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eHam Forums => Amplifiers => Topic started by: KW4CQ on July 05, 2019, 07:20:18 AM



Title: ALS-606 & Power Supply just too much fan noise
Post by: KW4CQ on July 05, 2019, 07:20:18 AM
Don’t know if I have a bad fan in either unit but the constant high pitched drone of the fan(s) is way too much on SSB.  Repositioning equipment or mic doesn’t help.  Anyone got a similar problem?
Bob


Title: RE: ALS-606 & Power Supply just too much fan noise
Post by: AC2RY on July 05, 2019, 01:35:38 PM
Don’t know if I have a bad fan in either unit but the constant high pitched drone of the fan(s) is way too much on SSB.  Repositioning equipment or mic doesn’t help.  Anyone got a similar problem?
Bob

From my experience - use of headset with integrated microphone is the only sure way to operate voice modes without noise getting into the transmission. Heil, Bose and others make nice headsets to use with radio. The best headsets are those designed for aviation use. They are least sensitive to outside noise, but not cheap.




Title: RE: ALS-606 & Power Supply just too much fan noise
Post by: K6AER on July 05, 2019, 02:36:03 PM
Turn down your mic gain and close talk the microphone. About 1 inch distance.