- 1. [Amps] SB-220 Drive Levels (score: 1)
- Author: Jeff Carter <amps@hidden-valley.com>
- Date: Thu, 22 Jan 2009 17:49:59 -0500
- Can anyone tell me how much drive the SB-220 needs to make 1.5KW? I've seen several references that 100W isn't enough drive for this amp. How much would it take? Jeff/KD4RBG _________________________
- /archives//html/Amps/2009-01/msg00246.html (6,508 bytes)
- 2. Re: [Amps] SB-220 Drive Levels (score: 1)
- Author: "Tim Duffy K3LR" <k3lr@k3lr.com>
- Date: Thu, 22 Jan 2009 17:11:30 -0600
- Hi Jeff: The SB-220 was never designed to generate 1.5 KW output. Running 1.5 KW with the SB-220 will surely shorten the life of several components! The SB-220 was designed to run 1 KW INPUT on CW an
- /archives//html/Amps/2009-01/msg00247.html (8,394 bytes)
- 3. Re: [Amps] SB-220 Drive Levels (score: 1)
- Author: "Steve Katz" <stevek@jmr.com>
- Date: Thu, 22 Jan 2009 15:15:56 -0800
- I think the answer would be about 150W, plus a spare transformer, bigger fan, bigger filter caps... Not a good idea. Never designed for 1500W PEP output. WB2WIK/6 Can anyone tell me how much drive th
- /archives//html/Amps/2009-01/msg00248.html (7,817 bytes)
- 4. Re: [Amps] SB-220 Drive Levels (score: 1)
- Author: Robert Morris <robrk@nidhog.net>
- Date: Thu, 22 Jan 2009 18:24:03 -0500
- The SB220 was never designed to "make" 1500 watts. It was designed for 1000 watts INPUT (plate volts x plate current). At 60% efficiency, look for 600 out. Just because it has 3-500's, the tank coil
- /archives//html/Amps/2009-01/msg00249.html (8,138 bytes)
- 5. Re: [Amps] SB-220 Drive Levels (score: 1)
- Author: Glen Zook <gzook@yahoo.com>
- Date: Thu, 22 Jan 2009 15:35:51 -0800 (PST)
- You are thinking of the SB-200 and not the SB-220. The SB-200 (pair of 572B tubes) was rated at 1200 watts PEP input and they generally get about 600 to 650 watts output. The SB-220 (pair of 3-500Z t
- /archives//html/Amps/2009-01/msg00250.html (8,389 bytes)
- 6. Re: [Amps] SB-220 Drive Levels (score: 1)
- Author: Robert Morris <robrk@nidhog.net>
- Date: Thu, 22 Jan 2009 19:01:41 -0500
- No I'm not thinking of the SB200. I was trying to answer the original question. When incomplete questions are asked, we fill in with assumptions. The question was getting 1500 watts out of an SB220.
- /archives//html/Amps/2009-01/msg00252.html (9,264 bytes)
- 7. Re: [Amps] SB-220 Drive Levels (score: 1)
- Author: "Carl" <km1h@jeremy.mv.com>
- Date: Thu, 22 Jan 2009 19:13:19 -0500
- 100W for ~1200W, the PS wont handle any more. Carl KM1H _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
- /archives//html/Amps/2009-01/msg00253.html (8,327 bytes)
- 8. Re: [Amps] SB-220 Drive Levels (score: 1)
- Author: "Bert Almemo" <balmemo@sympatico.ca>
- Date: Thu, 22 Jan 2009 19:44:58 -0500
- Hi Jeff, The manual reads as follows: Driving power 100W Max power input SSB 2000W continous voice CW 1000W max keydown 10 mins RTTY 1000W 50% duty 73 Bert, VE3OBU --Original Message-- From: amps-bou
- /archives//html/Amps/2009-01/msg00254.html (8,511 bytes)
- 9. Re: [Amps] SB-220 Drive Levels (score: 1)
- Author: Bob Alexander <realex@flash.net>
- Date: Thu, 22 Jan 2009 19:28:44 -0600
- 1200 Watts out is about the max an SB220 will do. One should remember the amp was built at a time when 1000 W DC input was the legal limit and all instructions in the manual reflect this limit. On 20
- /archives//html/Amps/2009-01/msg00256.html (8,254 bytes)
- 10. Re: [Amps] SB-220 Drive Levels (score: 1)
- Author: "Carl" <km1h@jeremy.mv.com>
- Date: Thu, 22 Jan 2009 22:11:41 -0500
- The SB-220 has been run by many at 1200W out on CW in the SSB position since the first one was shipped. That holds true with most other 2000W PEP Input amps. Carl KM1H _______________________________
- /archives//html/Amps/2009-01/msg00261.html (10,543 bytes)
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