526: What is a tickler?  

527: Other than when handling third-party traffic, how often must a U.S. ham send the other ham's call sign?

528: What is the 2 Meter Calling frequency for Single side band ?  

529: What two Boy Scout Merit Badges have Morse code characters on them?

530: A.R.E.S. is an acronym for:

531: A.P.R.S. is an acronym for:

532: What government department oversees amateur licensing in Canada?  

533: An Official Observer (OO) can only send advisory notices that indicate a problem with the signal or the operator's on-air procedures.

534: The prefix VYO identifies:

535: The prefix VY2 identifies:

536: The wavelength for a frequency of 25 MHz is:  

537: A resistor with the color code of "brown-black-red" has a value of:

538: The most common material used as a resistor is:  

539: Which of the following is not a digital transmission code?      

540: The "Q" signal which signifies "who is calling me" is:  

541: A Hawaiian (KH6) ham confirming a QSO with another Hawaiian (KH6) ham will not count towards working "North America" for the WAC (Worked All Continents) award.

542: Minnesota borders which Canadian prefixes?

543: On what date was the FCC codeless Technician class license instituted?

544: How many ITU regions are there?

545: All vertical antennas must be "end-fed."

546: Which of the following United States is in WAZ zone 31?  

547: Which of the following states can apply towards WAS and zone 4 of WAZ?

548: CQ magazine's WAZ (Worked All Zones) includes which entity in zone 40?  

549: A QSL from anywhere in Quebec prefix VE2 may be used as "zone 2" for the WAZ (Worked All Zones) award.

550: The speed of light as well as radio waves in a vacuum is equal to _____?