product description
The SP 70 S is a selective receiving preamplifier with transmit / receive switching for the 70 cm amateur band. It offers optimal amplification, low noise figure and good large-signal behavior. With low transmit powers, the transmit / receive switchover can be implemented using a built-in VOX circuit. This amplifier is built with a GaAs MMIC of the latest technology on a high quality microwave substrate in SMD technology. The band pass at the output of the amplifier ensures a good band selection so that all signals that are outside the useful band are effectively suppressed. This amplifier has a, splash-proof, UV-resistant plastic housing and galvanized mast clamps with stainless steel screws for attachment to the antenna mast.
| Technical data | SP 70 S |
| Frequency range: | 430-440 MHz |
| Noise figure (20°C, NF): | 1,0 dB |
| Gain (+/-1%) (S21): | 25 dB |
| Max. switching capacity with RF VOX: | 100 W |
| Transferable power when using a sequencer: | 500 W PEP 250 W CW, FM, WSJT |
| Insertion loss: | 0,25 dB |
| Return loss when transmitter is active: | 40 dB |
| Input return loss (S11): | 27 dB |
| Output return loss (S22): | 20 dB |
| Output IP3: | 19 dBm |
| Input IP3: | -6 dBm |
| Supply voltage: | 12V...15V |
| Current consumption: | 160...190 mA |
| Mast diameter: | max. 58 mm |
| Weight: | 540 g |