how do i find out more info for uhf repeaters in vic?- dargo/high country
want to plan a trip with bikes and 4wds and need to find the best chanel to use?
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UHF ???
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Vic high country is not UHF friendly. Repeaters can be tripped at only some of the 'high points'. There's a repeater at Foster and one at Wangaratta.......If you're on Buller or Hotham you'll get something, but it's all so unreliable.
Best for distance in high country is sideband AM. If you have a sideband set with decent wattage you'll be able to communicate even if your at the bottom of a valley in rough terrain. ie. UHF's hate trees and valleys.......
The basic radio rule....Hight is might
Best for distance in high country is sideband AM. If you have a sideband set with decent wattage you'll be able to communicate even if your at the bottom of a valley in rough terrain. ie. UHF's hate trees and valleys.......
The basic radio rule....Hight is might
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MUD EMPIRE wrote:sideband AM
i thought it was AM or LSB or USB or FM or CW 
why does everyone call 27dregs "AM" all the time?
my GUBanzy wrote:Dial up internet.........you'd post something and come back 2 beers later to see if it loaded.
so i cant transmitt FM on 27dregs?BASSYK wrote:cos 27Megs uses "AM'j-top paj wrote:MUD EMPIRE wrote:sideband AM
why does everyone call 27dregs "AM" all the time?
UHF uses FM
see definition of "Amplitude Modulation" and "Frequency Modulation"
my GUBanzy wrote:Dial up internet.........you'd post something and come back 2 beers later to see if it loaded.
what i meant was everyone commonly refers to 27dregs as "AM" rather than HF cb.
if everyone calls UHF cb that then why not call HF what it actually is?
to me it just sounds so odd
if everyone calls UHF cb that then why not call HF what it actually is?
to me it just sounds so odd
my GUBanzy wrote:Dial up internet.........you'd post something and come back 2 beers later to see if it loaded.
Interesting. I've always interpreted "AM" to imply both sidebands are present on a full carrier. Anything else should be specified.festy wrote:Not legally - but yes, there is FM activity on 27MHz.
AM is actually 'AM double sideband', SSB is 'AM single sideband suppressed carrier'
It's convention. Citizen Band in Oz started with the 27MHz AM/SSB sets, and later we got the 477MHz UHF stuff - all power limited.j-top paj wrote:what i meant was everyone commonly refers to 27dregs as "AM" rather than HF cb.
if everyone calls UHF cb that then why not call HF what it actually is?
to me it just sounds so odd
The term HF is also commonly applied to the "RFDS style" transceivers which operate with 100W plus - no license required if you subscribe to one of the "services" available.
this site is the same as the telsat site and is way out of wack..longlux wrote:http://oztravelers.6.forumer.com/viewfo ... 15aa530a5c
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It seems to have the same site you postedhzj75 wrote:this site is the same as the telsat site and is way out of wack..longlux wrote:http://oztravelers.6.forumer.com/viewfo ... 15aa530a5c
http://oztravelers.6.forumer.com/viewtopic.php?t=38
Workplace Safety :
Destroying our forests one Take 5 at a time.
Every time you do a Take 5 an Orangutan cries.
https://www.facebook.com/shadowthetravelcat" onclick="window.open(this.href);return false;
Destroying our forests one Take 5 at a time.
Every time you do a Take 5 an Orangutan cries.
https://www.facebook.com/shadowthetravelcat" onclick="window.open(this.href);return false;
AM is just the modulation method - amplitude modulation, i.e. the waveform is modulated by varying the height of the wave (y axis of the waveform), FM is frequency modulation, whereby the wave is modulated by varying the frequency, or x axis of the wave.-Scott- wrote:Interesting. I've always interpreted "AM" to imply both sidebands are present on a full carrier. Anything else should be specified..festy wrote:Not legally - but yes, there is FM activity on 27MHz.
AM is actually 'AM double sideband', SSB is 'AM single sideband suppressed carrier'
An AM DSB (A3E designation for voice telephony) transmission has the signal (i.e. voice) 'encoded' into the carrier, with both sidebands in tact.
A typical SSB transmission then takes this and suppresses one of the sidebands (the upper in the case of LSB) and also suppresses the carrier, leaving pretty much only a single sideband in tact in the transmission. This is designates a J3E transmission.
There are other AM modes in use too - Vestigal sideband is used in TV transmissions (C2F?), as well as independent sidebands and variable carrier.
Then there's other forms of modulation like Pulse modulation (PM), but that *really* has no relevence in this thread
73 de vk2***
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