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Hey everyone, I'm looking at options for a "real" microphone and ran across this one: It's got an 3 wire electret mic, not sure about the circuit it has. Will I need to bypass most of that to use it with the BITX40? Or should I gut it and put in the mic that came with the BITX40? Thanks a lot for any recommendations.? --
Ryan Flowers KC7RYS?
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Use a small plastic box that feels like a comfortable mic, and put the mic poking out of the face of it, and the button on the side. That one from Banggood has 8 pins. You would only need 4, two for the mic wires, and two for the button wires. And it's just wasteful to buy a mic only to rip it's guts out for a downgrade. ?Look for a small picture hanging parts box in a gift type tool box. Or ask a woman you know for something like that used for cosmetics. Or look for a small project enclosure box that looks like a small radio microphone. Here is an example of someone's photo in the emailed photos folder on this site. Otherwise get the cheapest Baofeng hand mic and hack it. It also has a speaker in it. https://s3-us-west-1.amazonaws.com/groupsioattachments/5062/4403366/22283/0?AWSAccessKeyId=AKIAJECNKOVMCCU3ATNQ&Expires=1487832161&Signature=YcUJN8%2B0k4Z2LWBO6SO35s9qEkE%3D
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On Wed, Feb 22, 2017 at 10:46 pm, John Smith wrote: Use a small plastic box that feels like a comfortable mic, and put the mic poking out of the face of it, and the button on the side. That one from Banggood has 8 pins. You would only need 4, two for the mic wires, and two for the button wires. And it's just wasteful to buy a mic only to rip it's guts out for a downgrade. ?Look for a small picture hanging parts box in a gift type tool box. Or ask a woman you know for something like that used for cosmetics. Or look for a small project enclosure box that looks like a small radio microphone. Here is an example of someone's photo in the emailed photos folder on this site. Otherwise get the cheapest Baofeng hand mic and hack it. It also has a speaker in it.
?I considered doing that. The biggest thing is that I want one of those mic cables because they coil up, and currently mine does not. Perhaps I just need to find a better cable for the one I have. The coiled cords are $10 everywhere I've looked, and this whole mic is $10. And it's not wasteful if it serves my purpose. I know I'll have to source an 8 pin connector for it- ?else buy a mating 4 pin connector set and replace them, which I could easily do. My concern isn't whether this is a good idea. My concern is- is there any reason it won't work?
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Ryan Flowers KC7RYS?
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Why not this one:
Rich KC8MWG
On Thursday, February 23, 2017 1:58 AM, Ryan Flowers <geocrasher@...> wrote:
On Wed, Feb 22, 2017 at 10:46 pm, John Smith wrote: Use a small plastic box that feels like a comfortable mic, and put the mic poking out of the face of it, and the button on the side. That one from Banggood has 8 pins. You would only need 4, two for the mic wires, and two for the button wires. And it's just wasteful to buy a mic only to rip it's guts out for a downgrade. ?Look for a small picture hanging parts box in a gift type tool box. Or ask a woman you know for something like that used for cosmetics. Or look for a small project enclosure box that looks like a small radio microphone. Here is an example of someone's photo in the emailed photos folder on this site. Otherwise get the cheapest Baofeng hand mic and hack it. It also has a speaker in it.
?I considered doing that. The biggest thing is that I want one of those mic cables because they coil up, and currently mine does not. Perhaps I just need to find a better cable for the one I have. The coiled cords are $10 everywhere I've looked, and this whole mic is $10. And it's not wasteful if it serves my purpose. I know I'll have to source an 8 pin connector for it- ?else buy a mating 4 pin connector set and replace them, which I could easily do. My concern isn't whether this is a good idea. My concern is- is there any reason it won't work?
--
Ryan Flowers KC7RYS?
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My mic cost me $0.87 to build from the parts that came with the B40. (See pix.) The mic cord is an old telephone cable from the house phone line that was lying around. While its construction is pretty obvious, details will be in the April, QRP Quarterly. The green stuff is large diameter shrink tubing that I got in a Dayton grab bag...it's so big I never thought I'd find a use for it. You never know...
