Though my K3 is still in utero and I have no personal experence with the fan noise on it yet, I might suggest getting some foam baffling like you see on some speaker grills and mount that behind the radio and if possible, angle the batting to deflect the fans sound waves above or below, so they do not reflect directly back to the radio and as well, back to you.
If you direct the sound lower you might have a bit of this baffling taped to the back of the desk and that will break up the resonance which will only serve to amplify the sound. An ideal material would be the irregular shaped sound proofing AKA acoustic tile as the material tends to not reflect sound but the irregular shapes on its surface break up resonance. Fiberglass would be great except for the obvious problem of the slivers. very wrinkled terrycloth would be better than nothing, if you can't find such batting, be creative; something you have on hand or can find easily will surely be of some help. Just use something fuzzy at the least. The closer the sound is immediately to right angles will increase the lower registers as in the reason floor mounted speakers carry more bass than ones mid level & in the open, up the wall. 73, Gary KA1J _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
