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Метка: sdr

03.08.202321.08.2023 enthru hamradio amplifiers, hf, sdr

SDR box — finally it fits into the case

27.07.202330.08.2023 enthru hamradio amplifiers, hf, sdr, trx-duo

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

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15.07.202321.08.2023 enthru hamradio amplifiers, hf, sdr

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,

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26.05.202328.05.2023 enthru hamradio amplifiers, sdr

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).

09.05.202309.05.2023 enthru hamradio hf, sdr

Homemade SDR Transceivers

Homemade SDR Transceivers based on demo or datasheet modules.

06.05.202319.05.2023 enthru hamradio sdr, trx-duo

R.I.P. TRX-DUO

While i experimenting with i2c I killed something on this bus or i2c on FPGA itself…

04.05.202306.05.2023 enthru hamradio sdr, trx-duo

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.

02.05.202315.05.2023 enthru hamradio sdr, trx-duoДобавить комментарий к TRX-DUO based transceiver — pt.4 Software

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.

02.05.202304.05.2023 enthru hamradio sdr, trx-duoДобавить комментарий к TRX-DUO based transceiver — pt.3 Filling the case

TRX-DUO based transceiver — pt.3 Filling the case

Some pictures of boards in the case and a few words about power supply.

02.05.202319.05.2023 enthru hamradio sdr, trx-duoДобавить комментарий к TRX-DUO based transceiver — pt.2 Filters and amplifier module

TRX-DUO based transceiver — pt.2 Filters and amplifier module

To get working device faster i decided to just buy prebuilt modules from 60dbmco.

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