2m - 2 meter Transverter from DB6NT, Kuhne electronic

Quality made in Germany

TR 144-PRO 

Technical Specifications

RF range 144 ... 146 MHz IF range 28 ... 30 MHz IF input power 1 ... 50 mW / 60 ... 1000 µW switchable LO accuracy @ 18 °C typ. +/- 0.5 ppm (without ext. ref.) LO frequency stability (-5 ... +55 °C) typ. +/- 0.5 ppm (without ext. ref.) Output power 25 W IM3 of output signal typ. 36 dBc @ 20 W PEP RX gain typ. 25 dB Noise figure @ 18 °C typ. 1.3 dB, max. 1.5 dB RX output IP3 typ. +38 dBm IM-dynamic min. 102,5 dB SFDR @ 3 kHz BW Blocking min. -106 dBc @ 3 kHz BW Image rejection typ. 90 dB External reference input 10 MHz / 2 ... 10 mW (sine or square wave) Reference input connector BNC-female, 50 ohms PTT control Contact closure to ground Supply voltage +13.8 V DC (+12 ... 14 V DC) Current consumption typ. 6 A (TX) Case aluminium Dimensions (mm) 270 x 260 x 80 IF connectors / impedance BNC-female, 50 ohms (sep. / com. switchable) RF connectors / impedance N-female, 50 Ohm (separate RX/TX connectors) DC-supply and control connector SUB-D 9-pole

Features:

New features

• Status readout with an easy-to-read LCD-Display
• New Local-Oscillator with VCTCXO and +/- 0.5 ppm stability and  phasenoise better than -155 dBc/Hz @ 10 kHz
• Output from Local oscillator for a second converter or synchro receiver or predistortion downconverter on software defined radios
• Second independent IF Receiver port to connect a second receiver such as Spectrum readout, SDR receiver or a „sun and moon noise meter“
• Two equivalent HF-Antenna ports free configurable as receiver port  or transmit port or two independent antenna systems
• Monitored power amplifier with several protection circuits
• A lot of possibilities to configure the transverter for the most popular HF-transceivers
• Free configurable delay time of the internal sequence generator and open drain outputs for maximum flexibility
• Possibility to control the transverter with serial interface direct with PC (not RS232)
• Internal Blower now temperatur-controlled

Well-tried functions and features

• Input for external reference frequency for synchronizing to 10 MHz source and automatic changeover if an adequate power level is detected
• The internal antenna relay provide an Isolation of typical 70 dB
• Intermodulation >35 dBc @ 20 W PEP by new designed RF power amplifier with newest LDMOS technology
• Infinitely variable transmit gain adjustment on front panel
• Spurious rejection is better than 60 dBc, achieved by using an 5th order low pass
• Usable for all modes like SSB, PSK, FM and many more
• Low noise preamplifier with typical 0.9 dB NF and an OIP3 of about 40 dBm