RedCore R-4 User Manual download pdf (Page 16)

a match. So start out with all 5 switches on the top row in the out position. This will bypass those

coils, eliminating them from the circuit. Next, switch the tune/operate switch to tune. Now put the

right hand toggle in the in position. This will be minimum inductance. Put your transmitter in

tune or close the key to send a signal. You will be transmitting into a bridge, and you will not

harm your finals if you keep it short. While sending a signal, use the tuning capacitor to see if you

can get the LED to dim or go out. If you do, you have a match. If not, try switching in more

inductance remembering that the inductance increases as you go to to you left. Keep trying

adding inductance until you get a match. The LED will dim or go out when you have a good

match. Have fun and enjoy

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RedCore R-4 User Manual Page 16