| Author |
Message |
    
Keithinatlanta
Intermediate Member
Username: Keithinatlanta
Post Number: 336
Registered: 3-2003
| | Posted on Wednesday, August 04, 2004 - 10:09 pm: | 
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Why on my uniden grant CB ssb, it has a 5 wire pin where as I have seen these export radios with ssb and yet they only have 4 pins on the mike. Just curious. Thanks.
Keith
CEF 150 |
Tech808
Moderator
Username: Tech808
Post Number: 3204
Registered: 8-2002
| | Posted on Wednesday, August 04, 2004 - 10:14 pm: |
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Keith,
Most radio Manufacturers are going to the Standard 4 Pin Cobra/Uniden mic wiring to make things a Lot easier to use different Mics with out re-wiring them for 5 Pin.
I dont think I even have a 5 pin radio I use anymore but in case I do I have the 5 to 4 pin Mic Adapters for them.
And I use the 6 pin to 4 pin Mic Adapters on the Saturn Turbo and 2995DX & 2970DX.
Lon
Tech808
CEF808
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Yankee
Intermediate Member
Username: Yankee
Post Number: 177
Registered: 7-2003
| | Posted on Thursday, August 05, 2004 - 12:16 am: |
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Keith, pin 4 is the keying ground wire between transmit and receive. With a 4 wire microphone you don't use pin 4, as pin 2 shield is also grounded. Just so you know if you ever wire a microphone for the Grant or for that matter any Uniden or Cobra that has a 5 pin plug.
Pin 1 is audio, most times this is the white wire.
Pin 2 is shield. most times this is the bare copper wire wrapped around the audio wire.
Pin 3 is receive, black wire on most microphones except Turner and with Turner the receive wire is red.
Pin 4 is the floating ground and most cases on an Astatic 6 wire microphone this wire is blue.
Pin 5 is transmit, most times this wire is red, again except for Turner and with Turner the transmit wire is black.
Hope this is of some help.
73, Carl CEF-357 |
Yankee
Intermediate Member
Username: Yankee
Post Number: 178
Registered: 7-2003
| | Posted on Thursday, August 05, 2004 - 8:48 am: |
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For any of you folks that need to know, this microphone wiring is from memory and not any book. I have been doing microphone wiring for 40 plus years and I can cross any microphone to any radio all from memory. Feel free to ask.
73, Carl CEF-357 |
Keithinatlanta
Intermediate Member
Username: Keithinatlanta
Post Number: 337
Registered: 3-2003
| | Posted on Thursday, August 05, 2004 - 9:53 am: |
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Thanks guys. I just always wondered why it took five wires sometimes versus four wires.
keith |
Yankee
Intermediate Member
Username: Yankee
Post Number: 179
Registered: 7-2003
| | Posted on Thursday, August 05, 2004 - 2:52 pm: |
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PP1616: This microphone you have asked about was not easy to cross, because it is an amateur radio microphone that sells for $100.00. So be very carefull with this nice looking microphone.
OK, here goes nothing.
Pin 1 is shield braided copper, now this microphone has 2 more ground wires and from what I'm thinking will need to also go on pin 1, these are the blue and gray wires.
Pin 2 is audio and this wire should be the red wire.
Pin 3 is transmit and should be the black wire.
Pin 4 is receive and should be the brown wire.
Now if my research is correct and no one has messed with the wiring inside the microphone, you should end up with 3 extra wires that will need no connection, because 2 of these are the frequency up and down and the third wire is for an 8 volt line for amateur radio use. You will have to tape off these 3 wires and not just cut them so they don't touch any other wire.
It took me over an hour just to research this microphone, and as I said, if no one has messed around inside the microphone, this should work.
Hope this is of some help.
73, Carl, CEF-357 |
Davesmeg
Junior Member
Username: Davesmeg
Post Number: 16
Registered: 3-2004
| | Posted on Thursday, August 05, 2004 - 3:46 pm: |
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The only radio I had that used all 5 pins was a Kernow (midland) with channel up/down on the mic. |
Yankee
Intermediate Member
Username: Yankee
Post Number: 180
Registered: 7-2003
| | Posted on Thursday, August 05, 2004 - 6:23 pm: |
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Microphone is the MFJ-299 and wire to a Galaxy 88, I have already called MFJ for what information I needed to cross it to the Galaxy 88. Like I said I've only been doing microphones for forty plus years and have been a bench technician for a few years when I was able to work. but now I'm health related disabled.
73, Carl, CEF-357 |
Bc910
New member
Username: Bc910
Post Number: 5
Registered: 7-2004
| | Posted on Friday, August 06, 2004 - 12:17 am: |
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Even though the element ground and the shield are seperate in the mic, aren't they tied together in the Grant soon after the plug any way?
BC |
Yankee
Intermediate Member
Username: Yankee
Post Number: 183
Registered: 7-2003
| | Posted on Friday, August 06, 2004 - 5:37 am: |
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BC910, I just checked the Sams photofacts for the Grant and the element ground is tied to the shield inside the microphone, Had me thinking on that question for a minute.
73, Carl CEF-357 |
Pp1616
Intermediate Member
Username: Pp1616
Post Number: 117
Registered: 2-2004
| | Posted on Friday, August 06, 2004 - 12:51 pm: |
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hey guys thanks alot ill have to try it out and get back to u asap. thanks for the work u put in to finding the info.. |
Bc910
Junior Member
Username: Bc910
Post Number: 10
Registered: 7-2004
| | Posted on Friday, August 06, 2004 - 9:21 pm: |
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Yankee, I always laugh at that, why have 2 wires when, essentually thay are 1? :P |
Yankee
Intermediate Member
Username: Yankee
Post Number: 185
Registered: 7-2003
| | Posted on Friday, August 06, 2004 - 9:58 pm: |
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PP1616: After looking at the manual which I forgot was on the MFJ web I think the MFJ technician didn't know completely what he was talking about unless the manual is wrong. he went and got a cable for Kenwood and gave me the color code from that. but the manual shows different from the cable. he did tell me that pin 6 for kenwood is the brown wire. I own a Kenwood and know for a fact that pin6 is a receive wire, so what I was able to come up with should work.
73, Carl CEF-357 |
