"Li'l 7" AM Transmitter - Videokarma.org TV - Video - Vintage Television & Radio Forums

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"Li'l 7" AM Transmitter

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#16

08-21-2011, 05:13 PM

old_coot88 old_coot88 is offline

VideoKarma Member

Join Date: Sep 2009

Posts: 2,653

You want to double-check that C5 connects from pin 4 (control grid) to the jct. with C6 (which also connects to lug# 4 of the coil and pin 3 of the tube.

C5 provides the feedback to sustain oscillation so it has to be in place. Also double check that the 47K resistor R1 goes from pin 4 to ground.

Maybe post the schematic of the most recent iteration when you get it done.

Last edited by old_coot88; 08-21-2011 at 07:30 PM.

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