Re: [Elecraft] Reliable DC Power Supply for K3/P3
I'm reading the Astron specification sheets that I've used in commercial radio work for decades. You can see the specs for yourself on-line here: http://www.astroncorp.com/dcdc.html As you can see, an Astron 35 is rated at 25 Amps Continuous and 35 watts ICS. That page also defines ICS as "50% Duty Cycle 5 min. on 5 min. off" That's been the definition of ICS for many decades. 73, Ron AC7AC -Original Message- From: Hisashi T Fujinaka [mailto:ht...@twofifty.com] Sent: Tuesday, November 19, 2013 10:43 AM To: Ron D'Eau Claire Cc: 'Robert Nobis'; elecraft@mailman.qth.net Subject: Re: [Elecraft] Reliable DC Power Supply for K3/P3 As far as I know, they are NOT rated Intermittent COMMERICIAL Service. They're rated Intermittent COMMUNICATIONS Service, which is something they made up. It's way lower than you think. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Reliable DC Power Supply for K3/P3
The model number of an Astron PS is the PEAK supply current. An RS-35M is a 35A PEAK, 25A Continuous supply. The RS-20 is 20 peak, 16 continuous http://www.astroncorp.com/showpage.asp?p=2 73 Gene K1NR On Tue, 19 Nov 2013 08:33:51 -0800 (PST) Hisashi T Fujinaka wrote: > The only thing that bit me: Astron XX does not mean XX > amps. I have an > Astron 25M and I was trying to figure out why my K2/100 > would power off > on 15M at 100W when I finally figured out that that the > Astron 25 is a > 20 amp power supply and my K2 needed a bit more. It would > even fold > back the voltage. After more debugging (and lots of > bypass caps & > chokes and dummy loads and a brand new oscilloscope) and > I found that RF > in the shack could be part of the problem but just > swapping to an Astron > 35M was my fix. > > Unfortunately, the Astron puts out a lot of heat, and my > shack happens > to be in a room that gets pretty warm even with the A/C > on. So I changed > to a 25A switching power supply which unfortunately has a > fan. Now the > tradeoff is heat vs. fan. > > On Tue, 19 Nov 2013, Don Wilhelm wrote: > > > Bob, > > > > The old reliable Astron 35 is a very good linear supply > - I do not have the > > metered version, and mine sits quietly on the floor > under the desk, no need > > to look at meters there. > > > > I also have an Astron SS30 which does a great job at > the workbench. Again no > > need for meters, and even though a switcher, I have not > found any switching > > noise created in the ham bands. > > > > As backups, I have an MFJ 25 amp switching supply and > an Alinco 340M linear - > > the advantages of those supplies is that the output > voltage is front panel > > adjustable. No noticeable noise from the switcher and > the current is more > > than sufficient for the K3/100. > > > > If you have other accessories, you might want to look > at a 35 amp supply, but > > 20 or 25 amps is all that is needed for the K3. > > > > 73, > > Don W3FPR > > > > On 11/19/2013 9:35 AM, Robert Nobis wrote: > >> I m about ready to place an order for a K3 and P3, and > wonder if there are > >> recommendations on a reliable DC power supply for the > Elecraft 100-W > >> transceiver. > >> > >> 73, > >> > >> Bob - N7RJN > >> > >> > >> > __ > >> Elecraft mailing list > >> Home: http://mailman.qth.net/mailman/listinfo/elecraft > >> Help: http://mailman.qth.net/mmfaq.htm > >> Post: mailto:Elecraft@mailman.qth.net > >> > >> This list hosted by: http://www.qsl.net > >> Please help support this email list: > http://www.qsl.net/donate.html > >> > > > > > __ > > Elecraft mailing list > > Home: http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/mmfaq.htm > > Post: mailto:Elecraft@mailman.qth.net > > > > This list hosted by: http://www.qsl.net > > Please help support this email list: > http://www.qsl.net/donate.html > > > > -- > Hisashi T Fujinaka - ht...@twofifty.com > BSEE(6/86) + BSChem(3/95) + BAEnglish(8/95) + MSCS(8/03) > + $2.50 = latte > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: > http://www.qsl.net/donate.html - Web mail provided by NuNet, Inc. The Premier National provider. http://www.nni.com/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Reliable DC Power Supply for K3/P3
