Reading Assignment

Read Chapter 7, Pages 7-10 to 7-16 in your text before you continue.


Wavelength_freq_formulaRemember Band (Meters) = 300 / Frequency (MHz) ie 7.5 MHz = 40 meters. If this is not familiar then review Module 2.

As a Technician Licensee you have certain frequency privileges on the following bands:

  • Band        Frequency Privileges
  • 80 Meters - 3.525 - 3.600 MHz
  • 40 Meters - 7.025 - 7.125 MHz
  • 15 Meters - 21.025 - 21.200 MHz
  • 10 Meters - 28.000 - 28.500 MHz
  • 6 Meters - 50.0 - 54.0 MHz
  • 2 Meters - 144.000 - 149 MHz
  • 1.25 Meters - 219.000 - 222.000 MHz
  • 1.25 Meters - 222.000 - 224.000 MHz
  • 70 cm - 420.000 - 450.000 MHz
  • 33 cm - 902.000 - 928 MHz
  • 23 cm - 1240.000 - 1300 MHz
  • 2300-2310 MHz 10.5-10.50 GHz 122.25-123.0 GHz
  • 2390-2450 MHz 24.0-24.25 GHZ 134.00-141.0 GHz
  • 3300-3500 MHz 47.0-27.20 GHz 241.00-250.0 GHz
  • 5650-5925 MHz 76.0-81.00 GHz All above 275 GHz


  • Emission - Description
  • CW   -          Morse code telegraphy
  • Data -          Digital Modes
  • Image -       Television & FAX
  • MCW -         Tone Modulated CW
  • Phone -       Speech or Voice
  • Pulse -        Communication using a sequence of pulses
  • RTTY -         Narrow-band Telegraphy Radio Teletype
  • SS -             Spread-Spectrum Communication
  • Test -           Transmissions containing no information.


ARRL Band Plan
Not all authorized modes are available on all authorized frequencies.

Consult the ARRL Band Plan, Table 7-2 on page 7-10, Table 7-3 on page 7-12 & Table 7-5 on page 7-13 for more information. 

The rule is to use the minimum power necessary to get the job done. Especially note the Power Limits shown on Table 7-5.

What is a band plan, beyond the privileges established by the FCC? A voluntary guideline for using different modes or activities within an amateur band


If repeaters were to operate on the same radio frequency they can interfere with each other. To minimize this issue,repeater organizations have been created.

The entities that recommend transmit/receive channels and other parameters for auxiliary and repeater stations are called frequency coordinators.

Frequency Coordinators are chosen by amateur operators in a local or regional area whose stations are eligible to be auxiliary or repeater stations. In other words the stations that need to be coordinated choose who should be their coordinator.

In the USA, coordination is optional, but Part 97 rule 205(c) prefers a coordinated repeater over an uncoordinated repeater in disputes over interference.

Coordination is overseen by the National Frequency Coordinators' Council (NFCC), a non-profit organization that certifies regional coordinators.

The repeater antenna is the most important part of any ham radio station so it should be installed as high as possible for better coverage over a wider area. This increases the repeater range but if the repeater that is using that antenna is on a transmit frequency that happens to be on or near the input frequency of another repeater, then interference may result.

So, frequency coordinators keep extensive records of repeaters, repeater input, output and control frequencies, including those not published in directories, or on the internet repeater data bases.

The Northern California Frequency Coordinator is the Northern Amateur Relay Council of California, Inc. (NARCC). The area coordinated by NARCC is bordered by: North: The California - Oregon border. East: The Nevada state line and southward along the summit of the Sierra Nevada range to Tehachapi pass. South: A line drawn from Tehachapi pass westward to the Pacific Ocean at a point between Santa Maria and San Luis Obispo near Pismo Beach. West: The Pacific Ocean.

A repeater list contains much information: Transmit & Receive frequencies, CTCSS tones, Burst tones, repeater available types, IRLP information, Echolink information, Phone patch and more. Not all computers use all services technically available. You can view a list of Northern California Coordinated Repeaters by clicking here: Northern California Co-ordinated Repeater List


Some authorized amateur frequencies are shared with other services.

Amateurs may not be the Primary Users of the frequency, rather they may be Secondary Users.

When Amateurs are secondary users they may not cause harmful interference to primary users. So, if you find yourself interfering with a primary user, stop operating or take steps to eliminate the harmful interference, like changing frequency or lowering power.


Lots of numbers and information. But what do you need to know to pass the exam? The quiz is the key to what you need to take away from this chapter. Use it as a study guide. Check out the references in your text book.

Tips on how to remember the correct answer are included.

You can take the quiz as often as you wish.

No one but you will see the quiz results.

Take Quiz 17

Recommended reading

Review the Term Glossary in Chapter 10 of your Ham Radio License Manual

Practice Exams are available at and there are links to many other test practice sites also.