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You can
write your own review of the Alinco DM-340MVT.
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ON4AMG
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Rating: 5/5
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Jan 30, 2012 10:14
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Rock Solid
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Time owned: more than 12 months
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As in the title!
Very quiet and rock steady operation, not causing any interference at all.
The only potential improvement would be a back lighted display but this is definitely not a deal breaker as in my case it was essentially set (the voltage)and forget.
The heat dissipated is quite noticeable in a small shack but this being said, the housing never gets any warmer than lukewarm. Would not hesitate to recommend this for a permanent installation.
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K2WO
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Rating: 5/5
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Dec 16, 2011 18:54
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Great PS
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Time owned: more than 12 months
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I've had my DM-340MVT for almost 13 years now and I've never had a problem. It's on almost 100% of the time and runs quietly and just works. It's a great supply and the various outputs on the front panel make it very versatile.
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KB3FTE
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Rating: 5/5
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Dec 16, 2011 15:29
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Quiet!
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Time owned: 0 to 3 months
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I purchased this DM-340MV just recently when my MFJ-4035MV gave up the ghost. Not enough history so far to comment on longevity, but this power supply seems very well built and very quiet. I could not be more pleased.
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AJ4WP
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Rating: 5/5
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Sep 11, 2011 03:47
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Great Power Supply
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Time owned: more than 12 months
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I have had this power supply for years. Been on 24/7 for 8 years now and never a problem. Power my Kenwood 2000 and other mobile 2 meter units. Voltage always there and no problems whatever.
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AE1S
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Rating: 5/5
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Jul 27, 2010 08:58
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Got a second one
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Time owned: more than 12 months
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My first DM-340MVT is probably 10 years old and still going strong. After adding some more transceivers to my shack I got a second one. This is a very solid and well engineered power supply, rated for up to 35A. The tubular heatsink with forced air cooling is a very clever solution. The fan is temperature controlled and almost never turns on. The power transformer is HUGE and there are two 40A (each) full-wave bridge rectifiers in parallel. The regulation is done with 4 power transistors (each with max collector current 40A). You can adjust the output voltage very smoothly from 0 to 15.5V with a dent at 13.8V. The supply is very QUIET with low ripple - the filter capacitors bank sums up to almost half Farad (470 mF to be exact). There is an over-current protection set at 35A and in my newer supply (missing from the old one) an over-temperature protection - shuts the output down at 95 degree Celsius (heatsink temperature) and resets it at 60 degrees. The two high-visibility meters are very nice with high contrast scales. I did a simple modification to illuminate the display (see my blog page) - that was about the only improvement I could think of.
Seems that over the years this real work horse got even better.
They have "beefed up" the supply in my newer version - the power transistors are with max 40A collector current vs. 35A each in the old supply. Same thing with the two full-wave bridge rectifiers. The only other changes are an internal magnetic shield on the winding of the power transformer, the addition of over-temperature protection and the 3-prong power cord.
I would highly recommend this power supply - yes, it is big and heavy but very quiet (both electrical noise and sound) and it is very robust. I attempted (purely by accident) to "top off" a fully charged 70 Ah SLA battery in REVERSE and with NO in-line FUSES! After the volcano of sparks, the "butcher's bill" was a single $0.47 general purpose transistor on the regulator board.
Nice choice of terminals too. The linear supply is the way to go for a clean and stable power.
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KI6OSH
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Rating: 5/5
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Feb 1, 2010 20:50
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Wonderful!
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Time owned: more than 12 months
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My DM-340MVT has now been operating for two years with no problems at all. No sound from the fan that I've ever heard. It would be nice if the meters were illuminated but not a big deal. Very good looking unit and I would highly recommend this to anybody looking for a reliable power supply.
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KD8LXL
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Rating: 5/5
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Dec 13, 2009 12:13
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sweet
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Time owned: 6 to 12 months
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Very nice, I've never heard the fan on... I actually have to look at it to see if the red light is on so i know its working.
No noise as far as I can tell and it runs just everything I own without a problem.
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N7MFY
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Rating: 5/5
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Apr 16, 2009 14:51
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A real work horse!
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Time owned: more than 12 months
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My neighbors the TASER people threw out the power supply I got. I dove in after it, and after cleaning it I replaced the regulator IC. With the beating they gave it (Taca Taca Taca) all day long it should have been totally fried. But just 1 cheap part from radio shack and we are back in business with plenty of clean QUIET power. I'll never sell my 340MVT.
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KB3DIV
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Rating: 5/5
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Nov 15, 2008 10:54
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Built to last!
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Time owned: more than 12 months
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I have owned this power supply for over 11 years with no issues.
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VR2XMQ
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Rating: 5/5
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Apr 15, 2008 03:17
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Built to last, a definite keeper
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Time owned: more than 12 months
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I have had mine since the last solar cysle and it is still rock steady. No further comments and introductions needed as the previous reviewers have already said it all.
Steve, VR2XMQ
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