As Rod pointed out, the vibration from the fan causing transmitted noise in his GR300 Rptr. In the Motorola GM,Radius M, and Maxtrac, series mobiles the RX and TX VCO's are very sensitive to vibration.
Other radios may be sensitive to vibration also. [EMAIL PROTECTED] wrote: > > I too had a fan noise on my GR 300 repeater. As Eric instructed, I replaced > the fan with a low EMI. Still had some but a lot less. Then I took the new low > EMI fan and removed it from the repeater cabinet and hung it from the big > cabinet, holding all the repeater items, so it still blows on the heatsink and it > is almost not heard. I had two problems, 1) to high of EMI rated fan, 2) > vibration noise. Thank you Eric L. for your help with my problem. > > Rod KC7VQR
