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TX-SP25 25W paging Amplifier

A low cost RF amplifier that can be connected to a standard SitePage pocsag paging controller to boost the RF power output up to 25W.

The SP25AMP has a switching bandwidth of 5MHz with 20Watts minimum output. The power sense operates with a minimum of 3Watts input and switches both the power and aerial relays. It will operate satisfactorily with down to 400mW drive, but the PTT connection must be grounded to operate the receive and transmit changeover. A 2dB 50 Ohm input matching pad allows connection to a wide range of devices, and provides high tolerance to mis-tuning without the risk of instability.

In the receive mode, the SP25AMP will pass a receive signal with less than 1dB attenuation. The three stage aerial filter attenuates all spurious emissions to less than -30dBm. The SP25AMP is protected against accidental power connection reversal.

Frequency VHF 146~170 Mhz, UHF 440~470 MHz
Power Output 25 typical with 4W input (0.4W min for 10W output)
Power Requirement 13.8VDC, 4A typical (5A at 25W output)
Duty Cycle 50% at 25W output
Stability 2dB 50ohm input
Spurious Outputs -30 max
Frequency Stability 2.5 ppm
RF Connectors BNC
Current Consumption Standby: 100mA; TX(5W) < 2A; TX(1W) < 1A
Dimension 140 (L) x 105 (W) x 33 (H) mm
Weight Approximately 500g (without Antenna)