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ATR-20

TUNER, ROLLER, 1500W

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ATR-20
$ 459.95 Each


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The ATR-20 is the little brother of the Ameritron ATR-30 True Legal Limit antenna tuner! Its Ameritron Tough -- handles a full 1.2 kW SSB and 600 Watts CW. Its designed to safely handle the full SSB power of Ameritrons AL-811, AL-811H, AL-80B, ALS-500M, ALS-600 and other 1.2 kW SSB amplifiers. Compact all metal cabinet measures 13W x 4 3/4H x 17D inches.


The ATR-20s roller inductor (gear driven with turns counter and crank knob) "T" matching network continuously tunes all frequencies from 1.8 through 30 MHz. Both tuning capacitors have vernier reduction gear drives for smooth precise tuning.


Features an accurate built-in 3 kilowatt true peak or average detecting directional power meter. Peak and average forward power, reflected power, and SWR are displayed on an illuminated cross-needle meter. Legends will never wear off -- scratch-proof Lexan front panel.

The ATR-20 has rear panel connectors for coaxial wire and balanced feedlines. A heavy duty, high voltage insulated, current type balun allows use with balanced feedlines.


Properly tuned, the ATR-20 safely operates on all bands with RF powerlevels of 1.2 kilowatts SSB and 600 Watts CW with load impedances from 5-800 Ohms. Matching range extends from 1 to 2500 Ohms (5 to 500 Ohms on 160 Meters) at reduced power.


An internal six position antenna selector switch selects three coaxial line outputs, or a single wire line/balanced line output. Two coaxial line outputs, Antenna 1 and 2 are available in either "tuned:" (with tuners matching network in line) or "direct"(no matching circuit) configurations. Coaxial output port Antenna 3 is direct only.



