ELAD SPF-08
User Manual - Rev 2 - 05/2021
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Using SPF-08 with the FDM-DUO SDR Transceiver
When SPF-08 board is connected with an ELAD FDM-DUO SDR Transceiver, the configuration is stored in
the FDM-DUO internal memory. At the startup, FDM-DUO senses the DB9 connector and if the SPF-08
board is found the transceiver automatically applies the stored configuration according to the tuning
frequency.
To save the desired configuration in the FDM-DUO memory, use the “FDM-DUO Manager” feature in the
ELAD FMD-SW2 SDR Software.
In the “SPF-08 Perselectros” panel set “YES” in the “Enable Presel SPF-08 Table” to enable the use of
preselector board.
The settings table is formed by 8 rows, one for each filter slot of the SPF-08 board.
Each row comprises 4 fields:
ID:
slot number from 1 to 8;
Enabled
: set “YES” to enable the selected filter;
High Pass Freq:
high pass frequency of the selected filter;
Low Pass Freq:
low pass frequency of the selected filter.
Press “Save” button to store the table in the FDM-DUO internal memory.
In the following figure is reported the configuration of a SPF-08 board with:
FBP40-1 filter module (Band Pass filter for 40 m band) mounted in slot number 3;
FHP05M-1 filter module (500 kHz High Pass filter) mounted in slot number 7;
FBPY module (bypass) mounted in slot number 8.