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  1. M

    Super star 3900 static noise in usb only

    Hello, I have a super star 3900, which had been abandoned for years, it has a curious problem, and it is that in usb, it is not stable in frequency, I checked the quartz crystal of 14,010, I have also checked the adjustment coil of usb l21, I have immersed the mode selector in isopropyl alcohol...
  2. M

    Midland Alan 8001

    Hello, I am trying to repair an alan 8001 of the old ones, it has a problem, the modulation is very low, after changing the b754 and a473, apart from the 2sc2312, which had a leak, the device remains the same, I have observed, that with hardly any power, about 100mw if there is a good...