howto:xband
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howto:xband [2021/07/08 13:27] – [KT-8900] va7fi | howto:xband [2021/07/09 20:54] – va7fi | ||
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Supposing you are in a remote location with no repeater and you have a few people who need to communicate with handheld radios. | Supposing you are in a remote location with no repeater and you have a few people who need to communicate with handheld radios. | ||
- | {{ :howto: | + | {{ howto:xband: |
* Both handhelds are set to listen to 446.100 and transmit on 145.565 so that when Unit A transmits on 145.565, | * Both handhelds are set to listen to 446.100 and transmit on 145.565 so that when Unit A transmits on 145.565, | ||
* The crossband repeater hears the 145.565 signal and re-transmits it on 446.100 | * The crossband repeater hears the 145.565 signal and re-transmits it on 446.100 | ||
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There' | There' | ||
- | {{ :howto: | + | {{ howto:xband: |
* Here, each handheld uses a different band so there is no need for fancy dual band tx/rx. | * Here, each handheld uses a different band so there is no need for fancy dual band tx/rx. | ||
* The problem is that you can't add more handhelds (unless they can already hear the others in simplex). | * The problem is that you can't add more handhelds (unless they can already hear the others in simplex). | ||
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This is a scheme I use often at home with my base station in crossband mode: I tune one receiver to our local repeater, and the other to a simplex UHF frequency. | This is a scheme I use often at home with my base station in crossband mode: I tune one receiver to our local repeater, and the other to a simplex UHF frequency. | ||
- | {{ :howto: | + | {{ howto:xband: |
* Unit A transmits and receives on 446.100 (with a tone). | * Unit A transmits and receives on 446.100 (with a tone). | ||
* The crossband repeater hears 446.100 (with a tone squelch) and re-transmits it on 147.**8**20 (the input of the repeater). | * The crossband repeater hears 446.100 (with a tone squelch) and re-transmits it on 147.**8**20 (the input of the repeater). | ||
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The following is a variation I use when I can hear the repeater with my handheld, but can't transmit to it because of the handheld' | The following is a variation I use when I can hear the repeater with my handheld, but can't transmit to it because of the handheld' | ||
- | {{ :howto: | + | {{ howto:xband: |
The crossband repeater is set up with the input frequency of the repeater without the offset. | The crossband repeater is set up with the input frequency of the repeater without the offset. | ||
* Unit A transmits on 446.100 and receives the repeater' | * Unit A transmits on 446.100 and receives the repeater' | ||
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A crossband repeater can be used to link a VHF and UHF repeater simply by dialing both repeater frequencies (with offset and tones) on the crossband repeater. | A crossband repeater can be used to link a VHF and UHF repeater simply by dialing both repeater frequencies (with offset and tones) on the crossband repeater. | ||
- | {{ :howto: | + | {{ howto:xband:xband3.png |}} |
<WRAP center round important 90%> | <WRAP center round important 90%> | ||
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To reach Unit A, Unit C would need to " | To reach Unit A, Unit C would need to " | ||
- | {{ :howto: | + | {{ howto:xband: |
===== KT-8900 ===== | ===== KT-8900 ===== | ||
It's pretty easy to setup a cross band repeater with two KT-8900 radios. | It's pretty easy to setup a cross band repeater with two KT-8900 radios. | ||
- | {{ | + | {{ howto:xband: |
- | * The first step is to make an ethernet patch cord with this {{:howto: | + | * The first step is to make an ethernet patch cord with this {{howto:xband: |
<WRAP indent> | <WRAP indent> | ||
|1 (Data Input) | < | |1 (Data Input) | < | ||
Line 98: | Line 98: | ||
|8 (AF OUT) | |8 (AF OUT) | ||
</ | </ | ||
- | * The second step is to set the menu option 43: '' | + | * The second step is to set the menu option 43: '' |
* For my setup: | * For my setup: | ||
* I set the UHF radio to low power because it's ether going to be used on a UHF simplex frequency when I'm around the house, or by VE7SCK, which is also really close. | * I set the UHF radio to low power because it's ether going to be used on a UHF simplex frequency when I'm around the house, or by VE7SCK, which is also really close. | ||
* I set the VHF radio to high power because this radio would need to reach a repeater further away. It will also only transmit when I'm speaking on the UHF simplex frequency or when someone is using VE7SCK, which is less often. | * I set the VHF radio to high power because this radio would need to reach a repeater further away. It will also only transmit when I'm speaking on the UHF simplex frequency or when someone is using VE7SCK, which is less often. | ||
* Once both radios are on their correct frequencies (one must be on UHF and the other on VHF), connect the cable to link them both. | * Once both radios are on their correct frequencies (one must be on UHF and the other on VHF), connect the cable to link them both. |
howto/xband.txt · Last modified: 2021/10/07 19:55 by va7fi