Jack, W8TEE
From: Richard Andrew Knack via Groups.Io <ihc73scout2@...>
To: [email protected]
Sent: Thursday, February 23, 2017 4:45 AM
Subject: Re: [BITX20] Handheld Mic w/ PTT for BITX40
Why not this one:
Rich KC8MWG
On Thursday, February 23, 2017 1:58 AM, Ryan Flowers <geocrasher@...> wrote:
On Wed, Feb 22, 2017 at 10:46 pm, John Smith wrote: Use a small plastic box that feels like a comfortable mic, and put the mic poking out of the face of it, and the button on the side. That one from Banggood has 8 pins. You would only need 4, two for the mic wires, and two for the button wires. And it's just wasteful to buy a mic only to rip it's guts out for a downgrade. ?Look for a small picture hanging parts box in a gift type tool box. Or ask a woman you know for something like that used for cosmetics. Or look for a small project enclosure box that looks like a small radio microphone. Here is an example of someone's photo in the emailed photos folder on this site. Otherwise get the cheapest Baofeng hand mic and hack it. It also has a speaker in it.
?I considered doing that. The biggest thing is that I want one of those mic cables because they coil up, and currently mine does not. Perhaps I just need to find a better cable for the one I have. The coiled cords are $10 everywhere I've looked, and this whole mic is $10. And it's not wasteful if it serves my purpose. I know I'll have to source an 8 pin connector for it- ?else buy a mating 4 pin connector set and replace them, which I could easily do. My concern isn't whether this is a good idea. My concern is- is there any reason it won't work?
--
Ryan Flowers KC7RYS?
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Hey Ryan,? I took one of my old Yaesu HT speaker mics, and rewired it for the BITX40,? It has a Electret?mic element in it already, and a PTT.? I see on amazon.com you can pic up a speaker mic for $6-$15.? I say go for it, I like having the coiled cord also!
Jason N3YUG
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I like a coiled cord, too. However, unlike my base transceiver, when the rig weighs about a pound and I turn around mid-QSO to answer the phone only to see my B40 whiz by my head because of the spring-tension in the cord, that's when I went to a non-coiled cord.
Jack, W8TEE
From: Jason N3YUG <jbr13@...>
To: [email protected]
Sent: Thursday, February 23, 2017 10:45 AM
Subject: Re: [BITX20] Handheld Mic w/ PTT for BITX40
Hey Ryan,? I took one of my old Yaesu HT speaker mics, and rewired it for the BITX40,? It has a Electret?mic element in it already, and a PTT.? I see on amazon.com you can pic up a speaker mic for $6-$15.? I say go for it, I like having the coiled cord also!
Jason N3YUG
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I used a mic and jack from an old CB.? I replaced the mic element with the element supplied with the BitX.? I used the jack from the CB.?
On Thu, Feb 23, 2017 at 10:45 AM, Jason N3YUG <jbr13@...> wrote: Hey Ryan,? I took one of my old Yaesu HT speaker mics, and rewired it for the BITX40,? It has a Electret?mic element in it already, and a PTT.? I see on you can pic up a speaker mic for $6-$15.? I say go for it, I like having the coiled cord also!
Jason N3YUG
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I *just* bought (via eBay) two 'Beofeng' microphones.
They were US$2.89 each. One for my Beofeng (hey, it's cheap and works), and one to cut up for little home-brew rigs.
One worked perfectly, the other had a solder problem with the electret (easily fixed, see: ). These are handi-talkie mics, and speaker-mics to boot - so, you can cut off the little dual-plug and wire it up how you want.
PTT & mic only, or add the speaker in.
I purchased eBay item: 322313252027, but there at least a dozen other sellers. Here's the fix to the one that didn't work - I just shorted two solder points - apparently the trace is bad (do look at the bubbly PCB - I'm not saying this is great quality, but it works):
Mike Yancey, KM5Z
Dallas, Texas
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Thanks everyone, I sincerely appreciate the responses! Jack, I hadn't even considered the weight issue- thanks for bringing it up. I think a 4 conductor telephone cord will solve the problem and I'll just make a nicer looking handheld mic. I'll post what I come up with eventually. I'm still working on the case, too. Thanks again!
--
Ryan Flowers KC7RYS?
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Yep, as I scrolled down I saw Jack beat me to it. The telephone cord with four wires, and if you're slick you can put in a chassis mount jack. ?You also got a choice of colors and length with phone cord.
