[Elecraft] MH2 Microphone issue
I have a K2 with the SSB option installed and I am having issues getting the MH2 microphone to work. I am currently using a Heil Pro-Set with the K2 and everything is working fine. I have checked the back of the microphone connector and everything appears to be connected properly. The 5.6k resistor is installed between pins 1 and 6 and all of the jumpers are installed. The PTT button on the MH2 works but my voice is not heard on a separate receiver. According to my manual I should be able to use the same microphone settings for the Mh2 and pro-set. Can someone help me out? -- View this message in context: http://elecraft.365791.n2.nabble.com/MH2-Microphone-issue-tp6064358p6064358.html Sent from the [K2] mailing list archive at Nabble.com. __ 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] MH2 Microphone issue
Do you also have a jumper on pin 6 of the microphone configuration header? You can check quickly by measuring for voltage at pin 6 of the microphone jack - it should be about 5 volts. You can check for proper soldering of the bias resistor by measuring for a similar voltage at mic jack pin 1. If your Heil ProSet uses a dynamic element, you may (or may not) be able to use it with the bias resistor in place. If there is no DC blocking capacitor, the mic element may sound funny due to the DC current through it. The Elecraft/Heil Proset-K2 uses an electret element, and the Heil ProSet-iC (Icom) does too (and those need bias), but as far as I know, the others use a dynamic element. 73, Don W3FPR On 2/25/2011 7:52 AM, KA1YMX wrote: I have a K2 with the SSB option installed and I am having issues getting the MH2 microphone to work. I am currently using a Heil Pro-Set with the K2 and everything is working fine. I have checked the back of the microphone connector and everything appears to be connected properly. The 5.6k resistor is installed between pins 1 and 6 and all of the jumpers are installed. The PTT button on the MH2 works but my voice is not heard on a separate receiver. According to my manual I should be able to use the same microphone settings for the Mh2 and pro-set. Can someone help me out? __ 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] MH2 Microphone issue
All of the jumpers are installed. I measured the voltage on pins 1 and 6 and the voltage is approximately 3.1 vdc. I can still use the K2 with the Pro-Set and it works fine. The MH2 does not work even though the KSB2 manual says the configuration is the same. -- View this message in context: http://elecraft.365791.n2.nabble.com/MH2-Microphone-issue-tp6064358p6064593.html Sent from the [K2] mailing list archive at Nabble.com. __ 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] MH2 Microphone issue
The 5v regulator U5 on the control board has an output of 3.0v. I disconnected the front panel from the control panel and the output is still around 3.0v. Do you think the lower voltage could affect the operation of the microphone? I also noticed there is an update to grounding the microphone jack. Could the lack of ground some how cause this? -- View this message in context: http://elecraft.365791.n2.nabble.com/MH2-Microphone-issue-tp6064358p6064638.html Sent from the [K2] mailing list archive at Nabble.com. __ 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] MH2 Microphone issue
The low voltage is probably your problem. I would think 3 volts is too low for the microphone element. I know 3 volts is too low for proper operation of the microprocessor, and since you have not said anything about other strange symptoms, I would first check your voltmeter. Do you read 5 volts or 3 volts at the output terminal of RF Board U8 - it should be 5 volts. If you read 3 volts at RF U8, try an different voltmeter. Is the regulator getting quite warm? If so, you may have a fault on the 5 volt line somewhere. If it is not heating up, the most likely reason is a bad regulator. 73, Don W3FPR On 2/25/2011 9:24 AM, KA1YMX wrote: The 5v regulator U5 on the control board has an output of 3.0v. I disconnected the front panel from the control panel and the output is still around 3.0v. Do you think the lower voltage could affect the operation of the microphone? I also noticed there is an update to grounding the microphone jack. Could the lack of ground some how cause this? __ 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] MH2 Microphone issue
I replaced the 5v regulator and the 5v line is now reading 5vdc. The MH2 still does not work. I also plugged in the Pro-Set and the pro-set works fine. Do you think the microphone could be broken? I have never used it before so I am not sure it works. -- View this message in context: http://elecraft.365791.n2.nabble.com/MH2-Microphone-issue-tp6064358p6065062.html Sent from the [K2] mailing list archive at Nabble.com. __ 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] MH2 Microphone issue
