- 1. [Amps] Dedicated RF (score: 1)
- Author: Dan Simmonds <info@dedicatedrf.com>
- Date: Sat, 28 Jul 2012 16:30:22 -0400
- Guys, Target price on the US model right now is between $6,500 and $7,000. No kit option is planned. A preliminary layout of the RF section was uploaded to the site this afternoon. Dan KK3AN ________
- /archives//html/Amps/2012-07/msg00342.html (7,625 bytes)
- 2. Re: [Amps] Dedicated RF (score: 1)
- Author: Dan Simmonds <info@dedicatedrf.com>
- Date: Sun, 29 Jul 2012 14:25:29 -0400
- 20 kV (working limit) / 28 kV (test limit) vacuum caps Custom-built edge-wound tank roller inductor (1/16" x 3/8" silver plated Beryllium) Toroidal HV transformer with 97% efficiency + or - Remote di
- /archives//html/Amps/2012-07/msg00355.html (9,049 bytes)
- 3. Re: [Amps] Dedicated RF (score: 1)
- Author: Dan Simmonds <info@dedicatedrf.com>
- Date: Sun, 29 Jul 2012 17:16:24 -0400
- Actually, this amp is intended for commercial just the same as it is Amateur (firmware frequency locked for hams). Dan KK3AN _______________________________________________ Amps mailing list Amps@con
- /archives//html/Amps/2012-07/msg00365.html (9,202 bytes)
- 4. Re: [Amps] Dedicated RF (score: 1)
- Author: Dan Simmonds <info@dedicatedrf.com>
- Date: Sun, 29 Jul 2012 19:59:30 -0400
- Gary, this is a myth, quite frankly, saying the days of this tube are numbered. Do you have facts to back this up? From experience I'll share with you that I can cut a Purchase Order to Eimac (CPI) t
- /archives//html/Amps/2012-07/msg00371.html (10,586 bytes)
- 5. Re: [Amps] Dedicated RF / tube query (score: 1)
- Author: Dan Simmonds <info@dedicatedrf.com>
- Date: Sun, 29 Jul 2012 23:54:12 -0400
- Hello Leigh, Yes - 100% certain on this. I speak with the production people at CPI / Eimac often on the phone. I also know one of the engineers there. Also, the packing lists I receive from Eimac wit
- /archives//html/Amps/2012-07/msg00389.html (7,790 bytes)
- 6. Re: [Amps] Dedicated RF / tube query (score: 1)
- Author: Dan Simmonds <info@dedicatedrf.com>
- Date: Mon, 30 Jul 2012 01:32:06 -0400
- Sadly, the vacuum caps are sourced from overseas. Jennings in California quoted me $1,100 US apiece for US-made caps, and I politely declined. The Tune cap is rated at the higher (20 Kv) working volt
- /archives//html/Amps/2012-07/msg00393.html (9,896 bytes)
- 7. Re: [Amps] Dedicated RF / tube query (score: 1)
- Author: Dan Simmonds <info@dedicatedrf.com>
- Date: Sat, 04 Aug 2012 17:28:02 -0400
- We have roughed-out a plenum & PS design for a 1x8877 & a 2x8877, in addition to the 2x & 3x3CX800A7 - utilizing the same chassis. The 3CPX800 is taking priority now over the 8877. Dan Simmonds _____
- /archives//html/Amps/2012-08/msg00100.html (7,800 bytes)
- 8. Re: [Amps] How to get the blue markings off of aluminum stock (score: 1)
- Author: Dan Simmonds <info@dedicatedrf.com>
- Date: Tue, 22 Jan 2013 16:46:14 -0500
- I use "Brakleen" brake parts cleaner for stubborn removal jobs. It will eat though most anything that alcohol and gasoline won't touch. Available at NAPA / Walmart, etc. Dan Simmonds How do you get t
- /archives//html/Amps/2013-01/msg00130.html (8,677 bytes)
- 9. Re: [Amps] Chimney Material (score: 1)
- Author: Dan Simmonds <info@dedicatedrf.com>
- Date: Fri, 01 Mar 2013 11:44:34 -0500
- Hi Joe, I've been using high-temp (500 Deg F) red silicone turbocharger hose material for this. It comes in a 36" length and you can just cut it with a sharp knife to any length. Makes a nicer / roun
- /archives//html/Amps/2013-03/msg00013.html (7,436 bytes)
