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Power Supply Questions

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Norm Klieman

Power Supply Questions

I wanted to thank everyone for their feedback. Just
about everyone told me to look at reviews on EHam.

Does anyone in the group have any personal experience
using or owning the Workman PS 35 power supply?

Any recommendations for a good 35 amp Linear supply
would be helpful too.

Thanks again for any feedback.

Best 73's -- Norm K9NK

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Timothy Raymer-2

Re: Power Supply Questions

Norm,

Fairly hard to beat an Astron Power Supply. The RS-35M is the workhorse I would recommend. Meters to tell you what is going on, and it will run the any of the 100W Elecraft radios with some headroom to spare.

Tim Raymer
73 de KA0OUV

>>> Norm Klieman <[hidden email]> 06/12/2008 09:24 >>>

Any recommendations for a good 35 amp Linear supply
would be helpful too.

Thanks again for any feedback.

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w7go

Re: Power Supply Questions

Second the Astron RS-35M. Have had one for over 20 years and still works
perfectly.

73,

Tony W7GO

Timothy Raymer wrote:

> Norm,
>
> Fairly hard to beat an Astron Power Supply. The RS-35M is the workhorse I would recommend. Meters to tell you what is going on, and it will run the any of the 100W Elecraft radios with some headroom to spare.
>
> Tim Raymer
> 73 de KA0OUV
>
>
>
>>>> Norm Klieman <[hidden email]> 06/12/2008 09:24 >>>
>>>>
>
> Any recommendations for a good 35 amp Linear supply
> would be helpful too.
>
> Thanks again for any feedback.
>
>
>
>
>
> _______________________________________________
> Elecraft mailing list
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Fern Rivard

Re: Power Supply Questions

I would much recommend the new Samlex SEC-1235M switching power supply. It is very compact switching power supply with both volt and amp meters on the front panel. It's a lot more efficient than the old linear style of power supplies. Have been using one with my new K3 and it works great.
73 from Fern VE7GZ

----- Original Message -----
From: "Tony Morgan" <[hidden email]>
To: <[hidden email]>
Sent: Thursday, June 12, 2008 10:26 AM
Subject: Re: [Elecraft] Power Supply Questions

Second the Astron RS-35M. Have had one for over 20 years and still works
perfectly.

73,

Tony W7GO

Timothy Raymer wrote:

Kurt Pawlikowski

Re: Power Supply Questions

In reply to this post by Norm Klieman

Norm,

Of course, the biggest issue with a switching supply is to be
confident that it won't generate lots of birdies. That's one of the
things you need to be aware of when reading PS reviews and manufacture
"hype"...

Regards,

kurtt

Kurt Pawlikowski, AKA WB9FMC
The Pinrod Corporation
[hidden email]
(773) 284-9500
http://pinrod.com

Norm Klieman wrote:

> I wanted to thank everyone for their feedback. Just
> about everyone told me to look at reviews on EHam.
>
> Does anyone in the group have any personal experience
> using or owning the Workman PS 35 power supply?
>
> Any recommendations for a good 35 amp Linear supply
> would be helpful too.
>
> Thanks again for any feedback.
>
> Best 73's -- Norm K9NK
>
>
> _______________________________________________
> Elecraft mailing list
> Post to: [hidden email]
> You must be a subscriber to post to the list.
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>
>

michael taylor-3

Re: Power Supply Questions

On Thu, Jun 12, 2008 at 12:46 PM, Kurt Pawlikowski <[hidden email]> wrote:
>
> Of course, the biggest issue with a switching supply is to be confident
> that it won't generate lots of birdies. That's one of the things you need to

And the fact is most of the amateur radio oriented ones don't generate
lots of birdies. Here's the closing paragraph from a survey review
(QST Janurary 2000) of several amateur oriented switching power
supplies;

"For the majority of the casual fixed station and portable operators,
nearly any of the currently available switching power supplies should
provide acceptable performance. Carefully consider your operating
requirements and "weigh" your options."

The QST survey has more details about particular switching supplies
including the 23A sibling of the mentioned 35A Samlex.

-Michael, VE3TIX
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Jim Wiley-2

Re: Power Supply Questions

In reply to this post by Timothy Raymer-2

For those of you who might be interested, no matter what power supply
you are using, I have a nifty little circuit that converts a standard 1
mA DC milliampere meter to an expanded scale voltmeter reading 11 to 16
volts, with 13.5 volts at top center of the meter scale. Linear readout
too, no compressed readings at one end of the scale. I have converted
the Astron RM-60 that I use for my ham shack to this method, and I can
tell you that the expanded scale sure makes setting the DC power bus to
the correct value a lot easier.

