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Hello, solder-melters,
I'm experiencing constant clicking from the raduino when my microphone is plugged in. The display indicates it is switching from RX to TX continuously. When I disconnect the microphone, it stops. If I key up the PTT, the clicking stops and I am able to transmit. I can hear myself on a receiver, so the microphone is working. As soon as I let go of PTT, the radio continues to switch between RX and TX, clicking the whole time. I have re-soldered all connections to the jack, and also the microphone in an attempt to troubleshoot, but this resulted in no change.
I wired up the key jack for a straight key. When I key CW, I hear a continuous tone behind my dits, and when I cease transmitting, the tone continuous for about a second, then the raduino clicks and the radio returns to RX.
I'm not experienced and have no idea where to start troubleshooting. I've made sure all connections are solid, but I'm starting to wonder if this is a software issue. I am running version 1.08 of KD8CEC's firmware.
Any ideas? Thanks!
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Possibly you have ptt and ground reversed on your microphone connection, as I had same symptoms when I did. Disconnect ptt or ground to see if problem goes away.
If you are using the case from India, then check the front mounted hub board for solder bridges or poor connections.
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I had a similar situation.? It turned out to be my mic jack was slightly loose at the case (the mounting screw was snug but not super tight).? When I plugged the mic in, I was inadvertently (and unknowingly) twisting the entire jack clockwise and it was shorting the mic wiring on the pins against the LCD display assembly.? To correct the problem I rotated the jack away from the short, tightened the mounting screw, and (for good measure) placed some electrical tape between the jack wiring and the LCD display assembly.? Not sure if this will work for you but it did the trick for me.
Tom
AB7WT
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Y'all were correct about the ground connection and ptt being reversed. That problem is now fixed, but when I key up, there is a lot of squealing in addition to my voice coming out of the receiver I am using to test transmitting.
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Addendum to the above: It's not so much a squeal, more like a noise you'd hear on Space Invaders or Galaga or something. Sorry for the non-technical explanation, but I don't know what else to call it.
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Hi,
How many kilometers are between the receiver you are using for tests and the transmitter? If it's in the same room you don't stand a chance.
73,
Bill KU8H
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On 11/23/18 5:28 PM, KN4IYL wrote: Addendum to the above: It's not so much a squeal, more like a noise you'd hear on Space Invaders or Galaga or something. Sorry for the non-technical explanation, but I don't know what else to call it.
--
bark less - wag more
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Bill, you caught me. The receiver is about a foot away. Lesson learned, and thanks for everybody's input.
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Hi,
Are you familiar with WebSDR? Those are SDR receive stations that are shared over the web. You can find them in various places covering various parts of the spectrum. Multiple users can use each one of them at the same time on different frequencies and different modes. If you don't know about them you should look into them and play with them a little.
Some key features are:
They are not in the same room as your transmitter! Does that ring any bells? :)
You get some idea how well your transmitter and antenna are getting out various locations. When you look those up on the WebSDR site they tell your right where they are:)
They are not in the same location as your industrial QRM. If industrial noise is giving you trouble at your home location you might consider using one of these receivers at it's quieter remote location and using your transmitter at your home to work other stations you hear on the Web SDR receiver. Choose wisely. If your are using a Web based SDR that is shared from Timbuktu in central Africa from San Diego on 80 meter CW you will probably not work anything that station can hear even though you can hear it. Choose a station that is in your own region so that other hams you hear on the remote receiver have a chance of hearing your transmitter:) There may be some pleasant surprises.
73,
Bill KU8H
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On 11/23/18 6:46 PM, KN4IYL wrote: Bill, you caught me. The receiver is about a foot away. Lesson learned, and thanks for everybody's input.
--
bark less - wag more
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Bill,
Thanks for the tip! I've checked out but it never occurred to me to use it in that manner. I may have to try that.
?
73,
?
Jared KN4IYL
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I am currently in the same situation.? I have a simple lapel mic and every time I plug it in the rig goes into transmit mode, it's almost like there's a short.? I've attached the diagram from the BitX40 but it's not quite what I'm looking for.? Is there a good diagram for the uBitX Mic jack with PTT?? The diagrams I've seen don't specify if you're seeing the top or the bottom of the connector.
