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Reviews Categories | Amplifiers: RF Power - HF & HF+6M | Ameritron AL-811H Help

Reviews Summary for Ameritron AL-811H
Ameritron AL-811H Reviews: 172 Average rating: 4.5/5 MSRP: $899
Description: 160-10 meter RF Amplifier. 4 811A tubes
Product is in production.
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K6MTS Rating: 5/5 Jun 29, 2014 23:55 Send this review to a friend
Bang > Buck  Time owned: 0 to 3 months
Simple, easy to tune, works as advertised. My first amp and it works great. Pondered over the Solid state for less output and twice the $, glad I chose the 811H.
AA4AJ Rating: 5/5 Jun 17, 2014 04:24 Send this review to a friend
Works great  Time owned: 0 to 3 months
It all depends on what you want. This amp is the lowest price in dollars / watt that I have found. It is just an amp with none of the stuff you can add to one - no qsk, no soft start, no grid protection, no auto tune. The tubes are fragile (I have been told) but, they are inexpensive and they work. This amp is well built. No loose parts. I get a dependable 600 watts out on CW and more on SSB. It seems to be very durable. I could get something fancier or more technically advanced but, not for the money.
WD9IQN Rating: 5/5 May 9, 2014 12:44 Send this review to a friend
AL-811H working great !!  Time owned: 3 to 6 months
I have had the AL-811H for 5 months now. I primarily use it on 80 and 10 meters. Tunes up easily. Good clean output on my scope. I am happy with it.
MM0IMC Rating: 4/5 Jan 25, 2014 08:55 Send this review to a friend
Gone Up In My Estimation!  Time owned: more than 12 months
Finally, I've had some faith restored in this amplifier. It still performs very well on most bands giving between 800W-900W into a dummy load, cruising along at the UK legal limit of 400W with an input drive of less than 20W!

You can get nearly 700W on 12m with a lot of drive, but that comes with a word of caution as below...

Be aware though that this amplifier doesn't really like 10m though! It runs hots and requires a lot of drive for this band - a quick way to shorten the life of your valves (tubes)!
MM0IMC Rating: 3/5 Jan 20, 2014 12:46 Send this review to a friend
Fixed the amp...  Time owned: more than 12 months
I finally got a replacement rear band switch from Ameritron and got the amplifier working again. :)

I noticed that the drive spindle between the band switches seems to rotate with a pronounced off-centre motion. This may have cause the premature wear of the original rear band switch as it isn't that robust as compared to the front one...
N9GUU Rating: 5/5 Jan 5, 2014 19:32 Send this review to a friend
Great Amplifier  Time owned: more than 12 months
I have had my AL-811H for several years and thought it was finally time to write a review. I know that MFJ has its issues with bad solder joints and other quality issues (as you can gather from the many comments and reviews on MFJ products) but what can I say...? My AL-811H has been flawless and performs great. I just replaced the original tubes with new 811A's from RF Parts and the amplifier once again delivers 800 watts. Would I recommend it? - you bet! In fact...I'm probably going to look for another one!
MM0IMC Rating: 2/5 Dec 6, 2013 05:24 Send this review to a friend
Duff Rear Band Switch  Time owned: more than 12 months
As usual, the connection with Made From Junk lets this amplifier down! The rear wafer band switch has given up the ghost, even though I religiously had the amp in standby and never transmitted whilst moving the band switch.

Built DOWN to a price and NOT up to a standard!
VK5CM Rating: 5/5 Nov 20, 2013 05:17 Send this review to a friend
Great Linear thats easy to Tune-Up!  Time owned: 0 to 3 months
This is the best Amplifier I have ever used,so easy to tune up with my Yaesu FT-950. It kicks out a clean healthy 800 plus watts quite easily (much better LA than the self tune one selling for three times more)Follow the instruction booklet and you'll have a perfect linear. Try using only 60 watts input from the exciter and no ALC for easy 59 Plus reports. Hook back the ALC for more than 70 watts from the exciter. In Australia we are limited to 400 watts, so 30 watts from the exciter is ample.
73 Chris
KA2UUP Rating: 5/5 Sep 10, 2013 08:39 Send this review to a friend
11 years and still going on strong  Time owned: more than 12 months
Only problem I have had was with what looked like runaway current about 5 years ago. I sent the thing to Ameritron and it was repaied within the week for $60, including the shipping. I modified mine with 2kV rated capacitors and also installed a softstart module from another vendor who had them some years ago. I tried the 572B tubes and worked very well. However, I returned to the original 811As after I broke the cap off from one of the 572Bs. Still giving good service at the rated 600 W on CW and 800 W p-p on SSB with about 65 W of drive from an IC-746.
KF6OCI Rating: 5/5 Aug 16, 2013 14:56 Send this review to a friend
Good Practical Amp  Time owned: more than 12 months
I have two of these, didn't know anything
about them at the time, but there is so much
info on line that learning about them inside and
out is quick. Easy to work on and there are
numerous Hams including yahoo groups that
kindly help. Great learning experience.
I'm easy on my equipment, don't push.

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