06-21-2021, 08:32 PM
Hello everyone ,
In my last post there was rejoicing that the Hudson Zenith Model 680 was now going and some speculation about the oscillator function in this set.
Revisiting the set again the next day it again refused to go.
This time I put the prod of my digital meter onto pin 2 of the 6C6 mixer to check that there was H.T. reaching the plate there, confirming that the i.f. transformer primary was still intact -no reason why it should go o.c. overnight but stranger things etc. Whereupon the set burst into life again.
Which suggests that either the capacitance of the meter lead and prod or the high resistance of the meter to earth or both "flicked " the autodyne into oscillation. Or am I barking up the wrong tree entirely?I am interested to hear from others on this topic. Cheers everyone. Oh, by the way I have had success with a Philco C 1608 too , but I shall post separately about that.
In my last post there was rejoicing that the Hudson Zenith Model 680 was now going and some speculation about the oscillator function in this set.
Revisiting the set again the next day it again refused to go.
This time I put the prod of my digital meter onto pin 2 of the 6C6 mixer to check that there was H.T. reaching the plate there, confirming that the i.f. transformer primary was still intact -no reason why it should go o.c. overnight but stranger things etc. Whereupon the set burst into life again.
Which suggests that either the capacitance of the meter lead and prod or the high resistance of the meter to earth or both "flicked " the autodyne into oscillation. Or am I barking up the wrong tree entirely?I am interested to hear from others on this topic. Cheers everyone. Oh, by the way I have had success with a Philco C 1608 too , but I shall post separately about that.
