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Show all reviews of the Kenwood TL-922A
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of the Kenwood TL-922A.
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EA1XF
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Rating: 5/5
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Nov 21, 2009 16:21
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Nice Amp and working better and better
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Time owned: more than 12 months
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I bought mine in 1999 and it has been running flawlessly until a couple of months ago when a choke burnt out, so I thought it was time to send it for a complete overhauling. Every little part, board and values were checked in order to have it as the very first day when came out from factory. Input swr was re-adjusted and some components were replaced for new ones, like the zener bias diode, capacitors and even the final tubes, although there was no need to replace them yet, now has a new pair of matched Amperex 3-500 ZG and I am keeping the old ones as spare.
It loads and tunes very smooth and I always tune mine by the “Plate – Load – Plate procedure” to maximum power output, with the meter switch on the RF position. When the amp is perfectly aligned, this method will make the Ip automatically dip to the minimum. With the transformer set in the 240 volts position, these are the readings I get on 14.200 MHz, on the SSB position and on my PowerMaster meter:
Input 86 w ---- 1.185 w (output) 130 mA (IG), 0.55 mA (IP)
Input 108 w --- 1.429 w (output) 175 mA (IG), 0.62 mA (IP)
(Note that the IG and IP readings do not exceed the ones given by the manufacturer)
With 120 watts from my TS-830S, I saw 1500 watts coming out from the TL-922. Not bad, isn´t it?. I wonder how much power will put out if connected to 220 volts, but I will not make the experiment, hi,hi.
The only thing I dislike is the loud relay. It was not worth to change it for a quiet one because it works perfect and is quite solid.
I enjoy very much working with it and I am sure that if we keep the
recommendations suggested by the manufacturer, this amp will last for ever. It is built like a tank and makes a nice looking piece of gear on the shack.
73, Carlos
EA1XF
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Product is not in production.
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