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.

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?

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.

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.

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

On Feb 12, 5:16*am, dave wrote:
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

So I have noticed! But the Astrons, in general, have a loyal
following.

On 2/12/10 10:13 , bpnjensen wrote:

Pyramids are not especially popular with the Amateur Radio crowd:

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

So I have noticed! But the Astrons, in general, have a loyal
following.


I did some research into the Pyramid supplies. As I said earlier,
they were not built for continuous service. Apparently, at any load.
Shame, too. With modification, they can be a pretty decent supply.

Apparently Pyramid has been taking design tips for ICOM.

Bob Dobbs wrote:

bpnjensen wrote:
On Feb 12, 5:16 am, dave wrote:


Pyramids are not especially popular with the Amateur Radio crowd:

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

So I have noticed! But the Astrons, in general, have a loyal
following.

Only a couple complaints w/Astrons:
1 - They seem to run hot (to the touch) in the summer,
but an external fan alleviates that just fine.
2 - The internal light in the illuminated power switch is very touchy,
sometimes failing to even come on after awhile.

Otherwise Astrons are long lived hard working units,
generally regarded as well worth their initial cost.
That's why they are so commonly found in repeater vaults.

If I recall correctly that's exactly where my RS-50M went, into a repeater
vault.

I used to use it when I was running 170 watts or so on 2 meters.

dxAce
Michigan
USA

On Feb 12, 8:16*am, dave wrote:
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

I would not use them unless it is supporting casually used gear, like
small car stereos.