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Total 20 documents matching your query.

1. [Amps] SB-220 6M conversion (score: 1): Author: Artek Manuals <Manuals@ArtekManuals.com>; Date: Fri, 5 Jun 2020 23:10:41 -0400; I have enough HF amps here (four at last count) One of them is an ancient SB-220 , so I thought what the heck I would "hack" it and turn it into a 6M single band. I have a folder full of articles on; /archives//html/Amps/2020-06/msg00010.html (9,137 bytes)
2. Re: [Amps] SB-220 6M conversion (score: 1): Author: Jim <jimw7ry@gmail.com>; Date: Fri, 5 Jun 2020 22:22:15 -0500; Did you directly ground the grids with short wide straps? (best not to use braid). What did you change on the 10/15 meter coil to use it on 6 meters? What are you using for tune and load caps? What; /archives//html/Amps/2020-06/msg00011.html (9,628 bytes)
3. Re: [Amps] SB-220 6M conversion (score: 1): Author: Adrian <vk4tux@gmail.com>; Date: Sat, 6 Jun 2020 13:24:14 +1000; Have you seen this one Steve ? ; http://www.arrl.org/files/file/Technology/QST_Apr_2008_p38-40.pdf All done "physically" but try as I may I can not get more than about 600w out . 1) Two different ta; /archives//html/Amps/2020-06/msg00012.html (9,499 bytes)
4. Re: [Amps] SB-220 6M conversion (score: 1): Author: Jim <jimw7ry@gmail.com>; Date: Fri, 5 Jun 2020 22:30:50 -0500; Good article except for tearing out the original relay. Not necessary, unless you want to use QSK or hate the sound of loud relays (like I do). Thanks 73 Jim W7RY http://www.arrl.org/files/file/Techn; /archives//html/Amps/2020-06/msg00013.html (10,021 bytes)
5. Re: [Amps] SB-220 6M conversion (score: 1): Author: Alek Petkovic <vk6apk@bigpond.com>; Date: Sat, 6 Jun 2020 11:28:53 +0800; From what I know on the subject, stick with the flat coil. Also, there is a quite finnicky, incremental and precise tuning procedure. I remember being with a local ham friend, when we fired his conve; /archives//html/Amps/2020-06/msg00014.html (10,182 bytes)
6. Re: [Amps] SB-220 6M conversion (score: 1): Author: Artek Manuals <Manuals@ArtekManuals.com>; Date: Fri, 5 Jun 2020 23:45:42 -0400; About 65-70W to get 600W (no further increase at 80W) Dave NR1DX 73, Dick, W1KSZ I have enough HF amps here (four at last count) One of them is an ancient SB-220 , so I thought what the heck I would; /archives//html/Amps/2020-06/msg00015.html (10,301 bytes)
7. Re: [Amps] SB-220 6M conversion (score: 1): Author: Artek Manuals <Manuals@ArtekManuals.com>; Date: Fri, 5 Jun 2020 23:46:04 -0400; About 65-70W to get 600W (no further increase at 80W) Dave NR1DX 73, Dick, W1KSZ I have enough HF amps here (four at last count) One of them is an ancient SB-220 , so I thought what the heck I would; /archives//html/Amps/2020-06/msg00016.html (10,081 bytes)
8. Re: [Amps] SB-220 6M conversion (score: 1): Author: Artek Manuals <Manuals@ArtekManuals.com>; Date: Fri, 5 Jun 2020 23:46:22 -0400; Shack is dark ...will post pixs tomorrow The old "tune" cap is now the load cap The "new" tune cap measures 7-55pf and it is about 1/2 way meshed at resonance...getting a nice sharp dip in plate curr; /archives//html/Amps/2020-06/msg00017.html (11,266 bytes)
9. Re: [Amps] SB-220 6M conversion (score: 1): Author: Artek Manuals <Manuals@ArtekManuals.com>; Date: Fri, 5 Jun 2020 23:46:43 -0400; YES I have that one. Dave NR1DX http://www.arrl.org/files/file/Technology/QST_Apr_2008_p38-40.pdf All done "physically" but try as I may I can not get more than about 600w out . 1) Two different tank; /archives//html/Amps/2020-06/msg00018.html (10,033 bytes)
10. Re: [Amps] SB-220 6M conversion (score: 1): Author: Artek Manuals <Manuals@ArtekManuals.com>; Date: Fri, 5 Jun 2020 23:47:02 -0400; Agree in principle..QSK on 6M not that important Dave NR1DX Thanks 73 Jim W7RY http://www.arrl.org/files/file/Technology/QST_Apr_2008_p38-40.pdf All done "physically" but try as I may I can not get m; /archives//html/Amps/2020-06/msg00019.html (10,783 bytes)
