K6VHF Amateur Radio World - This is my most recent program and it's Bias Tee calculator which helps to calculate the values for a typical bias tee circuit (capacitance C and inductance
AN-2061: Wideband Bias Tee Design Using 0402 SMD Components | Analog Devices
Microwaves101 | Lumped Element Bias Tee
Bias Tees - everything RF
PTT Switched 144MHz Bias Tee | George Smart – M1GEO