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update README
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llatva committed Nov 8, 2024
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# TACNPR project 'Neppari'
# TACNPR project ('Neppari')

NPR (New Packet Radio protocol) compatible Ethernet-connected radio w/ integrated RF PA. Revision B brought integrated Ethernet and revision C some RF performance enhancements (see modifications guidance for revA & revB below).
NPR-compatible (New Packet Radio) Ethernet-connected radio w/ integrated RF PA for the 70cm HAM band.
TACNPR is binary-compatible with the original design /1/ by Guillaume F4HDK.

Designed by Lasse OH3HZB & Tatu OH2EAT & Scoms team (special thanks to Mikko OH2FLO, Vili OH5GE and Tommi OH1GJV (TACBUCK design))

![3D](TACNPR-revC-3D-top.jpg)
![photo](TACNPR-revD-photo.jpg)

![photo](TACNPR-revB-photo.jpg)
Licensed under the TAPR Open Hardware License www.tapr.org/OHL

Licensed under the TAPR Open Hardware License
www.tapr.org/OHL

Please note that you need to be licensed HAM radio operator to use this radio.
Please note that you need to be licensed HAM radio operator to use this radio. Remember to check your local regulations.

### Modifications for revA and revB to optimize RF performance

Expand All @@ -21,10 +18,28 @@ Please note that you need to be licensed HAM radio operator to use this radio.
* C65 and C102: replace by 6p8
* C100: replace by 8p2

The tuning stub should be shorted according to the latest revC layout.
The tuning stub in revA/revB should be shorted according to the revC/revD layout.

### Project milestones and current status

* RevA: First version with Ethernet add-on module.
* RevB: Integrated Ethernet.
* RevC: RF performance enhancements (see the previous chapter).
* RevD: Powerpole connector option added.

RevC and RevD are tested and fully functional. RevA & RevB require tuning (stub) and modifications mentioned above.

### Recommended TX power setting for maximum power with this PA module

set RF_power 55

/1/: NPR by Guillaume F4HDK (2018-): https://hackaday.io/project/164092-npr-new-packet-radio

### Disclaimer

This device is provided as-is and is to be used at your own risk. The authors take no responsibility for any direct, indirect, incidental, or consequential
damage that may arise from its use, including but not limited to damage to property, loss of data, or personal injury. Users are solely responsible for
ensuring safe operation and adherence to all relevant laws and regulations.

For the license terms, please refer to LICENSE file or http://www.tapr.org/OHL

Binary file added TACNPR-revD-photo.jpg
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