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| Reviews Summary for Dentron Clipperton QRO |
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Reviews: 2
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Average rating: 5.0/5
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MSRP: $(missing—add MSRP)
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Description: 160m-10m 1300W Linear Amp
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More info: http://
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write your own review of the Dentron Clipperton QRO.
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NC9K
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Rating: 5/5
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Oct 23, 2004 12:50
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Very versatile amp.
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Time owned: 3 to 6 months
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I was looking for a compact linear amp to run 375 watt AM carrier on 160 to 10M. I had a chance to update the bias circuit in a FL2100B. The 572B's in that amp put out an impressive 600 watts before gain compression set in. The tubes did not turn red even after 1 min. keydown.
So I started searching for a 160m to 10M amp with tuned input running four 572B's. The Dentron QRO was it. I picked one up and put it to task. It puts out better than 1400 watts PEP before gain compression when driven with the Atlas 350XL I reworked.
The QRO has been a blast on 160M when driven by the 350XL for SSB or an Icom 706MKIIG for 375 watts AM carrier. The tubes do not turn red.
And new a new matched quad of graphite anode tubes with Cetron design are only $160 from a regular ebay seller. Talk about cheap to freshen up if ever needed. And the QRO power transformer has about 30% more mass than the transformer in my SB-220 has.
The QRO has been so easy to operate and so much fun I just bought a second one to replace the SB-220 with.
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K4QX
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Rating: 5/5
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Mar 23, 2002 10:08
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Very good for the price
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Time owned: more than 12 months
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The Dentron Clipperton QRO is essentially the same as the Clipperton L but with a tuned input.
I purchased this amp over 20 years ago and it's four Cetron 572B's still produce 1200 Watts PEP. It's cooling fan is 1 speed and hence a little noisy. Consistent powerful blowers will make a little noise. It's keep the tubes cool and suits me fine. This amp was a demo bought from a dealer and came with the 10 meter mod. It's interesting to note it works fine on 110 Volts as long as you use a number 10 dedicated line and outlet. Otherwise it can easily be rewired to work on 220 Volts. It's simple and easy to use. The manual says the tubes need only a 3 second warm up. I recommend 5 minutes. Although I have used it in a hurry on a very short warm up to work a rare new country. As for the tubes the Cetron is a work horse 572B. If I were to replace them I'd buy Taylor 572B's. Taylor tubes will outlast a Svetlana as they simply have more metal in them and are quality made to last. The price on this amp was $ 610. In today's used market you still see the amps fetching $ 400. They're worth it as its been all the amp I'll ever need. It's a shame Dentron went out of business. If I were to need a power transformer I'd be hard pressed to find one. Still over 20 years of service says it all. I've got my money's worth and then some. For a cost effective near legal limit amp it's a tough act to follow. I wouldn't hesitate to buy a used unit from a good source. You may replace the tubes in time but everything else should hold up well. I give it a thumbs up for durability and a 5 overall rating for an amp in the near legal limit class.
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