Hi folks - Regarding my 1.8 filter that does not work, I tried Ron's test, below, with the PBT at 4 o'clock and found no difference. Then I opened the rig and pulled the filter out of the slot while
Tim.... If you have, say, a 500Hz 6.3MHz filter, temporarily put it in the 1.8kc slot and punch the 1.8kc button. If you can tell the 500Hz filter is working, you will know the filter selection circu
Tim and the list - This sounds like a simple jumper "mod" I did once to give me sweeter (wider) audio from use of the single 9 MHz IF filter. You might carefully check around the base of the filter f
Tim - Have you checked the underside of the board? Maybe there is a broken trace or bad soldered joint at the filter sockets. Had that problem in my brand new OMNI 6+. Worth taking a look see. 73 - D