Originally posted by stefan-s
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Turn the detector on, then set the switch to the speaker symbol. Press C and hold down. After a few seconds four LEDs in the middle with light up. Keep pressing till they go out, but still keep pressing C. Two LEDs will then light to show the channel and the bank. LEDs 1 - 10 are the channel and 11 - 14 are the banks. This gives you a choice of 40 channels, or pulse rates. Keeping C pressed, use the + and - to either increase pulse rate or reduce pulse rate. When LED 10 lights it will automatically go to the next bank, either up or down, depending whether you are pressing + or -. Try 4/13 for a start, then release C and return the detector to 'normal'. If still noisy, try another channel. Takes a bit of time to find a good one. The setting is stored when you switch off.
I have just wound a 7in coil which took 60 turns to get 1.5mH. The resistance was 2.8 ohms however, but it still worked. I put 0.5 ohms in series to bring the resistance nearer to what it should be and it still worked. This coils also worked unshielded but it is now shielded with coated silver fabric tape and works fine. It is now in a Whites 7in shell and a length of RG58AU coax and awaits potting. The 0.5 ohm resistor will go inside the Souriau connector.
Eric.
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