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Author Topic: Relay for antenna switching  (Read 3373 times)

mimu

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Relay for antenna switching
« on: August 08, 2024, 04:09:25 pm »
Hello, does anyone have suggestions for a suitable relay to switch the antenna input of the P275 using GPIO outputs? Thanks.
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Jan

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Re: Relay for antenna switching
« Reply #1 on: August 08, 2024, 05:54:40 pm »
I'm using this board https://pira.cz/show.asp?clanek=prepinac_anten_HMC253 from eBay
in this project https://pira.cz/monitor/

You can directly connect the alarm/gpio outputs to the board's pins A, B, C to switch up to 8 antennas  8)

Soon I will publish the new script files for the monitoring.
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mimu

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Re: Relay for antenna switching
« Reply #2 on: August 09, 2024, 04:35:27 pm »
Wow, great  :D
Can it also be powered via the alarm out? Is the power sufficient?
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Jan

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Re: Relay for antenna switching
« Reply #3 on: August 09, 2024, 04:58:55 pm »
Yes, exactly. I'm using it that way.
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