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1. FW: TopBand: High input intercept devices (score: 1): Author: yo3ctk@alltrom.ro (YO3CTK); Date: Thu, 9 Apr 1998 19:00:48 +0300; I'd say that one of the best solutions is to use a good old 2N5109 in non-dissipative negative feedback circuit (patented by Norton). About 25mA of collector current yields a +30dBm input IP3 with a; /archives//html/Topband/1998-04/msg00109.html (9,621 bytes)
2. TopBand: 2N5109 preamplifier (score: 1): Author: yo3ctk@alltrom.ro (YO3CTK); Date: Fri, 10 Apr 1998 13:40:35 +0300; For those who have asked, the patent I referred to is U.S. Patent #3,891,934 dated June 24, 1975. Please go to the IBM Patent Server Home Page www.patents.ibm.com <http://www.patents.ibm.com> where y; /archives//html/Topband/1998-04/msg00124.html (6,765 bytes)
3. TopBand: Re:High input intercept devices (score: 1): Author: yo3ctk@alltrom.ro (YO3CTK); Date: Fri, 10 Apr 1998 14:08:09 +0300; Hi Tom, The figures you quote are consistent with what I have measured in my amplifiers using 2N5109. About 8dB gain and 1 to 50MHz bandwidth (with correctly designed transformer), and input VSWR les; /archives//html/Topband/1998-04/msg00128.html (8,965 bytes)
4. TopBand: Rohde&Schwarz EK070 schematics (score: 1): Author: yo3ctk@alltrom.ro (YO3CTK); Date: Wed, 29 Apr 1998 20:58:15 +0300; Hello everybody, I have just finished scanning the schematics many of you requested. Seven JPEG images, about 300k each. The quality is not all that great, but seems to suffice to convey the informat; /archives//html/Topband/1998-04/msg00260.html (7,114 bytes)

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