Re: [Elecraft] K3: Problem with CM-500 plugged into front panel through AD1K
This is really a VERY simple problem with a very simple solution. You buy a mic connector that mates with the K3 mic connector. You buy a cable-mount female 1/8-in RTS jack. May make a short adapter cable using a short piece of single conductor-shielded cable, like RG58. On one end, you solder the tip of the RTS jack to the center conductor and the sleeve of the RTS jack to the cable shield. On the other end, you wire the center conductor to the mic input pin of the K3, and you wire the cable shield to the shell of the mic connector. That's it! Two connectors, a short piece of coax, and a soldering iron. Another simple solution is a pre-made cable from R/S or equivalent with a female TRS jack on one end. Cut the cable, wire the end from the TRS jack to a connector that mates with the K3 mic jack. Ham stores sell these connectors. The Power Point on my website about Ham Interfacing lists the part numbers of good TRS jacks and a good place to buy them. This is ham radio, not CB radio or high futility A/V. Hams study equipment manuals to learn connector pin-out, they have soldering irons and make their own cables. 73, Jim K9YC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3: Problem with CM-500 plugged into front panel through AD1K
Does anyone have any ideas why my Yamaha CM-500 microphone won't work when plugged into the front of the K3. I am using the Kenwood AD1K adapter and I have the firmware set to select the front panel, low gain, with bias on (FP.L bIAS). The CM-500 headphones are plugged into the Phones jack on the front of the K3 and work fine. The CM-500 mic plug (grey) is plugged into the corresponding jack on the AD1K. When I press my footswitch, the K3 goes into transmit but there is no audio when I speak into the CM-500's microphone. I have tried the footswitch plugged in both on the back of the K3 and into the AD1K footswitch jack and it works fine (puts the K3 into transit) in both cases. When plugged into the rear Phone and Mic jacks on the K3, the CM-500 works like it should. In that case I have the firmware set to RP.L bIAS.and both the CM-500 microphone and headphones work fine, so I'm quite sure the CM-500 is not the culprit. It almost seems like the AD1K is the problem. This must be something simple, but I am stuck. Any suggestions much appreciated. Thanks Stan - K6VWE __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: Problem with CM-500 plugged into front panel through AD1K
On 1/21/2014 1:14 PM, Stan Rowe wrote: It almost seems like the AD1K is the problem. My guess is that the adapter is not wired properly. 73, Jim K9YC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: Problem with CM-500 plugged into front panel through AD1K
Use an Ohm meter and see if pin of the Foster plug is connected to the center pin of the 3.5mm jack on the AD1-K (DC connection). It is entirely possible that the adapter has a blocking capacitor as the AD1-K was designed for use with Heil's dynamic microphones which do not want DC on the mic element. 73, ... Joe, W4TV On 1/21/2014 4:14 PM, Stan Rowe wrote: Does anyone have any ideas why my Yamaha CM-500 microphone won't work when plugged into the front of the K3. I am using the Kenwood AD1K adapter and I have the firmware set to select the front panel, low gain, with bias on (FP.L bIAS). The CM-500 headphones are plugged into the Phones jack on the front of the K3 and work fine. The CM-500 mic plug (grey) is plugged into the corresponding jack on the AD1K. When I press my footswitch, the K3 goes into transmit but there is no audio when I speak into the CM-500's microphone. I have tried the footswitch plugged in both on the back of the K3 and into the AD1K footswitch jack and it works fine (puts the K3 into transit) in both cases. When plugged into the rear Phone and Mic jacks on the K3, the CM-500 works like it should. In that case I have the firmware set to RP.L bIAS.and both the CM-500 microphone and headphones work fine, so I'm quite sure the CM-500 is not the culprit. It almost seems like the AD1K is the problem. This must be something simple, but I am stuck. Any suggestions much appreciated. Thanks Stan - K6VWE __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: Problem with CM-500 plugged into front panel through AD1K
