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Total 43 documents matching your query.

1. [Amps] Homebrew is back.. (score: 1): Author: Lou Spradling <w4eku@bellsouth.net>; Date: Mon, 28 Mar 2011 09:02:05 -0700 (PDT); It has been several years since I have attempted to "build something",; and in that frame I become an (operator). A real pleasure to pursue the hobby with researching material for 10-160 linear amps; /archives//html/Amps/2011-03/msg00224.html (6,847 bytes)
2. Re: [Amps] Homebrew is back.. (score: 1): Author: "Roger (sub1)" <sub1@rogerhalstead.com>; Date: Mon, 28 Mar 2011 14:11:34 -0400; There are people on here who know a lot more about tubes than I, but: Unfortunately even though "The Handbook" still shows projects using it, the only 4CX1600B's left are the ones "a few" might have; /archives//html/Amps/2011-03/msg00225.html (9,200 bytes)
3. Re: [Amps] Homebrew is back.. (score: 1): Author: "Diane & Edward Swynar" <deswynar@xplornet.ca>; Date: Mon, 28 Mar 2011 14:38:12 -0500; Hi Roger et al, I use a pair of 813s in parallel grounded-grid service here in my homebrewed KW amplifier, and--I'm blushing as I type this!--but I have NEVER EVER purchased any of the jugs that are; /archives//html/Amps/2011-03/msg00227.html (10,473 bytes)
4. Re: [Amps] Homebrew is back.. (score: 1): Author: "Roger (sub1)" <sub1@rogerhalstead.com>; Date: Mon, 28 Mar 2011 15:04:37 -0400; I forgot the old 813. I have 3 of them up on the shelf and keep looking for more. I used to run the "old legal limit" with a pair of them as you describe. I ran into a guy on 40 a while back who clai; /archives//html/Amps/2011-03/msg00228.html (9,432 bytes)
5. Re: [Amps] Homebrew is back.. (score: 1): Author: "Diane & Edward Swynar" <deswynar@xplornet.ca>; Date: Mon, 28 Mar 2011 15:34:45 -0500; Hi Roger, Nice note--thanks! Yes, the 813 has cost advantages, alright--but you have to jump through some hoops in order to make them "play" on 15- and 10-meters efficiently, because of the high inte; /archives//html/Amps/2011-03/msg00229.html (11,742 bytes)
6. Re: [Amps] Homebrew is back.. (score: 1): Author: "Fuqua, Bill L" <wlfuqu00@uky.edu>; Date: Mon, 28 Mar 2011 15:51:01 -0400; Good 813s are often hard to find on the market since most used ones have been abused. Other possibilities are 4 parallel 4CX250Bs with 50 ohm load resistor on the untuned input or a 200 ohm with a 1:; /archives//html/Amps/2011-03/msg00230.html (12,964 bytes)
7. Re: [Amps] Homebrew is back.. (score: 1): Author: "David Jordan" <Wa3gin@comcast.net>; Date: Mon, 28 Mar 2011 16:02:50 -0400; Use Google.. you'll find all the 813s you want... I just did and found a bunch with prices that vary from $25 to $455.... Wa3gin Good 813s are often hard to find on the market since most used ones ha; /archives//html/Amps/2011-03/msg00231.html (14,313 bytes)
8. Re: [Amps] Homebrew is back.. (score: 1): Author: Jim Barber <audioguy@q.com>; Date: Mon, 28 Mar 2011 13:11:38 -0700; RF Parts shows Taylor (foreign, I assume Chinese) 813's for 49.95 USD apiece. $100 sounds like a cheap kilowatt to me. 73, Jim N7CXI _______________________________________________ Amps mailing list; /archives//html/Amps/2011-03/msg00232.html (15,438 bytes)
9. Re: [Amps] Homebrew is back.. (score: 1): Author: TexasRF@aol.com; Date: Mon, 28 Mar 2011 18:01:19 EDT; Eddy and all, here are some old and well known facts and thoughts on too much output C. Eddy already suggested the biggest help; a series L between the plate and tune C. In addition, the tube does no; /archives//html/Amps/2011-03/msg00233.html (13,463 bytes)
10. Re: [Amps] Homebrew is back.. (score: 1): Author: "Hsu" <hsu4qro@gmail.com>; Date: Tue, 29 Mar 2011 05:58:21 +0800; There are so many 813 resource in China ( NOS and factory new ) that I'm designing 2x813 GG amplifier 73!Hsu. -- Original Message -- From: "Fuqua, Bill L" <wlfuqu00@uky.edu> To: "Diane & Edward Swyna; /archives//html/Amps/2011-03/msg00234.html (15,477 bytes)
