| To: | Discussion of Ten-Tec Equipment <tentec@contesting.com> |
|---|---|
| Subject: | [TenTec] Hercules II Bias control transistors |
| From: | Ken Brown <ken.d.brown@hawaiiantel.net> |
| Reply-to: | ken.d.brown@hawaiiantel.net, Discussion of Ten-Tec Equipment <tentec@contesting.com> |
| Date: | Sat, 20 Jan 2007 20:38:22 -1000 |
| List-post: | <mailto:tentec@contesting.com> |
What kind of transistors are Q1, Q2, Q3 and Q4 on the main 420 Wiring
Diagram? These are used to control the bias to the four pairs of PA
transistors. They connect to connectors 23, 24, 25 & 26 on the Bias
Board schematic. They look similar to Q1, the fan driver transistor on
that board, though they must be NPN. Q1 on the bias board is PNP, a MJE370.
DE N6KB |
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