Background noise
Moderator: yorky
Background noise
I listern to my local security (416.925).Is great at night but during the day i get every one else.Couriers,trucks bloody every one.Is there any way i can not get every one else just the security.THANKS
Re: Background noise
Which scanner model and antenna?
"VKI, NJ050 will you be attending the job?"
"Negative VKI, my desk is bolted to the floor".
WARSUG General Scanning Moderator
"Negative VKI, my desk is bolted to the floor".
WARSUG General Scanning Moderator
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Re: Background noise
Given the frequency I'd guess that it might be a trunking channel. i.e. the frequency is part of a pool of channels that are re-allocated to anyone who needs a channel at the time, which are sold to a large number of customers who then all think that they have their "own" channel. At night, the system is less busy so the security company is usually assigned that frequency.richard omeara wrote:I listern to my local security (416.925).Is great at night but during the day i get every one else.Couriers,trucks bloody every one.Is there any way i can not get every one else just the security.THANKS
The way to tell if it's trunking is there'll be a burst of noise (data) at the start and/or end of each over, which is the radio communicating with the trunking controller.
There's not a lot you can do as the most popular trunking systems we use in Australia on 400MHz (MPT) isn't scannable with trunk tracker scanners.
Gavin Rogers; VK6HGR
http://vk6hgr.ampr.org/
WARSUG forum administrator
Site and stream donations: https://www.paypal.me/vk6hgr
http://vk6hgr.ampr.org/
WARSUG forum administrator
Site and stream donations: https://www.paypal.me/vk6hgr
Re: Background noise
Ive got a Uniden 996t.Also a discone antenna on top of 2 story building.Im also about 2 km from an industrial area(osbourne park) that probably doesnt help.The coms do have a short blast at begining and a longer one about 4 seconds after coms finish.But there is no frequancy change.Its Stirling security if your interested.Could i use trunkview for mpt trunking.I did have a play with it 6 mounths ago.Didnt have the patiance.
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Re: Background noise
yeah I listen to that to (those damn sounds are really bloody anoying)
Re: Background noise
416.9250 shows as one of the Biscom Trunked frequencies off QV1.richard omeara wrote:Ive got a Uniden 996t.Also a discone antenna on top of 2 story building.Im also about 2 km from an industrial area(osbourne park) that probably doesnt help.The coms do have a short blast at begining and a longer one about 4 seconds after coms finish.But there is no frequancy change.Its Stirling security if your interested.Could i use trunkview for mpt trunking.I did have a play with it 6 mounths ago.Didnt have the patiance.
I have the Control Channel as 415.9250 (although that could have changed), and the Base frequency as 415.5625.
And yes, TrunkView is ideal. You can even set it up to only monitor a specific Prefix and Ident range (eg., your Security Co).
A couple of links that may be of use in setting up TrunkView:
Set Up
Audio
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Comint
Edit: Added Links.
Re: Background noise
Thats what i needed.A dumbies guide to mpt 1327.
Thanks Comint =D>
Thanks Comint =D>
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Re: Background noise
Cheers for the Freq too
Re: Background noise
There is a SIMPLE answer to this! You need to add in the CTCSS tone for the security company. It sounds like multiple services use the 1 frequency and that can be done rather easily as they won't heard each other either, they all would use their own ctcss tones. Do a CTCSS tone search at night and add that in to your scanner/s. That way you will get what you need.
Happy scanning,
Robb Wise,
Scanning Tasmania
www.scanningtasmania.org
Uniden UBC9000XLT & UBCD 996 & 396T. Icom RX7. SW: Sangean ATS 505 & 909
Robb Wise,
Scanning Tasmania
www.scanningtasmania.org
Uniden UBC9000XLT & UBCD 996 & 396T. Icom RX7. SW: Sangean ATS 505 & 909
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- Site Admin
- Posts: 2610
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- Amateur callsign: VK6HGR
- Scanners and Receivers: Various Yaesu, Kenwood, Tait, Simoco and Philips'
- Location: Perth, Western Australia
- Contact:
Re: Background noise
Not in this case. You're thinking of a community repeater. This particular system is trunking, and doesn't use CTCSS at all - rather the trunking controller dishes out channels as users need them.Robb wrote:There is a SIMPLE answer to this!
Gavin Rogers; VK6HGR
http://vk6hgr.ampr.org/
WARSUG forum administrator
Site and stream donations: https://www.paypal.me/vk6hgr
http://vk6hgr.ampr.org/
WARSUG forum administrator
Site and stream donations: https://www.paypal.me/vk6hgr
Re: Background noise
Tryed the CTCSS search.No luck.The MPT trunking did work its just the constant data noise that gets to me.Thanks any way.
Re: Background noise
If you have TrunkView set up correctly, you shouldn't be hearing any data noise.richard omeara wrote:Tryed the CTCSS search.No luck.The MPT trunking did work its just the constant data noise that gets to me.Thanks any way.
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Comint
Re: Background noise
When there is no frequancy im still hearing the data sound you hear on the control station.Its a work in progress.Also some times it doesnt return to control station.