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73 Magazine (December 1969)

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Book Id: WPLBN0003304702
Format Type: PDF eBook :
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Reproduction Date: 2011

Title: 73 Magazine (December 1969)  
Language: English
Collections: Periodicals: Journal and Magazine Collection, 73 Magazine
Publication Date:


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73 Magazine (December 1969). (1969). 73 Magazine (December 1969). Retrieved from

Description: 73 Magazine December 1969 (#111) Quick, Easy, Dependable Transistor Diode Checker - For those who like checkered diodes ...... W6ICC 6 Did Samuel Morse Really Invent the Telegraph? - Telegraph? What's that? ...... W2FEZ 10 Combination Dummy Load/Attenuator Network - Also doubles as a hot plate for your coffee warming ...... W2EEY 14 Tuned Filter Chokes - The Easy Way - Can your filter chokes carry a tune? ...... W2OLU 18 Hey OM - You've Got Carrier There - "Drop dead, you knit-picker." ...... W4NVK 22 Bandswitching the Swan-250 and TV-2 - For both six and two meter operation lickety-split ...... K3LNZ 26 Cheap and Easy Selectivity - A CW audio filter for under $10. Cheap enough ...... W5INU 28 VHF-FM - Part III : Hand Held Portables - Part 3 in our effort to brainwash you in to trying FM ...... WB2AEB 30 Sunspots and the Ham - If you can't beat 'em, join 'em ...... WB2VFX 32 SSTV - Lecture at the International Congress of Amateur Television ...... SM0BUO 34 Amateur Radio in the Classroom - Drives the kids right out of their everlasting minds ...... K0HUD 40 The Galaxy RV-550 Remote VFO - Test Report from an excited and happy user ...... W6AJZ 48 Calculation Made a Little Easier - Stuff our dumb high schools should have taught ...... W1EZT 50 Universal Dual-Frequency Crystal Calibrator - Using those new IC circuits ...... W2EEY 58 Versatilize Your Transceiver - Adding incremental tuning, a blessing in no disguise ...... VE3ECU/W0 62 Transistor Class B and C Power Amplifier Design - Slide rule lovers, arise and rejoice... an article for you! ...... VK3ZRY 64 Two for Mobile - Power supplies, not a love story ...... K6ZFV 70 Amateur Microwave Frequency Meter - 1 to 10 ghz. Simple, but necessary test equipment for ghz tinkerers ...... K1CLL 72 Audio Organizer - Nice companion unit for the station transceiver ...... WB2WYO 77 Converting a CB Transceiver to Six Meters - What else can you do with them? ...... WB6BIH 78 Extra Class License Course, Part XI - Oscillators ...... Staff 82 Topographical Maps for the Radio Amateur - For transmitter hunts, and other hammy applications ...... W9VZR 102 Fascinating Fundamentals III : Magnetism - An irrelevant dip into history ...... W2FEZ 10 Index courtesy of

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