Products
UHF Power Amplifier - 25 Watt (11-99-0000)
The 11-99 power amplifier has two variants to cover the UHF frequency bands.
Model 11-99-1000 covers 400-440MHz & model 11-99-2000 covers 450-500MHz
With 4-5 watts input both are designed to deliver 25 Watts output.
Both cover the full switching bandwidth without retuning with 20 Watts minimum output.
The 11-99 is protected against accidental power connection reversal.
The 11-99 power amplifier has two variants to cover the UHF frequency bands. 11-99-1000 covers 400-440MHz & 11-99-2000 covers 450-500MHz and with 4-5 watts input both are designed to deliver 25 Watts output. Both cover the full switching bandwidth without retuning with 20 Watts minimum output.
The power sense operates with a minimum of 1 watt input and switches both the power and aerial relays. The 11-99 will operate satisfactorily with down to 1W input power and will give approximately 10 Watts out.
A 2dB 50 Ohm input matching pad allows for connection to a wide range of driving devices without the risk of instability.
In the receive mode it will pass a receive signal with less than 2dB attenuation. The high pass filter is in circuit in the receive mode.
The 3 stage aerial filter attenuates spurious emissions to less than -30dBm.
The 11-99 is protected against accidental power connection reversal.
The green Power LED operates at all times with power connected and the red Transmit LED operates only when the 11-99 is switched to the transmit mode (PTT activated).
| Frequency Range | 400-440MHz - UHF (Model No. 11-99-1000) 450-500MHz - UHF (Model No. 11-99-2000) |
| Frequency Selection | Factory preset |
| Power Supply | +13.8V typical (11 to 15 VDC range) |
| Power Consumption | Standby: 4mA Normal Operation: 4.5A Maximum: 6A @ 25W output |
| Transmit Power | 25W @ 4W input; 18W @ 2W Input; 10W @ 1W Input approx |
| Transmit Duty Cycle | 50% at 25 Watts; Maximum 1 minutes on time |
| Switching Bandwidth | 50MHz, 20 Watts minimum with 4 Watts input |
| Transmit Enable | Power sense circuit operates relay (1W min) |
| Receive Mode | 50MHz, 20 Watts minimum with 4 Watts input |
| Power Connector | 2-way plug & socket, screw connections (supplied) |
| RF Connector | 50 Ohm BNC (both Input and Output) |
| Environmental Protection | Not suitable for outdoor use and should be protected from adverse environmental conditions |
| Operating Temperature | -10ºC to +60ºC (+14ºF to +140ºF) |
| Indicators | Power LED (Green) - Solid On = Normal Operation Status LED (Red) - Solid On = Active Signal Present |
| Weight | 400g |
| Enclosure Dimensions | 100mm x 130mm x 30mm (WxDxH) |
| Enclosure Material | Extruded Aluminium |
| Colour | Matt Black |
| Type Approvals | AS 4295: 1995 (RF |
The 11-99 power amplifier has two variants to cover the UHF frequency bands. 11-99-1000 covers 400-440MHz & 11-99-2000 covers 450-500MHz and with 4-5 watts input both are designed to deliver 25 Watts output. Both cover the full switching bandwidth without retuning with 20 Watts minimum output.
The power sense operates with a minimum of 1 watt input and switches both the power and aerial relays. The 11-99 will operate satisfactorily with down to 1W input power and will give approximately 10 Watts out.
A 2dB 50 Ohm input matching pad allows for connection to a wide range of driving devices without the risk of instability.
In the receive mode it will pass a receive signal with less than 2dB attenuation. The high pass filter is in circuit in the receive mode.
The 3 stage aerial filter attenuates spurious emissions to less than -30dBm.
The 11-99 is protected against accidental power connection reversal.
The green Power LED operates at all times with power connected and the red Transmit LED operates only when the 11-99 is switched to the transmit mode (PTT activated).
| Frequency Range | 400-440MHz - UHF (Model No. 11-99-1000) 450-500MHz - UHF (Model No. 11-99-2000) |
| Frequency Selection | Factory preset |
| Power Supply | +13.8V typical (11 to 15 VDC range) |
| Power Consumption | Standby: 4mA Normal Operation: 4.5A Maximum: 6A @ 25W output |
| Transmit Power | 25W @ 4W input; 18W @ 2W Input; 10W @ 1W Input approx |
| Transmit Duty Cycle | 50% at 25 Watts; Maximum 1 minutes on time |
| Switching Bandwidth | 50MHz, 20 Watts minimum with 4 Watts input |
| Transmit Enable | Power sense circuit operates relay (1W min) |
| Receive Mode | 50MHz, 20 Watts minimum with 4 Watts input |
| Power Connector | 2-way plug & socket, screw connections (supplied) |
| RF Connector | 50 Ohm BNC (both Input and Output) |
| Environmental Protection | Not suitable for outdoor use and should be protected from adverse environmental conditions |
| Operating Temperature | -10ºC to +60ºC (+14ºF to +140ºF) |
| Indicators | Power LED (Green) - Solid On = Normal Operation Status LED (Red) - Solid On = Active Signal Present |
| Weight | 400g |
| Enclosure Dimensions | 100mm x 130mm x 30mm (WxDxH) |
| Enclosure Material | Extruded Aluminium |
| Colour | Matt Black |
| Type Approvals | AS 4295: 1995 (RF |
