You can now help support WorldwideDX when you shop on Amazon at no additional cost to you! Simply follow this Shop on Amazon link first and a portion of any purchase is sent to WorldwideDX to help with site costs.
The Feb 2025 Radioddity Giveaway Results are In! Click Here to see who won!

Reply to thread

Message

Last month I repaired an 811H for a friend, which included new tubes. I put in the 572b as replacements. Output was around 475 watts on the H, give or take 25 watts or so. The Ameritron 811 is an okay amplifer, however I was not all that impressed with the build quality, but it is a decent little amplifier for someone on a budget. One of the nice things about the amplifer is you can still get parts direct from Ameritron. I imagine for a three hole 811, you will probably see around 350 watts out. The 811 has been around for a long time, I have not heard too many bad things about the amplifer. Most the problems come from those trying to overdrive the amp, keep the drive at 70 watts or less and the amp will last. Ameritron has a bad habit of the advertising more watts than their lower tier amplifiers will do. The 811 line and the ALS 500 both will not do the watts they advertise, you will never get 600 watts out of 4 811 tubes, they usually only do about 125 watts a piece.

If you don't like ebay, take a look at the classified boards at Ham Radio Home Page - QTH.COM by KA9FOX! Classified swap ads for amateur radio, ham radio and more, you may be able to fetch a good deal there.

I just looked at QTH and there are several AL-811's and one AL-811H listed there in the $500.00 range.

As some pointed out you can find really good deals on Heathkit amps, but if it were me, I would stick with the Ameritron, they are just a little more modern.

73

<blockquote data-quote="295" data-source="post: 149285" data-attributes="member: 9162">Last month I repaired an 811H for a friend, which included new tubes. I put in the 572b as replacements.&nbsp; Output was around 475 watts on the H, give or take 25 watts or so. The Ameritron 811 is an okay amplifer, however I was not all that impressed with the build quality, but it is a decent little amplifier for someone on a budget.&nbsp; One of the nice things about the amplifer is you can still get parts direct from Ameritron.&nbsp; I imagine for a three hole 811, you will probably see around 350 watts out.&nbsp; The 811 has been around for a long time, I have not heard too many bad things about the amplifer. Most the problems come from those trying to overdrive the amp, keep the drive at 70 watts or less and the amp will last.&nbsp; Ameritron has a bad habit of the advertising more watts than their lower tier amplifiers will do.&nbsp; The 811 line and the ALS 500 both will not do the watts they advertise, you will never get 600 watts out of 4 811 tubes, they usually only do about 125 watts a piece. If you don&#039;t like ebay, take a look at the classified boards at <a href="http://www.QTH.com" target="_blank">Ham Radio Home Page - QTH.COM by KA9FOX! Classified swap ads for amateur radio, ham radio and more</a>, you may be able to fetch a good deal there.I just looked at QTH and there are several AL-811&#039;s and one AL-811H listed there in the $500.00 range.As some pointed out you can find really good deals on Heathkit amps, but if it were me, I would stick with the Ameritron, they are just a little more modern. 73</blockquote>

[QUOTE="295, post: 149285, member: 9162"] Last month I repaired an 811H for a friend, which included new tubes. I put in the 572b as replacements. Output was around 475 watts on the H, give or take 25 watts or so. The Ameritron 811 is an okay amplifer, however I was not all that impressed with the build quality, but it is a decent little amplifier for someone on a budget. One of the nice things about the amplifer is you can still get parts direct from Ameritron. I imagine for a three hole 811, you will probably see around 350 watts out. The 811 has been around for a long time, I have not heard too many bad things about the amplifer. Most the problems come from those trying to overdrive the amp, keep the drive at 70 watts or less and the amp will last. Ameritron has a bad habit of the advertising more watts than their lower tier amplifiers will do. The 811 line and the ALS 500 both will not do the watts they advertise, you will never get 600 watts out of 4 811 tubes, they usually only do about 125 watts a piece. If you don't like ebay, take a look at the classified boards at [url=http://www.QTH.com]Ham Radio Home Page - QTH.COM by KA9FOX! Classified swap ads for amateur radio, ham radio and more[/url], you may be able to fetch a good deal there. I just looked at QTH and there are several AL-811's and one AL-811H listed there in the $500.00 range. As some pointed out you can find really good deals on Heathkit amps, but if it were me, I would stick with the Ameritron, they are just a little more modern. 73 [/QUOTE]

Top Bottom