Метка: sdr
Preamp for mrfx1k80
Just to make sure that it’s working. It has around 0.4watt clean output. Should be a little more, will check transformer between
Continue working on SDR Box
Just photos: Arduino nano to convert BCD (Binary-coded decimal) codes for LPF to codes for BPF (they have different encoding for bands,
Concept of the box has changed :)
Now i think it’s better to insert all filters in box and not to insert TRX-DUO (or another SDR).
Homemade SDR Transceivers
Homemade SDR Transceivers based on demo or datasheet modules.
R.I.P. TRX-DUO
While i experimenting with i2c I killed something on this bus or i2c on FPGA itself…
Adding power/swr meter to the TRX-DUO transceiver — part.1 — code investigation.
Normally in Red Pitaya we can use analog inputs 0 and 1 for DC output from SWR bridge without any changes in software.
Unfortunately that pins are not connected to FPGA in TRX-DUO.
TRX-DUO based transceiver — pt.4 Software
As i don’t have any windows machines at now, looks like the best software for me (that is working on arm and intel macs) is linhpsdr.
TRX-DUO based transceiver — pt.3 Filling the case
Some pictures of boards in the case and a few words about power supply.
TRX-DUO based transceiver — pt.2 Filters and amplifier module
To get working device faster i decided to just buy prebuilt modules from 60dbmco.