I picked up one of these things at a local surplus store. Noisy as hell. Not a good idea.
Lew N6LEW > On Aug 1, 2016, at 7:35 PM, Gary K9GS <[email protected]> wrote: > > Or better yet, do what other SS amp manufacturer's are doing, use surplus HP > Proliant server power supplies? Here's a 3KW one/50V for $30.00. There are > warehouses full of these things available. > > http://www.ebay.com/itm/HP-ESP120-2950W-Power-Supply-226519-501-406424-001-253232-001/391114939625?_trksid=p2047675.c100005.m1851&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D37577%26meid%3D7a666926576944989b8c1bc8c2e7ec53%26pid%3D100005%26rk%3D1%26rkt%3D6%26sd%3D122038440431 > > <http://www.ebay.com/itm/HP-ESP120-2950W-Power-Supply-226519-501-406424-001-253232-001/391114939625?_trksid=p2047675.c100005.m1851&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D37577%26meid%3D7a666926576944989b8c1bc8c2e7ec53%26pid%3D100005%26rk%3D1%26rkt%3D6%26sd%3D122038440431> > > They have other current capacities available. These can be run in series or > parallel too. > > Sure beats re-inventing the wheel. > > > On 8/1/2016 1:04 AM, Bob Nielsen wrote: >> Although it would add to the cost, building in a 12 to 60 volt DC-DC >> converter would avoid compromising the performance. >> >> 73, Bob N7XY >> >> On 7/31/16 7:15 PM, Ron D'Eau Claire wrote: >>> Dan, the issue is producing more than 100 watts from a 12-volt supply >>> without unacceptable levels of IMD. That's why Elecraft used a 60-volt >>> power supply in the KPA500. >>> >>> If the gain restrictions are removed, Elecraft (and anyone else) could >>> produce a 500 watt amplifier that worked from an exciter with any level of >>> drive, even less than 1 watt. >>> >>> 73, Ron AC7AC >>> >>> >>> >>> -----Original Message----- >>> From: Elecraft [mailto:[email protected]] On Behalf Of Dan >>> Baker >>> Sent: Sunday, July 31, 2016 5:31 PM >>> To: [email protected] >>> Subject: [Elecraft] The amp I would like to see Elecraft build. >>> >>> Once the FCC removes the 15 dB gain limitation on amateur amplifiers >>> *Petition for Rule Making* (*RM-11767* >>> <http://apps.fcc.gov/ecfs/comment/view?id=60001536394>) Then Elecraft can >>> build us a 12 volt version of the KPA500. That would give us the ability to >>> run our KX’s as a very effective mobile rig. This would compliment >>> Elecrafts theme of products much more than a legal limit amp, that really >>> you can find anywhere. >>> >>> 73, Dan KM6CQ >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:[email protected] >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to [email protected] <mailto:[email protected]> > > -- > 73, > > Gary K9GS > > Greater Milwaukee DX Association: http://www.gmdxa.org <http://www.gmdxa.org/> > Society of Midwest Contesters: http://www.w9smc.com <http://www.w9smc.com/> > CW Ops #1032 http://www.cwops.org <http://www.cwops.org/> > > ************************************************ > > > --- > This email has been checked for viruses by Avast antivirus software. > https://www.avast.com/antivirus <https://www.avast.com/antivirus> > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > <http://mailman.qth.net/mailman/listinfo/elecraft> > Help: http://mailman.qth.net/mmfaq.htm <http://mailman.qth.net/mmfaq.htm> > Post: mailto:[email protected] <mailto:[email protected]> > > This list hosted by: http://www.qsl.net <http://www.qsl.net/> > Please help support this email list: http://www.qsl.net/donate.html > <http://www.qsl.net/donate.html> > Message delivered to [email protected] <mailto:[email protected]> Lew Phelps N6LEW Pasadena, CA DM04wd Elecraft K3-10 / KXV144 / XV432 Yaesu FT-7800 [email protected] www.n6lew.us Generalized Law of Entropy: Sooner or later, everything that has been put together will fall apart. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
