hmm for me it look like very analogue.
WTF
then it send every time? So?!
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Modem?
- Thread starter Your_account
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i found an plug on ebay: 6 Pins Micrófono MIC Plug Tapones Femenino CB Radio-Conector 12mm / 16mm Enchufe | eBay
So does anyone here use an Modem for CB or Amateur Radio and can help me?
So does anyone here use an Modem for CB or Amateur Radio and can help me?
On 2 meter VHF, Yes for packet communications, for cb NO since it's illegal here in the U.S. Again, your help would come from someone in Austria.
. 73, n9zasYour account-
It looks like you have TX audio on pin 1. RX audio on pin 2. and grounding pin 3 will switch you into transmit mode. Most software packages for digital use a serial port pin to switch TX/RX. There are several plans on the Internet for interfaces of this type. Basically, the radio RX audio goes through a isolation transformer then into the Microphone or Line in on the computer sound card. Earphone out from sound card goes through another audio transformer to the Microphone of the radio. PTT (push to talk) is usually handled via a pin on a serial port -check the software you plan to use.
If you can let us know the equipment (computer, sound card and radio), we may be able to give more advice. For now I would get two or more of the microphone plugs and a few audio connectors for the sound card side. you will also need some audio isolation transformers which are readily available (ebay or any audio parts store). At that point, you will likely need to do a little experimenting before you are up and running.
Hope this helps,
It looks like you have TX audio on pin 1. RX audio on pin 2. and grounding pin 3 will switch you into transmit mode. Most software packages for digital use a serial port pin to switch TX/RX. There are several plans on the Internet for interfaces of this type. Basically, the radio RX audio goes through a isolation transformer then into the Microphone or Line in on the computer sound card. Earphone out from sound card goes through another audio transformer to the Microphone of the radio. PTT (push to talk) is usually handled via a pin on a serial port -check the software you plan to use.
If you can let us know the equipment (computer, sound card and radio), we may be able to give more advice. For now I would get two or more of the microphone plugs and a few audio connectors for the sound card side. you will also need some audio isolation transformers which are readily available (ebay or any audio parts store). At that point, you will likely need to do a little experimenting before you are up and running.
Hope this helps,
Win7 64Bit, Internal, Again: AE 5890 EU
Maybe I start with an Modem first.
Ok here are a couple of links
http://www.wa1wa.net/filespdf/pskhandbook.pdf
WM2U's Soundcard Interfacing Schemes
These two should get you started. remember that the actual mode should not make any difference-it is the hook up.
Based on the PDF file you posted earlier- the TX audio is pin 1 RX is pin 2 and the PTT is shorting pin 3 to ground. Ground is pin 5.
I would suggest you get a couple of plugs and just add some wire to each pin on one of them to test things. Hook the radio up to a dummy load and short pins 3 and 5- does the radio switch to transmit? open the sort and it should return to receive. (hopefully that is one thing solved
Now RX audio -connect a multimeter set for AC volts form pin 2 to pin 5. Open the squelch and see if the meter indicates audio -should be a low level ( AC millivolts) signal. this should verify the RX audio for the radio.
If those check out, the links above should let you finish the job.
Ebay also has vendors that make interfaces of this type for about 30-50 USD. IF you make your own remember to use isolation transformers in the audio paths -otherwise you are likely to run into problems with RF pickup and with the control signals getting into the audio.
Have fun
http://www.wa1wa.net/filespdf/pskhandbook.pdf
WM2U's Soundcard Interfacing Schemes
These two should get you started. remember that the actual mode should not make any difference-it is the hook up.
Based on the PDF file you posted earlier- the TX audio is pin 1 RX is pin 2 and the PTT is shorting pin 3 to ground. Ground is pin 5.
I would suggest you get a couple of plugs and just add some wire to each pin on one of them to test things. Hook the radio up to a dummy load and short pins 3 and 5- does the radio switch to transmit? open the sort and it should return to receive. (hopefully that is one thing solved
Now RX audio -connect a multimeter set for AC volts form pin 2 to pin 5. Open the squelch and see if the meter indicates audio -should be a low level ( AC millivolts) signal. this should verify the RX audio for the radio.
