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I just measured one, and it has very low ohms (0.3 ohms according to my DMM). That was 49Mhz coil, I think the 27Mhz (with more wire on it) would be almost 1 ohm, still not much resistance though. I have rewound coils for different frequencies, and found that the lower the freq. of the coil, means more turns of wire. (did this on Canned Heats/ Auldey).
You could wind up a coil with lots of wire to make a resistor, or even use an old steering coil as a resistor, but that is still just a single fixed resistance. Maybe with a tiny switch, that either shorts across the resistor for full speed, and is left open for low speed. Something like a micro version of a MSC.
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