144+432/28 MHz High Dynamic Dualband Transverter to ANY HF radiowith high frequency stability and extended band.
UR3LMZ dualband transverter for Any HF radio with 28MHz band.
We have installed a highly stable frequency synthesizer in this model. High frequency stability allows you to work in FM, SSB, CW and even FT8 PSK digital modes. This allowed us to obtain a long-term stability of 0.2 ppm and to extend the operating range of the transverter 144 – 150 MHz and 432 – 438 MHz with your HF radio frequency 28 – 32 MHz.
It is 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. We made some improvements, improved the circuit, and now the transverter has an output power of 12 watts on VHF and 3.5 watts on UHF.
We specially designed this transverter for easy connection to Any HF radio. You only need a couple of cables to connect to your radio and you can work on VHF/UHF with all kinds of modulation. 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. Due to the automatic switching mode of the attenuator when the RF is applied, even a power of 100 watts, randomly applied to the input, will not be dangerous. Then only set the optimal power of 5-10 watts, and that’s it. For SSB, the transmission is held in speech pauses, and the TX to RX after the HF removal is about 0.5 sec.
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 | 144 … 150 and 432 … 438 MHz |
| IF range | 28 … 32 MHz |
| IF input power | 5-10 W |
| LO frequency 144Mhz | 116 MHz and 118 MHz to push F+ |
| LO frequency 432Mhz | 404 MHz and 406 MHz to push F+ |
| LO frequency stability | +/- 0.2 ppm |
| Output power | 12 W on 144 and 3.5 W on 432 |
| RX gain | typ. 20 dB |
| Noise figure | typ. 1.0 dB on 144 and typ 1.5 dB on 432 |
| Image rejection | typ. 70 dB |
| PTT control | automatically |
| Supply voltage | +13.8 V DC (+12 … 14 V DC) |
| Current consumption | typ. 3 A (TX) |
| TX Output transistor | RD15HVF1 |
| RX Input chip | ADE |
| Dynamic range IP3 + 17dBm typ. | |
| Dimensions (mm) | 90 x 120 x 45mm (3.55 х 4.75 x 1.6 in) |
| RF sockets type | BNC |
If you were
not satisfied with the transverter then you ship it back and we refund
your money.
