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565acom [2012/01/20 20:02] n1eu |
565acom [2012/02/14 16:07] n1eu |
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| were -3dB @ 1.1MHz. A Dunestar 400-HPF will also eliminate the problem. | were -3dB @ 1.1MHz. A Dunestar 400-HPF will also eliminate the problem. | ||
| - | Ten-Tec later switched to different PA transistors and the problem disappeared from later production Orions. | + | Ten-Tec later switched from bipolar to FET transistors in the PA driver and the problem disappeared. This change was incorporated in the Orion II and may (?) have been incorporated in the latest production (2005-2006) Orions. |
| Barry N1EU | Barry N1EU | ||
