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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 (It is "national" in the US, but that does not guarantee that many people are actively monitoring this frequency!
- united states - Whats the difference between national calling . . .
The simplex calling frequencies (146 520 446 000 Mhz) are intended for FM simplex communication, while the other pair (144 200 432 100) are for SSB In general use, the term "simplex" implies FM modulation since FM is commonly used in both simplex and duplex operation
- Why is there a repeater on 146. 46? Isnt that a simplex frequency?
SERA Band Plan 146 400 - 146 585 includes " alternate repeater inputs" that covers my question perfectly The ARRL ought to provide the advice you've offered to everyone on their site, IMO The club rep told me "We can't hear you on 146 460 but the repeater can with a tower on top of the mountain " so I thought the frequency was clear
- Why can I connect simplex at 146. 52 but not at 145. 200 and 147. 000 . . .
While winlink does have some commonly used frequencies, the ones you have listed are not in that list 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
- Calculating Antenna Length on the FCC Exam vs. in Reality
If you find the wavelength for the given frequency, then just find the type of antenna (quarter-wave), take the appropriate fraction of the wavelength, and convert said quantity to the appropriate units For example, the wavelength for a 146 MHz signal is 2 05 m, multiply by 39 and you have 80 inches
- What is a calling frequency? - Amateur Radio Stack Exchange
So, calling frequencies are well used For example, on 2-meters, you can agree to meet someone on 146 52 (2 meter simplex FM calling frequency) and then when contact is made QSY to some other open frequency It is not polite to tie up the calling frequency When I am mobile, the only VHF ops I do is hanging out on the 2-meter calling frequency
- rfi - Strange interference - Amateur Radio Stack Exchange
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
- 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
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