Bill-N6EF-I just picked up 2 460 watt (HSTNS-PD14) power supplies off eBay for cheap ($15 for the 2 with free shipping). The pinouts are the same as with your power supply. Instead of using a resistor, I just shorted the 2 pins through a switch and that worked great. The resistor worked but I wanted to see if just a short would work and it did. The 460 watts only gives me around 35 amps but that's perfect for my go-box project. The voltage isn't high enough to charge my LiFePo4 battery which needs 14.2V+ but it works great for powering my Yaesu FT-857D, Raspberry Pi, and USB-C external monitor plus everything else I need to power. I almost bought one of those PowerWerx power supplies for $119 but when I saw this, I thought I would give the HP power supply option a shot. Glad I found your video first. Thank you!!!
@@davidsturm9058 Most if not all radios that require 12 volts usually have a range form 11.8 but we will say 12 to 13.8 volts to operate properly. It is basically the current that is critical when trying to transmit. I like these server or PC power supplies since they only output 12 volts and deliver the needed current to RX/TX effectively. I somehow feel the components will last longer with the exact 12 volts or so instead of 13+. I'm sure there is so much more to this but its my personal findings.
Jumping those two pins with a wire accomplishes the job of turning on the power supply and I've left it ON in that "hacked" setup for years without issue, however the proper way to turn it on is to connect a 21k-ohm resistor between pin 36 & 37, then connecting pin 34 to the ground will turn it off and on.
Server supplies are miles ahead of the typical competition in design, protection, and efficiency. The thing is computers are constantly being upgraded so there is an abundance. Unfortunately most just go to E-waste recycling.
That's great! It would be better if it were 13.8v, but you can't have it *all* for just $12 :) I'll have to give this a try for a project I'm working on. Thanks for posting it :)
Good video.. I did this with two 82 amp psu from a hp server i had, and it had a connector board that made the two psu's work together and balance the load.. pretty cool
I am using an ATX form PSU with around 35 amps running my icom 7300. It shows about 12v on the radio but it is barely above the red on the volt meter. Does the radio want more like 13.5 volts? Am I losing any output power on TX running only 12 volts?
Yes you can I did it, open it up and there's a pot you can turn up the voltage to 12.9 or 13v, if you want to go higher, the pot doesnt have enough range and you have to add a resistor inline with it. Do some googling there are articles with all the details
I bought one of these. Same model. When I used the resistor on pins 33 and 36 the power supply would not turn on. I tried several resistors from 100 ohms to 1 K ohm and nothing. With a direct jumper the supply turns on and works fine. Other videos for modifying this supply do not mention the need for a resistor between these pins.
That's a hack, and it works, but the proper way to turn it on is to connect a 21k-ohm resistor between pin 36 & 37, then connecting pin 34 to the ground will turn it off and on.
This has been tested for noise by numerous other hams, and the only thing quieter is a battery. Remember, this is for powering servers, high dollar devices which don't need a lot of crap in the power.
No I didn't do that mod, really its only necessary if you want to charge batteries with it, my radios run fine on the 12v. I gave a link in the description to a website showing how to do that mod.
There's a link in the description, I have not tried it, i think you might only need to do that if you are using the ps to charge batteries, most electronics run good on 11.5-16v.
Oh yes. I used a 10 turn 10K ohm variable is series with a 12K fixed rather than the 23K2 specified. Much easier to us the 10 turn to set at 13.8V. ua-cam.com/video/tqDNg_HCvFk/v-deo.html
how big is the current thru that resistor? looks a bit over dimensioned. PS now that you have save $80 on the PS please think about investing in a tripod. {head-spin}
Hi, just wondering why it requires a resistor for bridging the 33 and 36 pin in order to switch it on. I have the exact same model and it switches on just connecting them without any resistor. Also, I am looking around to learn on how we can increase the output power to 13.8 v . Thanks
The resistor just provides a signal that tells it to turn on, I think its so the computer can be turned on remotely via a signal. As for bumping up the voltage there's a link in the description detailing how to do that.
