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 Item Details  
HF AMP, 600W, (3) 811A TUBES Item Name:
HF AMP, 600W, (3) 811A TUBES
Item #:
AL-811
Price/ea:
$799.00  $719.00

Ameritron Al-811 linear amplifier gives you plenty power to bust thru QRM.

You get a quiet desktop linear thats so compact itll slide right into your station -- youll hardly know its there ... until QRM sets in. Conveniently plug it into your nearest 120 VAC outlet -- no special wiring needed. Three tough 811A transmitting tubes, extra heavy duty power supply, all HF band coverage, pressurized ventilation, tuned input, dual illuminated meters, adjustable ALC & more.



The first 600 watts make the difference

The Al-811 gives you 600 watts PEP output -- thats nearly 2 full S-units over your barefoot rig. That could mean the difference between hearing, "Youre Q-5 armchair copy" and, "Sorry cant copy you, too much QRM." Now you wont have to stand aside while the "big guns" steal your DX. Youll be able to log some of those stations first. Going from 600 watts to the full legal limit gives you less than one S-unit increase. But is that fraction of an S-unit worth the 3 or 4 times more money itll cost you? AL-811 gives you a powerful punch at a price thats easy on your wallet.



All band, All mode coverage

The AL-811 covers all HF bands. Theres no compromise on WARC and most MARS bands -- you get 100% rated output. You can operate the AL-811 on all modes. Get 600 watts output PEP SSB and 500 watts output CW. You even get 400 watts on demanding continuous modes like RTTY, SSTV, FM and AM.



How the low cost 811A tube resists premature failure -- even when your amplifier is mistuned

First theyre constructed with widely spaced elements that minimize the chance of touching and causing a short -- even if the plate gets hot enough to melt. Second they use a directly heated thoriated tungsten filament cathode that prevents the electron emitting layer from instantly stripping off -- even if mistuning causes a sudden, sever current overload. The Ameritron AL-811 is excellent for the newcomer because its tough enough to withstand momentary mistuning. And the tubes are so inexpensive that you can replace one for mere pocket change.



The Ameritron advantage: Extra heavy duty power supply gives you peak performance year after year
The heart of the AL-811 power supply is its heavy duty power transformer with high silicon steel core weighing a hefty 17 pounds. A full wave bridge using 52.5 ufd of total capacitance (four 210 ufd, 470 volt capacitors) produces 1500 volts under full load and 1700 volts no load. Thats excellent high voltage regulation! Full height computer grade filter capacitors with screw terminals are used -- not short stubby. light duty soldered-in "high technology" capacitors that cant dissipate the heat generated by high current.
Rectifier diodes are rated for a massive surge current of 200 amps. They wont blow even if you accidentally short the high voltage supply. Wire wound, 7 watt, 50 K ohm equalizing resistors safely protect each filter capacitor -- not 2 watt, 100 K ohm carbon composition resistors that can open and cause your filter capacitors to explode or fail. The Ameritron AL-811 power supply is built tough so you get peak performance year after year.



Tuned input provides excellent load for any rig

A Pi-Network tuned input provides a 50 ohm load for your rig. Even fussy solid state rigs can deliver their full drive to AL-811. Low loss slug tuned coils -- tunable from the rear panel -- let you optimize performance. High quality low drift silver mica capacitors maintain proper tuning.



Output tank: optimum Q on each band

the low loss pi-network output tank of the AL-811 has been carefully designated for optimum Q on each band and built with quality RF components. The result is peak performance over each band, wide impedance matching range and exceptionally smooth tuning with efficiencies close to 70%. Even a 3:1 SWR load wont damage the tubes or tank components. A ball bearing vernier reduction drive makes plate tuning precise and easy.



Quiet pressurized ventilation keeps your tubes safely cooled

A quiet blower pressurizes the cabinet with a large volume of air flow. It keeps the 811A tube temperature well below the tube manufacturers rating -- even with a key down carrier at 400 watts output -- without the overwhelming noise of oversized fans.



Two illuminated meters

Two illuminated meters give you a clear picture of your AL-811 operating conditions so you can tell right away if something is wrong. the Grid Current meter continuously check for improper loading. The other meter switches between high voltage and plate current to warn of abnormal conditions.



