Understanding, Maintaining & Re-Tuning Antenna Duplexers By William F. Lieske, Sr., Founder, EMR Corporation Download PDF Forward A technical bulletin on this subject was prepared in 1990. Since then, antenna duplexers have continued to increase in...
Methods of Tuning Cavity Resonators According to Application By William F. Lieske, Sr. Founder, EMR Corporation Download PDF Forward Cavity resonators have been used in land mobile, radio broadcast and related applications for more than seventy...
Understanding Hybrid-Filter Transmitter Combiners By: William F. Lieske, Sr.Founder, EMR Corporation Download PDF Introduction More than forty years ago devices known as hybrid couplers were used to couple signal paths to a common source or load....
Understanding Ferrite-Filter Transmitter Combiners By: William F. Lieske, Sr., Founder, EMR Corporation Download PDF Forward EMR Corporation has been designing and manufacturing transmitter combiner equipment since our inception in 1980. The...
Understanding Receiver Multicoupler and R.F. Preselectors By: William F. Lieske, Sr.Founder, EMR Corporation Download PDF General The EMR corporation series of receiver multicouplers include a basic chassis on which a high performance, low noise...
The Care & Feeding of the R.F. Isolator By William F. Lieske, Sr. Founder, EMR Corporation Download PDF Introduction Over the years or more the number of receivers and transmitters at established wireless system repeater sites has increased...
The Fifty Ohm Enigma or, “Have you got a match?” By: William F. Lieske, Sr. – Founder, EMR Corporation Download PDF What This Write-up Is About: Those involved with radio frequency systems and the management of transmission and reception of various electronics...
