This link is listed in our web site directory since wednesday apr 20 2011, and till today ameritron al 811h manual has been followed for a total of 17 times. You get absolute stability and superb performance on higher bands that cant be matched by unneutralized tubes. Hi i got this amp a few months ago i upgraded my license so can now use an vk a 400w limit i had an ldg at600 proii tuner so didnt want a bigger amp. Supplemental tuning instructions 1005 2011 trouble shooting al811. Al 811h eham article 15783 comment by wa4dou 20m results 45 610 implied by input power 125 590 cw best case ameritron any reuse or redistribution of the contents of this website are strictly forbidden without authorization from ameritron. Extra heavy duty power supply gives you peak performance year after year. And the tubes are so inexpensive that you can replace one for mere pocket change. Ive recently unmothballed my ameritron which has seen good service and delivers 200 watts for 10w drive ideal for psk31 and other lowpower digital modes. Ameritrons al1500 will give it to you al82 amplifier. Amateur amplifiers the ameritron al811 linear amplifier gives you plenty power to bust thru qrm. You get a quiet desktop linear that is so compact it will slide right into your station you will hardly know it is. The ftdx 1200 is used as the exciter for an ameritron al 811h linear amplifier running four fully neutralized 811a transmitting tubes that is capable of providing a maximum power of 800 watts pep and 600 watts cw output on the 16015 meter bands including warc bands.
This notice includes the instructions for upgrades, circuits descriptions with diagrams, color photos, schematic diagram, part lists and connections. The pedal key the ameritron few milisecond before it key the radio, this also permit the use of the tune button on the flex without keying the amp. View online instruction manual for ameritron al811h amplifier or simply click download button to examine the ameritron al811h guidelines offline on your desktop or laptop computer. For mine, i use the heil fs2 for the exact same setup, there is 2 wire on the pedal, 1 for the amp, 1 for the radio. Getting to any component is a complete pain, one has to take the back panel off and release enough of the wiring on the large double sised pcb to get aught e. Ameritron diagrams, schematics and service manuals download for free. Al 811hd gives you 800 watts output in ssb and 600 watts for continuous duty in cw, rtty, sstvand am operation. Next channel up, strongest peak is about 34 db compared directly to voice channel median power level.
We have 1 ameritron alh manual available for free pdf download. It lets you use your linear amplifier for high power qsk cw, for packet, amtor and any mode requiring extremely fast switching between transmit and receive. If you are rewiring the al811h for 240230220v operation, you must use 8 ampere fuses. Their high power vacuum tube linear amplifiers and solid state no tune amplifiers will take your hf operations to the next level.
I removed the top cover and found one tube was not lit. Rca sockets are located on the back panel of the al811h. I have connected the relay and alc connections to my rig and the amplifer works great except for the alc protection. About ameritron al 811h manual the resource is currently listed in in a single category. Discussion in amateur radio amplifiers started by kj4aqu, apr 12, 2012. Since the schematic supplied by the manufacturer is essentially unuseable, i decided to make a project of documenting both units. Ameritron hf power amplifiers al811h free shipping on most. View and download ameritron al80b instruction manual online. Lapparecchio lo puoi accordare alla potenza che vuoi. Linear amp tuneup ameritron al811h linear amplifier.
I run the same amp for more than a year with the orginal valves up to 550 w but never. Ameritron al811x 800w tuning tips dx commander amateur. The keying circuit in the al811h has a positive 12 vdc open circuit and it provides 100ma of current when connected to ground. Page 1 hf power linear amplifier instruction manual the ameritron al811h is an economical 800 watt pep output linear amplifier that operates reliably from 160 through15 meters. Al 811h service pdf the alh is a grounded grid linear amplifier developed by ameritron using low cost a power triodes. Read the manual to become familiar with the operation of the al811h amplifier. The main category is ameritron al 811 and al 811h hf amateur radio rf power amplifier that is about ameritron al 811 and al 811h resources.
Four 572b tubes give you more plate dissipation than a single 3500z tube. My takeaway from these is to limit am output power from the 3tube al 811 to 65 watts average power and 85 watts average power from the 4tube al 811h using ccs ratings for am operation and a safety factor for the tubes. Just obtained this and was wondering if this amp too, like the sb200 should have a glitch resistor added. When an 811a or any tubein a hf amp oscillates at vhf, the hf tank offers no load to the vhf energy produced. Place the amplifier on a firm, level surface and carefully inspect it for shipping damage. Only the ameritron al811h gives you four fully neutralized 811a transmitting tubes. This is tuning the al811h amplifier by burt fisher on vimeo, the home for high quality videos and the people who love them. Arb704 interface cabling modification 20141206 vk2byi i decided to use an ameritron arb704 relay buffer to isolate and protect the tx gnd transmit ground signal from the ftdx 1200 exciter to key my al 811h linear amplifier via the relay input. Ameritron mounts the 572b tubes vertically, not horizontally, to prevent hot tube elements from sagging and shorting out. Amateur amplifiers the ameritron al 811 linear amplifier gives you plenty power to bust thru qrm.