@@greaterbridgeportamateurra8429 Thanks. Something strange happened today. Usually it could be switched on by just bridging 33 and 36. Today it didn't work. So I suppose that's the reason why it requires a resistor, instead of a jumper. I have ordered some resistors. I will make a test. Thanks again
@@donnyknows6346 Okay so I have actually received a slew of emails so far, poeple saying they tried this and it didn't work, and then having to bridge different pins and not even use a resistor. I will post their responses on the qrz forum.
@@donnyknows6346 the proper way to turn it on is to connect a 21k-ohm resistor between pin 36 & 37, then connecting pin 34 to the ground will turn it off and on.
Have you figured out a way to adjust the amperage on this unit ??? One of your fellow Ham friends told me to give you a view and about your clever idea......
Well the amperage rating is just an intrinsic value of the circuit design. If you want more than 62amps, you will need a bigger power supply. That bigger one will also have a set maximum rating that can not be changed. Whatever your radio draws, say 20 amps, is what it draws, you don't use the entire 60 amps in most cases.
@@greaterbridgeportamateurra8429 Actually I was meaning adjustable as in lowering the amps, if needed be.... Like to hook up up a small radio that's rated at 3 amps....... I do appreciate your reply ....
@@Budro4764 Why bother? The only time current becomes an issue is if your power supply can't supply enough amps, such as if you tried to run your 3 amp rig from a 1 amp supply.
Great content and useful information but couldn't continue watching after less than a minute. ADHD camera movement is nauseating! Thank you for sharing nevertheless
@1m25s: "...brand new on eBay..." No, they're used. If common sense isn't enough, then it says so right on the listing: "Condition: Used" As they pulled from servers that have lived their lives in dust-free server rooms, they're very clean.
Bill-N6EF-I just picked up 2 460 watt (HSTNS-PD14) power supplies off eBay for cheap ($15 for the 2 with free shipping). The pinouts are the same as with your power supply. Instead of using a resistor, I just shorted the 2 pins through a switch and that worked great. The resistor worked but I wanted to see if just a short would work and it did. The 460 watts only gives me around 35 amps but that's perfect for my go-box project. The voltage isn't high enough to charge my LiFePo4 battery which needs 14.2V+ but it works great for powering my Yaesu FT-857D, Raspberry Pi, and USB-C external monitor plus everything else I need to power. I almost bought one of those PowerWerx power supplies for $119 but when I saw this, I thought I would give the HP power supply option a shot. Glad I found your video first. Thank you!!!
theres a way to bump up the voltage, a few threads on qrz.com, and i'm sure it would do great charging batteries if you do that modification
I have been using these types of power supplies for years. I find the server type are more precise and much quieter.
Good morning KX2U, have you had any issues with only 12.2v on these PS with ham equipment? Thx 73 HC5DX
@@davidsturm9058 Most if not all radios that require 12 volts usually have a range form 11.8 but we will say 12 to 13.8 volts to operate properly. It is basically the current that is critical when trying to transmit. I like these server or PC power supplies since they only output 12 volts and deliver the needed current to RX/TX effectively. I somehow feel the components will last longer with the exact 12 volts or so instead of 13+. I'm sure there is so much more to this but its my personal findings.
Jumping those two pins with a wire accomplishes the job of turning on the power supply and I've left it ON in that "hacked" setup for years without issue, however the proper way to turn it on is to connect a 21k-ohm resistor between pin 36 & 37, then connecting pin 34 to the ground will turn it off and on.
This works really well! I used a 75 ohm resistor because that's what I had lying around and it worked perfectly.
Thanks for the video, just purchased one of these supplies for my ham radio.
Great Video, dude, but for god sake spend $10 and buy a tri-pod. I was seasick by the end.
