Evan. What voltages would I expect to see at Q70? Will report back.
73, Richard AG5M
On Monday, February 24, 2025 at 03:15:48 PM PST, Evan Hand via groups.io <elhandjr@...> wrote:
Hi Richard,
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Based on this new information, I would verify the Q70 DC operating point:
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According to Raj's (VU2ZAP) sheet, the base should be 0.6 to 0.7 volts, and the collector should be 1.6 to 1.7 when receiving.
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If Q70 is correctly biased, verify that C50 and C51 are not opened.? I do this test with a metal tweezers touching both sides of the cap with the radio on.? You should hear an AC hum.
Evan
AC9TU
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Richard AG5M