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wrote in message oups.com... According to Kiwa's website, their shortwave preamp will make your receiver quieter. They claim that when you turn off your receiver's internal preamp and instead rely upon the Kiwa preamp, you will have fewer noisy circuits operating inside the receiver. I find myself unmoved by this claim, since it would apply to *any* external preamp--and most external preamps will do nothing to improve S/N ratio, at least in my (limited) experience. Of course, the Kiwa preamp also has a BCB rejection filter. I *do* see how this could improve S/N ratio, but I'd like to hear some first hand reports. If you've used Kiwa's preamp, can you comment on whether it resulted in a significantly improved signal to noise ratio? Thanks in advance, Steve Why would a preamp not help s/n ratio? If it amplifies the signal along with antenna noise, then there is less amplification to be done by the radio itself and the stage noise in the radio will be reduced. It should improve S/N ratio. B |