11. Re: [Amps] SB-220 6M conversion (score: 1): Author: Roger - W7TZ <ai7rogerroger@gmail.com>; Date: Fri, 5 Jun 2020 22:28:32 -0700; My recently purchased conversion has a tuned input where the band selector was. 3kv plates, 50w input gets me ~1kw out. 73, Roger W7TZ CN83ia <http://www.avg.com/email-signature?utm_medium=email&utm_; /archives//html/Amps/2020-06/msg00020.html (12,655 bytes)
12. Re: [Amps] SB-220 6M conversion (score: 1): Author: Artek Manuals <Manuals@ArtekManuals.com>; Date: Sat, 6 Jun 2020 06:31:29 -0400; Roger 1)See Item #3 in original post !! 2) 3KV under load ??? 3) What are you using to measure power out ? 4)What did you use the to measure the plate voltage? The meter on SB220 or some other source; /archives//html/Amps/2020-06/msg00021.html (13,719 bytes)
13. Re: [Amps] SB-220 6M conversion (score: 1): Author: Steve London <n2icarrl@gmail.com>; Date: Sat, 6 Jun 2020 06:53:39 -0600; Why are you running it in the CW position, instead of the SSB position ? 600 watts out in the CW position, with the HV you are seeing, doesn't sound far off. 73, Steve, N2IC All done "physically" but; /archives//html/Amps/2020-06/msg00022.html (9,109 bytes)
14. Re: [Amps] SB-220 6M conversion (score: 1): Author: Artek Manuals <Manuals@ArtekManuals.com>; Date: Sat, 6 Jun 2020 09:28:30 -0400; Running in the CW position just to be on the safe side ( after all this amp is nearly 40 years old) Going easy on the power transformer. I can only get about 100 more watts in SSB position Dave NR1DX; /archives//html/Amps/2020-06/msg00023.html (10,337 bytes)
15. Re: [Amps] SB-220 6M conversion (score: 1): Author: "Mike Smith VE9AA" <ve9aa@nbnet.nb.ca>; Date: Sat, 6 Jun 2020 11:08:56 -0300; Dave, Lou, W1QJ, King Conversions, did my "SB-226" conversion. It's good for more than 600W out for sure ;-) Very happy with Lou and his work. I am not sure if he'd be willing to share some of his se; /archives//html/Amps/2020-06/msg00024.html (7,902 bytes)
16. Re: [Amps] SB-220 6M conversion (score: 1): Author: Artek Manuals <Manuals@ArtekManuals.com>; Date: Sat, 6 Jun 2020 12:05:01 -0400; I have access to an "SB-226" locally which I have studied it and measured the component values in detail ( nothing magical there) I dont have the same Plate tune cap (exactly) but I am very close I; /archives//html/Amps/2020-06/msg00025.html (10,665 bytes)
17. [Amps] SB-220 6M conversion (score: 1): Author: "Jim Thomson" <jim.thom@telus.net>; Date: Sat, 6 Jun 2020 09:41:23 -0700; <Running in the CW position just to be on the safe side ( after all this <amp is nearly 40 years old) Going easy on the power transformer. I can <only get about 100 more watts in SSB position <Dave <; /archives//html/Amps/2020-06/msg00026.html (9,690 bytes)
18. Re: [Amps] SB-220 6M conversion (score: 1): Author: Artek Manuals <Manuals@ArtekManuals.com>; Date: Sat, 6 Jun 2020 13:19:04 -0400; Jim et All Replies interspaced below <Running in the CW position just to be on the safe side ( after all this <amp is nearly 40 years old) Going easy on the power transformer. I can <only get about 1; /archives//html/Amps/2020-06/msg00028.html (15,105 bytes)
19. [Amps] SB-220 6M conversion (score: 1): Author: "Jim Thomson" <jim.thom@telus.net>; Date: Sat, 6 Jun 2020 10:24:03 -0700; <Running in the CW position just to be on the safe side ( after all this <amp is nearly 40 years old) Going easy on the power transformer. I can <only get about 100 more watts in SSB position <Dave <; /archives//html/Amps/2020-06/msg00029.html (8,836 bytes)
20. Re: [Amps] SB-220 6M conversion (score: 1): Author: Alek Petkovic <vk6apk@bigpond.com>; Date: Sun, 7 Jun 2020 08:27:26 +0800; Yes. Lou has put a great amount of time and effort into perfecting the art. Because of this, his conversions have no peer. 73, Alek, VK6APK Lou, W1QJ, King Conversions, did my "SB-226" conversion. It; /archives//html/Amps/2020-06/msg00031.html (9,588 bytes)

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