background image

9  

1,0

5,0

1,500

11,500

21,500

31,500

41,500

51,500

G

ai

n

 d

B

Frequency (MHz)

MLA100 Typical Gain vs Frequency

Error 

Warning 

Action 

 

 

 

PIN Switch RX 

Cycle single flash LED Prot. 

Reboot Amplifier. If the roblem persists contact customer support 

PIN Switch TX 

Cycle 2 Flashes LED Prot. 

Reboot Amplifier. If the roblem persists contact customer support 

TX Frequency Error 

Cycle 3 Flashes LED Prot. 

No Tx 30 MHz to  50MHz 

FCC 

Cycle 4 Flashes LED Prot. 

USA Model. Band Blocked 26-28 MHz. Change TX frequency  

TX Frequency High 

Cycle 5 Flashes LED 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 power <7W.  

Excessive Input VSWR 

Cycle 10 Flashes LED Prot. 

Check connection between transceiver and amplifier,. If problem 
persists contact customer support. 

Excessive Amplifier 
Temperature 

Cycle 11 Flashes LED Prot. 

Amplifier too hot. Allow time to cool down, reset is automatic 
when temperature falls to within  acceptable limits. 

10  

 
 
 
 
 
 
 
 
 

 

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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