Omega Owners Forum

Please login or register.

Login with username, password and session length
Advanced search  

News:

Please play nicely.  No one wants to listen/read a keyboard warriors rants....

Pages: [1] 2  All   Go Down

Author Topic: Very cheap or free radio scanner wanted  (Read 1694 times)

0 Members and 1 Guest are viewing this topic.

Martin_1962

  • Guest
Very cheap or free radio scanner wanted
« on: 09 February 2009, 21:35:53 »
For my fob repair I would liek to monitor the RF out, so would need a receiver.

Does anyone have an old or unwanted scanner they no longer want?

Or where I could get a kit I could build of one?

Thanks

Martin

I tried freecycle but they have changed their rules so I deleted all of my group memberships
Logged

iainb

  • Senior Member
  • ****
  • Offline Offline
  • Gender: Male
  • West Midlands
  • Posts: 523
    • View Profile
Re: Very cheap or free radio scanner wanted
« Reply #1 on: 09 February 2009, 21:50:10 »
Hi Martin, Give us a clue on frequency and band you need to cover !
Logged

VXL V6

  • Omega Lord
  • *****
  • Offline Offline
  • Gender: Male
  • Warwickshire
  • Posts: 9877
    • 530D M Sport, Elite 3.2
    • View Profile
Re: Very cheap or free radio scanner wanted
« Reply #2 on: 09 February 2009, 21:51:02 »
Somewhere around 433.92Mhz aren't they?

« Last Edit: 09 February 2009, 21:51:36 by VXL_V6 »
Logged

Martin_1962

  • Guest
Re: Very cheap or free radio scanner wanted
« Reply #3 on: 09 February 2009, 22:30:30 »
Yes - I know there are a lot of electronics experts and magies on here so worth a go ;D
Logged

Kevin Wood

  • Global Moderator
  • *****
  • Offline Offline
  • Gender: Male
  • Alton, Hampshire
  • Posts: 36432
    • Jaguar XE 25t, Westfield
    • View Profile
Re: Very cheap or free radio scanner wanted
« Reply #4 on: 09 February 2009, 22:53:03 »
Will keep an eye out. 433.92 is within the 70cm amateur band. It is useful to get some confirmation that they are transmitting. The 3 different types have distinctive sounds too.

You can get little receiver modules for WT exempt bands. In fact, I think I might have one or two in the junk box. Will have to check....

Kevin
Logged
Tech2 services currently available. See TheBoy's price list: http://theboy.omegaowners.com/

zirk

  • Omega Queen
  • *****
  • Offline Offline
  • Gender: Male
  • Epping Forest
  • Posts: 11444
  • 3.2 Manual Special Saloon ReMapped and LPG'd and
    • 3.2 Manual Special Estate
    • View Profile
Re: Very cheap or free radio scanner wanted
« Reply #5 on: 10 February 2009, 02:14:20 »
Hi Martin,

not too sure what your trying to monitor and why?, Freq., Demod Audio, FSSK Data, Spectrum, O/P power, Signal Strenght?

Give us a clue?, Im a Radio Communications Engineer, might be able to help?  :y
Logged

Kevin Wood

  • Global Moderator
  • *****
  • Offline Offline
  • Gender: Male
  • Alton, Hampshire
  • Posts: 36432
    • Jaguar XE 25t, Westfield
    • View Profile
Re: Very cheap or free radio scanner wanted
« Reply #6 on: 10 February 2009, 09:29:55 »
Thinking a little further, if you simply want to establish that it's transmitting you could knock up a simple diode detector probe which you could attach to the antenna strip on the PCB. Put a bit of gain on it and you could have an LED that flashes whenever it transmits.

Kevin
Logged
Tech2 services currently available. See TheBoy's price list: http://theboy.omegaowners.com/

Marks DTM Calib

  • Administrator
  • *****
  • Offline Offline
  • Gender: Male
  • West Bridgford
  • Posts: 34038
  • Git!
    • View Profile
Re: Very cheap or free radio scanner wanted
« Reply #7 on: 10 February 2009, 09:36:13 »
I use a scope.....and a bit of wire as an aerial
Logged

Martin_1962

  • Guest
Re: Very cheap or free radio scanner wanted
« Reply #8 on: 10 February 2009, 10:43:42 »
Quote
Hi Martin,

not too sure what your trying to monitor and why?, Freq., Demod Audio, FSSK Data, Spectrum, O/P power, Signal Strenght?

