In TX mode the signal from the microphone (in SSB mode), from the CW tone generator (in CW mode), or from line-in connector (in FT8 mode), is amplified by the feedback audio amplifier, Q6 and Q7. Further, the modulation signal goes to the DSB (Double Side Band) modulator, made with TR3 transformer and two BAT54 Schottky diodes.

The TRX is able to run digital modes and the capability to contact Amateur radio using FT8, FT4, JT65, WSPR and RTTY (Some other modes should be tested). This not a DSB transceiver but a sideband TRX (USB for instance).

2022年4月26日 · The TRX is able to run digital modes and the capability to contact Amateur radio using FT8, FT4, JT65, WSPR and RTTY (Some other modes should be tested). This not a DSB transceiver but a sideband TRX (USB for instance).

2023年9月24日 · DL2MAN posted a video with detailed instructions for setting up the (tr)uSDX for FT8 using WSJT-X. Since the (tr)uSDX supports CAT control through it’s USB connector and …

2021年9月26日 · And it’s for this mode that [Charles Hill] has created an easy-to-build transceiver. Its brains are aTeensy 3.6, while the receive side is a Si4735 receiver chip and the transmitter is a Si5351...

2019年3月24日 · Adam Rong BD6CR has designed a simple DSB Transceiver for FT8. Crystals are available for 7.074 MHz. and 14.070 MHz (which can be “pulled” with a trimmer to 14.074 MHz). Using only 4 Transistors, 2 IC’s, 3 Toroids, 5 Diodes/LED’s and a handful of resistors and capacitors this one watt wonder will get you on the air in no time. Click to enlarge.

This SDR is a prototype hardware platform to assist in developing a low-cost transceiver for digital modes (FT8, JSTcall, WSPR, CW, etc) that do not require linear amplification like SSB.

This project implements a standalone multiband FT8 transceiver with all the FT8 signal processing done by Red Pitaya in the following way: simultaneously record FT8 signals from eight bands

Accurate clock generator (Si5351 ?)

PY2OHH - MIG Miguel Angelo Bartié NEW ... PAGE 3 WELCOME ! Today (26/dec 2024) : These days I am making a simple 12m FT8 trx PY2OHH interview in SWIAT RADIO (polish magazine) última (last) MOD 13/feb/22 µSDX KIT MUTIRAO Passo a Passo TRX=>223 02/jun/22 MEU USDX Monte o SEU MY USDX build your OWN TRX=>224 08/aug/22 USDX DUAL BAND TRX=>225 08/aug/22 adapter SSOP fst3253 to DIP 64HC4053=>226 ...