I have a Shure PSM 900 and for some reason I suffer from extreme dropouts. I have checked everything I could, batteries, limit switch settings (tried all of them), adjustments on the receiver/bodypack. ...
This system operates in the 600 MHz band. Things to consider: Never use rechargeable batteries in things designed for alkaline. Transmitter should be within 100 feet for reliable link. Interference from other sources will OVERIDE the low power signals for this unit. Such sources can for instance be the fourth harmonic of polce and taxicab radios... fifth harmonic of aircraft radios... other RF sources including computers. All of these devices are SECONDARY users that MUST tolerate interference from licensed primary users of the band. The devices are FM radio links and with FM a transmitter anywhere near the same frequency will "CAPTURE" the discriminator of the unit and you MAY not even hear the audio of the interfering transmitter/source because it may use a different modulation means, if it is even modulated. Just changing to a different channel is NOT likely to fix the problem long term either. Shure makes high quality devices and I doubt the device is defective... only interfered with or being used at too long a range. Use an unused wire in the snake if you use one to get the transmitter within 20 feet of you and it might fix the problem. This unit is NOT a diversity device as in ear monitors are really not diversity (with two antennas and receivers) like ones used to send the other direction often are.
Apr 30, 2011 |
Shure PSM 900 Bodypack Receiver