Give us a clue?, Im a Radio Communications Engineer, might be able to help?  :y


Basically that it is transmitting and not just flashing the LED. I am not too well up on this - I am more practical level.
Logged

Martin_1962

  • Guest
Re: Very cheap or free radio scanner wanted
« Reply #9 on: 10 February 2009, 10:44:24 »
Quote
Thinking a little further, if you simply want to establish that it's transmitting you could knock up a simple diode detector probe which you could attach to the antenna strip on the PCB. Put a bit of gain on it and you could have an LED that flashes whenever it transmits.

Kevin

Sounds usefull :y
Logged

Martin_1962

  • Guest
Re: Very cheap or free radio scanner wanted
« Reply #10 on: 10 February 2009, 10:45:01 »
Quote
I use a scope.....and a bit of wire as an aerial


I don't have one of those either!
Logged

Martin_1962

  • Guest
Re: Very cheap or free radio scanner wanted
« Reply #11 on: 10 February 2009, 10:51:00 »
OK My electrical knowleage

I know what components do, I can read diagrams, I can tackle simple repairs and modifications, but I can't design a circuit or knock up somethink without instructions.

An example of my level is I was able to study the circuit diagram of a VCR, find a good source of IF, and mono sound, and a good place to reinsert stereo and also trigger stereo light, I had to solder 1 wire to one board, replace an interboard loom, cut one track and solder another lead back. I also fitted a load of phono sockets to the back panel.

Kevin and Mark are beyond me but I would understand if they took it carefully.
Logged

Marks DTM Calib

  • Administrator
  • *****
  • Offline Offline
  • Gender: Male
  • West Bridgford
  • Posts: 34038
  • Git!
    • View Profile
Re: Very cheap or free radio scanner wanted
« Reply #12 on: 10 February 2009, 11:38:33 »
The simplest option for you Martin would be to buy a cheap receiver module i.e.:

http://cpc.farnell.com/jsp/search/browse.jsp?N=411+500001+1003120&Ntk=gensearch_003&Ntt=433mhz+receiver&Ntx=

and monitor the ouput with a scope or a simple LED.
Logged

Kevin Wood

  • Global Moderator
  • *****
  • Offline Offline
  • Gender: Male
  • Alton, Hampshire
  • Posts: 36432
    • Jaguar XE 25t, Westfield
    • View Profile
Re: Very cheap or free radio scanner wanted
« Reply #13 on: 10 February 2009, 12:22:01 »
Quote
The simplest option for you Martin would be to buy a cheap receiver module i.e.:

http://cpc.farnell.com/jsp/search/browse.jsp?N=411+500001+1003120&Ntk=gensearch_003&Ntt=433mhz+receiver&Ntx=

and monitor the ouput with a scope or a simple LED.

Blimey! They're cheap these days. £3.92 for an AM module is a no-brainer really. Not worth messing about with anything else. LED on the output and job's a good'un.

It will probably get triggered by every weather station / car fob / wireless alarm in the neighbourhood but then again, you don't have to connect an antenna to it.

Kevin
Logged
Tech2 services currently available. See TheBoy's price list: http://theboy.omegaowners.com/

Martin_1962

  • Guest
Re: Very cheap or free radio scanner wanted
« Reply #14 on: 10 February 2009, 12:49:09 »
Quote
Quote
The simplest option for you Martin would be to buy a cheap receiver module i.e.:

http://cpc.farnell.com/jsp/search/browse.jsp?N=411+500001+1003120&Ntk=gensearch_003&Ntt=433mhz+receiver&Ntx=

and monitor the ouput with a scope or a simple LED.

Blimey! They're cheap these days. £3.92 for an AM module is a no-brainer really. Not worth messing about with anything else. LED on the output and job's a good'un.

It will probably get triggered by every weather station / car fob / wireless alarm in the neighbourhood but then again, you don't have to connect an antenna to it.

Kevin


Tell me what I need and what else is required and I'll have a look :y
Logged
Pages: [1] 2  All   Go Up
« previous next »
 

Page created in 0.015 seconds with 16 queries.