ADONISFLEXIBLE MOBILE MICROOHONE

FX-7500

INSTRUCTION MANUALSpace Electric Corporation
OSAKA, JAPANFLEXIBLE MOBILE MICROPHONE FX-7500
INSTRUCTIONS
Thank you very much for your purchase of Mobile Microphone model FX-7500.
The Model FX-7500 is newly provided with flat type switch and control boxes for batteries to be
set on any place in the car. Also it is provided with the electronic sound signal for TX and RX
selection.

FEATURES:● The power feeding can be done from mobile battery (DC12V), normal dry battery and microphoneconnector of transceiver.
● The uni-directional microphone serves to reduce the background noise.
● The microphone is equipped with UP/DOWN Switches and LED TX Indicator.
● Variable microphone sensitivity by the output level adjustment volume.
● Provided with light-touch PTT switch and electronic sound for checking TX and RX operation.
● Provided with Non-Modulation Prevention Circuit with alarm sound.

PART NAMES: (Please refer to the illustration.)①②③④⑤⑥⑦⑧⑨⑩⑪⑫⑬

Flexible Gooseneck
Mounting Hardware
Mic. Cord w/Pin Plug
Mic. Input Pin JackSwitch Box
PTT Switch
LOCK Switch
UP Switch
DOWN SwitchTX Indicator(RED LED)
Contro1 Box
Mic. 0utput Level Volume
Mic. 0utput Cord w/8P
Interconnecting Jack
⑭ Lead-wire for releasing Of
Non-Modulation Prevention⑮ Battery Cover⑯ Power Cord
⑰ Mic. Interconnecting Cable(Separately available)-ACCESSORlES⑱ Wind-Shield⑲ Power Feeder Connector⑳ Double-Side Adhesive Tape
6 Magic Tape

HOW TO MOUNT AND CONNECT:
1.
2.
3.
4.

Fasten the mounting hardware② to sun-visor or fix it to any convenient Place with setscrew.
Mount the switch box⑤ to the convenient place to control by double-side adhesive tapeprovided.(Cut the tape to half size and put them onto the both ends of case.)
Connect the Mic. Cord with Pin plug③ to the Mic. Input Pin Jack④ coming from the control
box⑪.
Connect the suitable microphone interconnecting cable⑰ separately available to the Mic.

SEC- 2 -0utput Cord⑬ and to the transceiver.(The Mic. Interconnecting cable has a directional
characteristic. Be sure to check it before connecting.)
5. Mount the Control Box⑪ to the suitable place without any trouble for driving , by magictape.

HOW TO CONNECT POWER FEEDER CONNECTOR(Wire-Self-Strippable Type) :1. Put the (+) side power cord of transceiver and microphone power cord(Red color)on the grooves
in the connector.
2. Fix them tentatively.
3. Press the insulation cover down to be lockedwith pliers.
(1)

(2)

(3)

TERMINAL CONNECTION OF OUTPUT CORD(Interconnecting Jack) :
1.
2.
3.
4.
5.
6.
7.
8.

E: Earth（Mic. Signal）
M: Mic. Signal
P: PTT(press to talk)
G: Earth(for PTT)
U: Up
D: Down
C: U/D Common
B: DC Power Feeding (+)

ShieldYellow
Red
Purple(Blue)
GreenWhiteOrangeGray

HOW TO USE:
● When pushing the PTT Switch⑥,the condition is kept at transmitting.
● Immediately after pushing the PTT switch, the sound 'Pip' from control box informs of changing
the condition to TX, then, TX indicator⑩ lights up.
● To keep TX condition, push the Lock Switch⑦. It sounds ‘Peep’ and the LED TX indicator
Lights up continuously. To reset to RX condition, push the PTT switch.
● UP Switch⑧ and the DOWN Switch⑨ are the same function as those of the microphone provided
with transceiver.
● Keep the distance of 10cm or less between your mouth and the microphone.
● The Output level is factory-preset to optimum level. However, when you
cannot get optimum level of modulation, please re-adjust it. Turn theadjusting volume⑫ to clockwise with minus driver carefully for volume
increase and to anti-clockwise for decrease under monitoring by localstation.

NON-MODULATION PREVENTIONCIRCUIT:
In case you push the Lock switch without any intention, the condition of Non-Modulation willcontinue and makes trouble for other local stations. TO prevent such a condition, the alarm circuit
will activate after 2 or 3 minutes’ TX condition with alarm sound. After 30 seconds of sounding,the condition will be changed to RX mode. If you prefer to stop the sounding and to continuetransmitting, please push the LOCK Switch⑦ again.

WHEN YOU WANT TO RELEASE THE NON-MODULATION PREVENT CIRCUIT:
Please cut the lead-wire⑭ for releasing the non modulation prevention circuit.

SEC- 3 -POWER SUPPLY:
The 3-Way Power Sources.
● When using battery, put the 2 pieces of UM3 batteries into the case after removing the battery
cover⑮. In case you can find the following conditions, please change the batteries.
1. The' TX Indicator⑩becomes dark.
2. The electronic sound from control box becomes lower.
3. The alarm sound of Non-Modulation Prevention Circuit goes down.
● When operating with Car battery(DC12V),connect the Power Cord ⑯ with the Power Feeder
Connector ⑲ to (+)side of the transceiver.
● When getting the DC Power from transceiver.
IF the transceiver Mic. connector has a output of DC Power feeding, DC5V ～ 9V 50mA,“D”
series Interconnecting cable, optionally available, can be connected directly withgetting the DC Power transceiver microphone connector. The wiring of power feeding line
⑯ is not required.

RE FEEDBACK NOISE:
When transmitting with low power, the noise may be negligible. But, when transmitting with highpower, there are possibilities to have abnormal modulation interference with offensive soundand other noise. In such a case, the bad matching between antenna and coaxial cable may cause
the problem, i.e., the Standing Wave effects onto microphone cable. To get better condition,please do not place the microphone cable in parallel to the antenna coaxial cable. Also pleasecheck the SWR between antenna and transceiver.

CAUTIONS:● Please do not beat the microphone when adjusting the output level and at QSO.
● Regarding the microphone interconnecting cable, please be sure to use “ADONIS” Microphone
Interconnecting Cables, separately available.
● The Alkaline Batteries are recommendable to this microphone.
● Please keep microphone away from high temperature and moisture area.
● We may notify this Unit to have better Specifications and design Without any advance notice.

SPECIFICATIONS:
●
●
●
●
●
●
●

●
●
●
●
●

High Quality Electret Condenser Microphone: 1piece
Flexible Gooseneck: 8mmφ(Total Length:280mm)
Microphone Cord: 3m
In/Output Cord(w/8P Interconnecting Jack ＆ RCA Jack) : 70cm
Matching 0utput Impedance: 500Ω～100kΩ
Output Voltage: O ～ 50mV(RMS)
Power vo1tage
Battery (UM3 batteries×2): DC3VPower Cord
: DC5～15V“D” Series interconnection cable: DC5-15V
Alarm Sound:Approx. 4.5KHz (Intermittent Sound)
The Releasing of Non-Modulation Prevention Circuit: By Cutting the Lead wires
Switch Box Size
: 12(H)× 52(W)×55(D)mm
Control Box Size
: 22(H)×67(W)×110(D)mm
Weight: 330g

SEC- 4 -