- 1. [Amps] SB-230 Power Question (score: 1)
- Author: K4MT <k4mt@yahoo.com>
- Date: Tue, 19 Mar 2013 00:55:42 -0700 (PDT)
- I recently acquired a SB-230 thinking the tube was probably bad with an idea of doing a GI7B project. To my surprise the amp puts out 650 watts plus on my peak reading wattmeter on SSB 80/40 Meters w
- /archives//html/Amps/2013-03/msg00251.html (7,273 bytes)
- 2. [Amps] SB_230 Power Question (score: 1)
- Author: K4MT <k4mt@yahoo.com>
- Date: Tue, 19 Mar 2013 01:06:23 -0700 (PDT)
- I have checked the input SWR and rig foldback is not the cause. I am getting low SWR on all bands and the input circuit measures 100 Ohms as it should. _______________________________________________
- /archives//html/Amps/2013-03/msg00252.html (6,523 bytes)
- 3. [Amps] SB-230 Grid Ring (score: 1)
- Author: K4MT <k4mt@yahoo.com>
- Date: Fri, 22 Mar 2013 10:21:57 -0700 (PDT)
- I am still refurbishing my SB-230 and I have noticed the grid ring on the tube looks badly tarnished. I have checked it with an ohm meter and I see a low resistant connection but that tells me nothin
- /archives//html/Amps/2013-03/msg00287.html (8,039 bytes)
- 4. [Amps] 8650AS Grounded Grid (score: 1)
- Author: K4MT <k4mt@yahoo.com>
- Date: Mon, 25 Mar 2013 00:03:18 -0700 (PDT)
- I know some tetrodes have been successfully run in cathode fed grounded grid configuration. Is the 8560AS one that will run grounded grid without going through the trouble of creating screen supply?
- /archives//html/Amps/2013-03/msg00326.html (6,698 bytes)
- 5. [Amps] SB-230 drive VS power output (score: 1)
- Author: K4MT <k4mt@yahoo.com>
- Date: Tue, 26 Mar 2013 08:55:40 -0700 (PDT)
- I have been fighting with my SB-230. Initially I was getting 500 watts CW key down with about 85 watts drive and over 600 on my peak reading meter on SSB. I slowly lost gain and finally I was only a
- /archives//html/Amps/2013-03/msg00336.html (7,046 bytes)
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