I have 2 70 amp supplies a VS and a RS and a RS-12 plus a Samlex 1223/1235M also an MFJ QRP supply for the FT-817 that is used on the road with my KX3. 73, Fred/N0AZZ K3 Ser # 6730--KX3 # 5210--K2/100 # 6470-KAT100 P3/SVGA--KAT500--W2 Amps Elecraft KPA500 HF/6m--Alpha's 9500 HF--87A HF--Mirage B-5030-G 300+w--(2) B-5016-G's 165w 2m -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Josh Fiden Sent: Tuesday, November 19, 2013 12:15 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Reliable DC Power Supply for K3/P3 Hi Bob, Just a note because the RS-50 is a real tank (heavy). I use 2x SS-30M which power 5 high current devices (K3/P3, TS790A, IC910H and 2 brick amps). Each power supply is only capable of powering one of these devices during transmit, but since I don't transmit on multiple radios concurrently, that's not a problem. So, unless you need to transmit on the K3 and VHF radio at the same time, you can get by with a smaller/lighter/cheaper supply. Of course nothing wrong with overhead and room for expansion! 73, Josh W6XU On 11/19/2013 9:54 AM, Robert Nobis wrote: > Everyone, > > Thank you. It looks like using an Astron supply is the way to go. I > will probably go with the RS-50, as I also have a Yaesu 2M/70cm rig to power. > > Incidentally, this mailing list was one of the major reasons why I > decided to get the Elecraft K3/P3 instead of competing products made > in Japan. I have found the members of this list quick to respond to > questions from others, with great answers. > > Again, thank you. > > 73, > > > Bob - N7RJN > > > > On 11/19/13, 7:35 AM, "Robert Nobis" wrote: > >> I m about ready to place an order for a K3 and P3, and wonder if >> there are recommendations on a reliable DC power supply for the >> Elecraft 100-W transceiver. >> >> 73, >> >> Bob - N7RJN >> >> >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net Please help support this >> email list: http://www.qsl.net/donate.html > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net Please help support this email > list: http://www.qsl.net/donate.html > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html - No virus found in this message. Checked by AVG - www.avg.com Version: 2013.0.3426 / Virus Database: 3629/6846 - Release Date: 11/18/13 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Reliable DC Power Supply for K3/P3
Let's end this thread for now. Its a repeat of one that just ran recently and can easily be found in the archives at http://www.elecraft.com/elist.html . It is near at the max posting in a short period limit for a single topic. 73, Eric List Moderator elecraft.com On 11/19/2013 10:34 AM, Phil Hystad wrote: I use an RS-50M and yes it is indeed a real heavy tank. But, then again, it sits on the floor, it is not in the way at all, and it is on all the time (except when I am away from the house for more than a couple of days). I use it to feed a West Mountain Radio Rig Runner 8012. Perfect set up for my QTH. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Reliable DC Power Supply for K3/P3
As far as I know, they are NOT rated Intermittent COMMERICIAL Service. They're rated Intermittent COMMUNICATIONS Service, which is something they made up. It's way lower than you think. On Tue, 19 Nov 2013, Ron D'Eau Claire wrote: Astrons are rated ICS (Intermittent Commercial Service). Old timers in the Ham hobby will remember that as ICAS (Intermittent Commercial and Amateur Service). For example, the Astron spec sheet for the Astron 20 will show a continuous current rating of 16 amps and an ICAS rating of 20 amps. One can demand 20 amps peak for SSB or even CW operation and even normal high-duty-cycle operation with a few minutes at 20 amps and then a few minutes in standby. But, beyond that, it's likely to overheat and shut down to protect itself. 73, Ron AC7AC -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Hisashi T Fujinaka Sent: Tuesday, November 19, 2013 8:34 AM To: Robert Nobis Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] Reliable DC Power Supply for K3/P3 The only thing that bit me: Astron XX does not mean XX amps. I have an Astron 25M and I was trying to figure out why my K2/100 would power off on 15M at 100W when I finally figured out that that the Astron 25 is a 20 amp power supply and my K2 needed a bit more. It would even fold back the voltage. After more debugging (and lots of bypass caps & chokes and dummy loads and a brand new oscilloscope) and I found that RF in the shack could be part of the problem but just swapping to an Astron 35M was my fix. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html -- Hisashi T Fujinaka - ht...@twofifty.com BSEE(6/86) + BSChem(3/95) + BAEnglish(8/95) + MSCS(8/03) + $2.50 = latte __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Reliable DC Power Supply for K3/P3
