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How do you recalibrate the SWR meter in an Icom 706Mkiig radio. I changed the filter board and it seems off now.
You will need the service manual to be able to do this and you will also need to purchase a 150 ohm carbon film resistor (no wire wound resistors) to simulate a 3:1 SWR to reset the onboard auto tuner base line for SWR. I believe you may find a service manual on BAMBA's website to download for free. The auto tuner is factory set to work up to a 3:1 SWR before it gives up trying to match the antenna. So, this is a resistor you will need or make up a 150 ohm load using a combo of resistors as long as they are not wire wound types. 73, Dennis
on Apr 19, 2017
Icom ic 726
I usually replace all of my radio lamps with Ultrabright LEDs. They come in many different colours and usually fit the same mounting hole as the incandescent lamps. They will need a current limiting resistor in one of their leads, 2200 ohms to 4700 ohms at 1/4 watt works well. Leds are polarized so make sure that you get the polarity correct. Leds are also about 1/10 the cost of a similar incandescent bulb.
on Dec 09, 2016
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