Yes, it is possible that your MH2 has a problem. Did you buy it used? In that case, someone may have re-wired the microphone plug for some other radio. 73, Don W3FPR On 2/25/2011 11:29 AM, KA1YMX wrote: I replaced the 5v regulator and the 5v line is now reading 5vdc. The MH2 still does not work. I also plugged in the Pro-Set and the pro-set works fine. Do you think the microphone could be broken? I have never used it before so I am not sure it works. __ 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] MH2 Microphone issue
I bought it directly from Elecraft. -- View this message in context: http://elecraft.365791.n2.nabble.com/MH2-Microphone-issue-tp6064358p6065182.html Sent from the [K2] mailing list archive at Nabble.com. __ 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] MH2 Microphone issue
I would say a faulty mic. is a very good possibility. I am on #3. The original mic worked properly for about 3 months. The replacement did not function at all but #3 seems to play just fine. I feel as though there must have been a bad batch Other than that issue the K3 and Elecraft's first quality service and support can not be beat Mike WB6CLZK3 #4522. -- Original Message -- From: KA1YMX natesm...@hotmail.com To: elecraft@mailman.qth.net Subject: Re: [Elecraft] MH2 Microphone issue Date: Fri, 25 Feb 2011 08:29:34 -0800 (PST) I replaced the 5v regulator and the 5v line is now reading 5vdc. The MH2 still does not work. I also plugged in the Pro-Set and the pro-set works fine. Do you think the microphone could be broken? I have never used it before so I am not sure it works. -- View this message in context: http://elecraft.365791.n2.nabble.com/MH2-Microphone-issue-tp6064358p6065062.html Sent from the [K2] mailing list archive at Nabble.com. __ 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 $65/Hr Job - 25 Openings Part-Time job ($20-$65/hr). Requirements: Home Internet Access http://thirdpartyoffers.juno.com/TGL3141/4d67eb609539558581fst01vuc __ 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] MH2 Microphone Issue
Hi mate,I do have the MH-2 and certainly is big and PTT swithc is little hard to press but it stays there even my thumb finger moves,I don't have that mechanical problem you have,I am sure some one on the group will come out with a solution and congratulations for your new K3,I am taking mine to a DXPedition to Peanut island here in South east FL,we will operating the CQ WW Contest in CW as W4K special call,73 AD4C For a refined ham it is compulsory to own a k3 --- On Thu, 5/27/10, Jeff Cochrane - VK4BOF vk4bof.elecr...@gmail.com wrote: From: Jeff Cochrane - VK4BOF vk4bof.elecr...@gmail.com Subject: [Elecraft] MH2 Microphone Issue To: elecraft@mailman.qth.net Date: Thursday, May 27, 2010, 2:08 AM G'day everyone! First of all, After having given my K3 its first HF hitout this last weekend for our (Myself - VK4BOF, Gary - VK4FD Dale - VK4DMC) mini dxpedition for the World Flora Fauna at Undara Lava Tubes National Park in North Queensland, Australia I must say that I am more than impressed with my new K3. It performed flawlessly and was a real pleasure to use, the MH2 microphone is however another matter. Whilst its transmitted audio quality is excellent it appears that you must be a 400lb gorilla to use the damned thing, the TX button is so stiff to use. :-) And even when you get the button in, it must be only barely making contact that as soon as you relieve any pressure at all from the button, the radio goes back to RX mode. Does anyone else have this issue? Jeff Cochrane VK4BOF Innisfail QLD Australia Elecraft K3 #4257 __ 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] MH2 Microphone Issue
Hi Jeff The button is a bit mushy lacking a positive action. Another problem that I have with the MH2 is its curly cord. The curly cord is so stiff that it pulls the radio if you try and stretch it a bit. It just does not have enough stretch, even if pulled a small amount. I like using a hand mic. What I suggest you do is try and getting an original Icom HM36 hand mic. This Icom mic sounds pretty good on the K3. It has a nice soft curly cord and the button has a nice positive smooth micro switch click. The current model HM36 is junk made in China, try and get an original Japanese made HM36 that came with the early Icom radios. Just make sure you throw the Icom radio in the bin and keep the mic! 73 John --- On Wed, 5/26/10, Jeff Cochrane - VK4BOF vk4bof.elecr...@gmail.com wrote: From: Jeff Cochrane - VK4BOF vk4bof.elecr...