UHF Repeater Channels

boobook

Well-Known Member
That emergency was caused by a 'Momentary lapse of reason'

Later transmissions were also heard
'Speak to Me'
'What should we do now?'
'Bring the boys back home.'
From the other side of the CB radio - 'Money'
Then when the helicopter arrived - 'Pigs on the wing'
Then a second helicopter arrived - 'Pigs on the wing II;
Then when the guys get home -'The heroes arrive'
After a few beers when arriving home - Comfortably numb
The lastly after a long day going to bed -'Not now John' - The final cut so to speak lol

Ok enough - Apologies to Pink Floyd. Great songs
 
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Barra GU

Well-Known Member
here's a handy piece of information for all CB users

VIC

CHANNEL
LOCATION

3
Aberfeldy

4
Ararat

4
Arthurs Seat

4
Bendigo

8
Bombala

8
Cavendish

3
Cranbourne area

6
Echuca

1
Eden Park

1
Eildon

3
Falls Creek

4
Hawkesdale

6
Healesville

2
Mansfield

5 - Emergency Repeater
Mansfield

4
Marambingo Hill

5 - Emergency Repeater
Melbourne (access via simplex)

7
Melbourne

8
Mt Alexander

8
Mt Cann

6
Mt Concorde

6
Mt Fatigue

7
Mt Gordon

7
Mt Granya

2
Mt Kerang

8
Mt Porepunkah - runs of batteries with solar charging - gives one beep normally but two when power is low.

6
Mt Seldom Seen

8
Mt Terrible

3
Mt Wombat

7
near Bendigo

1
Penshurst

2
Pyalong

5 - Emergency Repeater
Ruffy

7
Shepparton

1
St Arnaud

4
Traralgon

1
Walhalla

6
Wangandry

3
Weeaproinah

1
Whittlesea

8
Williamstown

4
Wodonga


Hi can someone please explain to me what all this stuff means???

Like from what i understand is if youre in any of those areas and are trying to get onto someone you're best using the channel mentioned for the correlated area?
 

Mulga63

Active Member
Couple of little UHF tidbits which I'm sure most know, but nevertheless:

In the last couple of months, there is a new automated message on repeat every couple of minutes talking about channels 1-8 and 31-38 being repeater channels audible on UHF on the Mornington Peninsula area. I don't know who has done it but I'm guessing it's a repeater owner. I can hear it on Phillip Island where I live often and it's very clear considering its travelling over water (something UHF doesn't like doing).

Also, Ch 5 in metro Melbourne is actively monitored by CREST Victoria (Community Radio Emergency Service Teams). You will regularly hear one of their operators transmit their message about keeping the channel clear when driving through Melbourne, especially after some oxygen thief has been transmitting on there.

I'm in Pakenham & receive the automated message loud & clear

Mulga
 

SmAsh_6861

Member
I'm in Pakenham & receive the automated message loud & clear

Mulga


Hmm, it's obviously something this side of town then. There is some radio club based out of Hastings, I wonder if they're doing it. It's clear as day to me all over Phillip Island.
 

99pc chimpanzee

Well-Known Member
Hi can someone please explain to me what all this stuff means???

Like from what i understand is if youre in any of those areas and are trying to get onto someone you're best using the channel mentioned for the correlated area?
Yes its confusing, basically your correct,if you have a repeater in area u are and have no clear line of sight it may help u reach others
This vid is Aussie and good,for it to sink in watching a few times doesn't hurt :)to get ya head around the ch 4/ch34 info,just remember if in area with a repeater ch2 For an example use repeater/duplex ch2 on uhf
 

darb

Well-Known Member
My first real use of a UHF repeater was down Bremer bay way... after realising there was a UHF repeater atop the huge hill behind the holiday house we were in. It could reach every bay in the entire region, and about 50km up the mian road coming into town. It was pretty handy actually as the girls had a handheld up at the house ... one mate could be bumbling around in town, while one of our 4wd's is out on a remote beac h... all crystal clear.

