Bias-t voltage

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Bias-t voltage

Post by PD1ET » Fri Nov 09, 2018 10:24 am

The bias-T supplies a voltage of some 5v to connected equipment. I mainly use a mini-whip antenna and that does not work at 5v -not properly anyway. A voltage of 9 to 12 v would be more usefull...
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Re: Bias-t voltage

Post by DanubeBCL » Fri Nov 09, 2018 4:33 pm

PD1ET wrote:A voltage of 9 to 12 v would be more usefull...
And certainly more difficult and costly to be generated from a 5 V USB voltage.
73, Heinrich

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Re: Bias-t voltage

Post by SDRnerd » Wed Nov 14, 2018 12:03 pm

There are miniwhip designs with low voltage operation. Beware that the current limit is only 45 mA on the bias-T!

73' Ron

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Re: Bias-t voltage

Post by g1hbe » Wed Nov 14, 2018 12:34 pm

Ron, isn't the max current 100mA?

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Re: Bias-t voltage

Post by Tech_Support » Wed Nov 14, 2018 3:51 pm

Hello folks,
Yes it is 100mA.



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Re: Bias-t voltage

Post by vk3alb » Wed Nov 14, 2018 8:22 pm

I think the reason for the 5V bias voltage is understandable.

As someone mentioned there are lower voltage circuits of the mini-whip

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