Description:
1. Radio frequency: Freq: 144-148, 219-225, (main frequency band) 420-475, 842-950
2. Duplex mode: Example: RX: 438.000000 TX: 433.000000
3. Duplex mode: Example: RX: 145.000000 TX: 433.000000
4. Simple mode: Example: RX: 438.000000 TX: 438.000000
5. Radio/Modem Type: STM32-DVM/MMDVM_HS- Hat(GPIO) or any other (GPIO board)
6. Options: (not needed now, some old boards need to be set)
7. Admin→Expert→Edit MMDVMHOST→RXOFFSET=0 TXOFFSET=0 (default value in pistar)
8. (Update: 2019/2 new 3225 TCXO so offset is 0)
9. Update new firmware: (pi-star / Expert / ssh access / user : pi-star pass: raspberry)
10. sudo pistar-mmdvmhshatflash hs_dual_hat
11. The default bit error rate is less than 5%, and the default offset is 0. If the bit error rate is 5%, as long as the signal can be received, it can be corrected through offset.
Note:
Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Not Affect The Use
size: about 65 x 31 x 15mm
Material: Aluminum PCB
colour: As Shown
Package Contents:
1 x Hotspot Board Kit (With Case And Screen)
2 x Pin Header Socket
1 x Oled Box
Only the above package content, other products are not included.
Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.
