It's a complete downconverter for the VHF-UHF bands, covering from about 90 Mhz up to 500 Mhz. The board can be added to the PMSDR as an option, extending the frequency range up to 500 Mhz. There are two preselection filters, for VHF and UHF bands, but it's also possible to exclude these filters in order to use external filters. A particular feature of this downconverter is the digitally tunable LO, from 10 up to 810 MHz; this allows use of a wide range of IF frequencies. Furthermore, the downconverter has also a build-in automatic T/R antenna switch, which permits use of a transceiver on the same antenna as the PMSDR (see Switchboard).
Furthermore, the downconverter has also a build-in automatic T/R antenna switch, which permits to use a transceiver on the same antenna with the PMSDR (see Switchboard).
Normally the antenna is connected to the PMSDR input. When the unit senses RF power on RTX, the antenna is connected to the RTX input. Three operating modes are available: passive, manual and automatic mode. When the PMSDR is not powered, the transceiver is connected to the antenna to avoid damage to the transceiver.
No external power required - low power cosumption design
Build-in antenna switch (Switchboard)
Passthrough for Broadband input (to use with external filters)
Wide range tunable VHF-filter (90 - 160 MHz)
Tunable UHF-filter (420 - 460 MHz)
Tunable LO (from 10 to 810MHz)