject ia change
Conyright 1990.
Part No. 040-049-1 4/90