73 Amateur Radio Today – June 1994
Issue Contents:
MRP4 Solar Panel Control Circuit
– Build this easy charge controller for your sun-powered station! …… WB8VGE 10
Surplus Solar: Is It for You?
– An affordable alternate backup power system …… N7MGT 18
Used Batteries for Ham Stations
– Another way to save money on power systems …… N7MGT 22
All About Those Lightweight HF Ham Whips
– Easy mobile operating from 160 to 10 …… WB6NOA 28
Mobile-oN Alarm Timer
– This little circuit could save your car’s battery …… KA8PHO 32
The Morse Messenger
– A tiny inexpensive CW IDer for foxhunters balloonists and tightfisted hams …… KF7VS 46
Midland Corporation’s Models 18-300 18-325 and 18-330B Mobile Antennas
– Sturdy whips for VHF and UHF operation …… KT2B 36
The Rayovac Renewal Battery
– A ham’s dream cell …… N7MGT 40
73 Amateur Radio Today – June 1994
