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Author Topic: Cross band repeaters  (Read 1027 times)

KG9ZTX

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Cross band repeaters
« on: December 04, 2018, 09:39:35 PM »

I have the kenwood v71 and V710 units. Not with cross band capabilities.

Just want to make sure I understand usage correctly. So please correct me if I am wrong.

When it is setup for cross band for VHF to UHF. Then it will receive a signal from VHF side and retransmits it on the UHF side. And a signal received on the UHF side will be transmitted back on the VHF frequency. Only two frequencies are used, one on VHF side and One on UHF side.
Each frequency is operating in simplex mode even though the whole radio operates on duplex.
One antenna works because of  frequency  Separation being large.

So if that’s the case... either side would be unable to connect to a normal dual frequency repeater with offsets?

The advantage of a cross band repeater would be to have it setup in your location, and use a handheld with a lower power setting, on the opposite cross and that u want to communicate with.

Example:
Your handheld communicates with your mobile/base crossband on UHF at lower power and communicates with your group on the vhf band with higher power. Therefore allowing you longer batter life and or greater distance capabilities?

Am I missing anything?
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NA4IT

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RE: Cross band repeaters
« Reply #1 on: December 05, 2018, 03:27:26 AM »

Yes, you can cross band from a simplex frequency in one band to a repeater frequency in another band. However, you will have to wait until the repeater complete drops the signal before you can transmit again.

A better way if possible is if you can hear the repeater on your HT, set the cross band up as a "range extender". I.E. listen to the repeater on your HT and set up the TX frequency into the repeater.

Some HTs can do it, some won't. As bad as everyone hates the Baofengs, they will do that.
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