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REAR PANEL CONTROLS

-11-

(12) MIC Input (J9)

(13) Mic Input (J6)

This 3 pin XLR female connector works independent

of the mic select switch and may be used as another mic source.

Do not use this connector when Mic In J6 or J8 is being used.

This RCA female connector is used as an auxiliary

microphone input. This connector works independent of the mic
select switch and may be used for another audio source or
microphone. This input is also low impedance. Do not use if mic
is connected to J8 (11) or J9 (12).

(14) PTT INPUT (J7)

(15) MIC Out Select A/B (S4)

(16) Mic Output A (J5)

RCA female connector for auxiliary push to talk control. A foot

switch or other control may be connected to this connector.
Grounding the center jack of the connector grounds the push
to talk line on the Mic Out.

This two position slide switch directs audio to the 5 Pin DIN

Mic Out A (16) or the 5 Pin DIN Mic Out B (17).

5 Pin female DIN connector that has noise gate / equalizer

audio plus push to talk outputted. This connector is active
only when the Mic Out Slide Switch S4 (15) is in the
Mic Out Select A position.

XLR PIN Description.

1

gnd. / shield

2

+ Mic

3

- Mic

-18-

Before plugging the power transformer into the wall preset the

following controls as indicated:

and

switches all off.

to select microphone you will be using.

Connect your microphone into the

rear connector. Plug the

power transformer (module) into the wall and into the
connector of the unit. Attach the microphone cable between your
transceiver/transmitter and the

of the unit. If the microphone

being used is an electret mic (ICOM HM12, SM6,...) and requires
D.C. on the mic line plug the shorting jumper supplied onto the

pins at the bottom of the case otherwise leave it off. Turn

the

switch on. The orange/yellow

should go on.

, using a screwdriver, turn the

(located at the bottom of the unit) clockwise

until the

just goes on. Now turn the Mic in Level control

counterclockwise such that

when you

speak into the mic.

, using a screwdriver, turn the

control clockwise until the audio level, as shown by

your transceiver's/ transmitters metering is at the proper level. If
you are using push to talk on your transceiver you will have to
push the PTT switch on your microphone while making this
adjustment.

Turn the

on. (Please note that when the

is off the

should always go

on indicating audio is being sent / gated to the

. When the

is turned on the

may be on

or off depending on the position of the

control

and the

audio level.) Adjust the Noise Gate Level control until

the Noise Gate LED just goes off.

(If audio is coming from your

transceiver's/ receiver's speaker you should turn off the audio.)
When you now talk into your microphone the
should go on indicating audio is being sent to the

When

you stop talking the

should turn off indicating

that audio is not being sent and background noise is not being
sent / gated to the

.

Power, Equalizer

Noise Gate

Mic Select

Mic In

Power

Mic Out

MIC

Jumper

Power

Power on LED

Mic In Level Control

Mic LED

Mic Out Level

Noise Gate Switch

Noise Gate Switch

Noise Gate LED

Mic Out

Noise Gate Switch

Noise Gate LED

Noise Gate Level

Mic In

Noise Gate LED

Mic Out.

Mic Out LED

Mic Out

Adjusting the Mic Levels

the LED never goes on

While talking into the microphone

While talking into the microphone

This adjustment should be made

with the level of ambient noise that will be present when you will
be talking into the microphone.

Noise Gate Adjustments

GETTING STARTED TUTORIAL

Содержание W2IHY

Страница 1: ...W2IHY 8 BAND AUDIO EQUALIZER AND NOISE GATE OPERATING MANUAL ...

Страница 2: ...T PTT GND GND GND GND GND GND 4 Pin Mic Connector Pin 3 4 Pin Mic Connector Pin 2 4 Pin Mic Connector Pin 3 4 Pin Mic Connector Pin 2 4 Pin Mic Connector Pin 2 4 Pin Mic Connector Pin 3 4 Pin Mic Connector Pin 1 4 Pin Mic Connector Pin 3 4 Pin Mic Connector Pin 1 4 Pin Mic Connector Pin 1 2 Pin Mic Connector Pin 1 2 Pin Mic Connector Pin 2 2 Pin Mic Connector Spring Case 4 Pin Mic Connector Pin 2 ...

Страница 3: ...in Mic Connector Pin 8 8 Pin Mic Connector Pin 5 8 Pin Mic Connector Pin 3 8 Pin Mic Connector Pin 1 8 Pin Mic Connector Pin 1 8 Pin Mic Connector Pin 7 8 Pin Mic Connector Pin 5 8 Pin Mic Connector Pin 6 Shield of Cable Shield of Cable Shield of Cable Shield of Cable 8 Pin Mic Connector Pin 2 8 Pin Mic Connector Pin 2 8 Pin Mic Connector Pin 6 8 Pin Mic Connector Pin 7 8 Pin Mic Connector Pin 7 8...

