I am an active contester and while not always SO2R, this amp now has lots of hard hours on it over the past several years. The Kenwood runs on two big deep cycle RV batteries - bought them at WALMART. In case you are wondering, my wilderness antenna is a G5RV up 30 feet on a fiberglass push-up pole. However, I have read that the power supply in the 811-H is not designed for the 572B. Really Why buy a rig planning to abuse it Ameritron does offer an amp using those tubes. I have not yet read anything that persuades me to spend a bunch of money to replace those tubes with four 572B tubes.The argument seems to be they take abuse better. Like most stuff, you learn to use them properly and they work great. I joined the hobby in 1961 and am very comfortable with dipping and loading.įor me a solid state amp offers me very little in the way of improvement so definitely not worth the money.īesides, I love the peaceful orange glow of the tubes and the lighted slow action movement of the two panel meters. Out in the wilderness the Kenwood, 811-H and the MFJ tuner are just what I wanted. Went through it when I received it - no problems. So I bought a new AL-811H and an MFJ Differential -T antenna tuner. Then I took up operating portable in my trailer out in the wilderness. If the factory would add a drop or two of locktite on the setscrews and double check that shaft coupler.oh I forgot this is MFJ after all. Got it aligned and FINALLY my amplifier is working more or less as designed. What a pain in the backside that is to fix.you have to google and google until you find someone who puts the alignment procedure online. Of course I did not know this and was having a LOT of trouble with intermittent operation even when brand new.Īfter it ate a set of tubes, I ordered a brand new set and ooops.still having trouble BUT I re-opened the case and I noticed the slipping shaft coupler. Review Summary For: Ameritron AL-811H Reviews: 183 MSRP: 899 Description: 160-10 meter RF Amplifier.Ī tubes Product is in production More Info. I have been a ham for a very long time but never had an amplifier before. The DXZone is the largest human created and maintained library of web sites dedicated to Amateur Radio, currently lists 20.000 links organized into 600 categories and subcategories. The solution for this is to provide the meter backlighting with LEDs. These bulbs are usually integrated into the actual panel meter. This mod apply to other Ameritron AL Series RF amplifiers and allow extension to 10 and 12 meters band.Ī common failure with the Ameritron AL-811 and similar amplifiers is that the panel meter lights burn out prematurely. Ameritron 10 Meter Mods Writer License Is RequiredĪmeritron 10 Meter Mods Writer Mod Apply To.Ameritron 10 Meter Mods Writer Mod Apply To.
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