howto:xband
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howto:xband [2019/08/02 19:09] – [Crossband Repeater] ve7hzf | howto:xband [2020/10/01 21:35] – [Repeater Link] va7fi | ||
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* Where as a regular repeater always listens to the same frequency (the input of the repeater) and always transmits on the other (the output), a crossband repeater transmits on one frequency whatever it hears on the other, whichever it hears first. | * Where as a regular repeater always listens to the same frequency (the input of the repeater) and always transmits on the other (the output), a crossband repeater transmits on one frequency whatever it hears on the other, whichever it hears first. | ||
- | + | Many higher end dualband radios are capable of doing cross-band repeat (Icom' | |
- | Below are different uses for a crossband repeater. | + | |
===== Adhoc Repeater ===== | ===== Adhoc Repeater ===== | ||
- | 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. |
{{ : | {{ : | ||
* 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, | ||
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All that is needed to " | All that is needed to " | ||
+ | <WRAP center round important 90%> | ||
+ | One thing to keep in mind with crossband repeat is that the radio doing the repeating is transmitting every time someone transmits. | ||
+ | </ | ||
+ | |||
===== Repeater Extender Variation===== | ===== Repeater Extender Variation===== | ||
- | One thing to keep in mind with crossband repeat is that the radio doing the repeating is transmitting every time someone transmits. | + | 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 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 | + | * Unit A transmits on 446.100 |
* The crossband repeater hears 446.100 and re-transmits it on 147.**8**20 (the input of the repeater). | * The crossband repeater hears 446.100 and re-transmits it on 147.**8**20 (the input of the repeater). | ||
* The repeater hears 147.**8**20 and repeats it on 147.**2**20 (its output) | * The repeater hears 147.**8**20 and repeats it on 147.**2**20 (its output) | ||
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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. | ||
+ | |||
+ | <WRAP center round important 90%> | ||
+ | Here again, high transmit duty cycle can be an issue. | ||
+ | </ | ||
+ | |||
{{ : | {{ : | ||
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- | ===== Note ===== | + | |
- | The first draft of this page was copied over from [[https:// | + |
howto/xband.txt · Last modified: 2021/10/07 19:55 by va7fi