4 level interface

[Shearerdk]

Hey

I need some help, I am looking for a 4 level interface. I need to use at lest a baud of 2400
Does someone know where I can find a working diagram or where I can buy this interface. I really need this.

 

[ka3jjz]

I'm curious - why would you need a 4 level interface, unless you're looking to decode something like FLEX (which goes without saying is a nono in the US...)

Anyway, the Wiki on this site is your friend; check the bottom of this page

73s Mike

 

[Shearerdk]

I'm curious - why would you need a 4 level interface, unless you're looking to decode something like FLEX (which goes without saying is a nono in the US...)

Anyway, the Wiki on this site is your friend; check the bottom of this page

73s Mike

the wiki ?

 

[ka3jjz]

Yes, there's a series of Wikipedia pages built into this site; just click on the word 'page' in my message and you'll be taken to the appropriate place.

If you want ot get a better idea of all the Wiki pages on this site, just scroll to the top, then look at the blue tool bar. Click on 'Wiki' and you'll be taken to the main page.

 

[Shearerdk]

Yes, there's a series of Wikipedia pages built into this site; just click on the word 'page' in my message and you'll be taken to the appropriate place.

If you want ot get a better idea of all the Wiki pages on this site, just scroll to the top, then look at the blue tool bar. Click on 'Wiki' and you'll be taken to the main page.

that one does only support up to 1200 baud and i need at least 2400

 

[ka3jjz]

No, that's simply not true. Here in the US the circuits that you see there are some of the ones that are sometimes used for monitoring 3600 baud control channels; but if you're dead set on a 4 level interface, go 2/3 down that page for a full schematic. The section is called the '4-LEVEL INTERFACE'

I see no reason why any of those would have a problem monitoring a 2400 baud signal. 73s Mike

 

[Shearerdk]

but if you're dead set on a 4 level interface, go 2/3 down that page for a full schematic. The section is called the '4-LEVEL INTERFACE'

73s Mike

well i am not becores i dont know mutch about this. i will look closer at this and write back soon. Thank for you help, and happy new year

 

[Shearerdk]

No, that's simply not true. Here in the US the circuits that you see there are some of the ones that are sometimes used for monitoring 3600 baud control channels; but if you're dead set on a 4 level interface, go 2/3 down that page for a full schematic. The section is called the '4-LEVEL INTERFACE'

I see no reason why any of those would have a problem monitoring a 2400 baud signal. 73s Mike

okay you mean that this interface
http://www.radioreference.com/wiki/images/4/4e/Circut.gif

can support baud 2400 and work with uniden scanners ?

 

[ka3jjz]

Most data slicers are device independent (doesn't matter whether it's Uniden or not), so with the proper tap done inside the radio, and the proper software, I'd say it's possible.
A 4 level interface will work with speeds up to 9600 baud. I'm not familiar enough with the Danish system you are trying to monitor, but again, with the proper tap inside the radio, and software, it's very possible it would work.

 

[Shearerdk]

Most data slicers are device independent (doesn't matter whether it's Uniden or not), so with the proper tap done inside the radio, and the proper software, I'd say it's possible.
A 4 level interface will work with speeds up to 9600 baud. I'm not familiar enough with the Danish system you are trying to monitor, but again, with the proper tap inside the radio, and software, it's very possible it would work. Follow the instructions to find the link as given in the previous message.

thanks. butt the Chip used here: http://www.radioreference.com/wiki/images/4/4e/Circut.gif

is the name of that chip, just 741 ? no letters ?

 

[ka3jjz]

Yes, and there are several variations of that chip that would likely also work.
I don't wish to appear rude, but it's clear you're not particularly versed in electronics. I'd strongly suggest getting a friend who is a ham or otherwise skilled in this field to help you out. You would also need to install a new output (a tap, as it's sometimes referred to) in your radio; this is something that you or someone else would need to do. I don't believe you could just feed a 2400 baud signal from the headphone or speaker jack and make it work.

73s and GL...Mike

 

[Shearerdk]

Yes, and there are several variations of that chip that would likely also work.
I don't wish to appear rude, but it's clear you're not particularly versed in electronics. I'd strongly suggest getting a friend who is a ham or otherwise skilled in this field to help you out. You would also need to install a new output (a tap, as it's sometimes referred to) in your radio; this is something that you or someone else would need to do. I don't believe you could just feed a 2400 baud signal from the headphone or speaker jack and make it work.

73s and GL...Mike

are you thinking of that i should make a "discriminator output" to ? is soe, do you know where i can find a diagram of that to ?

 

[ka3jjz]

Yes, and it's probably a local one to you as well... Mods.DK has quite an extensive list of scanners, and many of them have mods that list the specific place you need to install the tap. It's probably one of the best known sites on the Web for such information

73s Mike