EQUIPMENT FOR 5,7 GHz BAND

 5,7 GHz transverter, Version 5 "Light", 1W output

  Project based on YO4HFU - Robert, 5,7 GHz, Version 5 transverter, 1W out

   https://www.qsl.net/yo4hfu/Transverter_5.7GHz_Portable.html

  project started 07.07.2025

transverter progress 10.07.2025
transverter progress 01.08.2025
transverter progress 03.08.2025
transverter progress 07.08.2025
transverter progress 10.09.2025
transverter progress 16.09.2025
transverter progress 25.09.2025 - ready for chip programming and final alignaments
be very careful when soldering MAX2871, pin 1 is marked with +
transverter progress 22.11.2025 - PLL at 6V - MAX locked, ADF locked, PLL level out 14,75 dB

the transverter has only 5V at Rx/Tx switching. To switch 12V relays, a MosFet power module switch must be added
LM2596 step-down module converter
RadioWaves SPD2-5.2NS-RD 2ft (0.6m) 5.25-5.85GHz, where the boom attachment system was restored

15.01.2026 - Transverter final alignaments
Bargraph with 4 LED's "on" at full 1W output power

Version 5 "Light" - project finished

5,7 GHz transverter, Version 2 "Mini", 175 mW output

New project based on YO4HFU - Robert, 5,7 GHz transverter, Version 2 "Mini"

https://www.qsl.net/yo4hfu/Transverter_5.7GHz.html

transverter progress 12.12.2025

PLL 5616 MHz - 2808MHz x 2

PLL 5616 MHz was made with ADF4351 module, PIC12F625 controlled for 2808 MHz

At 2808 MHz the level signal from ADF4351 module was -1.7 dB

40db RF amplifier module was used for passive doubler frequency module with HMC204 attack and another 20dB RF amplifier module for > 13dB level for mixer HMC219 from transerter

15,60 dB level at 5616 MHz very good for HCM219 mixer attack

Final measurements and adjustments

Version 5 "Mini" - project finished

Version 5 "Mini" - next step will add 5.8GHz WiFi booster - have 5W out and 15dB LNA

5GHz band test and first QSO at 10 Km distance 59++ both station

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