K3 power supply
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I've been re-considering my power supply. I'm using a Heathkit PS
which is a 20 amp linear supply. I just looked inside it and it's definitely showing the effects of age. It hasn't been used in quite a long time as I've used a TenTec supply with my Corsair & Omni since day one. Ihave a few things runing on 12V and they probably draw 2-5 amps on a steady draw. With the K3 I suppose my requirement would be 22A so I'm looking at a 27 or so amp load. I'm currently using wall warts to supply the 12V peripherals and would like to unclutter my station and meet all my "12V" needs. I'm considering several power supplies & looking at eHam reviews I see Jetstream. They have high reviews and make a nicely affordable 28A for $79 and 45 amp power supply for $149. Anyone have any experience with these & the K3? I'm thinking the larger one might be a good choice in that the components wouldn't be stressed at my station. I do prefer low stress... Any thoughts on these supplies? Hope Santa was good to you! Gary KA1J _______________________________________________ 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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Gary,
I've been using a Progressive Dynamics RV supply, based on recommendations from WB6ZQZ and others here: http://www.hsfdg.org/wiki/DcPowerSystem I first used an AGM battery and a Battery Tender / 5A solar panel system, but found a bit of sag. I still use this for backup. So I switched to a Gamma HPS-1a, which I still have and use for traveling, but it didn't do well for me on PSK or MFSK because the average current draw is greater than 5A, which is what it has. But recently I switched the the Progressive Dynamics supply, in parallel with the 80AH AGM (still with 5A solar backup) and so far it's working well for me. Leigh/WA5ZNU K3 #51 K2 #3121 KX1 #712 > I've been re-considering my power supply. I'm using a Heathkit PS > which is a 20 amp linear supply. I just looked inside it and it's > definitely showing the effects of age. It hasn't been used in quite a > long time as I've used a TenTec supply with my Corsair & Omni since > day one. > > Ihave a few things runing on 12V and they probably draw 2-5 amps on a > steady draw. With the K3 I suppose my requirement would be 22A so I'm > looking at a 27 or so amp load. I'm currently using wall warts to > supply the 12V peripherals and would like to unclutter my station and > meet all my "12V" needs. > > I'm considering several power supplies & looking at eHam reviews I > see Jetstream. They have high reviews and make a nicely affordable > 28A for $79 and 45 amp power supply for $149. > > Anyone have any experience with these & the K3? > > I'm thinking the larger one might be a good choice in that the > components wouldn't be stressed at my station. I do prefer low > stress... > > Any thoughts on these supplies? > > Hope Santa was good to you! > > Gary > KA1J > _______________________________________________ > 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 > _______________________________________________ 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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In reply to this post by Gary Smith
I use a JTPS28M that I have had for two years. I usually run two HF transceivers and a two meter transceiver on receive. For the past 5 months, one of the HF transceivers has been an Elecraft K3. Of course, I never transmit on more than one. If I were to buy another supply, it would be a JetStream.
Willis 'Cookie' Cooke K5EWJ --- On Thu, 12/25/08, Gary Smith <[hidden email]> wrote: > From: Gary Smith <[hidden email]> > Subject: [Elecraft] K3 power supply > To: [hidden email] > Date: Thursday, December 25, 2008, 8:32 PM > I've been re-considering my power supply. I'm using > a Heathkit PS > which is a 20 amp linear supply. I just looked inside it > and it's > definitely showing the effects of age. It hasn't been > used in quite a > long time as I've used a TenTec supply with my Corsair > & Omni since > day one. > > Ihave a few things runing on 12V and they probably draw 2-5 > amps on a > steady draw. With the K3 I suppose my requirement would be > 22A so I'm > looking at a 27 or so amp load. I'm currently using > wall warts to > supply the 12V peripherals and would like to unclutter my > station and > meet all my "12V" needs. > > I'm considering several power supplies & looking at > eHam reviews I > see Jetstream. They have high reviews and make a nicely > affordable > 28A for $79 and 45 amp power supply for $149. > > Anyone have any experience with these & the K3? > > I'm thinking the larger one might be a good choice in > that the > components wouldn't be stressed at my station. I do > prefer low > stress... > > Any thoughts on these supplies? > > Hope Santa was good to you! > > Gary > KA1J > _______________________________________________ > 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 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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In reply to this post by Gary Smith
Astron RS-50 may be the one. No worries here, with a ton if extras
powered from it. At a 40 Amp load, I see a 0.15V droop to 13.5VDC. No stress. 73, matt On Thu, 25 Dec 2008 23:32:23 -0500, you wrote: >I've been re-considering my power supply. I'm using a Heathkit PS >which is a 20 amp linear supply. I just looked inside it and it's >definitely showing the effects of age. It hasn't been used in quite a >long time as I've used a TenTec supply with my Corsair & Omni since >day one. > >Ihave a few things runing on 12V and they probably draw 2-5 amps on a >steady draw. With the K3 I suppose my requirement would be 22A so I'm >looking at a 27 or so amp load. I'm currently using wall warts to >supply the 12V peripherals and would like to unclutter my station and >meet all my "12V" needs. > >I'm considering several power supplies & looking at eHam reviews I >see Jetstream. They have high reviews and make a nicely affordable >28A for $79 and 45 amp power supply for $149. > >Anyone have any experience with these & the K3? > >I'm thinking the larger one might be a good choice in that the >components wouldn't be stressed at my station. I do prefer low >stress... > >Any thoughts on these supplies? > >Hope Santa was good to you! > >Gary >KA1J >_______________________________________________ >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 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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A conventional Astron is hard to beat. I've had three
