# Cable loss

**URL:** <https://community.sparkfun.com/t/cable-loss/46408>\
**Category:** Wifi\
**Created:** [October 24, 2023, 6:35am UTC](https://community.sparkfun.com/t/cable-loss/46408 "2023-10-24T06:35:36Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![kossytom](https://avatars.discourse-cdn.com/v4/letter/k/f6c823/32.png) [@kossytom](https://community.sparkfun.com/u/kossytom)\
**Post date:** [October 24, 2023, 6:35am UTC](https://community.sparkfun.com/t/cable-loss/46408/1 "2023-10-24T06:35:36Z")

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Hello,

We are using WRL-18569 (RP-SMA to U.FL cable 150mm) for our products and I need the cable loss value of this cable.

Could you kindly provide me with this value ?

Best Regards,

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<div class="post-metadata">

**Author:** ![TS-Russell](https://yyz1.discourse-cdn.com/sparkfun/user_avatar/community.sparkfun.com/ts-russell/32/6092_2.png) [@TS-Russell](https://community.sparkfun.com/u/TS-Russell)\
**Post date:** [October 24, 2023, 10:46pm UTC](https://community.sparkfun.com/t/cable-loss/46408/2 "2023-10-24T22:46:54Z")

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That one doesn’t have a datasheet associated, but I found several comparable ones that list 50 ohms…probably best to determine with a multimeter

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<div class="post-metadata">

**Author:** ![n1ist](https://avatars.discourse-cdn.com/v4/letter/n/5daacb/32.png) [@n1ist](https://community.sparkfun.com/u/n1ist)\
**Post date:** [October 28, 2023, 2:10am UTC](https://community.sparkfun.com/t/cable-loss/46408/3 "2023-10-28T02:10:43Z")

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Unfortunately, neither cable loss nor impedance can be measured with a multimeter. I agree that it is a 50 ohm cable. [https://www.sparkfun.com/products/18154](https://www.sparkfun.com/products/18154) (a 100mm similar cable) lists -2dB of loss. Assuming of course that the cable doesn’t have gain, it really has 2dB of loss, so the 150mm would likely have 1.5 times the loss

/mike

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<div class="post-metadata">

**Author:** ![kossytom](https://avatars.discourse-cdn.com/v4/letter/k/f6c823/32.png) [@kossytom](https://community.sparkfun.com/u/kossytom)\
**Post date:** [October 30, 2023, 7:25am UTC](https://community.sparkfun.com/t/cable-loss/46408/4 "2023-10-30T07:25:30Z")

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Thank you very much for your replies.

I will take 3dB.

Best Regards,