Ameritron AL-811 600W HF Linear Amplifier
Ameritron AL-811 600W HF Linear Amplifier. Ameritron Al-811 linear amplifier gives you plenty power to bust thru QRM. The AL-811 will operate with full output on all WARC bands except 24.5 MHz. You get a quiet desktop linear that's so compact it'll slide right into your station -- you'll hardly know it's there... 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.
You'll 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. 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. There's 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. How the low cost 811A tube resists premature failure -- even when your amplifier is mistuned. First they're 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. That's 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.
This makes your components last longer and gives you peak performance -- regardless of your line voltage. For lightning fast QSK operation, use the optional external QSK-5, electronic PIN diode switch. 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.
- Brand: Ameritron
- Model: AL-811
- Frequency Band(s): HF
- MPN: AL-811