Specifications

100 http://www.ameritron.com
AMERITRON True Legal Limit
TM
Tuner
Easily handles 1500 Watts continuous carrier even on 160 Meters . . . High-current edge-wound silver plated
Roller Inductor . . . Two 500 pf high capacitance tuning capacitors with 6:1 vernier reduction drives . . . 3 core
choke balun . . . Six position antenna switch . . . True peak reading Cross-Needle SWR/Wattmeter . . .
• Handles well over 1.5 kW carrier
• Super High Current edge-wound
silver plated Roller Inductor
• 500 pf tuning capacitors with 6:1
vernier reduction drives
• 3 core choke balun
• 6 position antenna switch
• True peak reading meter with
LED Meter Light
AMERITRON’s ATR-30 True Legal
Limit
TM
roller inductor antenna tuner is ham
radio’s toughest! It’ll handle 1500 Watts
continuous carrier output on all modes and
all HF bands into most antennas -- even on
160 Meters where most antenna tuners fail.
It’s perfect for Ameritron’s most power-
ful amplifiers where the ATR-30 just loafs.
All band coverage lets you operate 1.8-
30 MHz including all MARS and WARC
bands.
Super High
Current Roller
Inductor
You’ll see
Ameritron’s
new super high current air core roller
inductor. It’s edge wound from a thick
solid copper strip and silver plated.
This produces a large surface area and a
massive conductor. It can carry huge circu-
lating RF currents and withstand tremen-
dous heat that’ll melt or burn ordinary
roller inductors.
A gear driven turns counter and crank
knob gives you precise inductance control.
Two 500 pf Tuning Capacitors
Two 500 pf -- the highest of any anten-
na tuner -- variable transmitting capacitors
give you no-arc wide range impedance
matching for true high power performance.
6:1 vernier reduction drives makes
capacitor tuning smooth and easy.
Super Balun, 6 position Antenna Switch
Super heavy duty three core choke
balun lets you match virtually any balanced
feedline antenna without core saturation.
A 6 position antenna switch lets you
select your desired operating antenna.
Read true Peak Power
Ameritron’s active electronic true peak
reading meter accurately reads forward and
reflected power and SWR simultaneously
on a super-bright LED lighted Cross-
Needle meter.
Roomy Cabinet maintains High-Q
Roomy extra-strong .080 inch thick alu-
minum cabinet gives highest efficiency and
lowest loss. 13
1
/
4
Wx5
5
/
8
Hx17
1
/
2
D inches.
Legendary After-Sale Service
Has Ameritron’s superb one year limited
warranty with legendary customer service.
ATR-30
$
599
95
Suggested Retail
AMERITRON’s
2500 Watt fan
cooled dummy
load handles
any legal
limit
amplifier,
and lets
you tune-up
your expensive
amplifier fast and
super easy.
Works with all
amplifiers, transceivers
and transmitters from
DC through 6 Meters.
It can dissipate 2500 Watts average
power for one minute on, ten minutes off.
Handles 300 Watts continuous. SWR is
less than 1.25 to 1 below 30 MHz and less
than 1.4 from 30 to 60 MHz.
Four 50 Ohm non-inductive super high
energy density resistors are used. Each has
an incredibly high energy density of 7000
joules per cubic inch per second with a
voltage gradient of 10 kV per inch!
Detailed specifications and power curve
are permanently silk-screened on the
bronzed cabinet for easy reference. Uses
12 VDC. Measures 9
1
/2Dx8
1
/4Wx4H inch-
es. Has SO-239 connectors. 5 pounds.
ADL-2500
$
219
95
Suggested Retail
AMERITRON’s
Legal Limit oil
filled dummy
load lets you run
the maximum
legal limit of
1500 Watts for a
full five minutes.
ADL-1500 has
high quality
industrial grade
transformer oil
(no PCB) and
heavy duty 50 Ohm resis-
tor.
AMERITRON’s
Legal Limit oil filled
dummy load gives you
SWR under 1.2 to 30
mHz and low SWR to 400
MHz.
Durable, sturdy gallon
can measures 7
1
/
2
Hx6
5
/
8
D inches. Detailed
specifications and power curve.
Order ADL-1500 with industrial grade
transformer oil. Order ADL-1500X with-
out oil.
ADL-21, $29.95. 1 Gallon Industrial
Grade Transformer oil.
ADL-1500X
$
54
95
Without Oil.
ADL-1500
$
74
95
Oil included.
Suggested Retail
Fan Cooled
Dry Dummy Load
Legal Limit Oil-filled
Dummy Load
ATR-20 Antenna Tuner . . .
ATR-20, $459.95. Handles 1.2
kW PEP SSB. Slightly less on 160
Meters. 13
1
/
2
Wx5
1
/
2
H x13
1
/
4
D inches.
Roller inductor T-network, peak reading
SWR/Wattmeter with super-bright LED,
covers 1.8-30 MHz, 6 position antenna
switch, balun. Great for Ameritron’s widely
popular one killowatt AL-80B Amplifier!
Precision Single Needle
SWR/Wattmeters
These precision,
compact meters feature
peak and average, for-
ward and reflected
power reading and SWR. Each model has
different selectable power ranges. A highly
visible black and red meter scale on a
bright, white background makes it quick
and easy to read SWR, Forward or
Reflected power at-a-glance. Large
2
5
/8x1
1
/4” lighted meter Lamp requires
13.8 VDC or 110 VAC operation. SO-239
connectors with gold-plated center pins, all
metal cabinet with rubber feet. Compact
6Wx2
1
/2H x4D inches.
Choose from 4 models.
Model
AWM-20
AWM-22
AWM-24
Power
kW
200 W
200 W
Pwr Ranges
20/300/3kW
5/20/200W
5/20/200W
Frequency
1.6-60 MHz
1.8-200 MHz
1.8-525 MHz
Price
$
89
95
$
89
95
$
119
95
AWM-20
$
89
95
Suggested Retail
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