Stan, Try a test - put a bare stereo plug into the adapter and check with your ohmmeter to see if there is continuity between the ring and the shell of the plug. If so, that is the reason - the adapter is using a mono jack and the CM500 has a stereo plug. The tip and ring of the CM500 mic plug are connected together, so when plugged into a mono jack, the audio is shorted to the shell. 73, Don W3FPR On 1/21/2014 4:14 PM, Stan Rowe wrote: Does anyone have any ideas why my Yamaha CM-500 microphone won't work when plugged into the front of the K3. I am using the Kenwood AD1K adapter and I have the firmware set to select the front panel, low gain, with bias on (FP.L bIAS). The CM-500 headphones are plugged into the Phones jack on the front of the K3 and work fine. The CM-500 mic plug (grey) is plugged into the corresponding jack on the AD1K. When I press my footswitch, the K3 goes into transmit but there is no audio when I speak into the CM-500's microphone. I have tried the footswitch plugged in both on the back of the K3 and into the AD1K footswitch jack and it works fine (puts the K3 into transit) in both cases. When plugged into the rear Phone and Mic jacks on the K3, the CM-500 works like it should. In that case I have the firmware set to RP.L bIAS.and both the CM-500 microphone and headphones work fine, so I'm quite sure the CM-500 is not the culprit. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: Problem with CM-500 plugged into front panel through AD1K
Make pin in the first sentence pin 1 ... 73, ... Joe, W4TV On 1/21/2014 5:07 PM, Joe Subich, W4TV wrote: Use an Ohm meter and see if pin of the Foster plug is connected to the center pin of the 3.5mm jack on the AD1-K (DC connection). It is entirely possible that the adapter has a blocking capacitor as the AD1-K was designed for use with Heil's dynamic microphones which do not want DC on the mic element. 73, ... Joe, W4TV On 1/21/2014 4:14 PM, Stan Rowe wrote: Does anyone have any ideas why my Yamaha CM-500 microphone won't work when plugged into the front of the K3. I am using the Kenwood AD1K adapter and I have the firmware set to select the front panel, low gain, with bias on (FP.L bIAS). The CM-500 headphones are plugged into the Phones jack on the front of the K3 and work fine. The CM-500 mic plug (grey) is plugged into the corresponding jack on the AD1K. When I press my footswitch, the K3 goes into transmit but there is no audio when I speak into the CM-500's microphone. I have tried the footswitch plugged in both on the back of the K3 and into the AD1K footswitch jack and it works fine (puts the K3 into transit) in both cases. When plugged into the rear Phone and Mic jacks on the K3, the CM-500 works like it should. In that case I have the firmware set to RP.L bIAS.and both the CM-500 microphone and headphones work fine, so I'm quite sure the CM-500 is not the culprit. It almost seems like the AD1K is the problem. This must be something simple, but I am stuck. Any suggestions much appreciated. Thanks Stan - K6VWE __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: Problem with CM-500 plugged into front panel through AD1K
The AD1K has a DC blocking cap built in. Plug it in the rear jack or use the battery box provided with the CM500 to provide bias. ...bill nr4c Sent from my Verizon Wireless 4G LTE DROID Stan Rowe shrt...@chartermi.net wrote: Does anyone have any ideas why my Yamaha CM-500 microphone won't work when plugged into the front of the K3. I am using the Kenwood AD1K adapter and I have the firmware set to select the front panel, low gain, with bias on (FP.L bIAS). The CM-500 headphones are plugged into the Phones jack on the front of the K3 and work fine. The CM-500 mic plug (grey) is plugged into the corresponding jack on the AD1K. When I press my footswitch, the K3 goes into transmit but there is no audio when I speak into the CM-500's microphone. I have tried the footswitch plugged in both on the back of the K3 and into the AD1K footswitch jack and it works fine (puts the K3 into transit) in both cases. When plugged into the rear Phone and Mic jacks on the K3, the CM-500 works like it should. In that case I have the firmware set to RP.L bIAS.and both the CM-500 microphone and headphones work fine, so I'm quite sure the CM-500 is not the culprit. It almost seems like the AD1K is the problem. This must be something simple, but I am stuck. Any suggestions much appreciated. Thanks Stan - K6VWE __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: Problem with CM-500 plugged into front panel through AD1K
Bill, Are you certain about that? Bob Heil has told me in the past that none of his adapters have blocking capacitors. 73, Don W3FPR On 1/21/2014 7:50 PM, bill conkling wrote: The AD1K has a DC blocking cap built in. Plug it in the rear jack or use the battery box provided with the CM500 to provide bias. ...bill nr4c __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: Problem with CM-500 plugged into front panel through AD1K
Well, I sure thought I read it. Mind isn't what it used to be. I'll go back to sleep. ...bc Sent from my Verizon Wireless 4G LTE DROID Don Wilhelm w3...@embarqmail.com wrote: Bill, Are you certain about that? Bob Heil has told me in the past that none of his adapters have blocking capacitors. 73, Don W3FPR On 1/21/2014 7:50 PM, bill conkling wrote: The AD1K has a DC blocking cap built in. Plug it in the rear jack or use the battery box provided with the CM500 to provide bias. ...bill nr4c __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
