Weird Issue

Aircraft, traffic control, air services

Moderators: Infernal, Nafenn, numloxx

Post Reply
freshy10
Posts: 3
Joined: Fri Mar 27, 2009 11:38 pm

Weird Issue

Post by freshy10 »

Hey everyone,

Have been around in this forum for ages, great info inside, but still my first post...
My problem is with my scanner.
I seem to be recieving Radio Fremantle (107.9MHz happens to be the last FM freq) whilst tuned into the aviation band (118.1, 119.4, 120.9). Does this happen to anyone else or is it on my end (scanner, antenna)? I have a Uniden UBC340CRS and some conical antenna from Prestige Comm.

Any help would be great,

Thanks
Freshy
robbage
Moderator
Moderator
Posts: 2993
Joined: Sat Feb 09, 2008 10:06 am
Amateur callsign: VK6UFO_VK6RN
Scanners and Receivers:  
Scanners/receivers
Diamond Welz WS1000 wideband handheld
Radioshack Pro 28 handheld
Uniden UBC72XLT handheld
Uniden UBC73XLT handheld
Uniden UBC330CRS desktop

Two-way
Yaesu VX-3R 2m/70cm Ham TRX and wideband RX handheld
Yaesu FT-1802M 2m Ham TRX mobile x 2
Yaesu FT-7800R 2m/70cm Ham TRX and wide band RX mobile
Icom IC-208H 2m/70cm Ham TRX and wide band RX mobile
Icom IC-706MKIIG all-band all-mode Ham TRX mobile
Icom IC-V85 2m VHF Ham TRX handheld
Wouxun KG-UVD1P VHF/UHF wideband Ham TRX handheld
Wouxun KG-679P VHF wideband Ham TRX handheld
Wouxun KG-713 UHF wideband Ham TRX handheld
Location: Just on the border of your waking mind

Re: Weird Issue

Post by robbage »

Do you live in or near Fremantle? If so you might be getting drowned out due to proximity. Otherwise it might be an image frequency. I can pick up most of the commercial FM stations when I'm tuned around 144.5 MHz on one scanner. Very annoying. I'm surprised it's that much of a problem considering you're in an AM band.
Rob
OF78WD
 Amateur moderator
.
Arguing with a fool proves there are two
freshy10
Posts: 3
Joined: Fri Mar 27, 2009 11:38 pm

Re: Weird Issue

Post by freshy10 »

robbage wrote:Do you live in or near Fremantle?
I live in Melville.

Is the image frequency an issue with Fremantle Radio's transmission equipment?

Sorry if this is a stupid question as i'm not really that knowledgeable when it comes to scanning, i mainly use mine for listening to ATC.
robbage
Moderator
Moderator
Posts: 2993
Joined: Sat Feb 09, 2008 10:06 am
Amateur callsign: VK6UFO_VK6RN
Scanners and Receivers:  
Scanners/receivers
Diamond Welz WS1000 wideband handheld
Radioshack Pro 28 handheld
Uniden UBC72XLT handheld
Uniden UBC73XLT handheld
Uniden UBC330CRS desktop

Two-way
Yaesu VX-3R 2m/70cm Ham TRX and wideband RX handheld
Yaesu FT-1802M 2m Ham TRX mobile x 2
Yaesu FT-7800R 2m/70cm Ham TRX and wide band RX mobile
Icom IC-208H 2m/70cm Ham TRX and wide band RX mobile
Icom IC-706MKIIG all-band all-mode Ham TRX mobile
Icom IC-V85 2m VHF Ham TRX handheld
Wouxun KG-UVD1P VHF/UHF wideband Ham TRX handheld
Wouxun KG-679P VHF wideband Ham TRX handheld
Wouxun KG-713 UHF wideband Ham TRX handheld
Location: Just on the border of your waking mind

Re: Weird Issue

Post by robbage »

freshy10 wrote:I live in Melville.

