The modified schematic below shows where the new 47k resistor is. Depending on where in the ac power cycle the switch contact closure occurred, the amp sometimes turned on with a loud thump and the shorting relay engaged almost. I can from on the air operation recommend the al 811. It employs a single 3500z tube and is designed to produce up to a kilowatt of signal in ssb service on the ham bands. Al80b instruction manual introduction the ameritron al80b is an 800 watt cw, watt pep output linear amplifier that operates on all amateur bands from 160 through 15 meters. They feature a fastacting electronic circuit that rapidly disables the amp if excessive grid current conditions occur. Describe your experience with the ameritron al 80b and tell us why you give it the rating you did required.
This is the basis of ameritrons output rating of 1. W7tdc article on restoration of the al80a rf amplifier. Power line voltage in the usa is 120 or 240 nominal. The al 572 pipil output network gives you exceptionally smooth tuning, wide matching range, full band coverage and peak performance at all power levels. Ameritron al82 super legal limit hf amplifier w 2 x 3. Ball bearing vernier reduction drives on plate and load controls make tuning precise and easy. Ameritron al80b al811h al572 amplifier trouble shooting. Only the ameritron al811h gives you four fully neutralized 811a transmitting tubes. The al 80a 198412 on the al80a was not the same as the al80 above. Ameritron al80a sm service manual download, schematics. Ameritron hf power amplifiers al80b free shipping on. Ameritron al 80b amplifiers use a genuine 3500zg tubenot the cheaper, less reliable 3500 tubes used by some competitors. Ameritron amplifiers, buy new and used products from ham. Their high power vacuum tube linear amplifiers and solid state no tune amplifiers will take your hf operations to the next level.
Al 80b dynamic bias defeat if you listen closely to someone running the stock dynamic bias circuit you may hear a gritty first syllable or a mushy first cw note. If you have a choice run it on 240 volts instead of 120vac. Ameritron grid overload protectors gop100 free shipping. This link is listed in our web site directory since monday apr 17 2006, and till today ameritron al 80a modification has been followed for a total of 10615 times. Service manuals, schematics, eproms for electrical technicians. Other useful information would include your experience with similar products, infomation on a product that you would purchase instead of this one, and so on. You get absolute stability and superb performance on higher bands that cant be matched by unneutralized tubes. Describe your experience with the ameritron al80b and tell us why you give it the rating you did required. Will con free classifed ads used surplus electronics.
The ameritron al80a linear amplifier is designed for over watts output ssb pep 850 watts output on cw with high efficiency and total reliability. In the fall of 2009 i acquired an ameritron al 80b linear amplifier for my ham radio station. Ameritron al80a 1kw output, 16015, 10 possible with mod. Ameritron al 80a 1kw output, 16015, 10 possible with mod. Never test or operate a tube type amplifier with the cover off and hv active. Ameritron diagrams, schematics and service manuals download for free. By starting your al 80b through a 10 ohm current limiting resistor, then shorting the resistor with a relay, the al 80b gives you a start up sequence thats easy on your tube and power supply components. Ive had it for about 2 years and have traded up to a solid state amp.
Ameritron chose to use a 10 ohm, 10 watt, resistor in the al 80b s softstart circuit. This are the same manual use by experts and even technicians. Find ameritron hf power amplifiers al80b and get free standard. Only the ameritron al 811h gives you four fully neutralized 811a transmitting tubes. As for tuning the amp, the instructions are quite clear in the manual. I need the 1012 meter mod for ameritron al80b, does any know what i need to do. Last day ameritron als600 solid notune state hf amp. If i sign with one station usually one or more stations call me. Bell gpx enc tekk icom sony alinco drake cobra maxon vertex conair uniden jenson ranger midland whistler magnum unwired coleman. The al 80bx and al 80by are export models that operate from 160 through 10 meters. Speaker filter headsets keykeyers kits lightning arrestors low pass filters mics and speaker mics misc mounts for radios software swr analyzers tcxo tncsound card interfaces tone unit voice. Mfj enterprises inc, ameritron,hygain,hygain,cushcraft,vectronics,mirage,mfj,mfj enterprises,antenna,radio,ham radio,amateur radio,tuner,analyzer,starkville,amplifier. The al80bx and al80by are export models that operate from 160 through 10 meters.
The wire grounds the 10 meter input tuned coil which in turn will not let you drive the amp in the 10 meter posposition. Ameritron hf power amplifiers al80b free shipping on most. Most of the parts are still available andor interchange withe the al80b which is an added benefit. Trouble locating hints 10052011 trouble shooting guide below generally applies to many types of amplifiers with suitable part number changes. Jul 16, 20 ameritron al 80 user manual download here. Ameritron grid overload protectors protect your amplifiers tube from excessive grid current. Ameritron al80b w desktop linear hf 16015m amplifier, 3500zg tube. The guts of the al 80b amps are their heavy duty power supplies. Based on this information, plus the fact that the originators request was posted to. The al80a covers the amateur radio bands 160 through 15 meters, it also features wide frequency coverage for mars and other. View and download ameritron al80a instruction manual online. Ameritron al80b specifications please read this manual before attempting to operate equipment unpacking instructions 1. The ameritron al82 linear amplifier is designed to give you years of trouble free service at the full legal output. About ameritron al80a modification the resource is currently listed in in a single category.
