Radioddity LPFX7 User manual

Radioddity LPFX7
User Manual
Radioddity LPFX7 Low Pass Filter is mainly used to suppress transmitter
harmonics during transmission and reception.
Introduction
1. When using with the PAX100, 100% suppression effect can be achieved.
2. When using with other radios or devices, 80-95% suppression effect can be
achieved.
3. Working Voltage: 13.8V | Working Current: 0.1-0.5A
4. Maximum Input Power: 100W for CW, 200W for SSB. If the maximum range is
exceeded, there will be an overload, which may damage the filter.
5. Frequency Range Support：10M、15M、20M、40M、80M
6. Harmonic suppression：
10M & 15M, 20M, and 40M＞30db
80M＞51db
Operation Guide
1. Connect the G90 to the PAX100 then to the LPFX7 and finally to an antenna.
2. Prepare the DC power supply: set the DC voltage to 13.8V output and the maximum
current to 20A.
Note: The power cord of LPFX7 can be directly connected to the power cord of G90. Pay
attention to the positive and negative poles.
3. Power on in the following order
Turn on the DC power supply then turn on G90 (the PAX100 will automatically power up)
then turn on LPFX7
4. Power and frequency setting
①Set the output power of G90 from 2 to 10 watts
②Set the G90 to the desired frequency
③Select the working band of LPFX7 according to the G90 frequency.
Note: It will damage the LPFX7 if the transmitting frequency/band of the radio and the

selected band on the LPFX7 are different.
LPFX7 frequency band setting reference:
For frequency of 10-15M, press 10-15M button, indicator LED will light up
For frequency of 20M, press 20M button, indicator LED will light up
For frequency of 40M, press 40M button, indicator LED will light up
For frequency of 80M, press 80M button, indicator LED will light up
④When finished with the above settings, press the G90 PTT button to transmit, the
PAX100 will and LPFX7 will automatically work.
⑤When done using LPFX7, press the power button to turn it off before disconnecting.
Included Items
Power Cable (A)
Input & Output Cable (B)

Connection Guide
1. Use Input cable (B) to connect PAX100 Output and LPFX7 Input
2. Use output cable (B) to connect LPFX7 Output to theAntenna
3. Connect Power Cable (A) with a DC 13.8V 1A power supply (or with G90’s power
supply)

Specifications
Frequency Range: 10M, 15M, 20M, 40M, 80M
Input Power: 100W CW, 200W SSB
Filter Structure: Elliptic filter
Filter Order: 7th order
Harmonic suppression: >30dB
Input & Output Connectors: SMA-K
Power supply voltage: 12V-16V
Working current: 100ma
Size: L150mm, W50mm, H20mm
Weight: 190G
Working temperature: -15℃～55℃
Storage temperature: -30℃～75℃