Is the image frequency an issue with Fremantle Radio's transmission equipment?
Image frequency is a function of the receiver (scanner). The transmitter site appears to be at " Community Radio Broadcast Site View Tce EAST FREMANTLE" That might give you some idea how close they are to you. Looks fairly close to me. I'm not sure there's any easy way to solve your problem. Are you definitely using AM to receive on the air band?
Rob
OF78WD
 Amateur moderator
.
Arguing with a fool proves there are two
freshy10
Posts: 3
Joined: Fri Mar 27, 2009 11:38 pm

Re: Weird Issue

Post by freshy10 »

robbage wrote:Are you definitely using AM to receive on the air band?
Not sure what you mean...
I'm just putting the frequency into the scanner. It must be the correct freq as I can still pick up the transmissions.
robbage
Moderator
Moderator
Posts: 2993
Joined: Sat Feb 09, 2008 10:06 am
Amateur callsign: VK6UFO_VK6RN
Scanners and Receivers:  
Scanners/receivers
Diamond Welz WS1000 wideband handheld
Radioshack Pro 28 handheld
Uniden UBC72XLT handheld
Uniden UBC73XLT handheld
Uniden UBC330CRS desktop

Two-way
Yaesu VX-3R 2m/70cm Ham TRX and wideband RX handheld
Yaesu FT-1802M 2m Ham TRX mobile x 2
Yaesu FT-7800R 2m/70cm Ham TRX and wide band RX mobile
Icom IC-208H 2m/70cm Ham TRX and wide band RX mobile
Icom IC-706MKIIG all-band all-mode Ham TRX mobile
Icom IC-V85 2m VHF Ham TRX handheld
Wouxun KG-UVD1P VHF/UHF wideband Ham TRX handheld
Wouxun KG-679P VHF wideband Ham TRX handheld
Wouxun KG-713 UHF wideband Ham TRX handheld
Location: Just on the border of your waking mind

Re: Weird Issue

Post by robbage »

Rob
OF78WD
 Amateur moderator
.
Arguing with a fool proves there are two
Nafenn
Moderator
Moderator
Posts: 1429
Joined: Tue Aug 19, 2008 10:06 pm
Location: Ellenbrook, WA
Contact:

Re: Weird Issue

Post by Nafenn »

freshy10 wrote:
robbage wrote:Are you definitely using AM to receive on the air band?
Not sure what you mean...
I'm just putting the frequency into the scanner. It must be the correct freq as I can still pick up the transmissions.
AM or amplitude modulation is what is used by the air band, where some radio stations (including the station you quoted) use FM, or frequency modulation.
Nathan Fenn
WARSUG Aviation Band & Reviews Moderator

Anything I say is my opinion, and has nothing to do with/does not reflect the views of anyone I was/am/will be involved with/employed by/volunteer for/associated with. There, I think that should cover it!
robbage
Moderator
Moderator
Posts: 2993
Joined: Sat Feb 09, 2008 10:06 am
Amateur callsign: VK6UFO_VK6RN
Scanners and Receivers:  
Scanners/receivers
Diamond Welz WS1000 wideband handheld
Radioshack Pro 28 handheld
Uniden UBC72XLT handheld
Uniden UBC73XLT handheld
Uniden UBC330CRS desktop

Two-way
Yaesu VX-3R 2m/70cm Ham TRX and wideband RX handheld
Yaesu FT-1802M 2m Ham TRX mobile x 2
Yaesu FT-7800R 2m/70cm Ham TRX and wide band RX mobile
Icom IC-208H 2m/70cm Ham TRX and wide band RX mobile
Icom IC-706MKIIG all-band all-mode Ham TRX mobile
Icom IC-V85 2m VHF Ham TRX handheld
Wouxun KG-UVD1P VHF/UHF wideband Ham TRX handheld
Wouxun KG-679P VHF wideband Ham TRX handheld
Wouxun KG-713 UHF wideband Ham TRX handheld
Location: Just on the border of your waking mind

Re: Weird Issue

Post by robbage »

I should pay more attention to what's posted. It was before 6am though ;-)
What Nathan said.
Rob
OF78WD
 Amateur moderator
.
Arguing with a fool proves there are two
Post Reply