neazoi
Advanced Member level 6
Hi, in a trio 9r-59d I experience a weird problem. On band B (1.6-4.8MHz) when I tune the dial below 2.5MHz or so, the receiver stops receiving anything, even noise. It seems to me that the local oscillator stops working at all below 2.5MHz on this band, cause even noise disappears.
It seems to me that when I set the band spread or main tuning capacitors to large values, oscillation ceases. In the schematic, this could be true, because these capacitors are connected in shunt to the feedback LC so they also "remove" signal from the feedback loop, apart from tuning.
What to check and how to fix the problem?
Manual and schematic here:http://www.iw2nmx.it/Kenwood - Trio.../9R-59DS Instruction Manual and Schematic.pdf
It seems to me that when I set the band spread or main tuning capacitors to large values, oscillation ceases. In the schematic, this could be true, because these capacitors are connected in shunt to the feedback LC so they also "remove" signal from the feedback loop, apart from tuning.
What to check and how to fix the problem?
Manual and schematic here:http://www.iw2nmx.it/Kenwood - Trio.../9R-59DS Instruction Manual and Schematic.pdf