uhf radio

I guess my question is when a job lists "Must have HF/VHF/UHF radio interception experience", what does that mean? What types of radio communications fall under this spectrum? Video? Any info is always helpful.
***I know what HF/VHF/UHF stands for, I was wondering what type of communications fall in this spectrum.***

These are frequencies involved in AM/FM radio broadcast, public service broadcast, military frequencies, Ham radio, TV, business 2-way radio service, radar, experimental bands and frequencies, cell phones, pagers, satellite communications, etc.

See: SPECTRUM CHART
http://www.adec.edu/tag/specturm.html

Video is usually specific to a range of frequencies in the VHF and UHF spectrum with a bandwidth of 6 MHz spacing with video frequencies about 4.5 MHz above the sound frequency.

See: Television Frequency Table
http://www.csgnetwork.com/tvfreqtable.ht ml

See: Video Deck Frequency Response
http://www.bealecorner.com/trv900/sweep/ sweep.html

2009-01-18 16:05:18 by GreasyGato79

This is the Motorola MotoTRBO UHF Radio set up for ITB.

I have been given a GME ELECTROPHE TX 4000 and i have added a GME AE4018K1 477 Mhz fiberglass ariel and i dont seem to be able to get any reception on any channels i have not used uhf before ( but have used 27 Mhz ) )so not familar on how it works or what channels are what so if someone could put in the right direction i would be grateful even with some suggested web sites many thanks

the freq that it is programed too may not be used in your area

2007-04-01 18:29:18 by onesready

Wide Narrow Band (Frequency Range: 450-470 MHZ)
QT/DQT with Computer Programmable
15 Channels plus 1 Scan Channel
Includes Desktop Charger,Battery,Antenna Belt Clip
Output Power 5W/1W. Range: 2 to 3 miles

Main use will be communicating with other truckers while travelling the NSW highways. What advantage do the UHF radios have over the AM radios ?? Thanks for your opinion.

Better off with a cb it cheaper or ask around and find out what the trucker are using.

2007-01-14 18:55:56 by shotie

Price: $129.95 $64.47

Mfg #: P324
Professional Hand-Held Radio# TX output power: 4-watt or 1-watt# 32 programmable channels and 10 pre-programmed channels# 133 codes including 50 CTCSS and 83 CDCSS values# 25kHz-12.5kHz bandwith# Ingress protection rating IP52# Programmable TX time out timer (30 sec - 5 min)# Backlit LCD display and emergency/hands free key# Talk confirmation tone/roger beep# All channels scan and priority scan function

I am considering purchasing a Dual band ham radio. I have been looking up some research and find that other hams are saying UHF travels shorter physical distance, but through buildings better. does this mean it travels through buildings in an urban environment, or does it transmit and recieve better while you are actually in a building? and does VHF go much farther than UHF signals? any information to add is greatly appreciated to this new ham! thanks a lot!

Welcome to the hobby of Amateur Radio (HAM Radio).

The main difference between VHF and UHF are the frequencies they broadcast on. 2 Meter radios (VHF) operate between 144.0 and 148.0 Mhz. 70 Centimeter (UHF) radios operate at 420 Mhz to 450 Mhz.

Granted, Different frequencies do behave differently under varied circumstanses. VHF frequencies makes it through trees and rugged landscapes, but not as well as UHF does. However, if VHF and UHF signals wave were transmitted over an area line-of-sight, the VHF signal would travel almost twice as far. This makes VHF easier to broadcast over a long range. Some of this should have been covered in your testing. You may want to go back to your review book(s) and read up on radio propagation. Understanding it will improve your operating practices.

Most amateur radio operators and repeater operators operate on either (or both) UHF or VHF, so it's a great idea to get a dual band radio, especially if you're just starting out. The local clubs/organizations around here almost all have repeaters on both bands.

73! - N2ZUE

2009-01-03 12:05:23 by Beno

On a boat, as in the channels, do they work the same way in frequency and channels?

UHF = ultra-high frequency = frequency range from 300 MHz to 3 GHz
VHF = very-high frequency = frequency range from 30 MHz to 300 MHz

Marine VHF radios in the Americas operate on specific channels between 156 MHz and 162.5 MHz. UHF CB radios from Australia and New Zealand operate around 477 MHz, so they are incompatible with VHF marine radios. There are no primary allocations in the United States for marine radios at UHF, although UHF portables are often used dockside. The main frequency range typically referred to as UHF in the Americas is 450-470 MHz, but those frequencies are allocated to business users, public safety agencies, etc. Attempting to use in the Americas a UHF radio from another part of the world would be a bad idea, as it could easily end up interfering with local police, fire, ambulance, etc. communications, which would be likely to bring swift enforcement action from the U.S. federal government.

So, no, a UHF radio is not the same as a VHF radio, and no, a UHF radio would not be suitable for use in the Americas on a boat. VHF marine radios are mass produced and preprogrammed to the standard channel assignments, so they may be obtained quite inexpensively.

2007-11-04 15:15:14 by Libby