Elad Fdm77 Hf Receiver Operating Manual

      E L A D
A ppar ecch i at u r e  el et t r on i ch e  pr of es s i on al i 
P r of es s i on al   el ect r on i c  dev i ces
   
   
All Mode SDR Receiver  
10 KHz ~ 65 MHz  
    
 
     
Operating Manual  
        

          2
 
 Page 
Index    2 
  
1 Overview.    3  
1.1 Introduction     3 
1.2 Configuration    4  
1.3 Front & Rear Panel          5   
1.4 Installation and Power Supply   5 
1.5 Accessories    7 
1.6 Controls and Functions   8 
  
2 Operation of the Receiver – Basic   9 
2.1 Switching on the FDM – 77    9 
2.2 Selection of the front -end input set -up.   9 
2.3 Frequency selection   10 
2.4 Tuning Steps   11 
2.5 Mode Selection   12 
2.5.1 DRM reception status window.    12  
2.6 Band Selection...

          3
 
     
1 Overview. 
   
1.1 Introduction  
  
The  FDM -77  is  conceived  as  a  SDR  (  Software  Defined  Radio).  This  approach  m eans  that  the 
receiving set is composed of a Hardware RF front -end and a PC with an ELAD Software Radio.   
  
The  Software  Radio  is  the  operator’s  main  interface  (GUI)  for   the  control  of  the  radio  (Input, 
Tuning, Setup, Mode, Display and AF ) and is also used to decode and reproduce t he audio through 
the PC soundcard.  
 
 
   
There...

          4
 
 
    
The FDM -77 set includes :  
 
·  RF front -end ( The Gray box on the right side)  
·   ELAD software radio ( CD ROM)  
·   Power supply ( The black box on the left side)  
·   Audio cable  
·   USB cable  
  
Personal Computer is not included.  
      

          5
 
1.3 Front & Rear Panel 
  
The front panel of the Hardware RF front -end includes:
 
  ·   A POWER ON LED   
·   A MONITOR LED  to show the communication establishe d between the Hardware RF front-end and the PC.  
·   A 7 LEDs BAR to show the presence and relevant stre ngth of a signal at the input of the receiver. 
 
The rear panel includes:
 
  ·   A SO 239 socket for the connection of an external a ntenna. 
·   A BNC socket for the connection of an indoor antenn a. 
·   A SPDPT switch...

          6
 
·  Connect the external antenna through a good quality RG 8 coax cable f itted with a PL 259 Plug 
or  the  indoor  antenna  through  the  BNC  socket.  Best  performances  are  obtai ned  with  a  good 
external  antenna.  If  an  external  antenna  is  not  available  we  recom mend  the  use  of  the  whip 
antenna offered as optional, but every indoor antenna provided with a BCN plug is suitable.  
·   Through the supplied shielded cable fitted with  3.5 mm stereo plugs connect  the 12...

          7
 
1.5 Accessories  
  
Your FDM -77 is supplied complete of the following accessories:
 
·   A mini 1/8” 3.5mm stereo plug male to male cable ( L = 2m).  
·   A MH USB 2.0 cable A to B (L = 1.8m)  
·   A 230 V AC / 12 V DC power supply   
 
 
  
Optional accessories:
 
·   Rechargeable Battery pack   
·   Whip indoor antenna   
 
    

          8
 
1.5 Controls and Functions  
  
1.5.1 Graphical user Interface (GUI).  
 
Main screen  
  
The screen shot below shows the main screen (the cockpit) of the Graphical User I nterface : 
   
 
    
In the upper left side there is a window dedicated to:   
display  the  operating  frequency,  mode  (  CW,  LSB,  USB,  AM,  FM,  DRM),  VFO  (variable 
frequency oscillator) , MEM and CH to select the operating frequency .   
  
In the upper right side there is the window dedicated to :  
display...

          9
 
2 Operation of the Receiver – Basic 
  
2.1 Switching on/off the FDM – 77  
Insert the 12V DC plug cable into the DC socket  and push on/off the switch on the rear panel of the  
radio. Power on will be indicated also through the “power on”  led on the front panel. In order t o 
avoid blocking of the software the following sequences must be followed.  
Switching on :  
1.  Connect the 12 V DC  and switch on the power on/off switch  
2.  Connect the USB cable from de PC to the RF front -end....

          10
 
2.3 Frequency selection 
There are two main modalities to choose the operating frequency: VFO and  MEMORY. 
  
2.3.1 Selection of the operating frequency through the main shuttle knob.  
Click the VFO button ( the VFO label is activated in the Frequency  window) if you want to browse 
the  frequency  range  trough  the  main  shuttle  knob  as  in  a  traditional  wa y.  This  is  the  free  VFO 
control.  
 
 
  
2.3.2 Selection of the operating frequency through the memory.  
Click  the...