432/21 or 28 MHz Assembled Transverter with High Dynamic Range and high frequency stability.

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 425 - 442 MHz  with your HF radio frequency 21 - 32 MHz. This model has 2 LO frequencies that can be easily switched using jumpers on the transverter board - 404 and 410 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 specifications

•  RF range  -  425 ... 442 MHz
•  IF range  -  21 or 28 MHz (switchable)
•  IF input power  - 5 - 10W (15W max)
•  LO frequency  -  404 or 410 MHz (switchable)
•  LO frequency stability  -  +/- 0.2 ppm
•  Output power  -  3.5 ... 5 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

We ship Worldwide by Airmail with trucking.

Typical shipping time:

EUROPE 2 weeks

USA, Canada 3 weeks

Africa, South America, Asia, Australia 4-6 weeks. 

Note!

Please understand that the package maybe delayed due to reasons outside of our control, like weather, holidays or shipping errors. We appreciate your patience but if you have not received package in the time stated above, please feel free to contact us through eBay message. We will try our best to solve the problem for you.