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prm80_wide_nar_dev_mod [2018/09/14 23:16] vk3smb created |
prm80_wide_nar_dev_mod [2018/09/14 23:17] (current) vk3smb |
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The parts required are | The parts required are | ||
- | - 1Meg ohm resistor | + | * 1Meg ohm resistor |
- | - 38k ohm resistor | + | * 38k ohm resistor |
- | - BC558 Transistor. | + | * BC558 Transistor. |
I have mounted the components on the circuit board with hot glue and connected them "ugly" style. I found with a correct narrow deviation adjustment adding a 38k resistor gave me a wide band setting. you can replace this with a 50k pot if you require. | I have mounted the components on the circuit board with hot glue and connected them "ugly" style. I found with a correct narrow deviation adjustment adding a 38k resistor gave me a wide band setting. you can replace this with a 50k pot if you require. |