MFJ 4230 DMP 30A Power Supply with Powerpole® connectors.

[@va2dv1]

I have the analog 4230 version and I really like it. It never fails even in non-amateur applications.

[@hamradiotube]

Its been doing well for me so far.

[@davidsradioroom9678]

I love my MFJ switching power supply. Martin had really done his homework on this!

[@potatoslim2332]

I'm sure it's super quiet but i find it interesting that you tested the noise while in cw mode as that mode would have the most filtering in place to eliminate interference. Cool vid

[@hamradiotube]

It wasn't a radio noise test, it was a "how loud is this fan" test. As far as radio noise, I haven't had any of that either.

[@denelson83]

​@@hamradiotube Because it has proper filtering or is equipped with ferrite chokes?

[@SevenFortyOne]

I like that its variable..makes it quite useful for different applications.

[@hamradiotube]

Exactly. Good bit of kit.

[@alvarogaitan2529]

thanks, Mike nice power supply

[@BradSnyder1]

Looks like a mighty fine power supply that's pretty quiet. Thanks for the review Mike! 73

[@ke6mt]

Nice. I own the version with an analog meter on the front. Love it. Plenty of nice, quiet power.

[@hamradiotube]

Right on Rex.

[@brianrose2487]

Nice size and very quiet! Great review.

[@hamradiotube]

Thanks Brian.

[@forgetyourlife]

Got me the analog needle version. Little cheaper and has a needle. Love those A/V needles. Long live the Needle.

[@hamradiotube]

Death to analog!

[@robertrockwell7581]

i have the MFJ4230MV. thanks for the review.

[@JnJTrueOutdoorAdventures]

Nice little power supply. That would be great in a go-box setup along with a SLA. Juddie WD8WV

[@hamradiotube]

One of the guys in my club has this power supply that he takes portable and hooks up to a generator when we do club activations.

[@davem7847]

Would like to compare that switching mode power supply against an Astron Linear Supply to see how much noisier it is on ALL the HF bands in LSB/USB and digital modes.

[@thomasweigel2328]

Mike, another great review! Good on 'ya! 73

[@mikesmithg0rfd356]

thank you

[@KD2GIY]

I use a trip lite pr60. Powers the 3 radios in the shack at full duty. I like mfj but not the power supplys. I have a smaller power supply switching and it has a noise offset Switch. Send that garbage back.

[@hamradiotube]

Haha, I guess I've been pretty lucky. I have 3 switching power supplies and I don't hear noise from any of them. One is from RadioShack!

[@BlackHamRadioUniversity]

Can you explain and go over the connections in the front of the power supplies.

[@kevmscott]

Thanks for the review Mike. I think I missed the model of the charger you had attached. Hope you and your family have healthy and happy holidays.

[@hamradiotube]

Thanks for watching Kevin. I wasn’t using a charger. I was using the power supply to charge directly to the battery and the HT’s with the Powerpole connector on the back of the supply. The adjustable voltage allows you to do such things and more.

[@kevmscott]

K8MRD RADIO STUFF , thanks, the device you had in series between the power supply and battery in your demonstration?

[@hamradiotube]

@@kevmscott Thats the HamRadioWorkbench Powerpole distribution block. Just used it to have a fuse inline.

[@kevmscott]

K8MRD RADIO STUFF and it has a meter on it showing the actual amps?

[@kevmscott]

Sorry for the 1000 questions, I did a screen capture and found out it was the PowerWerx precision Watt meter that I was referring to. Sorry to bother you with the questions. Thanks again for the video, Happy Holidays!

[@hhampton]

I`m building up a shack and need a small variable power supply. This looks like it might just fill the bill. Thanks.

[@scotthill6807]

Nice video but to be honest I'd be sending that unit back if the Amp Meter is that far off. You paid for a working amp meter on the unit, you should get one.

[@hamradiotube]

I absolutely agree with you. They sent me this unit for review so I didn't pay for it. If I did, believe you me I would be sending it back.

[@kchedville]

Shame , can't seem to find one for sale anywhere.. :(

[@brianpeck3120]

I do wish they had a hold function on the voltage to prevent an accidental bump. Just like on certain radios. - KD2KAK

[@hamradiotube]

Its not really a big deal though. It just sits on my bench and I have never accidentally changed the voltage.

[@brianpeck3120]

@@hamradiotube Agreed and most stuff is low voltage protected.

[@hamradiotube]

@@brianpeck3120 I did learn to not plug in a Raspberry Pi until you are sure your voltage is at 5V haha! Not with this power supply but it still happened. Got to see some magic smoke though!

[@jamescampos9358]

Hello,I have the MFJ-4035MV power supply, which was stored in a box for over 10 years. Previously it was working well. But now the voltage meter fluctuates and does not stay as set with the voltage adjustment knob. I did open the unit up to blow any dust in there but the problem persist. Can you tell me why this is happening?

[@hamradiotube]

Unfortunately I wouldn’t have any clue. Contact mfj, I’m sure they could fix it for you.