- 10. [Amps] 50V FET output transformer (score: 1)
- Author: Dan Simmonds <info@dedicatedrf.com>
- Date: Tue, 22 Jul 2014 13:36:39 -0400
- _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
- /archives//html/Amps/2014-07/msg00097.html (6,886 bytes)
- 11. [Amps] 50V FET output transformer (score: 1)
- Author: Dan Simmonds <info@dedicatedrf.com>
- Date: Tue, 22 Jul 2014 13:49:00 -0400
- Has anyone built an output transformer for a 50V LDMOS FET (Freescale device) that could lend some help with this? By my estimation a 16:1 constructed of (2) 4:1 Guanellas should give a satisfactory
- /archives//html/Amps/2014-07/msg00098.html (6,875 bytes)
- 12. Re: [Amps] 50V FET output transformer (score: 1)
- Author: Dan Simmonds <info@dedicatedrf.com>
- Date: Wed, 23 Jul 2014 15:51:19 -0400
- _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
- /archives//html/Amps/2014-07/msg00101.html (7,442 bytes)
- 13. Re: [Amps] 50V FET output transformer (score: 1)
- Author: Dan Simmonds <info@dedicatedrf.com>
- Date: Wed, 23 Jul 2014 15:52:16 -0400
- _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
- /archives//html/Amps/2014-07/msg00102.html (7,427 bytes)
- 14. Re: [Amps] HV Diodes (score: 1)
- Author: Dan Simmonds <info@dedicatedrf.com>
- Date: Thu, 16 Oct 2014 21:38:32 -0400
- Perhaps, yes. But regardless of how inexpensive the Chinese amps may be, at the end of the day they will still be Chinese amps, metaphorically speaking. Exciting things to come in 2015 in the QRO sol
- /archives//html/Amps/2014-10/msg00101.html (8,814 bytes)
- 15. Re: [Amps] HV Diodes (score: 1)
- Author: Dan Simmonds <info@dedicatedrf.com>
- Date: Fri, 17 Oct 2014 12:31:00 -0400
- we have been waiting on that dual 8877 amp with roller inductor for some time now. Many die hard hams would prefer that over solid state. --Original Message-- From: Dan Simmonds [1]<info@dedicatedrf.
- /archives//html/Amps/2014-10/msg00121.html (11,250 bytes)
- 16. Re: [Amps] HV Diodes (score: 1)
- Author: Dan Simmonds <info@dedicatedrf.com>
- Date: Fri, 17 Oct 2014 12:35:04 -0400
- Hi Roger, To sell to us they don't need certification. Of course they'd sell a lot more with certification and dealers which would push the price up a notch. I'd rather have a true QRO SS amp that'd
- /archives//html/Amps/2014-10/msg00122.html (11,235 bytes)
- 17. Re: [Amps] HV Diodes (score: 1)
- Author: Dan Simmonds <info@dedicatedrf.com>
- Date: Fri, 17 Oct 2014 12:47:41 -0400
- Jim, It can be done, it's just chosen not to be. I received some custom plotting back from ST Micro a month ago showing the reflection tolerance of one of their dual gemini 100v FETs fed with just 70
- /archives//html/Amps/2014-10/msg00124.html (9,234 bytes)
- 18. Re: [Amps] Solid State Amps (score: 1)
- Author: Dan Simmonds <info@dedicatedrf.com>
- Date: Fri, 17 Oct 2014 15:29:54 -0400
- Hi Lee, Good point. Two comments: With pre-planning, this parts obscurity dilemma can be mitigated significantly by selecting more popular parts sharing commonality. You mention displays....a perfect
- /archives//html/Amps/2014-10/msg00130.html (8,770 bytes)
- 19. Re: [Amps] Solid State Amps (score: 1)
- Author: Dan Simmonds <info@dedicatedrf.com>
- Date: Sun, 19 Oct 2014 23:03:16 -0400
- Manfred, Give me a day or two here and I'll transcript this video for you and type it out in text. Dan KK3AN At Ham Radio Friedrichshafen this past June, I gave a talk (approx. 30 min.) on the openHP
- /archives//html/Amps/2014-10/msg00206.html (8,979 bytes)
This search system is powered by
Namazu