Motorola ts907 low hv

[Electronic M]

Originally Posted by timmy

I also may put k1 back in the one I made up since for some reason I had a much clearer picture from pin 2 v2 when the new k1 was in but then again I replaced 2 22ohm resistors in v1 and v2 so maybe it’s the resistors letting more to get by in the iF interference to get the same clear pic Before doing the resistors I don’t know yet. And besides why is agc needed anymore anyway since there’s no more over the air broadcasting for the agc to amplify.

You could manually bias the IF...Some cheaper portables and consoles like the Philco predicta didn't have AGC and simply had a local distant switch for bias control and expected the user to adjust contrast to compensate for signal strength....There may not be sufficient contrast range on your set to give it permanent fixed bias.
Modern RF modulators vary in strength so without AGC one unit might be too weak or too strong.