It easily runs about 800 watts pep, using a single 3500zg tube. Check the schematic, because if they did add either of these devices they should be checked to make sure they didnt fry when the tube shorted. This link is listed in our web site directory since monday apr 17 2006, and till today ameritron al80a modification has been followed for a total of 10615 times. But the main trading company of paris,texas had the best price of all the ham stores listed in the qst magazine. Ameritron autophon etoalpha command technologies e. Genuine 3500zg tube the al 80b uses a genuine 3500zg tube warranted by the manufacturer not cheaper, less reliable 3500s used by some competitors. I studied the situation for a few weeks, and finally settled on the ameritron al80b amplifier. Ameritron al82 super legal limit hf amplifier w 2 x 3500z. Ameritron al 80b linear amplifier single 3500z hf watts pep 110 or 220 volts. I love the hobby and experimenting with radios, antennas and software.
Ameritron al80b sm service manual download, schematics. While this may be barely adequate for 120v operation, i judge it inadequate for 240v service. The al80a 198412 on the al80a was not the same as the al80 above. This site helps you to save the earth from electronic waste. The al 80a covers the amateur radio bands 160 through 15. Quickly tune the ameritron al811 tuning procedure using a.
The mod for the ameritron al811h is more than you mentioned. This amplifier is 100% operational and reaches full legal limit on 16010m. The all new al80b kilowatt output desktop linear can double your average ssb power output with highlevel rf processing using ameritrons exclusive dynamic alc. I have owned the al 82 for three years now, and over that time, it has given me incredible performance on all bands. Ameritron states that it will provide information on the 10 meter mod for the al808b to any licensed amateur with proof of license. Superb rf design and layout, hiq tank circuit and commercially rated rf power. All information, images, and documents on this website are the sole property of ameritron any reuse or redistribution of the contents of this website are. View and download ameritron al 80a instruction manual online. Iirc, the al 80a didnt include an hv glitch resistor nor the b protection diode that a lot of later ameritron amps used as safety devices for issues like grid to anode shorts. If you listen closely to someone running the stock dynamic bias circuit you may hear a gritty first syllable or a mushy first cw note. Ameritron al80a restoration project ham radio library. Ameritron al80b xcelast one reduced to clear new boxed but.
Ameritrons legendary al80a kilowatt amplifier has been completely redesigned and extensively improved. Amphf ameritron al 82 hf amplifier this is a very nice ameritron al 82 amplifier. Always read and understand the instruction manual before operating any ham radio equipment. Mfj enterprises inc,ameritron,hygain,hygain,cushcraft,vectronics,mirage,mfj,mfj enterprises,antenna,radio,ham radio,amateur radio,tuner,analyzer,starkville,amplifier. I have owned the al82 for three years now, and over that time, it has given me incredible performance on all bands. In this page you find schematic, users and instructions manuals, service manuals, technical supplement, leaf. The arb704 advanced interface is compatible with all common radios and amplifiers even though radios and amplifiers do not have standardized voltages, accessory plugs, or wiring. The al572 pipil output network gives you exceptionally smooth tuning, wide matching range, full band coverage and peak performance at all power levels.
The al 80b special stepstart inrush protection stop damaging inrush current. Amps new ameritron al80b tune up i purchased a new ameritron al80b and the manual is not totally clear to me as far as tuning it up without damaging the 3500z, especially how to set the alc to prevent overdriving. Click the button below to add the ameritron al82 super legal limit hf. Ameritron al80 al 80 al80 pdf user manual for ameritron al80 al 80 al80. An inside look at ameritrons al80b dual led illuminated crossneedle meters give you four. I often misplace items like this, so im hoping this will help me take better care of these. The main category is amateur linear amplifiers that is about hf amplifiers for ham radio use. The ameritron al80a uses a single 3500z triode to produce over 1kw of power with only 65 watts of drive. The al80a, because of improved quality, drove ameritron sales upwards from around 510 units monthly up to about 50 units a month. Many amplifiers using two 3500s use such small power supplies they dont deliver much more power output than the al 80b. Dont expect much over 800 watts without really pushing it, but that does me just dandy on ssb. Ameritron amplifiertotransceiver interface the arb704 will work with almost any transceiver without the need for a plugandplay prewired cable. It also applies to all amplifiers in the al80 mainframe with suitable changes in r106 and r107.
Multiply that times four, and youre comparing 640 watts of heat rating to 500, about 30% more. In the fall of 2009 i acquired an ameritron al80b linear amplifier for my ham radio station. Also had the earlier al80a, both are the same basic amplifier with the 80b having an alc circuit and a few other small changes. Manuals for ameritron this is the manuals page for ameritron. I just wanted to show how i tune up my ameritron al 811 ham radio amplifier. Iirc, the al80a didnt include an hv glitch resistor nor the b protection diode that a lot of later ameritron amps used as safety devices for issues like grid to anode shorts. Al 80b instruction manual introduction the ameritron al 80b is an 800 watt cw, watt pep output linear amplifier that operates on all amateur bands from 160 through 15 meters. Ameritron will not be responsible for reshipping damage due to improper packing. Gop100 is grid overload protection for all amplifiers. The following is a revised al80b power supply board schematic.
Get a higher power tank circuit and grid overload protection. It involves cutting a grounding wire going to the 10 meter input coil. Fast acting electronic circuit rapidly disables the amp if excessive grid current conditions occur. The biggest difference between the 100 watt transceiver signal and the ameritron amp is the reports. Amphf ameritron al82 hf amplifier this is a very nice ameritron al82 amplifier.