To: | Will Matney <craxd1@ezwv.com> |
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Subject: | Re: [Amps] Parasitic Oscillation |
From: | R.Measures <r@somis.org> |
Date: | Wed, 3 Nov 2004 21:23:15 -0800 |
List-post: | <mailto:amps@contesting.com> |
On Nov 3, 2004, at 5:40 PM, Will Matney wrote: Hal, Will -- I did no a suppressors experiment with my SB-220 on 40m. The amplifier was not stable. - In my experiences, "not enough time" usually has nothing to do with the availability thereof.. By testing with them installed, only shows that one amp was working correctly with its parasitic suppressors in circuit! Plus, not every SB-220 is the same, The major difference in SB-220s is the particular tubes that happen to be plugged in. not every wire the same length or in the same place. Really, all commercial amps aren't either. Plus those tubes in that amp didn't look no where new to me so the gain may have been lower than fresh tubes However, this is not always the case. The hottest, squirreliest pair of 3-500Zs I ever tested had a couple of hundred hours on them. ...Richard L. Measures, AG6K, 805.386.3734. www.somis.org _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps |
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