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--- projects:rfid:start [2024/10/22 11:25] – [Table] hoi-fung.sam
+++ projects:rfid:start [2024/10/23 14:16] (current) – [Chafon Products] hoi-fung.sam
@@ Line 22: / Line 22: @@
 | [[https://www.chafontech.com/productinfo/1069318.html|CF661 Prime UHF 6dbi integrated reader]]          | 200 tags per sec  | USD80   | {{projects:rfid:cf661_en.pdf\\ }}      |
-The main difference between CF811 and CF816 is that CF816 is made by impinj E710 chip, so it can read more tags per second and more reading sensitivity than CF811. \\
+My suggestion is to buy **CF816** Fixed reader. **CF816** and **CF811** are basically the same, the main difference is that **CF816** is using impinj E710 chip, which is more sensitive in reading and has a higher reading speed. **CF816** also has more API commands than **CF811**.\\
+**CF800** is also using impinj E710 chip and has Android operating system additionally, which I think is not necessary to us. The API of the **CF816** and **CF800** are the same.
+And buying two to four **CF-RA8080** UHF RFID ceramic antennas to use with the Fixed reader, The gate size of the chicken house is around 30cm height and 27cm width. The ceramic has a size of 80*80*5mm, with circular polarization, its reading angle is 60 degrees forward. So it is possible to cover the gate size. But we can also go for a PCB antenna. For PCB antennas, I suggest **CF-RA5005** UHF 5dBi Counter Antenna, also with circular polarization (120*120*6.5mm).
+{{projects:rfid:antennas.jpeg?200}}\\
+Fig.1 CF-RA8080 (Left) CF-RA5005 (Right)
+**CF-RA6005** UHF Narrow Angle Beam Antenna fits the gate width perfectly, but it is not waterproof.
+And two **CF661** integrated readers, with a read range 0-6 meters. Prime reader and Fast reader are using the same SDK.