For some reason, the question pool changed the wording of some of the transmitter power questions, but none of the answers were changed.
In general, 1500 W PEP is the maximum output power an amateur may use when transmitting. 1500 watts PEP output is, therefore, a limitation on transmitter power on the 28 MHz band for a General Class control operator (G1C05), 1500 watts PEP output is a limitation on transmitter power on the 1.8 MHz band (G1C06), and 1500 watts PEP output is the maximum transmitting power an amateur station may use on the 12 meter band.(G1C02)
In addition to this absolute power limit, the rules state that amateurs should use only enough power required to carry out a specific communication. Other than the 1500 watt PEP limit, the other limitation that applies to transmitter power on every amateur band is that only the minimum power necessary to carry out the desired communications should be used.(G1C04)
On 30 meters, though, the output power limit is lower because we are secondary users of the band. 200 watts PEP output is the maximum transmitting power an amateur station may use on 10.140 MHz.(G1C01)
There are also some rules about bandwidth. For example, 2.8 kHz is the maximum bandwidth permitted by FCC rules for Amateur Radio stations when transmitting on USB frequencies in the 60 meter band.(G1C03)
Similarly, there are rules related to data rates for the digital modes. I say similarly because the higher the data rate, the more bandwidth a signal will occupy.
300 baud is the maximum symbol rate permitted for RTTY or data emission transmitted at frequencies below 28 MHz.(G1C08) 300 baud is also the maximum symbol rate permitted for RTTY or data emission transmission on the 20 meter band.(G1C07)
On 10 meters and above, there is more spectrum available, so higher data rates are allowed. 1200 baud is the maximum symbol rate permitted for RTTY or data emission transmissions on the 10 meter band.(G1C10) 19.6 kilobaud is the maximum symbol rate permitted for RTTY or data emission transmissions on the 2 meter band.(G1C11) 56 kilobaud is the maximum symbol rate permitted for RTTY or data emission transmitted on the 1.25 meter and 70 centimeter bands.(G1C09)
Leave a Reply