I have used the RPA-1 and various Clifton Laboratories units (although not specifically the Z10043). Both are excellent. I have not tried a KD9SV preamp.
I particularly like the Clifton Laboratories products (http://cliftonlaboratories.com/). Although they are not as well known as the others, their products are excellent and have outstanding performance specs. There is extensive documentation online for everything they make--schematics, measurement data, etc. Also the support from Jack (K8ZOA), who runs the company, is outstanding. He is very good at answering questions and he has even customized some of his products for my applications. 73, John W1FV -----Original Message----- From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Andy YO3JR Sent: Monday, February 02, 2015 4:09 PM To: topband@contesting.com Subject: Topband: Preamplifiers Hi, Can someone recommend me a good preamplifier for the beverage antennas on 80/160m? I found on the market a few like Z10043 Norton Amplifier, KD9SV dual band preamp, RPA-1 from DX Engineering. Anyone familiar with this preamps? Looking forward for replies. Thanks in advance! Best regards, Andy YO3JR _________________ Topband Reflector Archives - http://www.contesting.com/_topband _________________ Topband Reflector Archives - http://www.contesting.com/_topband