Ham Radio For Dummies
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Until you become accustomed to using repeaters on all the different ham radio bands, this chart can help you remember the right offsets and channel spacings to use. Many radios have the standard options preprogrammed, but you need to be aware of what they should be.
Band Output Frequencies of Each Group (In MHz) Offset from Output to Input Frequency
6 meters 51.62 – 51.98

52.5 – 52.98

53.5 – 53.98

 – 500 kHz
2 meters (a mix of 20 kHz and 15 kHz channel spacing) 145.2 – 145.5

146.61 – 146.97

147.00 – 147.39

 – 600 kHz

– 600 kHz

+ 600 kHz
222 MHz or 1-1/4 meters 223.85 – 224.98 – 1.6 MHz
440 MHz or 70 cm (local options determine whether inputs are above or below outputs) 442 – 445 (California repeaters start at 440 MHz)

447 – 450

 + 5 MHz

– 5 MHz
1296 MHz or 23 cm 1282 – 1288

1290 – 1294

 – 12 MHz

About This Article

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About the book author:

H. Ward Silver has experienced a 20-year career as an electrical engineer developing instrumentation and medical electronics. He also spent 8 years in broadcasting, both programming and engineering. In 2000, he turned to teaching and writing as a second career, producing Ham Radios For Dummies in 2004. He supports Seattle University’s Electrical and Computer Engineering Department in laboratory instruction. He is an avid Amateur Radio operator, Extra Class, first licensed in 1972. Each month, his columns and articles can be found in the national ham radio magazine, QST, published by the American Radio Relay League (ARRL). He is the author of the ARRL’s online courses in Antenna Design and Construction, Analog Electronics, and Digital Electronics. When not in front of a computer screen, you will find him working on his mandolin technique and compositions.

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