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February 07, 2011



The 4900 is a gorgeous monster.


Don't kid yourself. The 4900 is probably a monster on AM but has been designed more for SW. If you check you ferrite in the 4900 you may find that it is on the small side. Carefully replace it with a larger (200mm) nice and straight ferrite and adjust the coil to maximum position. You may be pleasantly surprised what you find.

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