If those check out, the links above should let you finish the job.
Ebay also has vendors that make interfaces of this type for about 30-50 USD. IF you make your own remember to use isolation transformers in the audio paths -otherwise you are likely to run into problems with RF pickup and with the control signals getting into the audio.
Have fun
sorry i dont have any idea how to build that...
. Then find a radio tech in Austria.
. 73, n9zas
toastycookies
Member
obviously.
.?!
ecps92
Member
It helps to quote who you are replying to :roll:
i dont understand sorry.
Can someone emplane to me how does a Modem work?
I found no real good explanations on the Internet.
I found no real good explanations on the Internet.
nd5y
Member
In very simple terms, a modem is used to 'convert' the 1s and 0s a computer uses into something that can go over a radio channel. for simple protocols, two different audio tones are used, one for 1 and one for zero. On the receive side, a detector converts back to 1s and 0s. modem is short for modulator-demodulator.
Many digital modes (like packet) are an entire protocol all by themselves.
Also many software packages use the sound card of the computer to perform the modem function -that is audio form the radio is fed to the sound card which 'decodes' the tones. On transmit, the sound card is used to generate the tones which are then fed into the transmitter via the microphone input. Transmit/Receive is often handled via a serial port pin.
Hope this helps..
Many digital modes (like packet) are an entire protocol all by themselves.
Also many software packages use the sound card of the computer to perform the modem function -that is audio form the radio is fed to the sound card which 'decodes' the tones. On transmit, the sound card is used to generate the tones which are then fed into the transmitter via the microphone input. Transmit/Receive is often handled via a serial port pin.
Hope this helps..
So I will buy a Soundmodem soon.
How about that Company:
https://rigexpert.com/products/interfaces/ ?
How about that Company:
https://rigexpert.com/products/interfaces/ ?
ka3jjz
Wiki Admin Emeritus
That looks like it would work (there are others, of course, and if you had the skills, you can build your own) but first I would check to see if you can get a matching cable from RigExpert. Chances are no, since modems like these are really intended for ham radios, not CBs. But it won't hurt to try
Mike
Mike
the question whats different to SignaLink Model SL-1+ Sound Card - Radio Interface ?
ka3jjz
Wiki Admin Emeritus
It's the same kind of thing as the RigExpert, with additional controls and ports for connecting your radio. However it would appear - at least from the list of cables that's on that site - that you will need to do at least some wiring to connect the unit to your radio. I didn't see anything there that was Albrecht specific.
Really I think it's time you headed over to that European CB Federation website I posted in the other thread, joined their forums and asked some questions. You're going to get a lot more valuable information there, since it's Euro based; like I said earlier, modems like the RigExpert and SignaLink are really intended for the amateur radio market, not European CB. And you have been given more than enough information to build your own with a little effort. Perhaps someone can help build this for you?
Anyway, here's the link I mentioned earlier...
European CB Federation
Sometimes it's simply not worth the effort to try to force one application into another, and this might be one time where that's true...Mike
Really I think it's time you headed over to that European CB Federation website I posted in the other thread, joined their forums and asked some questions. You're going to get a lot more valuable information there, since it's Euro based; like I said earlier, modems like the RigExpert and SignaLink are really intended for the amateur radio market, not European CB. And you have been given more than enough information to build your own with a little effort. Perhaps someone can help build this for you?
Anyway, here's the link I mentioned earlier...
European CB Federation
Sometimes it's simply not worth the effort to try to force one application into another, and this might be one time where that's true...Mike
here I found an Image:
Can I order this Plug?
2 3 4 5 6 8 Pins Einbaubuchse Steckverbindung für Hohlstecker Buchse Stecker | eBay
There isnt any.
Europe is big and every country have there own laws.
Ok again and again and again a Sound Modem is not related to a frequency. Soundmodems are also used on Amateur Radio next to the CB Freq.
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