Power Supply Question?

#383008

I have a Pyramid PS4KX 3 Amplifier Power Supply, On my Uniden PC787 I am wondering is that ok for my radio?

#383009

if the radio is working as it should that means it is working. if the radio is losing power no it is not. I personally do not like a power supply that is just enough to power a radio. it puts a lot of stress on the power supply and it will quit faster than one that is not pushed to its limit. I run a 14 amp power supply with my radios. this way it is not pushed to its limits. just run the one you have and if it goes out just get a larger one when and if it goes out.

#383010

sonoma wrote:if the radio is working as it should that means it is working. if the radio is losing power no it is not. I personally do not like a power supply that is just enough to power a radio. it puts a lot of stress on the power supply and it will quit faster than one that is not pushed to its limit. I run a 14 amp power supply with my radios. this way it is not pushed to its limits. just run the one you have and if it goes out just get a larger one when and if it goes out.

Got any recommendation? I live in Canada.

#383011

A simple way to know if the power supply is big enough is while talking and the lights dim, it's too small. Pop the fuse and see the amperage and I usually double that, then it's big enough for the radio.

3's

Greg

#383017

The specs on the radio show
Current Drain
TX: AM Full Modulation: 2.1A (max)
RX: At no signal: 400mA
--
Specs on the PS shows 3A continuus, 4A surge.

I wouldn't try to run anything additional off the PS however.

#383018

here is a good power supply and its stack-able also: https://www.amazon.com/MegaWa ... wer+supply

#383019

lights don't go dim even when I key up, Does this mean everything is ok?

#383020

What do you mean ? On all my radios my lights do not dim when i key up so im assuming your alright If your light dims that usualy means you are drawing more power than the supply is putting out

#383026

ill take a video, Then show you ok and post it here.

-- Friday, 03 February 2017, 21:45 PM --

Here is a video of me keying up. [youtube][/youtube]

#383032

looks like your good to me !

#383033

Ok thanks a lot, I really appreciate the help from you guys. Wish you all were on where I can talk to you all like on cb radio.

#383034

Like sonoma said run it till it quits. I have a megawatt 400-12. 36 amp version hooked to a cobra29 with a 100w amp. power supply is set at 13.82 (just because it's touchy) when keyed up and talking only drops to 13.79. Hope this helps and have fun. D-minus

#383037

Yeah, it'll work fine!

#383120

Thanks to all of you for the help, I really appreciate it.

-- Friday, 17 February 2017, 22:45 PM --

I just bought a PC68LTD and the meter, Dims only when I talk is that right? Also the PC787 never dimmed this this ok?

#383378

if your lights dim when you key up The power supplied to the radio is not enough. One test test to key up and then check the voltage on the power supply,

#383381

I do believe I stated that in an earlier post. I think the 787 didn't dim because it uses LED's for illumination where the 68 still has the old wheat incandescent bulbs. I would check the voltage like was said, you will probably see it dipping to 12v when saying "aahhh" in the mic. If it is the Pyramid PS you said earlier it probably not big enough for sure.

3's

Greg

#383391

I put a 5amp on it and, Well it is running better now i might get a better amp if I keep having issues thanks.

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