ham frequencies

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ham frequencies

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Antennas : Collinear
  • VHF Collinear Antenna - This antenna will cover the 2 meter Ham Radio frequencies. This collinear antenna has a total gain factor approx 6 to 7dbd on two meter band
    [ Hits: 2291 | Votes: 6 | Rating: 4 ]
Antennas : Microwave
  • Cavity antennas - Cavity antennas are weatherproof antennas for UHF and microwave frequencies. Require more metal for the same decibels of antenna gain but a cavity antenna is relatively easy to weatherproof.
    [ Hits: 305 | Votes: 2 | Rating: 5.5 ]
Antennas : Quad
  • Build a Stronger 2 Element Quad - A Different way to construct a tried and true antenna out of PVC, especially for the 10 meter and higher frequencies.
    [ Hits: 149 | Votes: 0 | Rating: 0 ]
Operating Aids : Radio Spectrum
  • Satellite Frequency List - All Satellites Frequency List Update. A complete list of satellite frequencies available in several formats, including info on Satellite Uplink and Downlink frequencies Beacon, operative Mode, Callsign and Weather sat functionality.
    [ Hits: 140 | Votes: 1 | Rating: 1 ]
  • Emergency ham radio frequencies - These frequencies have been adopted into the bandplans of each IARU region to be a focus for emergency communications in their areas. They are not absolute frequencies but instead are centres of activity and emergency communications may be found around 20kHz from these centres. Some countries may maintain other emergency frequencies in their own bandplans due to local requirements, QRM etc
    [ Hits: 78 | Votes: 0 | Rating: 0 ]
Operating Modes : Microwave
  • Amateur Radio Microwave - Introduction - Introdcution to Amateur Radio Microwave. A 21 page presentation of ham radio microwaves concepts for beginners. Frequencies, modes and activities. How to get started, what equipment is needed and some pictures of ham radio microwave station setups
    [ Hits: 407 | Votes: 0 | Rating: 0 ]
Operating Modes : Portable Operations
  • Hamstick Experimentation: A Day of Surprising Results - In his POTA activation, WK4DS experimented with radials for hamstick antennas. Despite sun and RF noise challenges, successful connections were made. Surprisingly, tuned radials proved unnecessary, simplifying setup. Hamsticks demonstrated versatility across frequencies. Increased power improved signal quality, sparking his curiosity for further exploration in radio technology.
    [ Hits: 44 | Votes: 0 | Rating: 0 ]
Operating Modes : Repeaters
  • Repeater operating procedure - Guidelines on operating on ham radio repeaters frequencies
    [ Hits: 2654 | Votes: 1 | Rating: 10 ]
  • Ham Radio: Using Repeaters - The most basic form of repeater receives communication on one frequency and re-transmits at a different frequency. This is known as duplex communication. Repeaters are generally set up to operate with FM modulation on the amateur bands within the VHF (30 MHZ – 300 MHZ) and UHF frequencies (300 MHZ – 3 GHz). These are generally the frequencies used by handheld and mobile devices.
    [ Hits: 92 | Votes: 1 | Rating: 8 ]
Operating Modes : Repeaters : Repeater maps
  • UHF VHF Repeaters in Italy - List of VHF UHF ham radio repeaters in italy with frequencies and locations
    [ Hits: 2435 | Votes: 15 | Rating: 6.15 ]
Operating Modes : Satellites
  • Using a Baofeng handheld to work Satellites - How to program Baofeng handheld transceiver with satellite frequencies, and how to get alerts when satellites are visible by using a smartphone app. A beginners guide to work satellites with a common VHF handheld radio.
    [ Hits: 544 | Votes: 5 | Rating: 8.2 ]
Propagation : Beginner's Guide
  • Exploring the Spectrum From HF to UHF Frequencies - During radio's early days, high frequencies were under 30 MHz due to technical limitations. As understanding grew, components improved, allowing for higher frequencies like VHF and UHF up to 3 GHz. The HF band's long wavelengths provide unique propagation challenges influenced by solar activity. VHF and UHF bands face diffraction and reflection issues but offer diverse applications, from amateur radio to 5G and GPS technologies.
    [ Hits: 56 | Votes: 0 | Rating: 0 ]
Radio Equipment : HF Transceivers : Icom IC-706
  • IC-706 frequency expansion - This modification will allow the MkIIG to transmit on most of the frequencies that it receives on.
    [ Hits: 1450 | Votes: 2 | Rating: 1 ]
  • Icom 706MkIIG Frequency Calibration - Unlike older radios, the 706 uses only one crystal oscillator (called the Master Oscillator). All other frequencies in the radio (L.O., 3-4 I.F. stages, VFO, and CW-offset) are computer-derived from the Master Oscillator. This makes it relatively simple to frequency-align the radio, so that it agrees with the Frequency Display in all modes.
    [ Hits: 213 | Votes: 2 | Rating: 9 ]
Radio Scanning : Regional : Australia Radio Scanning : Scanner Frequencies
  • Hamilton county police scanner frequencies - Scanner Frequencies for Chattanooga / Hamilton County. Chattanooga Police Talkgroups, Chattanooga Fire / Rescue Talkgroups, Chattanooga City Services Talkgroups, police, Hamilton County Sheriff Talkgroups
    [ Hits: 27 | Votes: 0 | Rating: 0 ]
Radio Scanning : Weather
  • WEFAX Frequencies - List of latest published Weather Fax world wide schedule including frequencies and modes.
    [ Hits: 1868 | Votes: 12 | Rating: 3.25 ]
Software : iPhone
  • Ham Dashboard - Iphone App with list of nearby repeaters in the UK, along with details of input and output frequencies, a map, and a handy bearing arrow for each repeater.
    [ Hits: 866 | Votes: 1 | Rating: 10 ]
Technical Reference : Filters
  • Interdigital bandpass filter designer - Fill out the form to design a bandpass filter as described in the January 1985 issue of Ham Radio Magazine. These filters are generally limited to frequencies above 200 MHZ because their size is slightly longer than 1/4 wavelength
    [ Hits: 1115 | Votes: 6 | Rating: 7.67 ]
Technical Reference : Key Clicks
  • Preventing CW key clicks - Key clicks are generally undesired clicks or thumps generated by a CW transmitter as the key is put down or let up. How much does the rise time or bandwidth of a CW signal need to be limited to prevent other QSOs on adjacent frequencies from being annoyed by key clicks?
    [ Hits: 93 | Votes: 0 | Rating: 0 ]

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