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CM 3885
| | Posted on Sunday, February 02, 2003 - 10:45 pm: | 
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Enougn to want to go out and get a 5th of JD and a pack of smokes(and i dont smoke!)
How the heck does it wire to a 5 pin Cobra 142 GTL?????????? I cant seem to get it tow work. Either it sqeals on TX or it will transmit but no receive or it will tx but receive when i key up..... ARRGGHH! And ive messed with it for 2 hours!!! Im about to give up. |
Moderator558
| | Posted on Sunday, February 02, 2003 - 11:03 pm: |
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http://www.copperelectronics.com/mics/Cobra.html |
CM 3885
| | Posted on Sunday, February 02, 2003 - 11:07 pm: |
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Problem is my plus 2 has the old old 4 wire the red black shield and white but to compound problems someone rewired the insides of the mike!!!!! :-( |
CM 3885
| | Posted on Sunday, February 02, 2003 - 11:16 pm: |
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OOOKKKKK I finally got it now.
I hat to wire it by the following because some joker rewired the insides.
1.white
2.shiled
3.red
4. NC
5. black.
it works ok but i get a VERY loud POP when i unkey quickly... |
2600
| | Posted on Monday, February 03, 2003 - 12:38 am: |
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The fifth (missing) wire is a separate ground connection used for JUST the Transmit/Receive switch, and is not connected to the OTHER ground pin, meant for the audio ground ALONE. Separating the two ground circuits made life easier for the designers of this generation of SSB radios. If you tie them together by jumping pin 2 to pin 4, or if you use JUST pin 2 or JUST pin 4, you risk a couple of kinds of funny noise. A four-wire mike is also missing a third switch contact that disconnects the audio wire on receive. The +2 mike has continuity from the audio wire to ground through its "level" control at all times. The later "6-wire" power mikes not only have the second, isolated keying ground wire, but the additional switch section that opens the circuit on your audio wire when the PTT is released. If you just unkey slowly, it will minimize the POP. Short of modifying the mike switch to accept the 5-wire cord with the separate "keying-only" ground AND adding a third switch section to unhook the audio wire on receive, it sounds like what you have is as good as it gets. Somebody (else) should put up a "Four-wire mike on a five-pin radio" web page. This one just keeps coming up.
73 |
CM 3885
| | Posted on Monday, February 03, 2003 - 12:53 am: |
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Well now i have another oddball wierdo problem. When i turn up the recieve volume the radio makes a funny squeal on receive if i run the volume more than cracked open on the radio!!! AGH! I think ill just run my silver eagle and forget the turner for now.. Funny thing is i tried to wire my plus 3 and have had the very same problems.... Ah well. Ill just keep them in my cabinet to look at nice an' pretty since i cant use them on my 142 GTL or i guess i can -ATTEMPT- (read, more stress for me!) to wire them up to my ranger AR 3500 since it has a 4 pin plug that i installed. |
2600
| | Posted on Tuesday, February 04, 2003 - 12:43 am: |
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The AR3500 is a "three-wire" radio that just doesn't care about separate grounds. The receiver side will also not care. Turner used to sell a "conversion kit" that would turn a plus three into a "Plus 3B". It had the additonal switch contacts, and longer screws to stack them onto the original switch leaves. Don't think it came with a 6-wire cord, though. You had to come up with that separately. The Turner "B" model mikes were built with the 6 wires, and additional switch functions from the factory. Kinda like the difference between the four-wire "8" and six-wire "9" model D-104 mikes. Turner and Astatic went to the 6-wire cord and fancier switch both around the same time in the late 70's.
There is ONE way to do this that I neglected to mention. You take a Roger Beep board that has a relay and cut the foil trace to the ground pin on the relay. Your separate "keying" ground wire comes off of mike socket pin 4 and goes to the relay pin that you just cut loose from ground. The receive wire comes off of pin 3, the transmit wire comes off pin 5, and they go to the "R" and "T" pins on the beep board. The black wire on the beep board goes to pin 2 on the mike socket. Jump pin 2 to pin 4 behind the mike jack, so your old mike will still work, (or just change it to a 4 pin). This restores the "separate" ground connections and turns the radio into a "three pin", audio, ground and transmit. It's the one dependable option I can offer a customer who just LOVES his old TUG-8 Chicken Choker. It's not the cheap option, but it does cure the odd noises on both transmit and receive, every time.
73 |
CM 3885
| | Posted on Tuesday, February 04, 2003 - 6:55 am: |
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Yeah but my plus 3 works great on my 3500 so no biggie there. I think for now ill keep my silver eagle on my 142 GTL and save some frustations and stress.... LOL!!!! |
2600
| | Posted on Tuesday, February 04, 2003 - 11:42 pm: |
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Hey, at least the Silver Eagle has the marbles to do the whole job. 4-pin "conversions" on the 5-pin SSB radios are getting more popular all the time. It's easy to see why.
73 |
CM 3885
| | Posted on Wednesday, February 05, 2003 - 4:05 pm: |
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Every turner mike i have ive tried to wire to my 142 GTL and i have various odd problems when i do.. is there a way i can modify the plug from a 5 pin to a 4 pin??? |
Rightwing
| | Posted on Wednesday, February 05, 2003 - 10:38 pm: |
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wanna sell the plus 2? let me know. |
Tech808
| | Posted on Thursday, February 06, 2003 - 8:20 pm: |
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CM 3885,
Check out the link below for the mic connectors that will allow you to connect a 4 pin Mic to a 5 pin plug.
http://www.copperelectronics.com/cgi-bin/product_display.cgi?categories=MIC-ACCESSORIES
Hope this helps.
Lon
Tech808
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Devildog
| | Posted on Friday, February 07, 2003 - 10:47 am: |
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CM,
My +2 use to pop also until I cleaned the contacts. Also the connectors Tech 808 has a link to are great. I got all my mikes wired for 4 pin and have connectors for every radio.  |
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