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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
  • 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
  • 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
  • What is a calling frequency? - Amateur Radio Stack Exchange
    Just a note - calling frequencies vary by region 146 520 MHz is the 2m calling frequency in the FM mode in Canada and the US, but not in most countries Be sure to check if you operate in other countries!
  • 2m loop with sense antenna for DF - Amateur Radio Stack Exchange
    The 90° phase shift is easily accomplished with a short length of coax cable that is electrically 90° long (or an odd multiple thereof) If you use Belden 9258 (their RG8X), this would be a cable length of 1 foot, 4 5 inches at 146 MHz Add to this, the length of the coax coming from the loop antenna
  • united states - Choosing simplex frequency as a technician - Amateur . . .
    My brother and I just got our technician class license We live close enough to each other that we can use simplex on 2 meters or 440 How do we go about choosing the best frequency to use?
  • 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





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