[@BlackHamRadioUniversity]

Could of questions......Would I need an in-line fuse with the power supply? Will this work with the ICOM 2730A? If not what power supply would you recommend to power my ICOM IC-2730A?

[@hamradiotube]

It would be wise to put fuses on things, yes. This should be no problem for that radio either. I rather like this power supply and use it all the time.

[@KI4CFSHamRadioMartinBrossman]

Nice job!

[@VK5IR]

How easy would it be to accidentally bump the voltage knob and put 16 volts into a radio rather than 13.8?

[@hamradiotube]

Not very easy. I feel that would have to be a more deliberate thing. Plus, the dial has an indent so it stops on 13.8, and needs a bit of pressure to move it away from that. It's pretty solid.

[@F5VMJ]

Yes. I’m a bit wary of that too. I take the knob off and just leave the potentiometer spindle showing. It’s hard to turn. In the past I’ve also used spindle locks which basically lock the potentiometer from turning. If you can’t find a spindle lock try a mini vernier dial knob. These are supposed to be used with multi turn potentiometers but can be used here too, just because most have a locking lever that prevents adjustment when set. Although a tad more expensive than a spindle lock, they are more aesthetically pleasing on a front panel. A cheap skate option that I use on a lab power supply is a bit of blutac or tape 😜😂 on the voltage adjustment control.

[@DaninVirginia]

Did I miss something? How did you connect the HT ‘s to the power supply? I see the cord go into the HT but not sure what’s happening on the other end?

[@hamradiotube]

I have a few HT's that charge off of 12V so I can connect them to the power supply. My Yaesu VX7R just goes straight into it with the power wire, and the charging is handled internally. I use power poles of course. I can also lower the voltage for other ht's that like to see about 10 volts, plug it into the cradle, and charge away.

[@xijinping7089]

great video! can you please check for me if the rt52 has basic/enhanced privacy encryption in the programming software?

[@danquigg8311]

Why do you imply that it's not so good for charging an SLA battery?

[@jay-rus4437]

Are they discontinuing this model. Cant seem to find it at most locations. The non digital readout is readily available

[@hamradiotube]

Interesting, I don't see it on their website either. I don't know. Would be weird if they were, its a really nice supply.

[@agso73]

How about the 220v switch position?.

[@hamradiotube]

Never used it. We don't use 220 much here in the states except for laundry machines and ovens. Everything else is 120V.

[@JATP-wp6eh]

Is that good to use for the Xiegu G90?

[@hamradiotube]

it sure is

[@Smobus]

Hi, it's good for the Yaesu ftFT-991A ?

[@hamradiotube]

Sure, it'll work for just about any radio no problem.

[@Smobus]

@@hamradiotube thx

[@bradcfi2]

Quiet sonically but how about RF noise?

[@hamradiotube]

I haven't heard any noise from any of my power supplies.

[@nivid01]

It would drive me nuts knowing the meter was inaccurate by 0.5A

[@hamradiotube]

The OCD is strong with this one. Yeah its kind of annoying but just add .5 and there you go I guess. Its not my main power supply so its not that big of a deal. I do use it quite a bit on my work bench for testing things or charging the occasional battery. It's a really nice power supply other than the meter.

[@Tallhorse89]

@@hamradiotube what would be your recommendation for a main power supply.

[@thomashenderson603]

would that be ok for a FT991A

[@hamradiotube]

Absolutely.

[@thomashenderson603]

@@hamradiotube Thank you!

[@majorkonfuzion1007]

Error 404: The page your attempting to reach no longer exists

[@hamradiotube]

They have a new site now. I should fix that. Here's the link: mfjenterprises.com/collections/mfj/products/mfj-4230dmp

[@johncarr123]

do they still sell this unit?

[@hamradiotube]

Doesn’t look like it. I haven’t seen it on their site in a wile.

[@vfrfoxtrott6430]

👍👀📻...

[@williampeacock9473]

That's a very nice power supply. I like the digital readout and the compact size. The price needs to be a bit cheaper than $159 . But that's just me. 73 AE4OY WILLIAM EM-81UF

[@TheBill70800]

Not a fan. give me a old time transformer amp.

[@lisaayers1975]

Looks like a fan on the back to me.

[@clems6989]

You only proved that the metering is inaccurate

[@hamradiotube]

I also proved that no matter what type of content you create, someone is going to write a useless, negative comment such as yours.

[@shooter.2578]

Matt Miller N8QZH I’m with you video is mediocre at best

[@clems6989]

@@hamradiotube and uf you cant handle even mild criticism you shouldn't be making public videos at all..

[@brianmoss5483]

First like happy holidays es gd dx

[@hamradiotube]

You couldn't even have watched it that quick haha! Merry Christmas and Happy New Year!

[@petemitchell6788]

Never, and I mean NEVER shave your beard above the Adam’s apple. A barber would never do that to you. It adds one chin minimum and if overweight one extra neck roll.

[@hamradiotube]

Do I look like I go to a barber?