ATR-20 PARTS LIST
Item IDDescriptionPrice
10-01003TOROID, PRE-WOUND, #61 FOR DLP1.72
10-ATR20-1SA, BALUN ASSEMBLY, ATR2032.10
10-ATR30-2SA, BATTERY COVER ASSEMBLY, ATR-302.69
100-1470RESISTOR, 1/4W, F, 5%, 47 OHM0.10
100-2470RESISTOR, 1/4 WF, 5%, 470 OHM0.10
100-4100RESISTOR, CF, 1/4W, 5%, 10 K0.10
100-4220RESISTOR, CF, 1/4W, 5%, 22 K0.10
100-4330RESISTOR, 1/4 WATT, 5%, FILM, 33K0.10
100-4680RESISTOR, 1/4 WATT, 5%, FILM, 68K0.10
100-4820RESISTOR, 1/4 WATT, 5%, FILM, 8.2 K0.10
100-5100RESISTOR, CF, 1/4W, 5%, 100 K0.10
100-5150RESISTOR, CF, 1/4W, 5%, 150 K0.10
100-6100RESISTOR, CF, 1/4 W, 5%, 1 M0.10
104-1680RESISTOR, MO, 2W, 5%, 68 OHM0.20
133-4100BRESISTOR, TRIMPOT , SUB-HORZ, 10K0.58
133-4250BRESISTOR, TRIMPOT, SUB-HORZ, 25K0.92
133-4500BRESISTOR, TRIMPOT , SUB-HORZ, 50K0.92
200-0015-3CAPACITOR, DISC, 3KV, , 15 PF0.48
200-0150-2CAPACITOR, DISC, 1 KV, 20%, 150 PF0.10
200-1100CAPACITOR, DISC, 50V, 20%, Z5U, .001 UF0.10
200-2100-1CAPACITPR, DISC, Z5U, 100V, .01 UF0.10
270-5100-1CAPACITOR, ELECTROLYTIC, RADIAL, 25V, 10 UF0.16
270-6100-1CAP, ELEC, RL, 25V, 100 UF0.16
270-6220-1CAPACITOR,ELE RAD, 25/35V,220UF(51821525)(540451100.33
272-3470-2CAP, TAN, 50 V, .47 UF0.92
280-5012CAPACITOR, TRIMMER, 500V, 5-12 PF, ROUND12.88
282-2008-1CAPACITOR, AIR, VARIABLE, 250PF, ATR-20/98984.95
300-4007DIODE, DO-41, 1A, 1000V, 1N40070.10
302-0270DIODE, 1N2701.36
305-0013TRANSISTOR, NPN, DARLINGTON, 30V, MPS A130.14
305-3904TRANSISTOR, NPN, TO-92, 2N39040.15
305-3906TRANSISTOR, PNP, TO-92, 2N39060.15
324-0324IC, OP-AMP, 14, PIN,M LM324N0.48
355-3201LAMP, LED METER, SM X-METER3.99
401-6100INDUCTOR, MOLDED, .3, 10%, BRN-BLK-RED, 1000 UH0.44
404-1052ROLLER, AIR, 33 UH, ART-20/98959.00
420-6138IT, TOROID, FERRITE, #61, 2-1/2 (350866)22.88
500-2027SWITCH, 1500 ANT SWITCH77.76
504-0022SWITCH, PB, LOCK, PCB, 2P2P0.56
601-6021CONNECTOR, COAXIAL, PCB, 2.1MM0.24
601-6121WJACK, COAXIAL, DC, CH. MT, 2.1 MM0.70
606-1006-1LLT, CERAMIC POST, (LARGE) OUTSIDE, GLAZED0.76
606-1006-2LLT, CERAMIC POST, (SMALL-INSIDE) GLAZED0.76
610-2005TIT, UHF, 4H CH. MT, SO-239, TEF,1004252.09
625-0014SOCKET, IC, 14 PIN .3, LP (53041300)0.23
652-0187SSCREW, PAN, PH, 2-56-3/16, SS0.10
654-0187SCREW, PAN, PH, 4-40X3/16, ZINC0.10
654-0250-CPSCREW, CS, PH, 4-40 X 1/4 ZINC, FLAT0.10
654-0250SSCREW, ME, PAN, PH, 4-40 X 1/4, SS0.10
654-0375SCREW, ME, PAN, PH, 4-40 X 3/8, ZINC0.10
654-0500-CPSCREW, PH, CS, 4040X1/2, ZINC0.10
656-0250SCREW, ME, PAN, PHIL, 6-32 X 1/4, ZINC0.12
656-0250BSCREW, ME, PAN, PHIL, 6-32 X 1/4, BLACK0.12
656-0375SCREW, ME, PAN, PH, 6-32 X 3/8, ZINC0.10
656S-0250-ASCREW, SM, PH, #6 X 1/4, TYPE A, ZINC0.10
656S-0375B-ASCREW, SM, HEX, A, #6 X 3/8, BK0.10
658-0375SSCREW, PAN, PH, 8-32-3/8, SS0.10
660-0187S-SASCREW, SET, SOCKET, 10-32 X 3/16, SS0.11
660-0750RSCREW, PHILLIPS, 10-32X3/4, BRASS0.35
660-2000SCREW, ME, RD, SL, 10-32 X 2, ZINC0.32
662-3000-HHSCREW, MACHINE, HEX, 1/4-20 X 3, ZINC0.60
674-0006SCREW, MATRIC, PHILLIPS, M3X6MM, ZINC0.10
705-0440-KNUT, KEP, 4-40, ZINC0.10
705-1032-1NUT, HEX, SHOULDER, 10-32, ZINC0.19
705-1032SNUT, HEX, 10-32, SS0.10
705-1032S-WNUT, WING, 10-32, FORGED, SS0.50
705-2520NUT, HEX, 1/4-20, ZINC0.21
710-1050RWASHER, BRASS, FLAT, #10 X .5 X .032 TH0.16
710-31125SWASHER, STL,FENDER, .312IDX1.25ODX.062TH, SS0.34
711-0425SWASHER, LOCK, INT., #4, SS0.10
711-0627WASHER, LOCK, INT, #6, ZINC0.10
711-2537-SLWASHER, LOCK, SPLIT, 1/4, ZINC0.10
714-25300WASHER, .250 ID X 3 OD X .125TH1.40
714-4175WASHER, KRAFTPAPER, FLAT, .415ID X.75OD X.020.10
715-1725-0156SPACER, AL, #8 X .1560.54
716B-0250SPACER, AL, 1/4 HEX, 4-40, .250L0.27
716C-0875SPACER, AL, 1/4 HEX, 6-32 X 7/8 L0.34
718D-1000SPACER, NYLON, 8-32 X 1, DELRIN2.30
718D-1500SPACER, NYLON, 8-32 X 1.5004.99
720E-0785FLUG, SOLDER, FLAT, #10 X 7/8L TIN0.32
720E-0821LLUG, SOLDER, LOCK, ANGLE, #10 X 53/64L, TIN0.40
725-2100SHAFT, AL, 1/4 RD, 1-END FLAT, 10 L, 811/ATR302.15
725-3105COUPLER, SHAFT, FOR 1/4 DIA1.12
725-4105EYELET, BLACK, FOR BATTERY HOLDER0.10
726-0230POINTER, AL, RED, ATR-301.00
726-0230RPOINTER, RED, 1, ATR-300.93
730-2001BATTERY, HOLDER, HORZ., 9-V0.26
730-3005BATTERY, SNAP, 9V, 80.14
735-1278BRACKET, ANTENNA SWITCH, ATR301.00
735-2420BRACKET, COUNTER, ATR201.80
735-2500BRACKET, METER TAB, 80B0.20
738-0224PLATE, BATTERY COVER PLATE, ATR-30/9691.40
740-2102BUSHING, PLASTIC, 1/4 SHAFT0.10
740-6600BUSHING, SHAFT, METAL WITH NUT1.96
745-2149TIE, CABLE, NYLON,4 L0.10
755-3259FUSE, CLIP, PCB, FOR 1/4 FUSE (755-30710.20
760-0020KNOB, PB, RECT, BLACK0.80
760-0022KNOB, PB, RECT, RED0.80
760-0125KNOB, 1-1/2, AL84/ATR15/ATR30, 1653-3L W/LINE2.80
760-0551KNOB, 1-1/4 BAR, 84/ATR30/20, 1750-3L-BB8.64
760-2409KNOB, CRANK KNOB, ROLLER1.99
770-1162BUMPER, RUBBER, ROUND, .44 DIA., 20 H, BLACK0.10
780-3169COUNTER, TURN COUNTER, TUNER2.21
780-6152GEAR, NYLON, .50OD X .102ID X 32 PITCH1.19
780-6154GEAR, NYLON, 2.313OD X .250 ID X 32 PITCH1.69
782-ATR20DECAL, ATR-20, R1, FRONT PANEL12.44
800-1020CABINET, CHASSIS, ATR-2060.00
800-2020CABINET, FACE PLATE, ATR-2010.00
800-5020CABINET, COVER, ATR-2038.00
850-0657SH.BOX, WH 200#,RSC, 22-3/8X20X15, STI, OUTSIDE5.73
850-4745DC PAD, R5, BN 200#, 14-5/8X22-5/8, 12/15/821.52


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