K3 / K3S Power Supply
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Seeking recommendations for a quality power supply for my future K3 / K3S.
I prefer rack mounted and am considering the Astron RM-60M. Is there a better rack-mounted supply? Comments? 73 John, K7JKZ ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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I have an Astron though not rack mounted.
It's an RS-35M and has been on for 11 years continuously save the occasional power outage. How far away from the radio position is the rack? The power cable supplied with the K3/S is about 5ft and I think #12 diameter conductor. On 11/25/2015 7:55 PM, John Maass wrote: > Seeking recommendations for a quality power supply for my future K3 / K3S. > I prefer rack mounted and am considering the Astron RM-60M. Is there a > better rack-mounted supply? Comments? > 73 > John, K7JKZ > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] -- R. Kevin Stover AC0H ARRL FISTS #11993 SKCC #215 NAQCC #3441 --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by John Maass
I've used a pair of RS-35A for years - one is at least 30 years old and predated the K3. In all that time I've had exactly one failure - lost a diode in one of the bridges in the newer (10 year old) supply. The RS-35A is rugged and quiet (no noise like most switching supplies) - I have no doubt that an RM-60M with its 50A ICAS rating will do just fine for a K3/K3S. 73, ... Joe, W4TV On 11/25/2015 8:55 PM, John Maass wrote: > Seeking recommendations for a quality power supply for my future K3 / K3S. > I prefer rack mounted and am considering the Astron RM-60M. Is there a > better rack-mounted supply? Comments? > 73 > John, K7JKZ > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] > Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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I have an Astron 20 and a 35 - for over 30 years they have been running.
That said, they are heavy to annually move around, clean, and check the connections - and gaining weight annually (perhaps related to my advancing age). I took Elecraft at faith and purchased the PowerWerx switching supply. So far, I am very satisfied with same. And, it is small and light-weight, quiet behind the desk, and silent in the RF arena also. Bill W2BLC K-Line ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by Joe Subich, W4TV-4
I have a RS-70A that I turned on 13 years ago; it has 'suffered' through many house power losses here in the country, but has not missed a beat over the years. Except for my amplifier, it powers everything else in my ham setup. IMO, the Astron's are unbeatable!
73, Tom - W4BQF -----Original Message----- From: Elecraft [mailto:[hidden email]] On Behalf Of Joe Subich, W4TV Sent: Thursday, November 26, 2015 8:37 AM To: [hidden email] Subject: Re: [Elecraft] K3 / K3S Power Supply I've used a pair of RS-35A for years - one is at least 30 years old and predated the K3. In all that time I've had exactly one failure - lost a diode in one of the bridges in the newer (10 year old) supply. The RS-35A is rugged and quiet (no noise like most switching supplies) - I have no doubt that an RM-60M with its 50A ICAS rating will do just fine for a K3/K3S. 73, ... Joe, W4TV On 11/25/2015 8:55 PM, John Maass wrote: > Seeking recommendations for a quality power supply for my future K3 / K3S. > I prefer rack mounted and am considering the Astron RM-60M. Is there a > better rack-mounted supply? Comments? > 73 > John, K7JKZ > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net Please help support this email > list: http://www.qsl.net/donate.html Message delivered to > [hidden email] > Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by Bill-3
Just do a Google search on Remote 2 meter repeaters" DC power and you'll have all the information you ever want to know about Astron power supplies with sound derating guidelines
Jim W6AIM . -------- Original message -------- From: Bill <[hidden email]> Date: 11/26/2015 6:04 AM (GMT-08:00) To: [hidden email] Subject: Re: [Elecraft] K3 / K3S Power Supply I have an Astron 20 and a 35 - for over 30 years they have been running. That said, they are heavy to annually move around, clean, and check the connections - and gaining weight annually (perhaps related to my advancing age). I took Elecraft at faith and purchased the PowerWerx switching supply. So far, I am very satisfied with same. And, it is small and light-weight, quiet behind the desk, and silent in the RF arena also. Bill W2BLC K-Line ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by Chester Alderman
Yep and unless they've changed their design recently, all their linear regulator supplies have as their heart, the venerable '723 chip for voltage and current regulation. If I remember correctly, that IC was introduced about 50 years ago !
I know just about everybody makes 723's now, but who was the original supplier? I'm guessing Fairchild since I think it was originally the µ723. 73, Chas -----Original Message----- From: Elecraft [mailto:[hidden email]] On Behalf Of Chester Alderman Sent: Thursday, November 26, 2015 9:23 AM To: [hidden email] Subject: Re: [Elecraft] K3 / K3S Power Supply I have a RS-70A that I turned on 13 years ago; it has 'suffered' through many house power losses here in the country, but has not missed a beat over the years. Except for my amplifier, it powers everything else in my ham setup. IMO, the Astron's are unbeatable! 73, Tom - W4BQF ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by Kevin Stover
John, I asked the same question of the fine Elecraft folks and they recommended Power Werx. Been very happy with it for the KX3 and K3S. http://www.powerwerx.com/power-supplies/
David A., KC0XT, LA > > On 11/25/2015 7:55 PM, John Maass wrote: >> Seeking recommendations for a quality power supply for my future K3 / K3S. >> I prefer rack mounted and am considering the Astron RM-60M. Is there a >> better rack-mounted supply? Comments? >> 73 >> John, K7JKZ >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:[hidden email] >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to [hidden email] > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] David Ahrendts [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by Chester Alderman
I also have an RS-70 and I think it’s been turned on even longer than that ...
Recently, though, as part of going more minimalist, I put it into semi-retirement and bought the PowerWerx unit. In the shack, i’ve never heard a whisper of RF from it. But I did find that if I set the PowerWerx outside, on a 30 foot power cord, next to my K3, and almost directly under a Buddipole dipole, that I can hear it switching away. I’ve since put some ferrites on both the power cord and DC leads but haven’t had a chance to check out the difference. Mostly because I’m having too much fun outside now with a KX3 on battery :-) Grant NQ5T K3 #2091, KX3 #8342 > On Nov 26, 2015, at 8:22 AM, Chester Alderman <[hidden email]> wrote: > > I have a RS-70A that I turned on 13 years ago; it has 'suffered' through many house power losses here in the country, but has not missed a beat over the years. Except for my amplifier, it powers everything else in my ham setup. IMO, the Astron's are unbeatable! > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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