Obviously everyone else can hear the conversation, but not once have I heard anyone else actually using it.

I guess its all a bit moot in that there's also a telstra 4G tower on the same hill and we're getting reliable comms anyway which these days is just easier, but it's still pretty handy when the radio is right there at finger tips.

bremer.jpg
 

darb

Well-Known Member
to give some perspective, the tiny little bay you see in the above screenshot named "stream beach" is this one ;

Bremer-Coast-2014--1098.jpg
 

VK2US

Member
How near to a repeater station do you need to be ( obstacles etc not withstanding ) to be able to transmit / receive effectively. Looking at the repeater stations list published above, there seems to be a lot of distance between them. An example might be if you were in the Drouin ( Vict ) area, you have the Walhalla station many miles to the east, a couple even further north etc. Suppose I am just trying to understand how they work a bit more.
Any info would be great.
Thanks
This going to be less than helpful but line of sight. That is to say an unobstructed path.

Sitting here in SW Sydney I can access UHF repeaters more than 100 klms away as they're located in high positions but with a ridge line to the east of me stuff in Sydney is hidden.

There are exceptions to this, such as thermal ducting, but it's the best rule of thumb.

Here's a link to a site that allows you to check a path and even get a look at the profile.
 

boobook

Well-Known Member
From what I read here and elsewhere. I reckon 99% of 4wd CB users wouldn't know how to find or use a repeater if their life depended on it, unfortunately.

LOL

These Disney Princess edition ones may even be a bit complicated for lots of UHF users.

1669183799148.png


Ok I have finished winching, thanks for your help spotting, you can let the rope go now... over

LET IT GO LET IT GO! ..Over.
 
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Petunia

Well-Known Member
From what I read here and elsewhere. I reckon 99% of 4wd CB users wouldn't know how to find or use a repeater if their life depended on it, unfortunately.
oooo oooo ooo i'm gunna win de prize
see ya put ya cb on de channel ya put ya duplex mode on ya push de talky button then ye listen for the bounce back, if ye real lucky ye might heard de repeater fingy identity blurb then ye really nose ye got de repeater in ye sights [repeater this instruction four all repeater channels but not chanel number five, that a perfume]

what i win?? huh huh huh

no aloof condescending content portrayed
 
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Petunia

Well-Known Member
How near to a repeater station do you need to be ( obstacles etc not withstanding ) to be able to transmit / receive effectively.

The answer? ''About that far!''

A repeaters antennae range is set by what antennae it is, and your range is set by what antennae you have.
hence, the repeater may have a range of [fictitious] 100klm, your range [fictitious] 25 klm, if the 100 circle and 25 circle overlap, the range [fictitious] is 125klm
but
that probably won't be ''effectively'' the signal is there but the ''modulation'' [big word] is not, for the ensuing backlash, the word ''modulation'' herein refers to ''voice'' reproduction out a speaker at the other end, good old ten four roger rubber duck layman terms.

a rubber ducky antennae may only go 2 klm [again fictitious number], i have a custom built co-lineal that does 120klm [thats not a fictitious number][built by the guy who ran repeater 2 locally here and used one of said antennae to do so] so the range is possibly 122klm
but if i was theoretically 240 klm away from said repeater, i could make it in to the repeater then the signal is repeated for a further 120klm, so in theory i could possibly talk in a range of 360klm theoretically to the rubber duck antennae on top a hill with only a range of [fictitious] 2klm.

Then we get into ''beams'' and rotators for said beams allowing me to point my beam directly at another antennae, or a repeater antennae .... Scotty, set phasers to ''stun'' , aye aye Cap'n
or we go all out using house co-lineal antennae and half inch coaxial cable ........ in a car, i've never heard the order to set phasers to kill? but old mate soiled he pants the signal that put out when asked for a ''raaaaaadioooooo check''

as maintained, like realestate, uhf is antennae antennae antennae :cool:
 
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