222 Mhz Transvertor

Ukrainian 222 to 28MHz ASSEMBLED Highly Stable HD Transverter ham radio VHF UHF 8W 1.25m  

Purchased from XADO Ebay Store at the following link

These are my results of output while testing this transverter connected to an FT991. Do not exced 15 watts

222/21 or 28 MHz Assembled Transverter with High Dynamic Range and high frequency stability.

Ukrainian  222 Mhz Transvertor

Up for sale UR3LMZ ASSEMBLED transverter with highly stable frequency synthesizer. This allowed us to obtain a long-term stability of 0.2 ppm and to extend the operating range of the transverter 222 - 224 MHz  with your HF radio frequency 21 - 23 or 28 - 30 MHz. This model has 2 LO frequencies that can be easily switched using jumpers on the transverter board - 194 and 201 MHz. This allows you to use HF radio with frequencies 21 or 28 MHz. High frequency stability allows you to work in FM, SSB, CW and even digital modes FT8 JT65 and etc.

In this transverter model we have added an additional input for external frequency synchronization. If you need very high frequency stability, you can feed a highly stable 10 MHz frequency to a dedicated transverter input. In this case, the stability of the frequency of the transverter board will be determined by the stability of the external 10 MHz generator.

This transverter specially developed for severe conditions of reception - contests, DXing, the neighboring powerful broadcasting and amateur stations. The mixer is made on special HI-frequency ADE chip with whopping dynamic range IP3 + 17dBm typ. 

Transverter includes everything you need to use in conjunction with a HF transceiver with output power of 5-10 watts. Contains the input attenuator and the switch of the bypass on the HF antenna. In the bypass mode, the permissible power is 100 watts.

When turning the transverter power on, the HF antenna is turned off and the transverter output is connected. The PTT control of the transverter is automatic with RF power or or external forced closing to ground (switchable). Also, both modes can work simultaneously.

We are offering completely built and tested in UR3LMZ lab assembled transverter that comes with the English description which contains the circuit diagram of this transverter and diagram of how you can connect to your HF radio.

Technical sp

• • • •  RF range  -  222 ... 224 MHz

      •  IF range  -  21 or 28 MHz (switchable)

      •  IF input power  - 5-10W (15W max)

      •  LO frequency  -  194 or 201 MHz (switchable)

      •  LO frequency stability  -  +/- 0.2 ppm

      •  Output power  -  6 ... 8 W

      •  RX gain  -  typ. 20 dB

      •  Noise figure  -  typ. 1.0 dB

      •  Image rejection  -  typ. 70 dB

      •  PTT control  -  Contact closure to ground or automatically (switchable)

      •  Supply voltage  -  +13.8 V DC (+12 ... 14 V DC)

      •  Current consumption  -  typ. 2 A (TX)

      •  TX Output transistor  -  RD15HVF1

      •  RX Input chip - ADE

      •  Dynamic range IP3 + 17dBm typ.

      •  Dimensions (mm) - 90 x 170 x 45mm (3.55 х 6.7 x 1.6 in)

      •  RF sockets type - SO-239

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