Ameritron exclusive Adapt-A-Volt power transformer

Too high line voltage stresses components and causes them to wear out and fail. Too low line voltage causes a "soft-tube" effect -- low output and signal distortion. Ameritrons exclusive Adapt-A-Volt power transformer has a special buck-boost winding that lets you compensate for stressful high line voltage and performance robbing low line voltage. This makes your components last longer and gives you peak performance -- regardless of your line voltage.



QSK Compatible

For lightning fast QSK operation, use the optional external QSK-5, electronic PIN diode switch.



Plus More...

An Operate/Standby switch lets you run barefoot, but you can instantly switch to full power if needed.

A transmit LED tells you when your rig is keying your AL-811.

A 12 VDC keying relay makes it compatible with solid state and tube rigs. Built-in back-pulse canceling diode protects your rigs keying circuit.

Shielded RF compartment. One year limited warranty. UPS shippable. Shipped with transformer installed and wired for 120 VAC. Draws 8 amps at 120 VAC.



Made in USA

Made in the USA. At Ameritron, we dont just ship amplifiers we build them to last!


AL-811 PARTS LIST
Item ID Description Price
10-10200 SA, LED, WITH RESISTOR 1.60
10-13108 SA, COIL, 8AWG FOR HF TANK COIL 89.24
10-13303 SA, PREP HF COIL 811 24.28
10-13305 SA, PREP LF COIL, 811 13.61
10-13305H SA, PREP LF COIL, 811H 13.61
10-14194 SA, TOROID, NEUT. XFORM, AL1200 26.72
10-15115 SA, WIND FILAMENT CHOKE, AL80A/12/15/82 15.60
10-15168 SA, CHOKE, COIL 2.36
10-15197 SA, CHOKE, PLATE, ALL AMPLIFIERS 21.23
10-60300 SA, A/C LINE FILTER, CUP ASSSEMBLY, 811CE 14.02
10-60310 SA, PREP BACK PANEL, 811 160.29
10-60310-1HCE SA, BACK PANEL ASBLY, 811H, CE 176.29
10-60310CE SA, PREP BACK PANEL, CE, 811 156.33
10-60310H SA, PREP BACK PANEL, AL-811H 166.53
10-60310HCE SA, PREP BACK PANEL, CE, 811H 168.98
10-60312H SA, SUB FRONT ASSBLY AL811H 59.40
10-60314 SA, DECALED FACE PLATE, 811 24.18
10-60314-1 SA, PREP 811 FACE PLATE 36.18
10-60314-1H SA, FRONT PANEL ASBLY, AL-811H 23.45
10-60314H SA, DECALED FACE PLATE, AL-811H 20.76
10-80811H SA, CHASSIS, TUBE, AL-811H 76.67
101-3470 RESISTOR, 1/2W C,5%, 4.7K 0.10
104-0060 LLT, RESISTOR, 3W, 1%, WW, TYPE 135 .6 OHM 1.56
104-0150 LLT, RESISTOR, 3W, 1%, WW, TYPE 135, 1.5 OHM 0.98
104-1510P LLT, RESISTOR, 3W, 5%, WW, TYPE 135 51 OHM 1.56
104-2100-1 LLT, RESISTOR, 3W, 5%, TYPE RSF, 100 OHM 0.57
