73 Amateur Radio Today – July 1961 Issue

73 Amateur Radio Today – July 1961 Issue

Return to 73 Amateur Radio Today Index


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

Return to 73 Amateur Radio Today Index


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