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Reviews Categories | Electron Tubes | RCA 811 Help

Reviews Summary for RCA 811
RCA 811 Reviews: 4 Average rating: 5.0/5 MSRP: $25$-55 ea as of 2012
Description: this is the one of most recognized and reliable of the 811 tubes made.
Product is not in production.
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K9MOV Rating: 5/5 Dec 21, 2017 16:40 Send this review to a friend
Great tube  Time owned: more than 12 months
I have been running 3-- NOS, Jan/RCA 811a for over 17 1/2 years at 500 watts output almost 100% CW. At 500watts out just a dull red glow on the plates after over a min. of key down. These are the tubes the AL-811 and 811h were designed around, not the cheap, poor quality 811 produce now. The increased GM is also a big plus, as I can use my FT-817 at 5 watts and get over 70 watts out.
N8FVJ Rating: 5/5 Dec 21, 2017 10:20 Send this review to a friend
RCA 811A  Time owned: 0 to 3 months
The RCA are much higher quality vs the new Chinese 811A tubes. The RCA have plate fins that allow much more reserve during tuning in amplifiers. The RCA is a true 65 watt plate vs the more realistic 50-55 watt non fined plates in newer tubes.

The trans-conductance (gain) is also higher at 1300gm+ for the RCAs vs Russian & Chinese 900gm average gain.

So, for SSB use in an Ameritron AL-811 or AL811H, these tubes are perfect at 600 watts PEP (AL-811) & 800 watts (AL-811H) And, the RCA tubes do not arc internally like many Chinese 811A tubes. I suspect the RCA have a much high vacuum that is very important.

Unfortunately, these tubes are getting rare & are expensive in new old stock.
KF7VXA Rating: 5/5 Apr 24, 2014 21:19 Send this review to a friend
Quality of Days Past  Time owned: 3 to 6 months
I also found a set of new RCA 811A's.
I put them in my amp and really didn't notice any more power on some frequencies, but did on a couple of others, one thing I do know from the experiences of others, if treated right, they will still be in place pumping out the same amount of power they did years from now. The tubes that were in it were not all that old and are now spares
Should I do something a little rough on them, no doubt they will take it better than a Chicom tube would. They are getting harder to find, so if you can get a set at a decent price, scoop them up. One guy wanted $250.00 for 3 of them, pass, offer me 3 for $110.00...Sold.
73's John
VE7REN Rating: 5/5 Jan 27, 2012 15:42 Send this review to a friend
bullett proof  Time owned: more than 12 months
i have ran these tubes for 5 yrs in an al 811,then a 811h. i find them used,and are solid and much better then the factory ameritron 811,or any chinese ones made today. still readilly available on the used amrket. cant go wrong with these babies.

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