[ICOM] IC-746 High Indicated SWR on 6 Meters

[Ed K1EP]

I would also check a sticking or failed T/R relay in the radio.  When the radio goes in to transmit mode, do you at least hear the relay click?  Well, maybe that isn't much of test if the relay is quiet :)   Do you have this problem on other bands or just on 6M?  

At 2/5/2006 10:52 AM, Lawrence Young wrote:
>Mac and all: Once you have checked the usual suspects, (tuner, antenna etc) for problems, and found none, another possibility is  diode failure whch can cause the PA's to oscillate when on 6 meters. Pa oscillation has been known to occur on 756PRO's around 47 Mhz, yet all checks OK on a dummy load. I am not sure if 746's have been know for this failure or not, but its something to consider if no other cause can be found. Good Luck, Larry K4LXV.
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