[Amps] Harris RF-110A Blower Noise Silencer

[Dave Robinson]

I have created a functional equivalent of the Harris RF-125 Blower noise silencer.  It is a metal utility box that fits over the blower inlet port.  The box is  9" x 5" x 6", comes gray painted, and you can buy it from Digi-key.   If you line it with sound absorption foam (NRF =.7), it completely eliminates the high frequency whine from the blower.   The RF-110A sits two feet away from the operating position now.  If anyone is interested, I have a 1.56mb zip file that contains a description, an actual scale template, and two photos showing installation that I can send you.  73,
Dave AG8B