Italab Power Amplifier Modules

ITB from Italy manufactures power amplifier modules, using state of the art

48V MRF6… transistors by Freescale. These transistores make it very easy to have a linear amplifier at very high amplification levels. The efficiency of the modules is typically around 70%. The modules come preassembled and don't require alignment. They are built on Teflon PCB, mounted on solid 5mm copper heat sinks.

Some modules have a directional coupler and/or a SWR bridge installed. The construction of the transistors and the entire modules is very robust. Some of the modules would withstand a SWR of up to 65:1, given enough cooling. This enables you to construct a power amplifier which are easy to use, without any tuning.

All PA modules must be installed on a large, actively cooled heat sink for operation. The operating temperature must not exceed 40°C at 25°C ambient temperature. For best heat coupling the copper base (5 to 5.5mm thick) is precision milled. The ready to use 'Box' models come installed on a large heat sink. To build a fully useable amplifier further items like HF switching, power supply, fans, protection circuitry, maybe a low pass and a case are required.

The modules are covered by the usual warranty by the manufacturer, except for the transistors. The modules require a power supply of 44 to 48V DC, at an consumption of up to 30A, depending on model. WiMo offers a suitable power supply.

144 MHZ PA module

Super compact final amplifier modules for 2m, up to 1000 or 2000W output power. Comes installed on solid 5mm copper plate for installation on a larger heat sink. An inhibit input can be used to shut down the amplifier in case of high SWR or other malfunctions. Input and output are designed to use 50Ω, allowing direct connection to coaxial cable or coaxial sockets. For operation a low pass filter like IL-1KLPF is recommended. When using higher input power or as protection against power peaks a power divider at the input is recommended, for example the IL-ATT-6DB.

Super compact final amplifier module for 70cm, up to 500W output power. Comes installed on solid 5mm copper plate for installation on a larger heat sink. An inhibit input can be used to shut down the amplifier in case of high SWR or other malfunctions. Input and output are designed to use 50Ω, allowing direct connection to coaxial cable or coaxial sockets. When using higher input power or as protection against power peaks a power divider at the input is recommended, for example the IL-ATT-6DB.

Super compact final amplifier module for 23cm, up to 220W output power. Comes installed on solid 5mm copper plate for installation on a larger heat sink. An inhibit input can be used to shut down the amplifier in case of high SWR or other malfunctions. Input and output are designed to use 50Ω, allowing direct connection to coaxial cable or coaxial sockets. When using higher input power or as protection against power peaks a power divider at the input is recommended, for example the IL-ATT-6DB.

Download: Datasheet IL-1296-220 (PDF, EN, 220KB)
Download: Datasheet IL-ATT-6DB Attenuator (PDF, EN, 100KB)

 

144 MHz 1000 W Box

Power Amplifier module with heat sink, integrated low pass filter and SWR bridge. Suitable to construct FM/SSB and CW amplifiers. 50Ω in- and outputs equipped with HF connectors, 50Ω coupler output at -60dB available for measurements, temperature sensor built in. The integrated low pass filter suppresses harmonic signals with at least -75dBc. The integrated SWR bridge checks the output SWR and closes down the amplifier in case of high SWR.

	IL-144-1KBOX
Frequency Range:	142 - 146 MHz
Input Power:	3.5W ± 1dB
Output Power:	ca. 1000 W
Supply Voltage:	47 - 50V DC
Max. Current:	32A
Input:	50 Ω SMA female
Output:	50 Ω N female
Monitor Output:	50 Ω, -60dB, SMA female
SWR (Input):	< 1.5:1
Modes:	CW, FM, SSB
Transistor:	MRFE6VP61K25H
Max. temperature on heat sink:	70°C
Size:	220 x 120 x 84mm
Weight:	ca. 1500g

Order No.
IL-144-1KBOX	PA Module 'Box' 144MHz, 1000W	1169.00 €
IL-PSU	48V, 30A Switching Power Supply	390.00 €
IL-PSU-KIT	Connector Kit for IL-PSU	35.50 €