Yes, it's unwatchable!
Server supplies are miles ahead of the typical competition in design, protection, and efficiency. The thing is computers are constantly being upgraded so there is an abundance. Unfortunately most just go to E-waste recycling.
I just did this project for my radio and it works perfectly.
How long did it power your radio.
@@robert8342-w7x - It still does. Hasn't failed yet. And if it dies, I've got a second one as a back up.
That's great! It would be better if it were 13.8v, but you can't have it *all* for just $12 :) I'll have to give this a try for a project I'm working on. Thanks for posting it :)
link in description
@@greaterbridgeportamateurra8429 missed that. Thanks!
Awesome Video! Good job Brandon!
Thank you
Wow! Thanks for posting this. Very nice power supply for the $$.
Good video.. I did this with two 82 amp psu from a hp server i had, and it had a connector board that made the two psu's work together and balance the load.. pretty cool
WoW... I just sent 30 of these power supplies to the recycle company. Oh, well that's life....
I did this little project and it was lots of fun. Unfortunately my unit was so noisy on 2m that it was unusable. Haven’t tried HF yet. 🤷♂️
Strange mine is OK on HF and 2m!
Use Flat Disc Capacitors, hot to ground, as noise filters. 104's work best. 155 NCO
@@lenpaget6706 Mine too.
Thank you Brandon, well done! What is next?
K1ADT (Tim Burke)
We are taking suggestions lol, tell us what you want to see!
Also there's some more ham radio videos on my personal channel here
I am using an ATX form PSU with around 35 amps running my icom 7300. It shows about 12v on the radio but it is barely above the red on the volt meter. Does the radio want more like 13.5 volts? Am I losing any output power on TX running only 12 volts?
You don't need a resistor, just connecting the two taps together will work
Super vid!! Can you get 13.8 volts
out of one these units? Thanks in
advance for your reply!!
Yes you can I did it, open it up and there's a pot you can turn up the voltage to 12.9 or 13v, if you want to go higher, the pot doesnt have enough range and you have to add a resistor inline with it. Do some googling there are articles with all the details
What is the voltage when drawing max current?
@@Dreamlgider i remember i had checked that i dont remember off hand, it was close to unchanged
I have a power supply 12volt 10amps and my power meter on my qyt8900d goes all random numbers for power what could it be
Good question, shouldn't need many amps to run that small radio. Maybe elaborate on the symptoms for me.
You can use a normal wire it works
Great idea. Do you know what the voltage is on that jumper with the resistor you soldered in place?
0.8 volts
I got (4) of the 1200wqtt HP server supply's I'm trying to sum together on 240v.
Wow, yes ive seen people run a setup like that when buidling a 1.5 or 3kw amplifier
I bought one of these. Same model. When I used the resistor on pins 33 and 36 the power supply would not turn on. I tried several resistors from 100 ohms to 1 K ohm and nothing. With a direct jumper the supply turns on and works fine. Other videos for modifying this supply do not mention the need for a resistor between these pins.
ya some variations use different methods for powering on, theres more info on the qrz forum
That's a hack, and it works, but the proper way to turn it on is to connect a 21k-ohm resistor between pin 36 & 37, then connecting pin 34 to the ground will turn it off and on.
@@snap-off5383 what makes the other way the improper method to turn it on?
Try it for receive on AM .. CW is normally to narrow ... AM would show it more easily for sprogs.
This has been tested for noise by numerous other hams, and the only thing quieter is a battery. Remember, this is for powering servers, high dollar devices which don't need a lot of crap in the power.
Did you modify it to increase the output voltage ? From 12 volts to 13.8 .
No I didn't do that mod, really its only necessary if you want to charge batteries with it, my radios run fine on the 12v. I gave a link in the description to a website showing how to do that mod.
Breakout Board Adapter compatible with HP 460w 750w 1200w Server Power Supply on eBay. Just got a couple of them.
