product description
The MHP 200 S is a low-noise, large-signal mast preamplifier with transmit/receive switching. It is intended for use in medium and high power transmitting and receiving stations.
The heart of the MHP 200 S is an LNA 200. Around it there are the switching relays, the remote power supply and the direct power supply. The preamplifier input is protected with an amplitude limiter. The amplifier's input and output networks are sized so that both connections have an accurate 50 ohm impedance with very good S22 and S11.
In the amateur radio sector ICAS (Intermittent Commercial and Amateur Service) the transmittable power is 1000 W PEP. This must be reduced during continuous operation, e.g. through digital operating modes or radio telex. In these cases, depending on the duty cycle, the power can be reduced to 750 W when connected with a sequencer.
Attention: The amplifier must only be switched over without transmitting power! For this reason, the MHP 200 S must only be operated with a sequence control (e.g. Sequencer DCW 2004 B). Transmission operation without such a sequence control causes damage to the device!
| Technical data | MHP 200 S |
| Frequency range: | 144-146 MHz |
| Noise figure (20°C, NF): | 0,7 dB |
| Gain (+/-1%) (S21): | > 20 dB |
| Transferable power when using a sequencer: |
1000 W PEP |
| Insertion loss: | 0,18 dB |
| Return loss when transmitter is active: | 19 dB |
| Input return loss (S11): | > 21 dB |
| Output return loss (S22): | 18 dB |
| Output IP3: | 30 dBm |
| Input IP3: | 9 dBm |
| Supply voltage: | +13,8 V...15 V |
| Current consumption: | 170 mA |
| Mast diameter: | max. 58 mm |
| Weight: | 500 g |