Articles. Interfacing Down East Microwave Inc. (DEMI) Transverters This document is provided to aid in the connection and operation of DEMI transverters with most of the transceivers available on the new and used market today. The guidelines here are by no means the absolute, but will determine how we will configure your transverter if purchased from us assembled or help you to decide what options you will need if you wish to purchase a kit. The maximum advantage of any DEM transverter is obtained by using the highest quality IF (Transceiver) available. But don't let this deter you from using a converted 11 meter transceiver for your IF. These have been employed quite successfully for contesting, Earth / Moon / Earth, Rag chewing, and simplex FM operation. We have a lot of experience in interfacing but we have not seen every type and model in the world.
What is a Transverter? A transverter is a receive converter and a transmit converter joined by a common local oscillator. Why use a Transverter? Icom IC-7300 Transceiver, Icom 7300 GigaParts.com. Amateur radio frequency allocations - Wikipedia. Amateur radio frequency allocation is done by national telecommunications authorities. Globally, the International Telecommunication Union (ITU) oversees how much radio spectrum is set aside for amateur radio transmissions. Individual amateur stations are free to use any frequency within authorized frequency ranges; authorized bands may vary by the class of the station license. Radio amateurs use a variety of transmission modes, including Morse code, radioteletype, data, and voice.
Specific frequency allocations vary from country to country and between ITU regions as specified in the current ITU HF frequency allocations for amateur radio. National authorities regulate amateur usage of radio bands. Band characteristics[edit] Low frequency[edit] 2200 meters – 135.7–137.8 kHz – Very long antenna. Medium frequency[edit] High frequency[edit] 80 meters – 3.5–4.0 MHz (3500–4000 kHz) – Best at night, with significant daytime signal absorption. Very high frequencies and ultra high frequencies[edit] Midland 75-822 | 75 822 40 Channel Handheld C | Radioworld. Midland 75-822 40 Channel Handheld CB Radio with Car Adapter Features: 40-Channels 4-Watt Output Power - Delivers maximum communication range Squelch Control - Eliminates unwanted background noise Large, Backlit LCD - Multifunction display that is easy to read day or night Built in ANL - Improveds reception for a weak received signal Channel Scan - Automatically checks channels for activity NOAA Weather Radio - Instant access to weather/hazard information 24/7 Instant Channel 9/19 - Immediate access to emergency channel 9 and informational channel 19 Last Channel Memory - Turns on to the last user selected channel Keypad Lock - Locks in your selected settings 5 Memory Channels - Allows you to store your favourite channels for easy access Dual Watch - Monitors Channel 9 and a User Selected Channel Simultaneously HI/LO Power - Adjusts transmit power from 4 W to 1 W.
Battery Life Extender - Provides longer battery life Flexible, Removable Antenna with BNC connector External Headset Jack. Kenwood TS-2000, TS-2000X, TS-B2000, TS2000. HamExam.org: Free Amateur Radio Practice Tests with Flash Cards. QRZ Callsign Database Search by QRZ.COM. About the search types:(available to logged-in users) by Callsign Use for callsigns, aliases, prefixes and suffixes. Use a question mark (?) To match a single wildcard character or star (*) to match multiple characters. For example, try with AA* for prefixes, *ZZ for suffixes, or *XX* or even inside matches like AA? BQ. by Name/Addr A random text search. In Biography A random text search. By USA County Enter a county name and optionally, a comma followed by a 2-letter state code.
By Grid Square Enter a 4 to 6 character Maidenhead Grid Square, e.g. By DXCC Choose a DXCC Entity (country) to list. Notes: All punctuation is ignored and, upper vs lower case characters make no difference. An alias can be considered a "nickname", previous callsign, etc.. Don't see what you were looking for? Check out the Site Menu for more choices. eHam.net Home - Amateur Radio (Ham Radio) Community Site. Ham Radio Outlet. Repeaterbook.com - Home. Radio Spectrum Allocation | Federal Communications Commission.
The radio spectrum is the radio frequency (RF) portion of the electromagnetic spectrum. In the United States, regulatory responsibility for the radio spectrum is divided between the Federal Communications Commission (FCC) and the National Telecommunications and Information Administration (NTIA). The FCC, which is an independent regulatory agency, administers spectrum for non-Federal use (i.e., state, local government, commercial, private internal business, and personal use) and the NTIA, which is an operating unit of the Department of Commerce, administers spectrum for Federal use (e.g., use by the Army, the FAA, and the FBI). Within the FCC, the Office of Engineering and Technology (OET) provides advice on technical and policy issues pertaining to spectrum allocation and use. Download the FCC Online Table [Word | PDF] (8/31/16) Download the latest FCC Allocation History File [Word | PDF ] (8/31/16) Other useful links are:
Short Wave and Ham Radio Frequencies and BandPlans. Calling and Simplex Frequencies -- From 160M To Daylight Considerate Operator's Freq Guide - Who's Operating Where? - Or Should Be -- Includes DX Windows ITU Regions -- From The ITU Part 97 -- From The ARRL Modulation Types -- AM, SSB, FM, Pulse, etc Modulation Types -- From The ITU -- Authorized frequency bands, Frequency sharing requirements, Authorized emission types, Emission standards, RTTY and data emission codes, SS emission types.
Repeater Band Plans, USA -- From SHARKK Repeater Guides -- World Wide -- From Alaska To Zimbabwe LowFers - 137 kHz Report - From VE7SL Aviation General Aviation Monitoring Tutorial -- From N4JRI Military Aircraft Monitoring -- -- From N4JRI AirNav Homepage -- Loaded with Aviation Frequencies, Articles, Software -- much more Airport Information --By identifier or city/state NAVAID Frequencies -- US Aviation NDBs Data Base NDB's (Non Directional Beacons) - The Art of NDB DXing (link will hopefully come back soon) NDB's (All About) From Wikipedia.
Midland Two Way Radios - Buy Your Midland Two Way Radio Here! GB4000 Frequency Machine - All Rife Frequencies. Google Maps APRS. APRS: Automatic Packet Reporting System.