Hi I'm repairing a vintage lead 100 model 2098. On the circuit board the part is labeled "CH1" is strapped to a 10ohm 5 watt resistor. The schematics ive sourced. Do not show a value or any info other than its a axial ferrite magnet choke. Its on the output trace of the board. Can anyone tell me where to get this part or even what value the choke is? Thanks!