104-6100 RESISTOR, 3W, 1%, GS-3,1M 0.55
107-4500-1 LLT, RESISTOR, 7W, 5%, 100 SERIES, TYPE 170S, 50K 1.26
11-01272 SA, FUSE/SCREW PACK, FOR TUBE AMPS 5.52
11-01272-1 SA, FUSE/SCREW PACK, AL811X/811HX, EXPORT 6.42
161-5100-1 RESISTOR, POT, 24MM, LINEAR, 1K 0.76
200-1100-7 LLT, CAP, DISC, 7.5 KV, .001 UF 2.88
200-2100-1 CAPACITPR, DISC, Z5U, 100V, .01 UF 0.10
200-2100-1B LLT, CAP., DISC, 250 VAC, .01 UF 0.72
200-2100-2B CAPACITOR, DISC, SPRAGUE, Z5U, 1 KV, .01 UF 1.02
200-3100 CAP, DISC, 25/50V, .1 UF 0.15
250-0027 CAP, SM, DM15, 500V, 27 PF 0.39
250-0068 CAP, SM, DM15, 500V, 68 PF 0.24
250-0100 CAP, SM,DM15, 500V, 100 PF 0.54
250-0150 CAPACITOR, SM, DM15, 500V, 150 PF 0.96
250-0270 CAP, SM, DM15, 500V, 270 PF 0.69
250-0330 CAPACITOR, SM, DM15, 500V, 330 PF 0.45
250-0500 CAP, SM,DM15, 500V, 500 PF 0.96
250-0750 CAP, SM, DM15, 500V, 750 PF 1.01
250-1130E CAP, SM, DM19, 500V, 1300 PF 1.17
252-0360 CAPACITOR, SNB, 1KV, 360 PF 2.27
252-0500 CAPACITOR, SNB, 1KV, 5%, 500 PF 3.29
270-6210-7 LLT, CAP, ELEC., RL, 470V, 270 UF 13.53
270-7220-1 CAP, ELEC, RL, 2200UF, 25V 1.17
282-2113 LLT, CAP, AIR VAR, AL84/811/811H, LOAD 29.16
282-2572-1 LLT, CAP, AIR VAR., PLATE, AL811/811H 48.52
300-4007 DIODE, 1A,1N4007, BULK 0.10
300-5408 DIODE, 1N5408, BULK 0.13
302-0270 DIODE, SCHOTTKY, CDSH270 0.27
305-3055J TRANSISTOR, NPN, TO-220FP ISOLATED,POWER, MJF-3055 1.59
351-5002 LED, RED, ROUND, 5MM, MV6753 0.16
380-0572B LLT, TUBE, 572B 49.95
380-0811A LLT, TUBE, 811A, FOR AL-811 24.95
400-2600A LLT, METER, GRID, 1MA, AL811/811H 14.10
400-2601A LLT, METER, PLATE V/I, 1 MA, AL-811/811H 14.10
401-6250-1 INDUCTOR, CHOKE, AL80A/12/15/82, 2.5 MH, 300MA 7.17
402-1605 COIL, AIR, 5/16ID, 16 AWG BUSS, 5-1/2 TURNS 0.75
404-0811 LLT, AIR COIL, #14, 1.75 D, 30 T, 10T/I, FOR 811 21.45
405-1047 LLT,COIL, INPUT, PCMT,PW, 4.75T 8.28
405-1067 LLT, COIL,INPUT, PCMT, PN, 6.75T 8.66
405-1097 LLT, COIL, INPUT, PCMT, PW, 9.75T 9.22
405-1137 LLT, COIL, INPUT, PCMT, PW, 13.75T 10.02
405-1237 LLT, COIL, INPUT, PCMT, PW, 23.75T 11.51
405-1287 LLT, COIL, INPUT, PCMT, PW, 28.75T 12.36
406-1532 LLT, TRANSFORMER, POWER, 811H/811 49.50
408-6114 RELAY, SPST, 12 VDC, 16A, AL12/15/82/MIR 3.24
408-6124 RELAY, DPDT, 12 VDC, 8A, AL12/15/82/MIR 3.00
410-4584 FAN, GUARD, METAL, 811/H, FOR 80X80 MM FAN 0.84
412-0109 LLT, ROD, FERRITE, #61, 1/2 DIA X 4 L 9.30
412-7308 BEAD, FERRITE, 2673-000801, #73 0.14
420-5010 FILTER, A/C EMI FILTER, 120/240VAC, 10A/10A 7.92
