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I am hoping someone here can guide me to what the heck is wrong with
my antenna system. Here is what is going on. Frist, I know neight of trhese antennas are very good phtsically or functionally BUT they both can be tuned down to a very accepatble SWR. However, using eithe my Icom 706 G OR my old Kenwood 440 AT even with a good SWR 1.5 or better I get a terrible audio report. I have monitored the audio using the other radio and it sounds like a warble variable picth sounds as I speak. sounds like very high over driving but I have that all turned down. I have used an MFJ 949e tuner and even let the Kenwood with auto tuner tune the antenna same results .. good SWR but terrible audio. At first I assumed it was the icom 706 but the kenwood sounds exactly the same. BUT when I do tune on the Kenwood auto tuners it does seem better... at times... The radioas are between two computers and I also have a echostation interface very close with the serial cable connected to the Icom.. I have tried all combos I can thik of removing and or changing all connection scables etc.. .. do you think even though the antennas tune ok and I know they are not the best (that i could be getting some type of werid resonating? One antenna is a ground mounted vertical the other is a mulit band trapped diploes I kinds suspect both (since they are very old) have bed traps etc BUT I still go back to they seem to tune down in SWR.. help.. it is driving me nuts,, (shirt drive) thanks any and all ideas are appreciated... |