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Reviews For: Astron SS-50/M Switching Pwr Supply

Category: Power Supplies

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Review Summary For : Astron SS-50/M Switching Pwr Supply
Reviews: 11MSRP: 199.95 (meters)/189.95
AC operated (115 to 220VAC (auto selection); 50/60 Hz) switching power supply (+13.8V output; adj +/- 1 Volt). Output current (ICS) 50A peak - 40A continuous. Over-Voltage protected, output current limited, internal fuse, over-temp shutdown. EMI filtered output.
Product is in production
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# last 180 days Avg. Rating last 180 days Total reviews Avg. overall rating
VE7REN Rating: 2019-05-14
you have to do the fan replacement Time Owned: more than 12 months.
ive owned this supply since 2015,and have now replaced the original fan with a stealth brand for 8 dollars from amazon.. originally I had added a resistor to the orig fan,as you can read in my previous reviews below.. it worked,but now with the new is very quiet... I love the output on this unit,and the fan is much better than the stock.. Astron should address the crappy fan they use.. overall I cannot complain for a 8 dollar part!

Earlier 5-star review posted by VE7REN on 2015-12-27

after runnin this power supply now for a couple weeks,im happy.. I did cut the positive wire under the cover and soldered a resistor in line to run the fan at 60%..this quietened the fan a lot and makes it more appealing.. I use 2 hf rigs,2 mobile 2 meter radios and many lights on tuners,meters,etc.. I suck maybe 25 amps at most and the unit barely feels luke warm...time will tell the longevity of the switcher vs my ol rs35a from 2000..
Earlier 4-star review posted by VE7REN on 2015-12-16

this supply powers my whole shack and works well doing it.. I haven't found any birdies or anything unusual compared to my rs35 astron.. the only complaint I have is the fan is on all the time,and takes some getting used Jetstream jtps28 switcher was a lot quieter..but you could still hear the fan. ill leave it in the shack for a month or so and see how I feel at that point.. overall a nice supply.
KX2V Rating: 2019-05-13
WAY to noisy Time Owned: 0 to 3 months.
Very simple..
This is the loudest Power supply I have ever heard.
I hooked it up.. Pressed the foot switch.. Heard the roar of the fan & put it back in the box.
VERY disappointed with this thing.
S58DX Rating: 2019-04-09
Good power supply needs help Time Owned: 0 to 3 months.
Bought power supply from Dxengineering.Excellent customer service...Power supply itself is used with MFJ 1118 distribution DC strip in my shack. Awfull noise was coming from original fan..Replaced the original with Noctua NF-A6x25 Flx..Difference is remarkable..With low noise adapter operation is inaudible..To sum it up, have spend additonal 120,00 Euro to have it to my needs...Do not want to be harsh on Astron, but guys you should do better...
Lack of DC distribution contacts and fan noise is main obstacle..

Nermin S58DX
WP3TQ Rating: 2019-01-04
Added stealth fan Time Owned: more than 12 months.
Had this supply for over a year the fan whine had me crazy just did SF6025L 60x60x25mm Double Ball Bearing and know is quite don't know if it has less airflow but it feels about the same thanka
NP3TY Rating: 2018-09-25
GREAT POWER SUPPLY Time Owned: 0 to 3 months.
hI ,i recently get this power supply for my shack,is very light and the meters looks well and not any interference on my rigs , the only cons is the noisy fan motor but i replaced with the fan motor with the same size but quietly , i recommend this fan the results is very impressive this fan is designed for noise reduction and cheap price i leave the description if you like to browse, Vantec Stealth SF6025L 60x60x25mm Double Ball Bearing Silent Case Fan (Black)
the other cons is the cheap biding block i have a plan to replace with better system when i finished i let you know .
NE6I Rating: 2017-10-11
Too Noisy For My Taste Time Owned: 0 to 3 months.
I had been running the Yaesu FP-1030A supply but mine failed, so I went to HRO and told them I needed a new PS that was both RF and audibly quiet. They recommended the Astron SS-50M, and didn't even hesitate in doing so. Seemingly, a very good sign!

On the plus side, it's about half the size of the Yaesu height-wise. And much lighter. Plus it has a higher rated output (40 amps, not 50, despite the model number. It can do 50A limited duty though. The Yaesu is rated at 30A.) It's also less money than the Yaesu. So that's a lot of pluses so far.

Note: it only has one output terminal and if you wish to run multiple devices on it, space is limited on that terminal. I got talked into a Rigrunner and Powerwrx equip to address this for my installation. More $$$ that then negated my savings over the Yaesu supply I had.

However, the killer for me turned out to be the audible noise. The fan noise on this model is quite a bit higher than the Yaesu. And mine has a high pitched whine that after a while, drives me nuts.

At five weeks in, I waved the white flag and purchased another Yaesu. This Astron is now back in the box as an emergency spare.

It wasn't a deal killer but the Yaesu supply matched my Yaesu rig (naturally) whereas the Astron didn't quite do so. I have the supply on the radio desk so it's a mild concern for me. That's why I went with the FP-1030A originally and ultimately did so again. And the ultimately comment now includes the noise level. (Don't get me wrong, the FP-1030A isn't silent but it's much quieter than the SS-50M.)

Your mileage may vary.
KJ5GT Rating: 2017-01-29
Overall, good supply. Time Owned: 6 to 12 months.
I have had this supply nearly a year.It has been reliable, so far, powering a TS-480HX. I have not been able to detect any switching noise on any band.I have two complaints.One is fan noise, not that loud, but present all the time.One observation: the speed will vary with voltage adjustment, faster at higher voltage.The second complaint is about the terminals.They take a single large diameter wire.With the 480HX there are two power leads, and it's impossible to connect both directly to the power supply.I used two short, tinned, 10 G wires to a terminal strip, to connect both 480 power cables.I would prefer a conventional terminal strip, or studs, for the output connections.
K9VSW Rating: 2016-04-07
Power Supply Failure Time Owned: 0 to 3 months.
This is a follow up of a previous review about Quality issues. After using the supply for about 3 weeks and less than 1 hour per day it failed. The supply would trip when my TE Systems 1454 was only drawing about 35 amps peak. Voltage regulation was not working in SSB and CW modes. I could see the Volt meter begin to swing from 13.8 volts down to about 6 Volts and the supply would eventually trip. Sent it in for repair. Astron had to send me a new supply.
KD4ISM Rating: 2015-10-21
Fan noise Time Owned: 0 to 3 months.
I have a ss30m power supply and it works great. So I thought I would buy a ss50m. The ss-50m fan is loud and has a noise that cuts thru my headphones. There is a lot of work to be done on this one.
N7CW Rating: 2015-09-29
Fan Noisy Time Owned: 0 to 3 months.
This power supply is about 1/3 the size of the old RS-50A and much more efficient. I run most of the equipment in my shack from the RS-50A and it is constantly hot on the bottom.

The SS-50 (mine has the meters) is small enough I could easily set it on the operating desk with the other equipment - the RS-50A sits under the desk on the floor.

It works fine. I couldn't find any RF noise, but the fan noise is high-pitched and goes right through my headphones. So I put it on the floor under the back of the desk. Still way too noisy. And as noted above, it runs all the time. I have a quiet shack and I guess I like it that way.

All my Elecraft equipment have temperature controlled fans - it can't be too hard to add that feature. I'll keep it as a back up, but it was a major disappointment.