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.
| Specifications: |
|
| 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) |
|
