73 Amateur Radio Today – July 1961 Issue
Issue Contents:
A Tinker-toy for Two
– Two meter antennas made out of aluminum tubing and a Tinker-toy set …… K8LFI 8
Ready-made Emergency Antenna
– New improved type mobile antenna. Really works out! …… W7CSD 12
Two Meter Line Amplifier
– Nuvistor pre-amplifier -for hottening up your two meter converter …… Bullock 14
Amplitude Modulation Systems
– Review of AM systems with special reference to an oldie you’ll like …… W7CSD 18
Globular Calculations
– How to find out how far it is from anywhere to a anywhere great circle route …… K5RPB 26
An S-meter for Your Sixer
– Or your Tenner… Or your Tower. What? You don’t have one? Heath advertises …… K5VMC 28
VLF – Very Low Frequencies
– A converter for the 10-100 kHz band …… W3QA 29
Little NIC Six Meter Converter
– Quite wee transistorized converter. You’ll like. Real quick project for you …… K8NIC/5 31
Panadapting Adaptor Part 1!
– Construction and alignment details …… W6AOI 33
Plate Modulate Your DX-40
– How to hook in an external modulator or more output from the DX-40 …… K6UGT 39
Socket for the 4-1000A
– The tubes are available surplus but the sockets ouch! Here’s an answer …… W4API 41
Frequency Measurement
– Measuring frequency with simple equipment …… Henry 42
From My Side of the Counter
– Confession from the heart of Radio Row in New York City …… W2BNW 44
Transistor Biasing Simplified
– The problem… The solution …… K6EAW 45
Powerhouse Pros Part 2
– Designing a power supply instead of throwing it together …… Staff 48
Propagation Chart
– What bands when to where …… K2IGY 56
Band Edge Marker
– 3.5 MHz oscillator gives band edge marker for all ham hands …… K1NFE 58
Transformer Action Demonstrator
– Very handy for schools and theory classes ……W8KTJ 64
73 Amateur Radio Today – July 1961 Issue
