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MLA100 

HF & 6m Linear Amplifier

 

Specifications: 

 
Operation Frequency:  

 

 

1.8—30 MHz & 50—54 MHz 

Modulation Types:    

 

 

SSB,CW,AM, FM, data etc (All narrowband modes) 

Transistor:   

 

 

 

2x  Mitsubishi RD100HHF1 

Max I/P Current: 

 

 

 

16A  

Power Supply:  

 

 

 

13VDC+/- 1V 25A 

Input Fuse    

 

 

 

1x20A 

Input RF Power:  

 

 

 

1-10W max (All modes) 

Output RF Power:   

 

 

100W max HF 80W 6m  

Maximum bypass power (Amplifier off):  50W max 
Input VSWR:  

 

 

 

1.1—1.8:1 

Output VSWR Maximum:    

 

2.5:1 

Harmonic Output:   

 

 

>-50dBc 1.8-30MHz & >-60dBc 50-54 MHz 

WARNING: 

Before using this product please read carefully all of 

the information in this manual or at least the quick start guide!!! To avoid dam-
age or incorrect operation this is extremely important!!! 

Ver 1.0 May 2018 

2  

Quick Start Guide:  

 

 

A more complete guide to the installation is featured later 

 

 

1.  Connect the RTX input connector 

to transceiver 

with 50 Ohm patch cable  
 

2.  Connect the ANT Output 

of the Amplifier to ATU /

VSWR Bridge, (If required), and then the Antenna (50 
Ohm load Impedance)  
 

3.  Connect the PTT cable from the transceiver to the 

amplifier. PTT is Active low. (The MLA100 will work 
without the PTT connected but it is recommend to 
use it for CW and SSB modes). 
 

4.  Connect the DC power Cable to the amplifier 

c

 to a 

suitable 13VDC (± 1V) Power Supply or Auto Battery. 
Pay attention to the correct polarity 
 

5.  Make sure that the amplifier is switched off 

[

 

 

6.  Adjust the Transceivers RF output power to 5W, if it 

is capable of more than 5W output. 
 

7.  Test that the antenna connected is suitable for the 

band required, if not use an ATU to match the an-
tenna with the amplifier switched off. 
 

8.  Switch on the Amplifier, press and hold  

2 secs. 

 

9.  The amplifier will automatically select the correct 

band filter on the first transmission. 

 

Содержание MLA100

Страница 1: ...tured later 1 Connect the RTX input connector e to transceiver with 50 Ohm patch cable 2 Connect the ANT Output f of the Amplifier to ATU VSWR Bridge If required and then the Antenna 50 Ohm load Impedance 3 Connect the PTT cable from the transceiver to the amplifier PTT is Active low The MLA100 will work without the PTT connected but it is recommend to use it for CW and SSB modes 4 Connect the DC ...

Страница 2: ...he ampli fier should be connected to the input and then the antenna to the output of this device This or der of connection is very important Check also that the Antenna is suitably rated for the power output level Antenna SWR should not change much from low to high power The antenna should be tuned before switching on the power amplifier In SSB CW mode the PTT input c should be connected to the tr...

Страница 3: ...orrect RF earthing techniques are however beyond the scope of this manual Mobile use should ensure that the ground connections are well bonded to the vehicle chassis ground for best results 6 Antenna Considerations The amplifier is designed to work into a 50 ohms resistive load and any antenna outside of this requirement must use an antenna tuning unit ATU AMU between the output of the ampli fier ...

Страница 4: ...our signal less intelligible at the distant receiver station Running the amplifier a little under max output will also allow the amplifier to run cooler and make it more reliable for many years of use As an example consider the following situation 1 S point on a receiver is usually approximately calibrated at 6dB so for example the differ ence between S5 and S7 2 S points is 12dB The difference be...

Страница 5: ... Prot No TX Above 54MHz Change TX frequency TX Frequency Low Cycle 6 Flash LED Prot No TX Below 1 5MHz Change TX Frequency Excessive Output Power Cycle 7 Flashes LED Prot Reduce input power Pin 10W Excessive Antenna VSWR Cycle 8 Flashes LED Prot Investigate Antenna VSWR Change antenna or use ATU to reduce VSWR 2 0 1 Excessive Input Power Cycle 9 Flashes LED Prot Excessive Input Power Reduce input ...

Страница 6: ...ty of the user The manufacturer declines any responsibility from unlawful use Warranty This product is covered by a 24 month warranty commencing from the date of purchase The original purchase receipt will be required for any claim This warranty does not cover aesthetic damage or damage to the RF power transistors from incorrect use www rmitaly com e mail Info RMItaly com ...

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