Saturday, November 9, 2013


This is the ckt for the premixed oscillator which i used for the xtal controll for VWN CW transmitter. I just wanted to test that a stable mixer can be realized with TA7358ap or not. Fortunately it gives very good result. Filter is one stage tuned amp and another tank.

Osc ckts are similar except the crystal and its tuning pf. Adjust preset for best mixing quality. Signal should be clean.

BPF tanks were pre-tuned in the osc , freq meter stage shown in previous posts. IT was observed there was no need of retuning. but i picked it for little better signal output.