2
8. EQ OUTPUT (8 pin circular plug; pin configuration: please refer to Table 9)
Connects a proper microphone cord (Optional) for the transceivers
9. Ground
While using this unit, in case of high VSWR with antenna, leakage of coaxial cable, external power supply
noise, external noise, etc., connect a wire between the transceiver and ground terminal of this unit.
Please try this when such noise is involved and enjoy communication without any noise.
10. POWER INPUT TERMINAL
Most recent transceivers providing DC 5 - 9 volts for the microphone can power the EQ-2000 by proper
wiring of microphone cord. However, 4 pin old type transceiver or tube type transceiver does not provide
power from the microphone connector. In such case, you can externally power DC 8 - 18V through the DC
terminal of EQ-2000 with a battery or low ripple well regulated power supply or AC adaptor.
Wiring method for various transceivers
Please refer to the following Table 1 to Table 8, and Figure 1.
Method to change the wiring is as follows: 1. Loosen 4Ea of M3*8 nut from top cover; 2. Connect a CON1,
CON3, J1, J2, J3, and PCB ground terminal to your microphone after referring to the following Tables.
Table 1. DTM-501/502 desktop microphone
Table 2. ICOM 8pin circular plug (I-8P): IC-707, 721,726,729,736,746,756,760,761,765,775,781,821,
Table 3. ICOM 8pin modular plug (I-8M): IC-706 Series
Table 4. KENWOOD and ALINCO 8pin circular plug (K-8P): TS-50, 140, 440,450,570,690,790,850,
870, 940,950,2000, DX-70, DX-77
Table 5. KENWOOD 8pin modular plug (K-8M): TS-V7, D-700,
Table 6. YAESU 8pin circular plug (Y-8P): FT-847, 920,990,1000MP,
Table 7. YAESU 8pin circular plug (P-88Y): FT-840, 1000,1011,1021,
Table 8. JRC 8pin circular plug: JRC-135, 145, 245
Table 9. Others
Please contact us regarding other transceivers or microphones not mentioned above
Cautions
1. For microphone input: in case of dynamic microphone, place the internal jumper (JP1) to the OFF
position. Factory setting is at the ON position.
2. Microphone cord (optional) is marked for Microphone side and Equalizer side on plugs. Please be
sure to properly connect plugs; otherwise, it causes a malfunction or does not operate properly.
3.
Please avoid placing it in a place with direct sunshine, high temperature or high humidity.
This will cause a malfunction or improper operation.
4. We are not responsible for any malfunction caused by your modification of the unit.
