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Updated SMA Antenna connector (markdown)

Erwin Ried 2023-04-21 12:27:10 +02:00
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SMA-Antenna-connector.md

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The antenna connectors on the HackRF board are the `18.5 mm` variant available here: https://s.click.aliexpress.com/e/_DEfOQ85
Notice that you _could _fit the `SMA-KE 18.5mm` variant, but it will be not the perfect fit for the type of pcb mount used in originally.
Notice that you _could_ fit the `SMA-KE 18.5mm` variant, but it will be not the perfect fit for the type of pcb mount used in originally.
![image](https://user-images.githubusercontent.com/1091420/233613253-7a1d1949-f2f6-4c1d-be40-eaa1fa750ba4.png)
# Replacing a broken connector
1. Desolder the original, use enough flux (i.e. [this "self cleaning" variant](https://s.click.aliexpress.com/e/_DEfOQ85)) and add solder. If there is parts of the SMA connector still there, it might be more difficult to remove because the thermal mass.
![image](https://user-images.githubusercontent.com/1091420/233613342-dfb284ee-b9ea-4851-8bed-b1313042632f.png)
2. Clean the pads
3. Place the new one. It will be very tight. Align it correctly
![image](https://user-images.githubusercontent.com/1091420/233613467-ce3a2e5b-7390-459d-939c-17e6cb0d34b4.png)
4. Solder and clean the residual flux
![image](https://user-images.githubusercontent.com/1091420/233613588-ca1efaf2-ab51-4c38-9fbb-e4e7f345765f.png)