11. Re: [Amps] Homebrew is back.. (score: 1): Author: "Roger (sub1)" <sub1@rogerhalstead.com>; Date: Mon, 28 Mar 2011 20:23:12 -0400; Yah, but you can beat the sh..er...snot out of them and they keep on ticking. I ran well over 1200 PEP out of a pair in GG (B&W 850A Pi-net) and they were as good when I moved on as they were when I; /archives//html/Amps/2011-03/msg00237.html (10,712 bytes)
12. Re: [Amps] Homebrew is back.. (score: 1): Author: "Carl" <km1h@jeremy.mv.com>; Date: Mon, 28 Mar 2011 20:54:03 -0400; Thats rather normal for INPUT power. At 3KV and 200ma each it is very attainable and reliable with a bit of air as the 125W PD is ultra conservative. Carl KM1H _______________________________________; /archives//html/Amps/2011-03/msg00238.html (9,307 bytes)
13. [Amps] Homebrew is back.. (score: 1): Author: "Jim Thomson" <jim.thom@telus.net>; Date: Tue, 29 Mar 2011 04:17:44 -0700; Hi Roger et al, I use a pair of 813s in parallel grounded-grid service here in my homebrewed KW amplifier, and--I'm blushing as I type this!--but I have NEVER EVER purchased any of the jugs that are; /archives//html/Amps/2011-03/msg00240.html (11,782 bytes)
14. Re: [Amps] Homebrew is back.. (score: 1): Author: "WA3GIN" <wa3gin@comcast.net>; Date: Tue, 29 Mar 2011 08:35:51 -0400; _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps; /archives//html/Amps/2011-03/msg00241.html (8,404 bytes)
15. Re: [Amps] Homebrew is back.. (score: 1): Author: "k7fm" <k7fm@teleport.com>; Date: Tue, 29 Mar 2011 06:03:11 -0700; "What a biased bunch... no one mentioned the 304TL's ;-)" The 304TL was not mentioned because it needs a lot of bias - and we are mostly unbiased hams. 73, Colin K7FM ________________________________; /archives//html/Amps/2011-03/msg00242.html (8,716 bytes)
16. Re: [Amps] Homebrew is back.. (score: 1): Author: "Carl" <km1h@jeremy.mv.com>; Date: Tue, 29 Mar 2011 09:19:24 -0400; The 813 is in the mid -30's in GG, which is better than many xcvrs and certainly acceptable. Same with a 4X1 if run sanely. The 813 is still a hamfest $5-10 out of the carton. Just pass on ones with; /archives//html/Amps/2011-03/msg00243.html (14,148 bytes)
17. Re: [Amps] Homebrew is back.. (score: 1): Author: "Carl" <km1h@jeremy.mv.com>; Date: Tue, 29 Mar 2011 09:22:43 -0400; Im building up my second modulator with a pair, just picked up BC-1k mod iron and reactor. The RF side will be 6C21's. I dont care for 833A's which were what Gates used for both. Carl KM1H __________; /archives//html/Amps/2011-03/msg00244.html (9,011 bytes)
18. Re: [Amps] Homebrew is back.. (score: 1): Author: "WA3GIN" <wa3gin@comcast.net>; Date: Tue, 29 Mar 2011 09:48:49 -0400; Yeah, I've got a one owner Gates 1Kw AM xmitter which I have to tune up for 160m It is full of 833s. But I got a free pair of spares so I'll live with them ;-) wa3gin ________________________________; /archives//html/Amps/2011-03/msg00245.html (9,472 bytes)
19. Re: [Amps] Homebrew is back.. (score: 1): Author: "Sam Carpenter" <sam@owenscommunication.com>; Date: Tue, 29 Mar 2011 10:50:40 -0400; Dang-it guys. Just when I was starting to be satisfied with SSB you had to go and make me think about nice, big, plate modulated AM audio again. That is going to cost me. It takes me back to many win; /archives//html/Amps/2011-03/msg00246.html (10,824 bytes)
20. Re: [Amps] Homebrew is back.. (score: 1): Author: "Jim Thomson" <jim.thom@telus.net>; Date: Tue, 29 Mar 2011 07:51:44 -0700; &&&& And you can easily get nice sounding audio with 4-6 khz wide ESSB....and still only use one half the BW of an AM signal. later... Jim VE7RF _______________________________________________ Amps m; /archives//html/Amps/2011-03/msg00247.html (9,945 bytes)

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