ZUM Radio MMDVM-Pi User Manual page 5

Elite 3.5 LCD ZUMspot kit user guide
Here are some signal images captured on an Oscilloscope
RX-(JP7)
Noise without signal (JP7)
JUMPER DESCRIPTION TABLE
Bypass Pad ON
J1 X
J1
J2 X
J2
J7 X
J7
LED Description Table
Copyright 2019-2022 ZUM Radio, Inc
OFF
Disable DC blocking capacitor on Radio RX end
X Enable DC blocking capacitor on Radio RX end
Bypass 10K variable resistor
X Enable 10K variable resistor
Disable DC blocking capacitor on Radio TX end
X Enable DC blocking capacitor on Radio TX end
LED NAME
PTT
COS
STAT
NXDN
POCSAG
D*
DMR
P25
YSF
PWR
5
TX-(JP6)
Description
Description
Board is transmitting
Board is receiving
Status
NXDN Enabled
POCSAG Enabled
D-Star Enabled
DMR Enabled
P25 Enabled
YSF Enabled
Board is receiving power
Rev 1.0