JC-3 manual version 8.1 page 2
combination it has done before! ( If it fails because the antenna system has changed, it repeats the tuning
procedure and saves the new combination in the same memory position.)
ERASING MEMORIES
To erase the memories we set the switch on the control box to the N position and without transmitting we press
the button till the led is lit. Then we set the switch to the up position again. The led is blinking and when it
finishes the memories have been erased!
SPECIFICATIONS
Circuit type
reversible L or Π
Input capacitance step (coaxial side)
16pF
Output capacitance step (antenna side)
9pF
Inductance step
80nΗ
Total capacitance
1800pF
Total inductance
20μΗ
RELAYS used
Omron G2R-1 and Siemens V23127
Operating frequencies
3 to 50 ΜΗΖ
Maximum power for antennas > 15μ.
200W SSB ( 50W AM )
Minimum antenna length for 200 W SSB
10μ.
3 to 50 ΜΗΖ
Minimum antenna length for 50 W ΑΜ
10μ.
6 to 50 ΜΗΖ)
Recommended tuning power
10 – 20 W (carrier)
Typical tuning time
1 – 3 sec.
Maximum tuning time
6 sec.
Supply voltage limits
12.5 – 16 V
Maximum supply current
0.7 A
Typical VSWR (tuner input )
< 1.1 : 1
Maximum VSWR (tuner input)
< 1.9 : 1
Protection ( NOT FOR LIGHTNING STRIKE ! )
Static discharge
Dimentions ( without mounting bracket )
COUPLER
19 x 10.5 x 9.5 cm
CONTROL BOX
Connection with
Power supply:
RED = +12 V
BLACK= -12V
BROWN
+12V
–12 V returns to supply via coaxial shield !
GREY
START
Led remains lit for 10 sec when start button is
pushed . (Send carrier to perform tuning…….)
YELLOW
KEY
(……..coupler is tuned when LED is off )
BLACK
MEMORY
ENABLE/DISABLE (CTRL BOX : Y -> EN / N-> DIS)