Страница 4: ...alanced Output to Low Impedance Radio 5 PIN DIN MIC OUTPUT CONNECTION Low Impedance Unbalanced Output to Low Impedance Radio Low Impedance Unbalanced Output to High Impedance Radio High Impedance Unbalanced Output to High Impedance Radio DO NOT CONNECT MIC WIRE SHIELD TO SHIELD OF DIN CONNECTOR CONNECT ONLY AS SHOWN MIC OUT A B 5 Pin Male DIN Din connectors shown on side to be soldered Gnd Mic cab...

Страница 5: ...ing Mic Out Wiring Options 25 Mic Out and Pwr Cable Wiring 26 27 MIC IN Shortest Lead Shortest Lead Shortest Lead Shield not Connected J16 C41 01uf J2 MIC IN PIN 1 PIN 7 J9 PHONES PIN 1 PIN 2 J1 3 J1 1 J1 15 J1 2 J1 16 J1 14 J1 13 10 16 1 2 10 6 10 E17 Note that J1 X is the flat ribbon cable shown on page 15 S h ie ld S h i e l d Shield Shield S h ie ld S h i e l d S h i e l d S h i e l d Shi eld ...

Страница 6: ...r operators transmit audio in high ambient noise environments Typical high noise sources include linear amplifier fans dehumidifiers room air conditioners road and wind noise during mobile operation etc The Noise Gate eliminates the aforementioned noise from being transmitted On the air tests in high ambient noise conditions have shown the Noise Gate to be very effective The removal of moderate to...

Страница 7: ...S1 Phones monitor Volume Control R29 7 1 2 3 4 5 6 9 8 7 8 BAND EQ BOARD PC BOARD LAYOUT AND PARTS Mounted on pin side of P C board 22 C15 1 uF mylar C16 1 uF monolithic C17 18 uF mylar C18 19 4 7 uF Tantalum electrolytic C20 100 uF electrolytic R1 10 ohm watt 5 Res R2 R3 1K ohms watt 5 Res R4 3 3k ohm 10 pin 9 RES SIP R5 R6 3 3K ohm 10 Pin 5 Res SIP R7 15 0K ohm watt 1 Res R8 100K ohm 10 Pin 9 Re...

Страница 8: ...ndicate when audio is being sent gated to the output The LED being on green indicates that audio is being gated through the unit to the output The LED being off indicates that audio is not being passed gated through to the output When the Noise Gate On Off Switch 5 is in the off position the noise gate LED is on 8 8 BAND EQ MOTHER BOARD PC BOARD LAYOUT AND PARTS 21 Parts mounted on pin side of P S...

Страница 9: ...ise Pushing this control down will make the unit more sensitive to background noise This control adjusts the length of time audio will be gated to the output after the noise gate has automatically turned off Noise gate LED off Pushing the delay slide pot up increases the delay decay time Pushing the pot down decreases the delay time This LED is used to help adjust the MIC In Gain pot When the LED ...

Страница 10: ...e best setting for you If you have medium to high levels of ambient noise present when you are transmitting with the in the off position when you stop talking your power meter will indicate R F still being transmitted set power meter on avg power to do this experiment When the noise gate is turned on and properly adjusted when you stop talking the power output will drop to the bottom of the scale ...

Страница 11: ...g jumper supplied onto the pins at the bottom of the case otherwise leave it off Turn the switch on The orange yellow should go on using a screwdriver turn the located at the bottom of the unit clockwise until the just goes on Now turn the Mic in Level control counterclockwise such that when you speak into the mic using a screwdriver turn the control clockwise until the audio level as shown by you...

Страница 12: ...ed REAR PANEL CONTROLS 17 C2 1uf 100 Hertz C1 01uf 7 R1 3 3K R2 3 3K R5 100 K U2b TL074 R6 100K R3 1 M R4 1 M Each EQ bandpass filter is very similar The center frequencies of each bandpass filter is determined by the values of the capacitors and resistors used The equations below define what capacitor values are required for a given center frequency Below is a schematic of a bandpass filter with ...

Страница 13: ...100 K R8f 100 K R17 100 K R21g 1M R23c 1M R4g 3 3K R6b 3 3K R6c 3 3K 5 V U3c TL074 10 9 8 R2 1K R3 1K R8G 100 K R23b 1 M 8 8 8 1 6 5 2 3 1 5 6 1 7 1 4 3 1 4 3 C17 18uf C15 1uf C14 047uf C13 022uf 400 Hertz C6 0022uf 200 Hertz 100 Hertz C10 01uf C8 0047uf R8a 100K 5V 1 3 5 6 7 2 R7 14 3K 1 R4b 3 3K R5b 3 3K R4c 3 3K R5c 3 3K R4d 3 3K R14 100 K R21d 1M R22c 1M R21c 1M R8c 100K R21A 1M R22a 1M R11 10...

Страница 14: ......

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