420-6138 LLT, TOROID, FERRITE, #61, 2.5 OD, .5 TH 12.27
50-0572-1 SA, PCB ASBLY, PARASITIC, 572 22.55
50-0811-1 SA, PCB ASBLY, PARASITIC, 811 20.04
500-2811 LLT, SWITCH, ROTARY, BAND SWITCH, AL-811 37.40
500-4811 LLT, SWITCH, WAFER, PC, AL-811/H 21.28
504-3247 SWITCH, INTERLOCK, SAFETY CHERRY 6.93
507-1151 SWITCH, ROCKER, 20A, 125V, BLACK, SPST 1.44
600-1003 JACK, PHONO, RCA, SINGLE, CH MT., HEX BASE 1.30
605-1194 TERMINAL, STRIP, 3 POS, 0.41
605-1379 TERMINAL, STRIP, 1 POS, KS-806 0.36
610-2005T CONNECTOR, SO-239, TEFLON 2.32
620-5128 LINE CORD, 16/3, SJT, 5-15P PLUG, 6, AL811/H 7.77
620-6130 LINE CORD, DETACHABLE, 18/3, SVT, 5-15P, 77, BK 2.49
625-8811 LLT, SOCKET, TUBE SOCKET FOR AL-811A 1.56
652-0187 SCREW, PAN, PH, 2-56-3/16, ZINC 0.25
654-0250-CP SCREW, CS, PH, 4-40 X 1/4 ZINC, FLAT 0.10
656-0125 SCREW, PAN,PH, 6-32X1/8, ZINC 0.10
656-0187S SCREW, PAN, PH, 6-32X3/16, SS 0.10
656-0312 SCREW, PAN,PH, 6-32X5/16, ZINC 0.10
656-0312B SCREW, PAN, PH, 6-32 X 5/16, BLACK 0.10
656-1500 SCREW, PAN, PH, 6-32 X 1-1/2, ZINC 0.10
658-0187 SCREW, PAN, PH, 8-32-3/16, ZINC 0.10
658-0750 SCREW, PAN, PH, 8-32-3/4 ZINC 0.10
658-1125 SCREW, PAN, PH, 8-32-1 1/8, ZINC 0.10
658-2000 SCREW, PAN,PH, 8-32X2, ZINC 0.10
660-0187-SA SCREW, SET, SOCKET, 10-32 X 3/16 0.10
660-0750R SCREW, PHILLIPS, 10-32X3/4, BRASS 0.17
662-0250-RS SCREW, ROUND HD, SLOT., 1/4-20 X 1/4, ZINC 0.13
662-0375-RS SCREW, ROUND HD, SLOT, 1/4-20 X 3/8, ZINC 0.10
662-0625-HS SCREW, HEX HEAD, SLOT, 1/4-20 X 5/8 ZINC. 0.13
705-0440-K NUT, HEX, KEP, 4-40-1/4, ZINC 0.10
705-0832-K NUT, KEP, 8-32,ZINC 0.10
705-1032-W NUT, WING, 10-32, FORGED 0.10
705-1032R NUT, BRASS, HEX, 10-32 0.10
705-2520 NUT, HEX, 1/4-20 X 7/16 0.10
710-1050R WASHER, BRASS, FLAT, #10 X .5 X .032 TH 0.10
710-2550R WASHER, METAL, FLAT, SAE, 1/4ID, 1/2OD, .045, BRAS 0.10
711-0425S WASHER, LOCK, INT., #4, SS 0.10
711-1037S-SL WASHER, LOCK, SPLIT, #10, SS 0.10
711-2537S WASHER, INT. 1/4, SS 0.10
714-0631 WASHER, FIBRE, FLAT, #6 X .312 X .032 TH 0.10
714-0837 WASHER, FIBRE, FLAT, #8 X .375 X .032 TH 0.10
714-25100N WASHER, VIVAK, .250 ID X 1 OD FOR PLATE CHOKE 0.75
715-1725-0312 SPACER, AL, #8 X .312 0.22
715-1725-0500 SPACER, AL, #8 X .5 0.23
715-1725-1500 SPACER, AL, #8 X 1.500 0.78
715-1725-4500 SPACER, AL, #8 X 4.5 2.22
715C-4500 SPACER, AL, 1/4RD, THREADED, 6-32 X 4.5 L 2.13
716B-0250 SPACER, AL, 4-40 X .25, 1/4 HEX 0.20
716B-0437-2 SPACER, AL, 3/16 HEX, 4-40 X .437 L, 0.32
716C-0875-MF SPACER, AL, 1/4 HEX, 6-32 X 7/8, M/F 0.58
