voltage reference

Balun 1:1 - 1:1 Ruthroff voltage balun using a T200-2 Toroid core

Balun 4:1 - 4:1 Ruthroff voltage balun design using a T200-2 Toroid core

Listen to National Hurricane Center Skywarn Nets - Live audio of the National Hurricane Center’s Skywarn Nets. This live feed covers several different states, and locations throughout the US including: TX, LA, MS, AL, FL, GA, SC, NC, VA, MD, DE, PA, NJ, NY, CT, RI, MA, VT, and ME

Illinois - Chicago Police - Illinois Cook County, police scanner includes Chicago Fire Dispatch channels (North, South, and HazMat)

Detroit Fire Department Scanner feed - Detroit Fire Department Radio Feed

Memphis Police Radio - Memphis Police and Shelby County Sheriff dispatch

Denver Police Radio - Live audio feed from Denver Colorado Police

Ingham County Public Safety - Listen to Ingham County Michigan Public Safety, County Sheriff, Police and Fire

Las Vegas Rural Nevada Highway Patrol - Live feed for NHP rural areas of Moapa Laughlin Primm Alamo Indian Springs

SB-220 Repairs and Modifications - Heathkit SB 220 mods, replacing the Zener ZD1, replacing the plate-voltage voltage divider, adding a keying circuit for solid state transceivers

Heathkit SB-220 Meter Repair - Repairt a Heathkit SB-220 Linear Amplifier with a bad Plate Voltage meter

Changing Filament to Kenwood TL-922 - Mod to reduce filament voltage by using thinner and longer wires from filament transformer

Radio Shack PRO-95 details - The Pro 95 is a dual trunking handheld scanner designed by GRE and sold by Radio Shack

Radio Shack Pro-97 Specifications - RadioReference page on Radio Shack Pro-97

A NiCAD Battery Charger - A NiCAD Battery Charger with Current and Voltage Limiting

dbm Calculator - The dbm online calculator and reference table for 50 Ohm

High voltage power supply - An High voltage power supply design by F1FRV

40 CW QRP Transmitter  ^new - Here is a easy to build and cheap CW transmitter using 40 m cristals. Power output is approximately 6 Watts for a supply voltage of 13.8 VDC

SWR calculator - Online VSWR Voltage Standing Wave Ratio Calculator

RF Probe Project - If you needed the ability to quickly measure RF voltage for tuning filters and cavities this RF Probe probe is for you