I use an RS-50M and yes it is indeed a real heavy tank. But, then again, it sits on the floor, it is not in the way at all, and it is on all the time (except when I am away from the house for more than a couple of days). I use it to feed a West Mountain Radio Rig Runner 8012. Perfect set up for my QTH. I also have the RS-30M which I use as my "portable" power supply. By portable, I mean portable here at this QTH such as in the garage when doing experiments or building something, out on the back patio when I am operating "remote" in the sun-shine, or sitting (also on the floor) in a convenient location where I use it to drive my Li-ion battery charger. The RS-50M via the Rig Runner drives about six or seven different rigs -- all plugged into the power (Anderson connectors) but obviously not all on. I have a variety of 12 volt DC things that came with their own wall wart but I prefer to use them with the Rig Runner so they now all sport Anderson Power Pole connectors. 73, phil, K7PEH On Nov 19, 2013, at 10:14 AM, Josh Fiden wrote: > Hi Bob, > > Just a note because the RS-50 is a real tank (heavy). I use 2x SS-30M which > power 5 high current devices (K3/P3, TS790A, IC910H and 2 brick amps). Each > power supply is only capable of powering one of these devices during > transmit, but since I don't transmit on multiple radios concurrently, that's > not a problem. > > So, unless you need to transmit on the K3 and VHF radio at the same time, you > can get by with a smaller/lighter/cheaper supply. Of course nothing wrong > with overhead and room for expansion! > > 73, > Josh W6XU > > On 11/19/2013 9:54 AM, Robert Nobis wrote: >> Everyone, >> >> Thank you. It looks like using an Astron supply is the way to go. I will >> probably go with the RS-50, as I also have a Yaesu 2M/70cm rig to power. >> >> Incidentally, this mailing list was one of the major reasons why I decided >> to get the Elecraft K3/P3 instead of competing products made in Japan. I >> have found the members of this list quick to respond to questions from >> others, with great answers. >> >> Again, thank you. >> >> 73, >> >> >> Bob - N7RJN >> >> >> >> On 11/19/13, 7:35 AM, "Robert Nobis" wrote: >> >>> I m about ready to place an order for a K3 and P3, and wonder if there are >>> recommendations on a reliable DC power supply for the Elecraft 100-W >>> transceiver. >>> >>> 73, >>> >>> Bob - N7RJN >>> >>> >>> __ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:Elecraft@mailman.qth.net >>> >>> This list hosted by: http://www.qsl.net >>> Please help support this email list: http://www.qsl.net/donate.html >> >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Reliable DC Power Supply for K3/P3
On 11/19/2013 6:35 AM, Robert Nobis wrote: I m about ready to place an order for a K3 and P3, and wonder if there are recommendations on a reliable DC power supply for the Elecraft 100-W transceiver. For the last ten years, I've been powering all the 12V gear from a deep cycle battery (Costco's largest) that I float charge from a regulated power supply. The result is a rather robust UPS for the key elements of the ham station. While the Astron supplies have a well-deserved reputation for reliability (and I've used several of them), my present choice is a 20A Power Werx switching supply that I bought to take on a DX trip several years ago. It's RF quiet, the regulation voltage is 13.8V as shipped, and it can be varied (internal pot) to adjust to the needs of the battery you're using. Such a system is also easily adapted to solar by the addition of solar cells and a charge regulator, and I did that recently. 73, Jim K9YC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Reliable DC Power Supply for K3/P3
Hi Bob, Just a note because the RS-50 is a real tank (heavy). I use 2x SS-30M which power 5 high current devices (K3/P3, TS790A, IC910H and 2 brick amps). Each power supply is only capable of powering one of these devices during transmit, but since I don't transmit on multiple radios concurrently, that's not a problem. So, unless you need to transmit on the K3 and VHF radio at the same time, you can get by with a smaller/lighter/cheaper supply. Of course nothing wrong with overhead and room for expansion! 73, Josh W6XU On 11/19/2013 9:54 AM, Robert Nobis wrote: Everyone, Thank you. It looks like using an Astron supply is the way to go. I will probably go with the RS-50, as I also have a Yaesu 2M/70cm rig to power. Incidentally, this mailing list was one of the major reasons why I decided to get the Elecraft K3/P3 instead of competing products made in Japan. I have found the members of this list quick to respond to questions from others, with great answers. Again, thank you. 73, Bob - N7RJN On 11/19/13, 7:35 AM, "Robert Nobis" wrote: I m about ready to place an order for a K3 and P3, and wonder if there are recommendations on a reliable DC power supply for the Elecraft 100-W transceiver. 73, Bob - N7RJN __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Reliable DC Power Supply for K3/P3
