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HF/50MHz TRANSCEIVER | Transmission unit /cooling |
Transmitter performance, featuring
can withstand long periods of operation at full power.
Operating stably even when continually working over long periods of time, such as in competitions.
The
Transmit
It is outfitted with four antenna terminals, which can be set independently on amateur bands, whether main band or sub band. The reception input and output terminals can be used for reception dedicated antennas, antenna output for external reception devices, and external BPF connections. It is usable with either the main band or the sub band.
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1 | 2 | 3 | 4 |
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| MAIN BAND |
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| MAIN |
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| ANT Selector |
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| MAIN RX ANT | BAND |
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| RX | OFF | RECEIVER |
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| AT |
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| TX | SUB RX ANT | SUB | |
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| SUB BAND |
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| OFF | BAND |
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| RECEIVER | |
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| ANT Selector |
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| Transmission Unit |
High reliability design promises stable operation at 200W
Cooling system to send a sufficient volume of air to each unit
The device uses POWER MOSFET VRF150MP, which runs at 50V, with
3rd order TX IMD 14.2MHz / 200W |
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10 dB / div | SPAN 10 kHz |
FET attributes. Further, you can realize Kenwood’s distinctive tone by amplifying the clean modulated signal produced by DSP with an amplifier that ex- hibits excellent linearity.
Cooling is very important to obtain a stable output of 200 W. Heat dissipation efficiency is increased in the
Thermal simulation example
To dissipate the heat of the 200 W final, we used swage fins instead of the conventional extruded aluminum fins. Using CAE analysis we designed the optimal fin shape and size for heat dissipation.
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