718D-1000 SPACER, NYLON, 8-32 X 1 1.71
718D-2000 SPACER, NYLON, 8-32 X 2 2.45
719F-5500C LLT, SPACER, CERAMIC, 1 X 5.5 L, 1/4-20 TAP 14.85
720-2389 LLT, TERMINAL, CLAMP, PLATE CHOKE 1.10
720B-0563L LUG, SOLDER, LOCK, ANGLE, #4 X 9/16L 0.10
720C-0734LF LUG, SOLDER, LOCK, FLAT, #6 X 47/64 0.10
720C-0875F LUG, SOLDER, FLAT, #6 X .875 0.10
720D-0641L LUG, SOLDER, ANGLE, LOCK, #8 X 41/64 L, TIN 0.16
720D-0875F LUG, SOLDER, NO TOOTH, FLAT, #8 X 7/8, #141-169 0.25
720H-2000F LUG, SOLDER, FLAT, 3/8 X 2 L, TIN 0.27
721E-3778 TERMINAL CRIMP, #10 X .37 X .73, 10-12 AWG, N.INS 0.14
721F-1472 LUG, 1/4, RING, CLAMP-ON, UN-INSU., FOR PLATE CK 0.10
725-2100 SHAFT, AL, 1/4 RD, 1-END FLAT, 10 L, 811/ATR30 1.95
725-2115 SHAFT, 811 H, 11.5 LENGTH 2.64
725-3105 COUPLER, SHAFT, FOR 1/4 DIA 0.84
726-0227 POINTER, AL, ISSUE A 0.84
726-0227R POINTER, RED, 1-1/4, ISSUEA 1.02
729-0142 LLT, 6:1 VERNIER BALL DRIVE 12.75
735-2811 BRACKET, METER MOUNTING, AL811 1.20
735-2825 BRACKET, 811 CHASSIC SIDE BRACES 5.16
735-2827 BRACKET, 811H CHASSIC SIDE BRACES 5.16
735-2830 CABINET, SHIELD PLATE, AL-811 7.65
735-3811 BRACKET, BRASS, PLATE STRIP, 811 2.73
738-2820 PLATE, 811 BACK PANEL COVER PLAT 1.35
740-2102 BUSHING, PLASTIC, 1/4, ROUND SHAFT, 375-4 0.23
740-3215 BUSHING, A/C CORD RELIEF, RCS4/8 0.16
740-3269 BUSHING, A/C CORD RELIEF, AL12/15/82/80A/811, 0.10
745-2149 TIE, WIRE TIE WRAP 4 0.10
745-5142 CLAMP, CABLE, 1/4 #3304 0.10
745-5143 CLAMP, CABLE, 5/16, #3305 0.10
752-2301 LED, HOLDER, PLASTIC, SINGLE PIECE, FOR T1-3/4 LED 0.11
755-0108 FUSE, 1-1/4, FB, 250V, MTH-250V-8A 1.05
755-1112-1 FUSE, 1-1/4, FB, 12A, 250V, CERAMIC 1.14
755-2148 FUSE, HOLDER, 3AG WITH MOUNTING NUT 1.96
755-2148-1 FUSE, HOLDER CAP, FOR ROUND FUSE HOLDER 1.80
755-6811 LLT, CAP, TUBE CAP FOR AL-811A 0.78
760-0550 LLT, KNOB, 1-1/2 BAR, 80A/12/15/82, BAND SWITCH 3.24
760-2280-1 LLT, KNOB, 2, AL12/15/82/80A, 1649-1, NO LINE 1.45
760-2281-1 LLT, KNOB, 2, WITH LINE, AL811 1.64
765-2625 PLUG, HOLE, .625, METAL 0.96
765-9012T TUBING, TEFLON, TS250/12, NATURAL (STD WALL) 0.90
765-9275 TUBING, PVC, SHRINK, 3/4, 200/ SPOOL 1.14
770-1133 FEET, FOR ALL AMP 0.73
770-6179 GROMMET, RUBBER, #733 0.10
781-1002 LABEL, LETHAL VOLTAGE, 0.10
781-1811 LABEL, DECAL, FCC ID # AL-811 0.15
782-0811 CABINET, DECAL, AL-811 9.66
782-0811H AL-811H DECAL 8.13
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AMPLIFIER, W/PIN-5, ONE 3CX1500/8877
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