Everyone, Thank you. It looks like using an Astron supply is the way to go. I will probably go with the RS-50, as I also have a Yaesu 2M/70cm rig to power. Incidentally, this mailing list was one of the major reasons why I decided to get the Elecraft K3/P3 instead of competing products made in Japan. I have found the members of this list quick to respond to questions from others, with great answers. Again, thank you. 73, Bob - N7RJN On 11/19/13, 7:35 AM, "Robert Nobis" wrote: >I m about ready to place an order for a K3 and P3, and wonder if there are >recommendations on a reliable DC power supply for the Elecraft 100-W >transceiver. > >73, > >Bob - N7RJN > > >__ >Elecraft mailing list >Home: http://mailman.qth.net/mailman/listinfo/elecraft >Help: http://mailman.qth.net/mmfaq.htm >Post: mailto:Elecraft@mailman.qth.net > >This list hosted by: http://www.qsl.net >Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Reliable DC Power Supply for K3/P3
Astrons are rated ICS (Intermittent Commercial Service). Old timers in the Ham hobby will remember that as ICAS (Intermittent Commercial and Amateur Service). For example, the Astron spec sheet for the Astron 20 will show a continuous current rating of 16 amps and an ICAS rating of 20 amps. One can demand 20 amps peak for SSB or even CW operation and even normal high-duty-cycle operation with a few minutes at 20 amps and then a few minutes in standby. But, beyond that, it's likely to overheat and shut down to protect itself. 73, Ron AC7AC -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Hisashi T Fujinaka Sent: Tuesday, November 19, 2013 8:34 AM To: Robert Nobis Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] Reliable DC Power Supply for K3/P3 The only thing that bit me: Astron XX does not mean XX amps. I have an Astron 25M and I was trying to figure out why my K2/100 would power off on 15M at 100W when I finally figured out that that the Astron 25 is a 20 amp power supply and my K2 needed a bit more. It would even fold back the voltage. After more debugging (and lots of bypass caps & chokes and dummy loads and a brand new oscilloscope) and I found that RF in the shack could be part of the problem but just swapping to an Astron 35M was my fix. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Reliable DC Power Supply for K3/P3
On 11/19/2013 10:41 AM, Jim - KE8G wrote: Hi Bob, This is a question that comes up from time-to-time and you will get a multitude of answers! Personally, I have a couple of the Astron Power Supplies RS-35M and think they are fantastic. One of these is more than enough to run 24x7 and handle the K3/100 with plenty to spare. Just my .2 cents. 73 de Jim - KE8G I'm using a cheap switching PS . . . a SPS-400MA (12V, 40A): http://www.409shop.com/409shop_product.php?id=104969 I have NO affiliation with that web site nor the manufacturer of the PS! I also see those guys no longer have it "The item you are trying to view does not exist or was suspended by the site admin." I'm sure it can be found elsewhere on the Internet of from local re-sellers. Anyhow, it replaced an Astron 1.5 years ago and is 1/4 the size or smaller. Been running 24/7 since I got it and it powers the entire shack. No birdies, although there is a knob to "move" them if they are there. I took a chance on buying this (less than $200) and I'm very happy. 90-95% efficiency with switching supplies, very small and not expensive. I wasn't optimistic, but it chugs right along . . . The Astron is now the backup. 73, Paul VE1DX __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Reliable DC Power Supply for K3/P3
The only thing that bit me: Astron XX does not mean XX amps. I have an Astron 25M and I was trying to figure out why my K2/100 would power off on 15M at 100W when I finally figured out that that the Astron 25 is a 20 amp power supply and my K2 needed a bit more. It would even fold back the voltage. After more debugging (and lots of bypass caps & chokes and dummy loads and a brand new oscilloscope) and I found that RF in the shack could be part of the problem but just swapping to an Astron 35M was my fix. Unfortunately, the Astron puts out a lot of heat, and my shack happens to be in a room that gets pretty warm even with the A/C on. So I changed to a 25A switching power supply which unfortunately has a fan. Now the tradeoff is heat vs. fan. On Tue, 19 Nov 2013, Don Wilhelm wrote: Bob, The old reliable Astron 35 is a very good linear supply - I do not have the metered version, and mine sits quietly on the floor under the desk, no need to look at meters there. I also have an Astron SS30 which does a great job at the workbench. Again no need for meters, and even though a switcher, I have not found any switching noise created in the ham bands. As backups, I have an MFJ 25 amp switching supply and an Alinco 340M linear - the advantages of those supplies is that the output voltage is front panel adjustable. No noticeable noise from the switcher and the current is more than sufficient for the K3/100. If you have other accessories, you might want to look at a 35 amp supply, but 20 or 25 amps is all that is needed for the K3. 