I have a question for anyone who owns an ameritron al811. The ameritron al82 linear amplifier is designed to give you years of trouble free service at the full legal output power limit al82x. I am trying to get my al811h connected to the flex 6500 however not able to get the radio to key the amp. I have a question for anyone who owns an ameritron al 811 amplifier. The al 811h is sold worldwide and is quite a wellbuilt budget amplifier, but by no means easy to repair. The al811h has an internal backpulse canceling diode across the relay coil. Tof tuning aid for amplifiers 811a tube history and construction business page link parts and circuit boards ctr engineering, inc please take time to read.
Free ameritron diagrams, schematics, service manuals. I have a question for anyone who owns an ameritron al811 amplifier. The maximum power output is 1500 watts pep with some exceptions, based on band and license class. Reproduction of the complete original factory manual for the ameritron al811h linear amplifier. Jul 07, 2009 there is no stopping k1oik burt fisher check out his video on tuning up the ameritron al 811h linear amp if you want to see the inside of the al 811h check out our posting below. Ameritron al811h amplifier instruction manual pdf view. Dec 23, 2008 i own two ameritron al 811h amplifiers, an old one and a new one. Carefully lift the amplifier by the bottom cabinet edge out of the shipping carton. Therefore, i turned my attention to the required interface cabling. Rca or cetron 811a tubes those power outputs might be safely increased. The main category is ameritron al811 and al811h hf amateur radio rf power amplifier that is about ameritron al811 and al811h resources. About ameritron al811 manual the resource is currently listed in in 2 categories. The plate current should be limited to 400ma maximum.
The ameritron al 811 is excellent for the newcomer because its tough enough to withstand momentary mistuning. Ameritron al811hx 800 watts amplifier 10160 radioworld. I have confirmed for 100% certain the radio is connected correctly. Al811hd ameritron al811hd 800watt linear 4 572b tubes. You get a quiet desktop linear that is so compact it will slide right into your station you will hardly know it is there. While surfing the net killing time i stumbled onto a repair for the al811h amp. To dig in the amplifier almost everything has to be deinstalled. Contact the shipper immediately if any damage exists. There is no stopping k1oik burt fisher check out his video on tuning up the ameritron al811h linear amp if you want to see the inside of the al811h check out our posting below. Al811hd gives you 800 watts output in ssb and 600 watts for continuous duty in cw, rtty, sstvand am operation. While surfing the net killing time i stumbled onto a repair for the al 811h amp.
In this page you find schematic, users and instructions manuals, service manuals, technical supplement, leaf leads and other good stuff. When attempting to adjust the alc limit on the rear of the amplifier as. Manuals for ameritron this is the manuals page for ameritron. The al 811h uses four 811a tubes in a class ab2 grounded grid circuit.
Go to the product page and click on the product manuals tab. Al811h eham article 15783 comment by wa4dou 20m results 45 610 implied by input power 125 590 cw best case al811h, highest peak power, in sidebands with normal voice modulation at 700 watts pep with fresh tubes on worse band, ten meters. Click on the picture to see a bigger picture and if entered the extra description. The fellow posting the repair stated that when keying this amp there should be no current showing on the grid meter no power from exciter just using radio to key amp. I also have an ldg atproii autotuner which has a one button manual tuning feature that i wanted to utilize in addition to the full and semiautomatic tuning abilities. About ameritron al 811 manual the resource is currently listed in in 2 categories.
Heavy duty power supply and rf components provide long service for components. The main category is ameritron al 811h that is about 16010 meter rf amplifier. Ameritron 10 meter mods pdf 1012 meter modification instructions. The ameritron ari500 amplifier radio interface reads band data from your icom, yaesu, kenwood or alinco transceiver so they can remotely and automatically bandswitch your als500m amp. I own two ameritron al811h amplifiers, an old one and a new one.
This means both the ftdx 1200 and the al811h can be run at drive levels well within their specified output power limits. If you want an amp for ssb, its really hard to beat this one. You really should be reading the manual 811h pdf pages. Al811h, highest peak power, in sidebands with normal voice modulation at 700 watts pep with fresh tubes on worse band, ten meters.