This Duplex Hotspot comes with nice little stad for your office or home.
Built on a Pi 3 B
latest firmware from Pi-Star
This simplex and duplex systems all use an offset of 0, which is our duplex system. Regardless of simplex or duplex, the offset is 0.
We are using high-precision temperature compensated crystals, so it is 0
We use high cost TCXO crystal with extremely low bit error rate, offset of 0,
and frequency error of 0
The default bit error rate is less than 5%, and the default offset is 0. If the bit error rate is more than 5%, as long as the signal can be received, it can be corrected by offset.
Pi-star General Configuration for MMDVM_DUPLEX
Set Controller Mode: Duplex Repeater or Simple
Radio Frequency: Freq:144-148,219-225,(Main Band)420-475,842-950
Duplex Mode: Example:RX:438.000000 TX:433.000000
Duplex Mode: Example:RX:145.000000 TX:433.000000
Simple Mode: Example:RX:438.000000 TX:438.000000
Radio/Modem Type:STM32-DVM/MMDVM_HS-Raspberry pi Hat(GPIO) or any other (GPIO board)
option don't need now, some old board need set)
Admin->Expert->Edit MMDVMHOST->RXOFFSET=0 TXOFFSET=0 (default value in pistar)
(update:2019/2 new 3225 TCXO so offset is 0 )
This Duplex Hotspot comes with nice low profile stad for your office or home.
Shipping in less than 24 hours and 30 warranty Less shipping