73, Don W3FPR On 11/19/2013 9:35 AM, Robert Nobis wrote: I m about ready to place an order for a K3 and P3, and wonder if there are recommendations on a reliable DC power supply for the Elecraft 100-W transceiver. 73, Bob - N7RJN __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html -- Hisashi T Fujinaka - ht...@twofifty.com BSEE(6/86) + BSChem(3/95) + BAEnglish(8/95) + MSCS(8/03) + $2.50 = latte __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Reliable DC Power Supply for K3/P3
Another vote for the Astron linear 35A supply. Mine is an RS-35 (no meters), I've had it for years and it just runs and runs. Many will suggest switching supplies because they are lighter and less expensive for a given current rating, but they are less reliable and there is always the potential for noise. In my opinion, of course! On 11/19/2013 6:35 AM, Robert Nobis wrote: I m about ready to place an order for a K3 and P3, and wonder if there are recommendations on a reliable DC power supply for the Elecraft 100-W transceiver. 73, Bob - N7RJN -- Vic, K2VCO Fresno CA http://www.qsl.net/k2vco/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Reliable DC Power Supply for K3/P3
Hi Bob I personally run quite a few shack DC items with mine including a 300w 2m amp along with a battery charger. The charger is one that charges an Optima back-up battery while the power is on keeps it charged quite well. After going through about 7 or 8 supplies most I still have I bought a Astron VS-70M and takes care of everything plus with the variable supply you can set the voltage you want. If you just want a supply for those items the Astron RS-35M is a great supply. 73, Fred/N0AZZ K3 Ser # 6730--KX3 # 5210--K2/100 # 6470-KAT100 P3/SVGA--KAT500--W2 Amps Elecraft KPA500 HF/6m--Alpha's 9500 HF--87A HF--Mirage B-5030-G 300+w--(2) B-5016-G's 165w 2m -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Robert Nobis Sent: Tuesday, November 19, 2013 8:35 AM To: elecraft@mailman.qth.net Subject: [Elecraft] Reliable DC Power Supply for K3/P3 I m about ready to place an order for a K3 and P3, and wonder if there are recommendations on a reliable DC power supply for the Elecraft 100-W transceiver. 73, Bob - N7RJN __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html - No virus found in this message. Checked by AVG - www.avg.com Version: 2013.0.3426 / Virus Database: 3629/6846 - Release Date: 11/18/13 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Reliable DC Power Supply for K3/P3
Bob, The old reliable Astron 35 is a very good linear supply - I do not have the metered version, and mine sits quietly on the floor under the desk, no need to look at meters there. I also have an Astron SS30 which does a great job at the workbench. Again no need for meters, and even though a switcher, I have not found any switching noise created in the ham bands. As backups, I have an MFJ 25 amp switching supply and an Alinco 340M linear - the advantages of those supplies is that the output voltage is front panel adjustable. No noticeable noise from the switcher and the current is more than sufficient for the K3/100. If you have other accessories, you might want to look at a 35 amp supply, but 20 or 25 amps is all that is needed for the K3. 73, Don W3FPR On 11/19/2013 9:35 AM, Robert Nobis wrote: I m about ready to place an order for a K3 and P3, and wonder if there are recommendations on a reliable DC power supply for the Elecraft 100-W transceiver. 73, Bob - N7RJN __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Reliable DC Power Supply for K3/P3
Hi Bob, This is a question that comes up from time-to-time and you will get a multitude of answers! Personally, I have a couple of the Astron Power Supplies RS-35M and think they are fantastic. One of these is more than enough to run 24x7 and handle the K3/100 with plenty to spare. Just my .2 cents. 73 de Jim - KE8G Robert Nobis wrote: > I m about ready to place an order for a K3 and P3, and wonder if there are > recommendations on a reliable DC power supply for the Elecraft 100-W > transceiver. > > 73, > > Bob - N7RJN > > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Reliable DC Power Supply for K3/P3
I m about ready to place an order for a K3 and P3, and wonder if there are recommendations on a reliable DC power supply for the Elecraft 100-W transceiver. 73, Bob - N7RJN __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
