Question about Astatic 636L Noise Canceling Microphone Microphone

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Teardrop - icom 706mkII

Can someone help me with the wiring please,dont want to muck it up.

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  • robbo h Apr 14, 2008

    im trying to wire up my astatic teardrop to my 706 mkll ive got the mike exstention that came with the 706 but it has no plug on the end can somebody help me with this simple task

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Http://homepage.ntlworld.com/rg4wpw/astaticbook.pdf

Posted on Jun 16, 2008

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Heil icm plug wiring diagram


The Heil "ICM" microphone is designed to be used with certain Icom brand ham radios. These have a 8-pin round plug. Describing the pinout to you will depend upon your perspective, whether you are looking at it from the microphone plug itself, or the microphone socket on the front of the radio. Therefore, from the perspective of looking at the mic plug on the end of the mic cable, note that there is a notch or dimple in the plug that also lines up with the screw. Going clockwise from the notch, the pins are numbered 1 thru 7. Pin #8 is the center pin.
Pin 1 = mic input
Pin 5 = Push-to-talk (PTT)
Pin 6 = PTT ground
Pin 7= Mic ground

From the standpoint of an Icom transceiver, the remainder of the mic connector pins are as follows:
pin 2 = +8 volts DC (output from the radio)
pin 3 = frequency control up/down
pin 4 = squelch switch
pin 8 = audio output (level varies w/vol control)
Hope this helps

Jan 03, 2014 | Heil Sound Microphones

1 Answer

I bought a new logic unit (front face) of Icom F121 and it needs to be restored. How do you restore a logic unit for the Icom F121?


1- You have to to "Reserve" mode.2- Change Set Mode Access: Inhibit to Enable3- Common>>Secutity Change Set Mode Access : Inhibit to Enable4- Enter RX TX frequency and write to the radio.
or you can download version Rev 1.7 from here:
http://www.two-way-radio-tools.com/icom-softwares.html
http://www.two-way-radio-tools.com/icom-radio.html

Aug 27, 2010 | ICOM Informatique IC-F121 VHF 136-174MHz...

1 Answer

When using the OPC617 external cable, what solder pads need jumpered for PTT and mic audio?


To use OPC-617 option cable:1- open your CS-F100 Rev 1.7, read your radio.2- click on Common >> Expert >>EPTT/FTSW change to EPTT, 3- On the main board , look into the left side of the board you see pad D, solder ittogether, if you use pad F, you shou.ld put a 47K ohm resistor.You can follow this link for your pin out connection.http://www.two-way-radio-tools.com/icom-mc1700-mdc.html
and download ver sion Rev 1.7 from herehttp://www.two-way-radio-tools.com/icom-softwares.html
HP

Jun 04, 2010 | ICOM Informatique IC-F121 VHF 136-174MHz...

1 Answer

How do I reset the F221 to factory settings. I cloned the unit with V1.6 of the programming software with updates that included turning on the user start password and now the box will not communicate with...


F121 VHF, F221 UHF they both use the latest Version 1.7.
For F121 Factory default as follows:Open your CS-F100 software, enter RX TX frequency below, and write to the radio.Ch1: 136.100 MHzCh2: 155.100 MHzCh3: 173.900 MHz
For F221 Enter RX TX frequency belowCh1: 440.000MHzCh2: 460.000MHzCh3: 489.000MHz, then write to your radio
Or you check from this site:http://www.two-way-radio-tools.com/icom.html
HP

Feb 04, 2010 | ICOM Informatique IC-F121 VHF 136-174MHz...

1 Answer

ED 8000


You need to replaced the "voice coil". that thing that youve been desoldering and soldering is the voice coil. It has two wires- white and black. it is already grounded and need to be replace (the fact that it humms..). my company distribute wow magic sing here in Philippines and we can easily repair that.

Dec 25, 2008 | Magic (ED8000) Professional Microphone

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