I had the exact same question when I bought the 250 Hz filter for my Corsair.
As Clark WA3JPG said, "Put it in either way". It works fine, and is not
In a message dated 19-Aug-99 05:50:28 Central Daylight Time,
> Hi Gang,
> Just got a Inrad filter (400hz)for my omni c. My question is, is the
> filter polarized? is there a positive/negative?? Does it just drop in?
> Is there anything to tune? or adjust?
> And wile im at it, If i want to run QRP, can i just turn down the alc
> set pot on the lo level driver board. would this reduce the drive to the
> 73, mitch ww4ml
> lost in the eithers again..
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