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Old February 12th 10, 01:02 AM posted to rec.radio.shortwave
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Default Recommendations - 12 / 13.8v Power Supply, ~ 5 amp?

bpnjensen wrote:
On Feb 11, 6:59 am, dave wrote:
bpnjensen wrote:
Hi, folks - If you please, I am looking for recommendations for a PS
that will provide the usual 12 or 13.8v, about 5 - 7 amps be plenty.
Love to get rid of the myriad 500 ma wall-warts. I'd rather not have
it be too expensive, but it would be nice if it didn't send spikes,
blow up or cause hash or electrical hum. Any thoughts? There is a
plethora of manufacturers and models, reviews are all over the place,
I have no idea which ones are OK. Pyramid makes a 5-amp job that
would be great, if it's any good. I also see Radio Shack PSs at about
twice that current. Would a switching PS be better?
Thanks in advance ~
Bruce Jensen

I use an Astron switch mode supply. It makes no noise. It makes no
heat. Linear supplies waste electricity.


No hash or other electrical noise artifacts?



None that I've noticed. These are specifically sold for Amateur Radio.
From what I've heard the Astrons and the MFJs are both electrically quiet.
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Old February 12th 10, 03:51 AM posted to rec.radio.shortwave
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Default Recommendations - 12 / 13.8v Power Supply, ~ 5 amp?

On Feb 11, 5:02*pm, dave wrote:
bpnjensen wrote:
On Feb 11, 6:59 am, dave wrote:
bpnjensen wrote:
Hi, folks - If you please, I am looking for recommendations for a PS
that will provide the usual 12 or 13.8v, about 5 - 7 amps be plenty.
Love to get rid of the myriad 500 ma wall-warts. *I'd rather not have
it be too expensive, but it would be nice if it didn't send spikes,
blow up or cause hash or electrical hum. *Any thoughts? *There is a
plethora of manufacturers and models, reviews are all over the place,
I have no idea which ones are OK. *Pyramid makes a 5-amp job that
would be great, if it's any good. *I also see Radio Shack PSs at about
twice that current. *Would a switching PS be better?
Thanks in advance ~
Bruce Jensen
I use an Astron switch mode supply. *It makes no noise. *It makes no
heat. *Linear supplies waste electricity.


No hash or other electrical noise artifacts?


None that I've noticed. *These are specifically sold for Amateur Radio.
* From what I've heard the Astrons and the MFJs are both electrically quiet.


Thanks - interesting. I'll look into those too.
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Old February 12th 10, 01:16 PM posted to rec.radio.shortwave
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Default Recommendations - 12 / 13.8v Power Supply, ~ 5 amp?

bpnjensen wrote:


None that I've noticed. These are specifically sold for Amateur Radio.
From what I've heard the Astrons and the MFJs are both electrically quiet.


Thanks - interesting. I'll look into those too.


Pyramids are not especially popular with the Amateur Radio crowd:

http://www.eham.net/reviews/products/20
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