I also show a simple method for converting another 1 mA meter to an
ammeter (or you could use a switch select amps or volts using just one
meter).

If there are no meters in your supply, then you can use this circuit to
build up a set. Surplus milliammeters are reasonably easy to find.

Send me an e-mail off list and I will respond with the details. The
conversion costs about $10 in parts (not including meters), and you will
need to recalibrate the scale of whatever meter you end up using (change
the markings) - a not too difficult process. Note that I will have to
finish creating a write-up of this, and I am right now swamped with
creating new Extra class exams for our VEC, but when that's done, I will
be able to put some time on this.

- Jim, KL7CC

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n6wg

Re: Power Supply Questions

In reply to this post by Fern Rivard

Fern
Since you say it is a switcher, have you
been able to identify any noise as coming from it?
Thanks and 73
Bob N6WG

----- Original Message -----
From: "Fern Rivard" <[hidden email]>
To: "Tony Morgan" <[hidden email]>;
<[hidden email]>
Sent: Thursday, June 12, 2008 9:38 AM
Subject: Re: [Elecraft] Power Supply Questions

I would much recommend the new Samlex SEC-1235M switching power
supply. It is very compact switching power supply with both volt and
amp meters on the front panel. It's a lot more efficient than the old
linear style of power supplies. Have been using one with my new K3 and
it works great.
73 from Fern VE7GZ

----- Original Message -----
From: "Tony Morgan" <[hidden email]>
To: <[hidden email]>
Sent: Thursday, June 12, 2008 10:26 AM
Subject: Re: [Elecraft] Power Supply Questions

Second the Astron RS-35M. Have had one for over 20 years and still
works
perfectly.

73,

Tony W7GO

Timothy Raymer wrote:
> Norm,
>
> Fairly hard to beat an Astron Power Supply. The RS-35M is the
workhorse I would recommend. Meters to tell you what is going on, and
it will run the any of the 100W Elecraft radios with some headroom to
spare.

>
> Tim Raymer
> 73 de KA0OUV
>
>
>
>>>> Norm Klieman <[hidden email]> 06/12/2008 09:24 >>>
>>>>
>
> Any recommendations for a good 35 amp Linear supply
> would be helpful too.
>
> Thanks again for any feedback.
>
>
>
>
>
> _______________________________________________
> Elecraft mailing list
> Post to: [hidden email]
> You must be a subscriber to post to the list.
> Subscriber Info (Addr. Change, sub, unsub etc.):
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>
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> Elecraft web page: http://www.elecraft.com
>
>

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Fern Rivard

Re: Power Supply Questions

That power supply is absolutely quiet and no issues with noise. Fern

----- Original Message -----
From: "Bob Tellefsen" <[hidden email]>
To: "Fern Rivard" <[hidden email]>; "Tony Morgan" <[hidden email]>; <[hidden email]>
Sent: Thursday, June 12, 2008 11:21 AM
Subject: Re: [Elecraft] Power Supply Questions

Fern
Since you say it is a switcher, have you
been able to identify any noise as coming from it?
Thanks and 73
Bob N6WG

----- Original Message -----
From: "Fern Rivard" <[hidden email]>
To: "Tony Morgan" <[hidden email]>;
<[hidden email]>
Sent: Thursday, June 12, 2008 9:38 AM
Subject: Re: [Elecraft] Power Supply Questions

I would much recommend the new Samlex SEC-1235M switching power
supply. It is very compact switching power supply with both volt and
amp meters on the front panel. It's a lot more efficient than the old
linear style of power supplies. Have been using one with my new K3 and
it works great.
73 from Fern VE7GZ

----- Original Message -----
From: "Tony Morgan" <[hidden email]>
To: <[hidden email]>
Sent: Thursday, June 12, 2008 10:26 AM
Subject: Re: [Elecraft] Power Supply Questions

Second the Astron RS-35M. Have had one for over 20 years and still
works
perfectly.

73,

Tony W7GO

Timothy Raymer wrote:
> Norm,
>
> Fairly hard to beat an Astron Power Supply. The RS-35M is the
workhorse I would recommend. Meters to tell you what is going on, and
it will run the any of the 100W Elecraft radios with some headroom to
spare.

