How Far Can I Communicate?

One of the more interesting questions a new or prospective ham will have is, “how far can I communicate?”  The frustrating answer is, “it depends…” (don’t you hate hearing that?)

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There are many factors involved in the limits to distance of radio communication.  Carrier frequency is the huge one, followed by operating mode, antenna characteristics and transmit power. Time of day, solar activity and the season (spring, summer, autumn, winter) also have a big impact on range.  Natural (thunderstorms, aurora, geologic, cosmic) and man-made (crowded band, power lines, noisy electronics) interference can also limit or disrupt a radio contact.  Also factor in the use of repeaters (terrestrial and space satellites) or reflective objects (structures, moon, meteor showers), plus unusual weather conditions and you have a lot to consider.

Since many hams get started using VHF/UHF radios for local communication, let’s talk about this first.  VHF/UHF radio wave propagation is normally limited to line-of-sight, meaning the antennas at each end must have a clear path between them (no obstructions such as buildings, trees, and particularly, the earth).

3-20 miles is a realistic range for VHF/UHF hand-held radios on the ground, depending mainly on a clear path and relative height of the two parties.  Throw in a repeater with a high antenna and that range extends considerably.  Raising your own antenna up higher Continue reading

Get on the Air Now!

An outstanding resource for amateur radio operators, and new or prospective hams in particular, is a paperback book by Don Keith N4KC entitled, GET ON THE AIR…NOW!

    

There is something for everyone here: Folks who are interested in ham radio, those who just got a license, experienced hams who lose interest, and long-time hams who are looking for something to share with newbies. N4KC covers most of what current and prospective ham radio operators need to know and he does a great job of selling the hobby/interest. And no, he’s not pushing Morse code, although CW operation is one of the more interesting aspects of amateur radio.

The main emphasis of the book is encouraging licensees to actually get on the air and experience real ham radio, not to get frustrated with bad experiences and limited equipment and then give up on our hobby.  He addresses some of the common discouragements and steers us to realistic remedies.  Chapter five is a practical discussion of antennas and I particularly appreciate chapter six with Don’s concise description of what to expect on the HF bands.

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The second half of the book is a comprehensive dictionary of “ham-speak”–amateur radio terms, abbreviations and slang, useful to all hams, new and old.

About $19 with a Kindle version for $9.  Highly recommended and the first item listed on a new site page entitled Recommended Reading.