Elecraft Power supply
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I think I would pay $500. I have no idea if it is do-able at that price.
eric VA7DZ How much would you be willing to pay? $300, $500? Willis 'Cookie' Cooke K5EWJ ________________________________ From: eric manning <[hidden email]> To: [hidden email] Sent: Tue, August 10, 2010 10:29:39 AM Subject: Re: [Elecraft] Elecraft Power supply JOHN SAID Elecraft could design a small (RFI quiet) switching PS which would constantly recharge an appropriately sized LiFePO4 battery pack, which in turn would supply the power needed by the K3/P3 combo (i.e. 25 amps). In effect this would replace the large caps in the HPS-1a design, with the LiPo battery. Bottom line: a universal voltage uninterruptible internal PS. I agree, and more to the point -- I would buy one. eric VA7DZ -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. ______________________________________________________________ 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 |
Re: Elecraft Power supply
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Now, why should Elecraft build power supplies?
Let them stick to what we know their good at: making transceivers and ancillaries, kits, ... There is a plethora of good, clean PSUs on the market. Just for info: I have two, rated at 28 A peak, from a German provider but they look as if they were from Jetstream! No problem, no noise, working flawlessly for two years. Purchased at Friedrichshafen Ham Fair for about $ 90 each - so what are we talking about? Our friends at Aptos are busy working on the P3, KPA500, ATU... Why should they go into the trouble of developing yet another PSU when there are so many to choose from? - just for the fun of having a matching box next to the K3/P3? Elecraft is unique - the K3 is unique - anyone can build decent PSUs. Just my two Eurocents!
Richard - HB9ANM
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Ron,
True, but they certainly did look nice. However, "Al-i-ken-su" still builds matching 12v supplies for their 12v radios. Some people like to have a complete "matching" station. If the matching supply should do something more than the typical Aston, then bonus. There have been some very good power supply ideas put forth by the the greater list. Maybe Elecraft will develop and sell one. 73, K1NR On Tue, 10 Aug 2010 15:41:52 -0700 "Ron D'Eau Claire" <[hidden email]> wrote: > The rigs most of us remember with matching power supplies > - the Collins, > Heathkits, etc.- HAD to have custom power supplies > designed to provide > specific voltages and the specific currents needed. > > That went away with the advent of the rigs designed to > run from 13.8 VDC. > > Ron AC7AC > > > 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 --------------------------------------------------------------------- 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:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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In reply to this post by Richard Squire - HB9ANM
Hi Richard:
If you look at my earlier emails, you will see that we are not talking about Elecraft simply re-inventing the wheel, but rather doing something innovative and state of the art in an uninterruptible PS internal to the P3 to enhance the portability of the K3/P3 combo. No extra box (i.e. PS) to carry. This is a big deal for the significant number of us who travel extensively with our K3's. John N6JW
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In reply to this post by AC7AC
The one instance that would justify an Elecraft power supply is if they would produce a 48/60 Volt 200 W replacement for the KPA-3. I'd go for a higher power output and matching supply in a New York minute. The higher voltage amplifier would significantly reduce transmit IMD while the 200 - 250 W output would both obviate the need for an amplifier and make it easier to drive low gain "glass bottle" and ex-USSR ceramic triode amplifiers to the legal output. 73, ... Joe, W4TV On 8/10/2010 6:41 PM, Ron D'Eau Claire wrote: > The rigs most of us remember with matching power supplies - the Collins, > Heathkits, etc.- HAD to have custom power supplies designed to provide > specific voltages and the specific currents needed. > > That went away with the advent of the rigs designed to run from 13.8 VDC. > > Ron AC7AC > > ______________________________________________________________ > 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 > 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 |
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Hi Joe
That would be a fantastic option. I would also like to see the LPA3 use 50 volt or higher FETS as well. This would eliminating all sources of poor TX IMD. This option would certainly make me sell my FT1000D which I keep for the very reasons that you state. I have switched between 200 watts and 1kw on numerous QSO's without telling the other operators, most stations never know that I have even done it nor do they pass any comment on signal strength loss. 73 John > The one instance that would justify an Elecraft power > supply > is if they would produce a 48/60 Volt 200 W replacement > for > the KPA-3. I'd go for a higher power output and > matching > supply in a New York minute. > > The higher voltage amplifier would significantly reduce > transmit > IMD while ______________________________________________________________ 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 |
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In reply to this post by Joe Subich, W4TV-4
Could 200W be done within the K3 form factor (and without the assistance of deafening fans?) Even if the output were still 100W I'd still find it an attractive option, just for the better linearity.
Julian, G4ILO. K2 #392 K3 #222 KX3 #110
* G4ILO's Shack - http://www.g4ilo.com * KComm - http://www.g4ilo.com/kcomm.html * KTune - http://www.g4ilo.com/ktune.html |
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If Elecraft could come up with a replacement for the KPA3 delivering 100-200W with 40dB IMD performance, I would buy one in an instant. Forget about the power supply, that's a commodity.
AB2TC - Knut
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Re: Elecraft Power supply
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In reply to this post by AC7AC
My FT-1000MP (though a wonderful rig) was a chore to switch over 230 VAC/13.8 VDC. But many modern rigs also have (built-in) PSUs for specific voltages: FT-1000 MkV and even the new FT-5000. But for 200 W? Just 3 dB more - hardly noticeable. I run my K3 on a little PSU and on a 12V lead-gel battery when operating portable. Nice! 73 Richard Ron D'Eau Claire [via Elecraft] schrieb: The rigs most of us remember with matching power supplies - the Collins,
Richard - HB9ANM
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