Last update: 18-October-2001

Fx-GNOME

An extreamly small and powersaving frequency counter. It can perfectly be used as a frequency display unit for portable radio transceiver.

                                                 Published in the German HAM Radio Magazine CQ-DL 11/2001


Beschreibung/Description:

Extended Summary of the article of the HAM-Radio magazine CQ-DL 11/2001

Erweiterter Artikel aus dem HAM-Radio Magazin CQ-DL 11/2001 


Spezifikation/Specification:

 Input frequency : w/o prescaller  180 MHz sens. 0.3 .... 5 Vpp  
  w/ prescaller  1.8 GHz sens. 0.4 .... 1 Vpp  
         
 Gate:  1s   0.1s  (0.01s)  (0.01 s may work!)
         
Precision counter:  1 Hz  10 Hz  100 Hz no prec. < 190 MHz
   2 Hz  20 Hz  200 Hz pre. 1/2 < 410 MHz
   4 Hz  40 Hz  400 Hz pre. 1/4 < 830 MHz
   8 Hz  80 Hz  800 Hz pre. 1/8 < 1.8  GHz
   x Hz  10*x Hz  100*x Hz pre. 1/x
         
Precision LCD : 11 dig.+dp *     e.g. 10368.000000
     10 dig.+dp *   e.g. 10368.00000
       9 dig.+dp * e.g. 10368.0000
         
Current :  < 15mA ...
... 35mA
  dep. on frequency and TCXO current  without backlight
         
 Size:              l                    h
Board
    65 mm      45 mm    15 mm
         LCD - EA7123      total     30 mm      45 mm  
         
     visible      15 mm      35 mm  
         LCD - TTR6030      total      28 mm      22 mm      5 mm
       visible        7 mm       20 mm   
         LCD - universal      total      88 mm      55 mm     25 mm
            visible      60 mm      18 mm  
         
 * dp not for TTR6030        


Schematic (Rev. 3) Part 1 Part 2 Part 3
       
Assembly drawing (Rev. 3) Top  Bottom
       
Pictures of the board Top   Bottom 
Display example  Display1 Display2  Display3 Display4   

 

Download PC maintain tool GNOMESETUP (zipped 1.524 MB)
Download AT89C4051 software GNOME10A.bin for EA7132 (4 KB)  
Download AT89C4051 software GNOMEC10A.bin for TTR6040 (4 KB)  
 
 I2C LCD Datasheets
EA7123          (760KB, mixed language!) (Datasheet by Electronic Assembly)
TTR6030       (156KB)  (Datasheet by Conrad Electronic)

Universal LCD I2C/V24 adapter board

 


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