I've attached photos, probably too many, and hopefully someone from this awesome group and point out my error
Thanks, Jim? AE0BZ
On Fri, Nov 23, 2018 at 7:45 AM KN4IYL < kn4iyl@...> wrote: Hello, solder-melters,
I'm experiencing constant clicking from the raduino when my microphone is plugged in. The display indicates it is switching from RX to TX continuously. When I disconnect the microphone, it stops. If I key up the PTT, the clicking stops and I am able to transmit. I can hear myself on a receiver, so the microphone is working. As soon as I let go of PTT, the radio continues to switch between RX and TX, clicking the whole time. I have re-soldered all connections to the jack, and also the microphone in an attempt to troubleshoot, but this resulted in no change.
I wired up the key jack for a straight key. When I key CW, I hear a continuous tone behind my dits, and when I cease transmitting, the tone continuous for about a second, then the raduino clicks and the radio returns to RX.
I'm not experienced and have no idea where to start troubleshooting. I've made sure all connections are solid, but I'm starting to wonder if this is a software issue. I am running version 1.08 of KD8CEC's firmware.
Any ideas? Thanks!
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Jim
i would do some probing with a continuity checker (like your DVM) to see what is what with your construction.? if rig goes into transmit when plugging in your microphone, somehow it is making a connection to ground.? the matter at hand is there needs to a common connection between the mic audio return, and the unswitched end for PTT -- to allow suitable current flow for each function.? if you can tell which microphone connection is attached to the 'braid' this may solve your issue.? or try reversing PTT and ground in the wiring.?
now if somehow in your microphone wiring both PTT and common are simultaneously connected - then you would have a short in your microphone wiring.?
73 Curt
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Jim,
Does your lapel mike have a TRS (tip/ring/sleeve)?plug or
just TS(tip/sleeve).? If just a monaural TS plug it is shorting the PTT
lead to ground causing it to go into xmit. Just a thought. Also if it has a TRS
plug is the ring isolated from the TS.
?
Rick
KN4AIE
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Show quoted text
I am currently in the same situation.? I have a simple lapel
mic and every time I plug it in the rig goes into transmit mode, it's almost
like there's a short.? I've attached the diagram from the BitX40 but it's
not quite what I'm looking for.? Is there a good diagram for the uBitX Mic
jack with PTT?? The diagrams I've seen don't specify if you're seeing the
top or the bottom of the connector.
I've attached photos, probably too many, and hopefully someone from this
awesome group and point out my error
Thanks,
Jim?
AE0BZ
On Fri, Nov 23, 2018 at 7:45 AM KN4IYL < kn4iyl@...> wrote:
Hello, solder-melters,
I'm experiencing constant clicking from the
raduino when my microphone is plugged in. The display indicates it is
switching from RX to TX continuously. When I disconnect the microphone, it
stops. If I key up the PTT, the clicking stops and I am able to transmit. I
can hear myself on a receiver, so the microphone is working. As soon as I let
go of PTT, the radio continues to switch between RX and TX, clicking the whole
time. I have re-soldered all connections to the jack, and also the microphone
in an attempt to troubleshoot, but this resulted in no change.
I wired up the key jack for a straight key. When I key CW, I hear a
continuous tone behind my dits, and when I cease transmitting, the tone
continuous for about a second, then the raduino clicks and the radio returns
to RX.
I'm not experienced and have no idea where to start troubleshooting. I've
made sure all connections are solid, but I'm starting to wonder if this is a
software issue. I am running version 1.08 of KD8CEC's firmware.
Any ideas? Thanks!
|
Jim,
I have attached an image of the wiring of my microphone for reference. I had ordered extra jacks due to a much earlier construction mistake, so I had some extra to do this with. I wired the microphone to the tip connection and the ground, with the PTT switch connected to the ground lead in the middle. The other lead on the switch is wired to the ring connection in the jack. I connect it to the radio with a male to male plug you can commonly find at convenience stores. The radio side is wired purple to tip, orange to ring, and blue to ground. It looks like your connections are reversed as mine were initially.
Hope this helps, 73,
Jared KN4IYL?
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Also, an update to my initial post, the tone I experienced when keying cw was a result of poor construction practice. I had the resistor connected directly to the tip connection along with the blue wire. I backed it off, added a length of wire to the lead of the resistor and joined it with the blue wire on the tip connection. Everything seems fine now, and I buttoned her up for good measure.
Many thanks to this community, looking forward to making some QSOs and, more importantly, modifiying and learning.
73
Jared KN4IYL?
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