running here for a number of years without being turned off. I've also sold/installed hundreds of 'em in two-way radio service. I wouldn't be interested in -anyone's- switching supply. 73! Ken Kopp - K0PP [hidden email] _______________________________________________ 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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In reply to this post by Matt Zilmer
I use a big battery that I bought at Costco for $75, float-charged
by a 10A switching power supply that I bought at a hamfest for $10. I had to add RFI filtering to it. This keeps up with my K3 driving my Titan amp in very heavy contesting (30-35w from the K3), and I can easily get full output from the K3 when I run barefoot. This rig has two HUGE advantages. First, it's VERY efficient, only drawing about 400mA from the power line when it's floating the battery at about 4A and running the radio and accessories. My Astrons draw about 5 times that just sitting there with no load. With California rates for electrical power, that's a very nice difference. Second, it's a pretty beefy UPS! 73, Jim K9YC _______________________________________________ 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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In reply to this post by Gary Smith
Gary
I was sold on the idea of switched mode power supplies and mainly used one of the later model Samlex 1223 supplies with the factory fitted extra EMC components. You've guessed, it was fine for a while then I noticed a wandering "burble" on 80m and it was radiated from the PSU. Maybe the components deteriorated or something changed on the antenna, in any event it's no longer in the shack! I've gone back to a good old linear supply, it's a Racal branded one from Newmar Electronics in Newport Beach, CA. I bought it as new old stock (NOS) here in the UK (Racal were a UK military/commercial radio manufacturer), it's model 115-12-35 CD and rated for 13.8 V at 35 Amp continuous in temps to 85C ambient, it includes a crowbar, is designed with transmitters in mind and also has over temp shut down. A real power supply! I use it to supply both my K3 and an Icom IC910HX for VHF/UHF. 73 Dave, G4AON K3/100 #80 -------------------- I've been re-considering my power supply. I'm using a Heathkit PS which is a 20 amp linear supply. I just looked inside it and it's definitely showing the effects of age. It hasn't been used in quite a long time as I've used a TenTec supply with my Corsair & Omni since day one. <SNIP> _______________________________________________ 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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In reply to this post by Leigh L. Klotz Jr WA5ZNU
Leigh and All,
I have a Jetstream PS, but it's one of their smaller ones. However, I find it to be quite competent and quiet. My impression is that those good reviews are accurate. Dave W7AQK ----- Original Message ----- From: "Leigh L. Klotz, Jr WA5ZNU" <[hidden email]> To: <[hidden email]> Cc: <[hidden email]> Sent: Thursday, December 25, 2008 10:02 PM Subject: Re: [Elecraft] K3 power supply > Gary, > I've been using a Progressive Dynamics RV supply, based on recommendations > from WB6ZQZ and others here: > http://www.hsfdg.org/wiki/DcPowerSystem > > I first used an AGM battery and a Battery Tender / 5A solar panel system, > but found a bit of sag. > I still use this for backup. > So I switched to a Gamma HPS-1a, which I still have and use for traveling, > but it didn't do well for me on PSK or MFSK because the average current > draw is greater than 5A, which is what it has. > But recently I switched the the Progressive Dynamics supply, in parallel > with the 80AH AGM (still with 5A solar backup) and so far it's working > well for me. > > Leigh/WA5ZNU > K3 #51 > K2 #3121 > KX1 #712 >> I've been re-considering my power supply. I'm using a Heathkit PS which >> is a 20 amp linear supply. I just looked inside it and it's definitely >> showing the effects of age. It hasn't been used in quite a long time as >> I've used a TenTec supply with my Corsair & Omni since day one. >> >> Ihave a few things runing on 12V and they probably draw 2-5 amps on a >> steady draw. With the K3 I suppose my requirement would be 22A so I'm >> looking at a 27 or so amp load. I'm currently using wall warts to supply >> the 12V peripherals and would like to unclutter my station and meet all >> my "12V" needs. >> >> I'm considering several power supplies & looking at eHam reviews I see >> Jetstream. They have high reviews and make a nicely affordable 28A for >> $79 and 45 amp power supply for $149. >> Anyone have any experience with these & the K3? >> >> I'm thinking the larger one might be a good choice in that the components >> wouldn't be stressed at my station. I do prefer low stress... >> >> Any thoughts on these supplies? >> >> Hope Santa was good to you! >> >> Gary >> KA1J >> _______________________________________________ >> 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 >> > > _______________________________________________ > 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 _______________________________________________ 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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In reply to this post by Jim Brown-10
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In reply to this post by Gary Smith
Thanks for the off & on list suggestions.
>From comments regarding my queery and my own understandings it seems that for a number of reasons a Linear supply might be the best. I'm doing my darndest to keep the noise level low on low bands and I'd like a crowbar in the circuit so I went with the linear Astron VS-35M which has 25A continuous and 35A intermittent and crowbar. At $175 & $8 shipping from KJI Electronics it was More pricey than I wanted to go but that was the best deal I could find and now I have a solid PS for the K3 Thanks for the input! Gary KA1J _______________________________________________ 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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