Could you please post a video of how you got it to run at 13.8 v
Great video. I have a question.
How/is there a way to increase the voltage on this unit?
Thx 73 HC5DX
There's a link in the description, I have not tried it, i think you might only need to do that if you are using the ps to charge batteries, most electronics run good on 11.5-16v.
Oh yes. I used a 10 turn 10K ohm variable is series with a 12K fixed rather than the 23K2 specified. Much easier to us the 10 turn to set at 13.8V. ua-cam.com/video/tqDNg_HCvFk/v-deo.html
But where do you get these to start with
ebay
how big is the current thru that resistor? looks a bit over dimensioned. PS now that you have save $80 on the PS please think about investing in a tripod. {head-spin}
haha ya idk the current rating i dont think it really matters, yes I actually just found my tripod!
I've heard that a 1/4W resistor is plenty, the current is miniscule (it's only a control circuit).
Hi, do you know how to turn on the Delta DPS-800ab-11a? Or perhaps the voltage mod. Thank you in advance!
Awesome job! How do you word the lookup to find out what pins to solder to?
Power Supply pinout should give you some results.
So...No on/off power switch?
Yes!
Hi, just wondering why it requires a resistor for bridging the 33 and 36 pin in order to switch it on. I have the exact same model and it switches on just connecting them without any resistor. Also, I am looking around to learn on how we can increase the output power to 13.8 v . Thanks
The resistor just provides a signal that tells it to turn on, I think its so the computer can be turned on remotely via a signal. As for bumping up the voltage there's a link in the description detailing how to do that.
@@greaterbridgeportamateurra8429 Thanks. Something strange happened today. Usually it could be switched on by just bridging 33 and 36. Today it didn't work. So I suppose that's the reason why it requires a resistor, instead of a jumper. I have ordered some resistors. I will make a test. Thanks again
@@donnyknows6346 Okay so I have actually received a slew of emails so far, poeple saying they tried this and it didn't work, and then having to bridge different pins and not even use a resistor. I will post their responses on the qrz forum.
I've found that it works with a plain piece of wire-or a resistor.
@@donnyknows6346 the proper way to turn it on is to connect a 21k-ohm resistor between pin 36 & 37, then connecting pin 34 to the ground will turn it off and on.
Rookie question - when I buy resistors from amazon do I need a 1/4 watt or 1/2 watt resistor?
I am going to say go with the lowest wattage you can find, doesn't really mater either will work.
i see some Nichicon caps in that professional server PS
Have you figured out a way to adjust the amperage on this unit ??? One of your fellow Ham friends told me to give you a view and about your clever idea......
Well the amperage rating is just an intrinsic value of the circuit design. If you want more than 62amps, you will need a bigger power supply. That bigger one will also have a set maximum rating that can not be changed. Whatever your radio draws, say 20 amps, is what it draws, you don't use the entire 60 amps in most cases.
@@greaterbridgeportamateurra8429 Actually I was meaning adjustable as in lowering the amps, if needed be.... Like to hook up up a small radio that's rated at 3 amps....... I do appreciate your reply ....
@@Budro4764 Why bother? The only time current becomes an issue is if your power supply can't supply enough amps, such as if you tried to run your 3 amp rig from a 1 amp supply.
Great content and useful information but couldn't continue watching after less than a minute. ADHD camera movement is nauseating! Thank you for sharing nevertheless
I dont think you should drill through the pads they are usualy 4 or more layer boards
YOU DO NOT NEED THE RESISTOR!
True, I just made a jumper, and then I later cut it and added a switch to turn it on and off.
@1m25s: "...brand new on eBay..." No, they're used. If common sense isn't enough, then it says so right on the listing: "Condition: Used" As they pulled from servers that have lived their lives in dust-free server rooms, they're very clean.
Bonjour. quelle est la valeur de la résistance ? merci
330-1000 ohm
Lovely!!! 73 de IW9HGS