{"product_id":"al-811hd","title":"AL-811HD, HFAMP, 800W, (4)572BTUBES, US120VAC","description":"\u003cp\u003e\u003cb\u003eGet the AL-811HD with 572B tubes\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eAL-811HD gives you the AL-811H with four 572B tubes installed. Get a higher power tank circuit and grid overload protection. Grid Overload Protection protects the tubes from excessive grid current due to mistuning and it protects against excessive drive power. Four 572B tubes give you more plate dissipation than a single 3-500Z tube. AL-811HD gives you 800 Watts output in SSB and 600 Watts for continuous duty in CW, RTTY, SSTVand AM operation.\u003c\/p\u003e\n\u003cp\u003eAMERITRON mounts the 572B tubes vertically, not horizontally, to prevent hot tube elements from sagging and shorting out. Others, using potentially damaging horizontal mounting, require hard-to-find 572B tubes to retard harmful sagging and shorting.\u003c\/p\u003e\n\u003cp\u003ePowerful 20 CFM computer grade fan, not an open frame phonograph motor, draws in cool air to pressurize the cabinet and efficiently cool your tubes for an extra long life.\u003c\/p\u003e\n\u003cp\u003eYou also get efficient full-size heavy duty tank coils, computer grade capacitors, heavy duty high silicon core power transformer, slug tuned input coils, operate\/standby switch, transmit LED, ALC, dual meters, QSK compatibility with QSK-5 option and much more!\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eSPECIFICATIONS:\u003c\/b\u003e \u003cb\u003e• \u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eOutput power:\u003c\/b\u003e 800 Watts PEP, 600 Watts CW. \u003cb\u003e• \u003c\/b\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eAll Band Operation:\u003c\/b\u003e Covers 160-15 Meters including WARC bands. Can be user modified for12 and 10 Meters. \u003cb\u003e• \u003c\/b\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eVertical Tube Mounting:\u003c\/b\u003e Prevents shorting of tube filament\/grid, prolongs tube life. \u003cb\u003e• \u003c\/b\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eFully Neutralized:\u003c\/b\u003e Improves stability and performance on higher bands. \u003cb\u003e•\u003c\/b\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e Input Tune Circuit:\u003c\/b\u003e Adjustable rear panel slug tuned input circuit. \u003cb\u003e• \u003c\/b\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eALC Control:\u003c\/b\u003e Built-in adjustable ALC control. \u003cb\u003e•\u003c\/b\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e Vernier Reduction Drives:\u003c\/b\u003e Tuning and loading reduction drives make tuning smooth and easy. \u003cb\u003e• \u003c\/b\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eDual Illuminated Meters:\u003c\/b\u003e Monitor vital operating functions. \u003cb\u003e• \u003c\/b\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eHeavy Duty Power Supply:\u003c\/b\u003e 17 pounds, high silicone steel core transformer and computer grade filter capacitor gives 1700 Volts high voltage at no load and 1500 Volts at full load. Multi-Voltage Operation: User selectable for 100\/110\/120\/210\/220\/230 VAC operation. Shipped with transformer installed and wired for 120 VAC for domestic model or 240 VAC for export model. \u003cb\u003e• \u003c\/b\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eAir-Cooled:\u003c\/b\u003e Quiet pressurized ventilation keeps tubes safely cooled. QSK Compatible: Optional external electronic pin diode Transmit\/Receive switch. \u003cb\u003e• \u003c\/b\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eAttractive Lexan front decal\u003c\/b\u003e \u003cb\u003e• \u003c\/b\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eOne Year AMERITRON warranty.\u003c\/b\u003e \u003cb\u003e• \u003c\/b\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eDimensions:\u003c\/b\u003e 8 ¼\" x 13 ¾\" x 15 ½\". \u003cb\u003e• \u003c\/b\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eOperating Weight:\u003c\/b\u003e 32 lbs. \u003cb\u003e• \u003c\/b\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003eMade in USA\u003c\/b\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eProduct Manuals\u003c\/h3\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0289\/7782\/3843\/files\/AL-811HD.pdf?v=1586534048\"\u003e\u003cb\u003eDownload Product Manual\u003c\/b\u003e\u003c\/a\u003e","brand":"Ameritron","offers":[{"title":"Default Title","offer_id":43367623262271,"sku":null,"price":1799.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/1233\/9519\/files\/AL-811HD.jpg?v=1780945607","url":"https:\/\/hy-gain.com\/products\/al-811hd","provider":"hy-gain","version":"1.0","type":"link"}