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Mike,
Having some form of Antenna Input Protection is a Good Idea. - - - Instead of a Single Diode: *--|--@ * = Ground -and- @ = Antenna # 1. Good - Try a two sets of Double Diodes. *--|--|--@ *--|--|--@ # 2. Better - Use a Gas Discharge Tube (GDT) for EMF shunting and a 10K Ohm Resister for Static Electricity Bleed-Off to Prevent Static Electricity Build-Up and Discharge. *----(o----@ *--\/\/\/--@ # 3. "Best" is an Improvement to #2 would be to replace the 10K Ohm Resister with a with a 10K Audio Taper Potentiometer. + One Leg/End goes to the Antenna. + The 'other' Leg/End goes to Ground. + Then the Center of the POT goes to the Radio. + The Radio's Ground is also connected to the common Ground. NOTE: The 10K POT now acts as a Bleed Resister and also an External RF signal Attenuator. *----(o----@ *--\/\/\/--@ *====^=====@ *====| *====R R = Radio iane ~ RHF .. .. = = = mike = = = wrote in message . .. Sony 7600GR portable I figured out the image problem. I think it's the voltage limiting diodes I place yesterday across my antenna input to ground. mike |
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