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magpie autoscan; mike
Topic Started: Tuesday, 27. October 2015, 19:25 (395 Views)
dazybaby
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hello all I need help in finding info / pics of what is needed to wire a standard mike to a magpie auto scan,has anyone go pics of inside a standard magpie mic I only can find a poor pic from 2010 can anyone help
thanks
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Mudslinger
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They use standard wiring but you need to add a capacitor into the audio wire somewhere, normally between the mic element and the wire going down inside the lead otherwise they change channel when you TX.
1µF had been mentioned as a capacitor value, but you may need to experiment slightly.

Wiring here for the MIC plug, ignore the D marking if you have no buttong on the MIC

http://www.thunderpole.co.uk/microphone-wiring-magpie.html
Edited by Mudslinger, Tuesday, 27. October 2015, 19:37.
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dazybaby
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Mudslinger
Tuesday, 27. October 2015, 19:35
They use standard wiring but you need to add a capacitor into the audio wire somewhere, normally between the mic element and the wire going down inside the lead otherwise they change channel when you TX.
1µF had been mentioned as a capacitor value, but you may need to experiment slightly.

Wiring here for the MIC plug, ignore the D marking if you have no buttong on the MIC

http://www.thunderpole.co.uk/microphone-wiring-magpie.html
ive wired a standard mike and as you say when I key up it scans tried for hrs trying to work it out, so the capacitor wires off the mike element then to where?
thanks
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Mudslinger
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dazybaby
Tuesday, 27. October 2015, 23:27
Mudslinger
Tuesday, 27. October 2015, 19:35
They use standard wiring but you need to add a capacitor into the audio wire somewhere, normally between the mic element and the wire going down inside the lead otherwise they change channel when you TX.
1µF had been mentioned as a capacitor value, but you may need to experiment slightly.

Wiring here for the MIC plug, ignore the D marking if you have no buttong on the MIC

http://www.thunderpole.co.uk/microphone-wiring-magpie.html
ive wired a standard mike and as you say when I key up it scans tried for hrs trying to work it out, so the capacitor wires off the mike element then to where?
thanks
Just put a capacitor between the mic element and one of the wire which are now attached to it. It shouldnt matter which.
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dazybaby
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Mudslinger
Wednesday, 28. October 2015, 11:25
dazybaby
Tuesday, 27. October 2015, 23:27
Mudslinger
Tuesday, 27. October 2015, 19:35
They use standard wiring but you need to add a capacitor into the audio wire somewhere, normally between the mic element and the wire going down inside the lead otherwise they change channel when you TX.
1µF had been mentioned as a capacitor value, but you may need to experiment slightly.

Wiring here for the MIC plug, ignore the D marking if you have no buttong on the MIC

http://www.thunderpole.co.uk/microphone-wiring-magpie.html
ive wired a standard mike and as you say when I key up it scans tried for hrs trying to work it out, so the capacitor wires off the mike element then to where?
thanks
Just put a capacitor between the mic element and one of the wire which are now attached to it. It shouldnt matter which.
thanks simon I get a capacitor of the value u stated what about voltage or dosnt matter this then fits in line with the audio wire off the element, I let you know how I get on
many thanks for your help not a lot of info about these radios
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Mudslinger
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The capacitor voltage shouldn't matter too much as it is only carrying voltage from the mic element which is tiny.

They are certainly interesting radios. I have one here that I inherited from a friend who passed away.

Sadly it is a bit rough, but it does work ok.

The buttons on the front of them wear out quite easily, and if the channel display stops working then you are in trouble.
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dazybaby
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just read the original add when they were new 120.00 I remember a old boy had one with a sigma 4 when I was at school and blow me away 35 yrs later I can afford one, has yours got the mike or a converted one,
if yes to any of the above would it be possible for some pics of inside im running out of things to read on google now.
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Mudslinger
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To be honest, I can't find where the Mic is.

The original was smashed to bits, and it was running a converted one.

I think it was an old Danita Dynamic type, with a capacitor as mentioned above.

To be honest it rarely gets used as the multimode stuff is more versatile.

I think there was a thread on Transmission1 about Mic wiring for them, but I am no 100% sure.
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Mudslinger
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You may need to sign up to view it.

http://www.transmission1.eu/viewtopic.php?f=2&t=16186&p=131486&hilit=magpie+microphone+wiring#p131486
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dazybaby
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Mudslinger
Wednesday, 28. October 2015, 22:14
cheers simon just seen it that's the pic of the mike I saw just cant work it out goes blocky when I try to zoom in, I see the cap looks like something is going on at bottom left of mike may be just connectors, I keep on looking and will let you know if I come up with anything thank you for your advice will buy some caps tomm have a play
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Mudslinger
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Have you got any other old radios or electrical items you could nick a capacitor from?

Having said that Craplins will sell you some pretty cheap.
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dazybaby
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Mudslinger
Wednesday, 28. October 2015, 22:29
Have you got any other old radios or electrical items you could nick a capacitor from?

Having said that Craplins will sell you some pretty cheap.
thanks simon put the cap inline with mic element and audio wire and it works the only thing it does is when you first turn on the radio and key the mic it drops down a channel but only on the first key after turn on,i did try to wire a echo unit last night but yes it wouldn't work need to wire it on another radio to see if the unit works, but now I can transmit with audio without it scanning.
thank you for your advice these are great sites
cheers darren
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Mudslinger
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No worries mate.

Just a thought, try sticking an identical capacitor into the other mic wire as well. That might stop it changing channel after turning on.
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