Download: Datasheet IL-144-1KMOD PA-Modul (PDF, EN, 320KB)
Download: Datasheet IL-144-1KLPF Tiefpass (PDF, EN, 230KB)
Download: Datasheet IL-144-1KBOX PA-Box (PDF, EN, 320KB)
Download: Datasheet IL-ATT-6DB 6dB Attenuator (PDF, EN, 100KB)

 

432 Mhz 500 W Box
 

Power Amplifier module 432MHz with heat sink, integrated low pass filter and SWR bridge. Suitable to construct FM/SSB and CW amplifiers. 50Ω in- and outputs equipped with HF connectors, 50Ω coupler output at -60dB available for measurements, temperature sensor built in. The integrated low pass filter suppresses harmonic signals with at least -75dBc. The integrated SWR bridge checks the output SWR and closes down the amplifier in case of high SWR.

	IL-144-1KBOX
Frequency Range:	430 - 434 MHz
Input Power:	4W ± 1dB
Output Power:	ca. 500 W
Supply Voltage:	46.5V DC
Max. Current:	20A
Input:	50 Ω SMA female
Output:	50 Ω N female
Monitor Output:	50 Ω, -60dB, SMA female
SWR (Input):	< 1.5:1
Modes:	CW, FM, SSB
Transistor:	MRF6V2300
Max. temperature on heat sink:	70°C
Size:	220 x 120 x 84mm
Weight:	ca. 1500g

Order No.
IL-432-.5BOX	PA Module 'Box' 432MHz, 500W	1472.00 €
IL-PSU	48V, 30A Switching Power Supply	390.00 €
IL-PSU-KIT	Connector Kit for IL-PSU	35.50 €

Download: Datasheet IL-432-.5MOD PA-Modul (PDF, EN, 340KB)
Download: Datasheet IL-432-.5BOX PA-Box (PDF, EN, 310KB)
Download: Datasheet IL-ATT-6DB Attenuator (PDF, EN, 100KB)

 

       6 DB Power Divider

Power Divider as a chip, to be installed directly in front of the input of the PA module, onto the heatsink.

This power divider serves two purposes. One it protects the amplifier against too high input power loads as a result of an operator error. Secondly it is not advised to reduce the power of a driver transceiver to some watts, because linearity usually decreases at low power levels. So better run at a medium power level (and good linearity) and then reduce the power level with a divider. Further, some transceivers produce a full power spike even at low poer settings, against which this divider can protect.

Order No.
IL-ATT-6DB	6dB Power Divider Italab	33.50 €

Download: Datasheet IL-ATT-6DB Attenuator (PDF, EN, 100KB)

 

Low Pass Filter 144 MHz 1kW

Low pass filter for 144MHz (2m band) for high power levels of up to 1000W. Suitable for use behind a power amplifier of up to 1kW output. Low insertion loss, good suppression of harmonics. Built on PTFE (Teflon) PCB.

Technical Data IL-144-1KLPF

	IL-144-1KLPF
Frequency Range:	140 — 150MHz
Power:	max. 1000 W
Input SWR (@ 144MHz)	≥ -30dB
Insertion Loss:	≤ 0,18dB
Harmonics Attenuation:	≥ -60dBc
Impedance:	50 Ω
Temperature Range:	0 — 80°c
Size:	100 x 75mm
Weight:	100g

Order No.
IL-144-1KLPF	Low Pass Filter 1000W 144MHz	156.00 €
IL-144-2KLPF	Low Pass Module 144MHz, max. 2,5kW	234.00 €

Download: Datasheet IL-144-1KLPF Low Pass (PDF, EN, 200KB)
Download: Schematic IL-144-2KLPF Low Pass (PDF, EN, 25KB)
 

Power Supply 48V 1800 W

Powerful and compact switching power supply for 48V, up to 1800W continous output power..

The Eaton APR48 power supply is a switching supply with high efficiency, designed for continous operation in communication systems. The professional electronics of the power supply has an excellent power factor correction (PFC) at a nominal efficiency of up to 92%. The ambient temperature can be as high as 70°C. All connectors on one side, direct plug system on PCB. For connection to mains and DC a special connector is required,  reference IL-PSU-KIT.

IL-PSU-KIT