| 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 _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.com/mailman/listinfo/tentec |
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