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  • Is the National Calling Frequency actually used?
    146 520 MHz is the national calling frequency for FM voice It's a "simplex" frequency, meaning that you call on this frequency and then listen for a reply on the same frequency
  • Why is there a repeater on 146. 46? Isnt that a simplex frequency?
    3 I have a commercial GE Phoenix transceiver that I sent out to be programmed on 146 460 but have been informed by a club that my transmissions are interfering with their repeater that has a 146 460 input According to the ARRL band plan this is a simplex frequency How is this happening? I have complied and have quit using the radio
  • Why can I connect simplex at 146. 52 but not at 145. 200 and 147. 000 . . .
    In partcular, 146 52 is the 2m FM voice calling frequency and should not be used for digital modes like winlink Additionally, just because there is a standard list of frequencies doesn't mean you can just pick one and expect to get a connection
  • united states - Whats the difference between national calling . . .
    39 On the 2 meter and 70 centimeter band plans published by the ARRL, what is the difference in intended use between the calling frequencies (144 200, 432 10 MHz) and the simplex calling frequencies (146 52, 446 00 MHz)?
  • 1 8 wave 3-element 2m beam antenna - Amateur Radio Stack Exchange
    Center frequency 146 520MHz Driven element is 1 8 wave 10 25" long set at 6 125" from the front Reflector element is 5 8 wave at 15 3" and 15 3" from driven element to the back Director element is 1 2 wave at 12 25" and set at the front Also, trying to figure out how to connect my SO239
  • callsign - Proper way to announce call sign at start end - Amateur . . .
    I think I've heard both on 146 520 (But I need practice keeping track of callsigns) And just to round out the question, at the end of the conversation I've heard various ways of ending like "ABC123 clear", "ABC123", and more
  • rfi - Strange interference - consistent series of beeps chrips at . . .
    The power supply is an Alinco DM-330MV While studying for the Technician exam I've been listening, mostly on 10 meters, and I've noticed an odd interference pattern - every 145-146 KHz I hear a steady series of beeps or chirps I've hear them at 28 134 MHz, 28 280 MHz, 28 425 MHz, and 28 571 MHz
  • Calculating Antenna Length on the FCC Exam vs. in Reality
    Example 146Mhz 300÷146=2 05 meters 2 05×39= 79 95 inches full length in inches 79 95÷2= 39 95 inches 1 2 wave length in inches 39 95÷2= 19 985 inches 1 4 wave length in inches Answer on test is 19 Example 6m Meters already given 6×39= 234 inches full wave length in inches 234÷2= 117 inches 1 2 wave length in inches Answer on test
  • Should I chose a vertical or a horizontal HF antenna?
    Summary If you can have only one antenna and can chose between a vertical HF antenna or a relatively high horizontal HF antenna, go for the horizontal antenna Modelling results In January 2008, L B Cebik, W4RNL (SK) published what was going to be the last entry of his seminal 10-10 News series It turned out to be an interesting gain comparison of single element 28 4MHz antennas modelled
  • How To Program Radiodditys QB25 Manually (Without Software)
    Example 146 1000) Enter TX Tone (if needed) Save to the same channel as RX frequency - Menu 44 (Hold the Right knob in until it returns to the operating screen) Change to Memory, Select Channel, and check operation





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