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--
No virus found in this incoming message.
Checked by AVG Free Edition.
Version: 7.5.516 / Virus Database: 270.0.0/1489 - Release Date:
6/7/2008 11:17 AM

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w6jd

Re: Power Supply Questions

In reply to this post by Norm Klieman

Even if you don't "hear" any hash from a switcher, I would suggest
you look at the transmitted spectrum. As a backup supply I have an
SEC-1223 which "sounds" okay but the transmitted signal is just
trashed. I love my Astron RS-35!

Doug
W6JD

-------------- Original message --------------
From: "Fern Rivard" <[hidden email]>

> That power supply is absolutely quiet and no issues with noise. Fern
>
>
> ----- Original Message -----
> From: "Bob Tellefsen"
> To: "Fern Rivard" ; "Tony Morgan"
> <[hidden email]>;
> Sent: Thursday, June 12, 2008 11:21 AM
> Subject: Re: [Elecraft] Power Supply Questions
>
>
> Fern
> Since you say it is a switcher, have you
> been able to identify any noise as coming from it?
> Thanks and 73
> Bob N6WG
>
> ----- Original Message -----
> From: "Fern Rivard"
> To: "Tony Morgan" <[hidden email]>;
>
> Sent: Thursday, June 12, 2008 9:38 AM
> Subject: Re: [Elecraft] Power Supply Questions
>
>
> I would much recommend the new Samlex SEC-1235M switching power
> supply. It is very compact switching power supply with both volt and
> amp meters on the front panel. It's a lot more efficient than the old
> linear style of power supplies. Have been using one with my new K3 and
> it works great.
> 73 from Fern VE7GZ
>
>
> ----- Original Message -----
> From: "Tony Morgan" <[hidden email]>
> To:
> Sent: Thursday, June 12, 2008 10:26 AM
> Subject: Re: [Elecraft] Power Supply Questions
>
>
> Second the Astron RS-35M. Have had one for over 20 years and still
> works
> perfectly.
>
> 73,
>
> Tony W7GO
>
> Timothy Raymer wrote:
> > Norm,
> >
> > Fairly hard to beat an Astron Power Supply. The RS-35M is the
> workhorse I would recommend. Meters to tell you what is going on, and
> it will run the any of the 100W Elecraft radios with some headroom to
> spare.
> >
> > Tim Raymer
> > 73 de KA0OUV
> >
> >
> >
> >>>> Norm Klieman 06/12/2008 09:24 >>>
> >>>>
> >
> > Any recommendations for a good 35 amp Linear supply
> > would be helpful too.
> >
> > Thanks again for any feedback.
> >
> >
> >
> >
> >
> > _______________________________________________
> > Elecraft mailing list
> > Post to: [hidden email]
> > You must be a subscriber to post to the list.
> > Subscriber Info (Addr. Change, sub, unsub etc.):
> > http://mailman.qth.net/mailman/listinfo/elecraft
> >
> > Help: http://mailman.qth.net/subscribers.htm
> > Elecraft web page: http://www.elecraft.com
> >
> >
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>
>
> --
> No virus found in this incoming message.
> Checked by AVG Free Edition.
> Version: 7.5.516 / Virus Database: 270.0.0/1489 - Release Date:
> 6/7/2008 11:17 AM
>
>
> _______________________________________________
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>
>
> --
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> Checked by AVG Free Edition.
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> AM
>
>
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Stephen Prior

Re: Power Supply Questions

I have used my 1223 on a number of different rigs including the K3 without
any issues that I'm aware of. What exactly do you mean Doug by the
transmitted signal being trashed? I've never had a bad signal quality
report and the dc from the psu on a scope looks fine.

Stephen G4SJP

On 12/06/2008 22:33, "[hidden email]" <[hidden email]> wrote:

> Even if you don't "hear" any hash from a switcher, I would suggest
> you look at the transmitted spectrum. As a backup supply I have an
> SEC-1223 which "sounds" okay but the transmitted signal is just
> trashed. I love my Astron RS-35!
>
> Doug
> W6JD
>

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Paul-285

Re: Power Supply Questions

In reply to this post by Fern Rivard

Fern Rivard wrote:
> I would much recommend the new Samlex SEC-1235M switching power
> supply. It is very compact switching power supply with both volt
> and amp meters on the front panel. It's a lot more efficient than
> the old linear style of power supplies. Have been using one with my
> new K3 and it works great.
> 73 from Fern VE7GZ

Or the Astron SS-30M (Just open it up and tighten all the PC Board
mounting screws.)

Paul N4LCD

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