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A very long time ago, as a repeater user, I had a bell systems Trimline handset, and with very minor additions to the old HeahKit HW202 2 meter rig, it (the Trimline) worked as a mic, with DTMF pad.? If I remember right, I put a small pushbutton in the side, and the rest of the handset was unaffected- and I put 12V on the mic line.? It worked really well.
My point being that the telephone handset may be a nice speaker/mic.? It would benefit from the electret, but the speaker element probably would be very well suited.? And a PTT switch might be possible if ground are common- leaving one conductor open.
The RJ11 jack would need to be salvaged from the base
73 Larry KB3CUF (ex WB3INC)
On Thu, Feb 23, 2017 at 12:36 PM, Ryan Flowers <geocrasher@...> wrote: Thanks everyone, I sincerely appreciate the responses! Jack, I hadn't even considered the weight issue- thanks for bringing it up. I think a 4 conductor telephone cord will solve the problem and I'll just make a nicer looking handheld mic. I'll post what I come up with eventually. I'm still working on the case, too. Thanks again!
--
Ryan Flowers KC7RYS?
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A couple of Quid/Bucks for a CB hand microphone, But a DC blocking cap on the mic lead to it from the BITX-40 and away you go .. It couldn't be any problem easier, All this talk of buying boxes and switches to make your own when it's far cheaper , Easier to buy a CB type one ..
On Thu, 23 Feb 2017 at 6:00, Ryan Flowers <geocrasher@...> wrote: Hey everyone, I'm looking at options for a "real" microphone and ran across this one: It's got an 3 wire electret mic, not sure about the circuit it has. Will I need to bypass most of that to use it with the BITX40? Or should I gut it and put in the mic that came with the BITX40? Thanks a lot for any recommendations.? --
Ryan Flowers KC7RYS?
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As I remember the older phone cords were resistive. Check the end to end
resistance with a multimeter.
Raj
At 23/02/2017, Ryan Flowers wrote:
toggle quoted message
Show quoted text
Thanks everyone, I sincerely
appreciate the responses! Jack, I hadn't even considered the weight
issue- thanks for bringing it up. I think a 4 conductor telephone cord
will solve the problem and I'll just make a nicer looking handheld mic.
I'll post what I come up with eventually. I'm still working on the case,
too. Thanks again!
--
Ryan Flowers KC7RYS
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I cut off the end of my baofeng speaker mic off and got 4 wires.? Does anyone have any ideas how I could connect this to the radio?? The radio needs 2 leads for PTT, 2 for speaker, and 2 for the mic.
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Speakermic wiring shown here:
It looks as if one wire is common to PTT and mic, then one for
PTT "active" an a mic high. However, no idea as to wire colors.
toggle quoted message
Show quoted text
I cut off the end of my baofeng speaker mic off and
got 4 wires.? Does anyone have any ideas how I could connect this
to the radio?? The radio needs 2 leads for PTT, 2 for speaker, and
2 for the mic.
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Shields presumably
on at least some of those 4 wires in the Baofeng cable? Some
of the radio connections are likely grounds. link those up and
you should have enough.
toggle quoted message
Show quoted text
I cut off the end of my baofeng speaker mic off and
got 4 wires.? Does anyone have any ideas how I could connect this
to the radio?? The radio needs 2 leads for PTT, 2 for speaker, and
2 for the mic.
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IC-718 manual, page 8, has the pinout & internal circuit: http://www.icom.co.jp/world/support/download/manual/pdf/IC-718.pdf
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Since the Baofeng speaker mic has a ptt switch, you need to find out what wires are open and then connected when the ptt is pressed using your multimeter. You also may need to rewire all the way back to the speaker/mic with 6 wires. Baofeng uses two plugs with multi contacts. See this wiring diagram.
Sent from Mike's iPad WA1MAD
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I used an old CB rig and replaced the mic element with the one in the kit. ?
On Mar 15, 2017 8:30 AM, "Michael Davis" < maddmd818@...> wrote: Since the Baofeng speaker mic has a ptt switch, you need to find out what wires are open and then connected when the ptt is pressed using your multimeter. You also may need to rewire all the way back to the speaker/mic with 6 wires. Baofeng uses two plugs with multi contacts. See this wiring diagram.
Sent from Mike's iPad WA1MAD
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Marc Jones
Raj vu2zap