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.

On Feb 12, 8:29*am, "D. Peter Maus"
wrote:
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.

* *

My Icom R75 has been working flawlessly for many years :-)

bpnjensen wrote:
On Feb 12, 8:29 am, "D. Peter
wrote:
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.



My Icom R75 has been working flawlessly for many years :-)

Mine runs constantly. I had it "restored" at ICOM USA a couple years
back. They replaced something in the first mixer I think, (involved
taking shielded circuitry apart-very messy). Today the radio serves as
my 24/7 30 meter autospotter.

www.pskreporter.info

On Feb 13, 8:04*am, dave wrote:
bpnjensen wrote:
On Feb 12, 8:29 am, "D. Peter
wrote:
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.

* *

My Icom R75 has been working flawlessly for many years :-)

Mine runs constantly. *I had it "restored" at ICOM USA a couple years
back. *They replaced something in the first mixer I think, (involved
taking shielded circuitry apart-very messy). *Today the radio serves as
my 24/7 30 meter autospotter.

www.pskreporter.info- Hide quoted text -

- Show quoted text -

Icom is one of very few manufacturers left that are serious as far
as RF design goes. R-75 was not their most sucessful, but it is worth
the money. I believe it is still available at this time. It won't be
produced for much longer.

On Feb 13, 10:40*pm, wrote:
On Feb 13, 8:04*am, dave wrote:





bpnjensen wrote:
On Feb 12, 8:29 am, "D. Peter
wrote:
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.

* *

My Icom R75 has been working flawlessly for many years :-)

Mine runs constantly. *I had it "restored" at ICOM USA a couple years
back. *They replaced something in the first mixer I think, (involved
taking shielded circuitry apart-very messy). *Today the radio serves as
my 24/7 30 meter autospotter.

www.pskreporter.info-Hide quoted text -

- Show quoted text -

* *Icom is one of very few manufacturers left that are serious as far
as RF design goes. R-75 was not their most sucessful, but it is worth
the money. I believe it is still available at this time. It won't be
produced for much longer.

Actually, the only problem with it was the S-AM, which was largely (if
not perfectly) rectified by the Kiwa mods. Otherwise it is a
remarkable performer, and for the general price (even modified) I
think it is hard to beat by any other unit past or present. The only
things standing between me and the most ridiculously weak signals are
my antennas and propagation (and local RFI, of course).

I'd buy one again, no hesitation.

On Feb 12, 11:29*am, "D. Peter Maus"
wrote:
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.

* *

Ah Ha then, maybe dear old former friend wasn't lying then about
modding them. He was always modding something when I was over at the
shop. He sure wanted them back pretty bad. Tough. :-I

On 2/14/10 07:11 , Gregg wrote:
On Feb 12, 11:29 am, "D. Peter
wrote:
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.



Ah Ha then, maybe dear old former friend wasn't lying then about
modding them. He was always modding something when I was over at the
shop. He sure wanted them back pretty bad. Tough. :-I



They're nice supplies. And as you pointed out, you DID work CB
off of one for a couple of years without issue. But that was
intermittent service, which is what most of these supplies are built
for.

Most any supply will work for most applications. It's continuous
draw that does them in. But that's not a surprise. ICOM's, like R71,
R7000, R7100 are renowned for running so damned hot that the back
panel can be too hot to touch. Even the factory recommends going in
periodically and touching up solder joints, checking components for
heat damage.

And ICOM"s not the only one. But that doesn't mean it's not poor
design.

Which CB rig were you running, and what type of antenna did you use?

On Feb 14, 7:15*am, "D. Peter Maus"
wrote:
On 2/14/10 07:11 , Gregg wrote:





On Feb 12, 11:29 am, "D. Peter
wrote:
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.

* *

Ah Ha then, maybe dear old former friend wasn't lying then about
modding them. He was always modding something when I was over at the
shop. *He sure wanted them back pretty bad. Tough. :-I

* *They're nice supplies. And as you pointed out, you DID work CB
off of one for a couple of years without issue. But that was
intermittent service, which is what most of these supplies are built
for.

* *Most any supply will work for most applications. It's continuous
draw that does them in. But that's not a surprise. ICOM's, like R71,
R7000, R7100 are renowned for running so damned hot that the back
panel can be too hot to touch. Even the factory recommends going in
periodically and touching up solder joints, checking components for
heat damage.

* *And ICOM"s not the only one. But that doesn't mean it's not poor
design.

* *Which CB rig were you running, and what type of antenna did you use?

Peter - Shouldn't a 5 amp output supply be fully adequate to support a
CB, even SSB, that would require a draw of maybe 2 amp at transmit?

It is true, the Icoms run hot - specifically with the R75, it is
likely the power brick, which supplies almost 50% more voltage to the
unit that it requires (near 18 volts). Another reason why I want the
external PS.

Bruce