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Galaxy dx2547 power supply
- Thread starter Larry A McClanahan
- Start date
And I only output 1 watt am and 12 ssb. Nothing is being stressed.
QUOTE="Larry A McClanahan, post: 634604, member: 52646"]I ALWAYS upgrade the regulator to an NTE37.[/QUOTE]
QUOTE="Larry A McClanahan, post: 634604, member: 52646"]I ALWAYS upgrade the regulator to an NTE37.[/QUOTE]
You have me at a loss.
You increased the voltage on a supply to get "more power" in your first post but your running it stock SSB and 1 watt on AM?
It's your radio but if all you wanted to do was 1 watt on AM and 12 on SSB then all you had to do was turn it down.
I assumed the point of volting the radio was to get more power?
What I miss?
You increased the voltage on a supply to get "more power" in your first post but your running it stock SSB and 1 watt on AM?
It's your radio but if all you wanted to do was 1 watt on AM and 12 on SSB then all you had to do was turn it down.
I assumed the point of volting the radio was to get more power?
What I miss?
Yes. The purpose was not to get more power. The purpose was to bring the operating voltage up to where components are happier. They seem to run smoother Bolder a little louder than running it at a low voltage. They have a jack on the back of the DX 2547 to run it on DC like a mobile if one chose to do that.
No; they run it @ 13.8v.
I've worked on a few black box Galaxy radios (Saturn, etc). One of the most common problem with them I've seen, is that the owners turn up the power supply to some big number (14.5-15v) - thinking they are going to get every watt out of it. Problem is, these cheap switching type power supplies don't like being run like that. The voltage will collapse under load ('TX') and lose voltage regulation. Radio goes into 'la-la land' in TX. Only one cure: turn it back down to 13.8v and hope the power supply didn't get buggered. True for black box RCI and Ranger radios as well.
Oh - as for NTE parts? I would pass on buying them and get a good branded part. NTE buys and re-brands second rate devices and charges you a premium price for the convenience. Food for thought.
I've worked on a few black box Galaxy radios (Saturn, etc). One of the most common problem with them I've seen, is that the owners turn up the power supply to some big number (14.5-15v) - thinking they are going to get every watt out of it. Problem is, these cheap switching type power supplies don't like being run like that. The voltage will collapse under load ('TX') and lose voltage regulation. Radio goes into 'la-la land' in TX. Only one cure: turn it back down to 13.8v and hope the power supply didn't get buggered. True for black box RCI and Ranger radios as well.
Oh - as for NTE parts? I would pass on buying them and get a good branded part. NTE buys and re-brands second rate devices and charges you a premium price for the convenience. Food for thought.
This mod was in relation to the Galaxy dx2547 power supply. It will allow you to get 13.8 volts. What you set it at is up to you. Strictly based upon 13.6 not being enough and how to acquire such.
Some people will volt it no matter what you tell them.
Even after you explain that all of the supplies in these types of radios are linear supplies and your just beating on them for no reason.
Your modern radios have loads of 7805/7808/7812 linear regulators or possibly some LDO types like the 1117 series and adding just one volt can really increase heat dissipation in these devices.
Even after you explain that all of the supplies in these types of radios are linear supplies and your just beating on them for no reason.
Your modern radios have loads of 7805/7808/7812 linear regulators or possibly some LDO types like the 1117 series and adding just one volt can really increase heat dissipation in these devices.
It allowed me to set the power supply .6 volts higher. I doubt seriously I'm causing a problem. The radio inside is nothing but a dx959 which should run off 13.8 volts.
Some of the guys on here will take a simple beneficial modification and turn it into some big dangerous disaster that's going to blow the radio up. Geez.
Some of the guys on here will take a simple beneficial modification and turn it into some big dangerous disaster that's going to blow the radio up. Geez.
As you should. The mod simply allows you to turn the power supply up to 13.8. It comes from the factory maxed out at 13.6. It allowed me to turn the power supply Up. 2. How is that in any way harmful to the radio or the power supply.
Would you like to know why it's an issue?
Nobody here disagreed.
See my first question.
Look at the last few threads here in the modification section as of this writing.
Pros and cons weighed.
Discussion of the idea, use case, problems and solutions.
I don't get the impression that anyone is trying to be a negative Nancy.
I also don't mean to be snarky but you don't seem to receive criticism well.
You should be saying something like...
"Okay, I see there may be issues with this. How can we solve it and turn it into a win-win?"