@gmail.com Subject: [Elecraft] MH2 Microphone Issue To: elecraft@mailman.qth.net Date: Wednesday, May 26, 2010, 7:08 PM G'day everyone! First of all, After having given my K3 its first HF hitout this last weekend for our (Myself - VK4BOF, Gary - VK4FD Dale - VK4DMC) mini dxpedition for the World Flora Fauna at Undara Lava Tubes National Park in North Queensland, Australia I must say that I am more than impressed with my new K3. It performed flawlessly and was a real pleasure to use, the MH2 microphone is however another matter. Whilst its transmitted audio quality is excellent it appears that you must be a 400lb gorilla to use the damned thing, the TX button is so stiff to use. :-) And even when you get the button in, it must be only barely making contact that as soon as you relieve any pressure at all from the button, the radio goes back to RX mode. Does anyone else have this issue? Jeff Cochrane VK4BOF Innisfail QLD Australia Elecraft K3 #4257 __ 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] MH2 Microphone Issue
Hi Paul What are your mods? Did you just use a capacitor to roll off the bass? Someone once told me that the Heil HC5 is sound transducer that was very common on PC motherboards. I lost the web link of the manufacturer, which is a pity since the HC5 seems to produce good audio on just about every radio that I have used. The only problem is that you cant buy the HC5 cartridge anymore. John --- On Wed, 5/26/10, paulb xtr348...@xtra.co.nz wrote: From: paulb xtr348...@xtra.co.nz Subject: Re: [Elecraft] MH2 Microphone Issue To: elecraft@mailman.qth.net Date: Wednesday, May 26, 2010, 10:53 PM The MH2 mic PTT may be getting caught in the rubber surround. It is easy to undo the cover. Note that the PTT button only fits one-way, there is a cut away slide which fits onto the switch. For my own use the mic insert had a tad to much bass, it has been slightly modded here to suit. regards Paul zl1ajy -- View this message in context: http://elecraft.365791.n2.nabble.com/MH2-Microphone-Issue-tp5106621p5107093.html Sent from the Elecraft mailing list archive at Nabble.com. __ 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] MH2 Microphone Issue
juergen wrote: Hi Paul What are your mods? Did you just use a capacitor to roll off the bass? Someone once told me that the Heil HC5 is sound transducer that was very common on PC motherboards. I lost the web link of the manufacturer, which is a pity since the HC5 seems to produce good audio on just about every radio that I have used. The only problem is that you cant buy the HC5 cartridge anymore. John Have you asked Heil at i...@heilsound.com mailto:i...@heilsound.com 73, Mike NF4L __ 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] MH2 Microphone Issue
Have you asked Heil Yes. Heil will no longer sell the bare elements. One must purchase a D-104 upgrade kit in order to get the element. In addition, Heil will not sell replacement clamshells for the original Proset mic boom for repair purposes. In spite of their claims, Heil do not care about customer service. The cost to repair a damaged ProSet is more than replacing it with a Yamaha CM-500 and the ProSet would have to be shipped to Heil rather than allow the user to make a relatively simple change of mic element and housing. 73, ... Joe, W4TV On 5/27/2010 9:54 AM, Mike wrote: juergen wrote: Hi Paul What are your mods? Did you just use a capacitor to roll off the bass? Someone once told me that the Heil HC5 is sound transducer that was very common on PC motherboards. I lost the web link of the manufacturer, which is a pity since the HC5 seems to produce good audio on just about every radio that I have used. The only problem is that you cant buy the HC5 cartridge anymore. John Have you asked Heil at i...@heilsound.commailto:i...@heilsound.com 73, Mike NF4L __ 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] MH2 Microphone Issue
Well durn! I saw that kit, but it didn't say which element it was. There's no way to order from their website either AFAICT. I needed some of the foam pads that go inside the Pro-Set ear muffs, and had to do a phone order. I now have the CM-500 on the K3 and the Pr0-Set on the backup PRO II. So the real downside of dealing with Elecraft is we can so easily get used to great customer service. :-P 73, Mike NF4L Joe Subich, W4TV wrote: Have you asked Heil Yes. Heil will no longer sell the bare elements. One must purchase a D-104 upgrade kit in order to get the element. In addition, Heil will not sell replacement clamshells for the original Proset mic boom for repair purposes. In spite of their claims, Heil do not care about customer service. The cost to repair a damaged ProSet is more than replacing it with a Yamaha CM-500 and the ProSet would have to be shipped to Heil rather than allow the user to make a relatively simple change of mic element and housing. 73, ... Joe, W4TV On 5/27/2010 9:54 AM, Mike wrote: juergen wrote: Hi Paul What are your mods? Did you just use a capacitor to roll off the bass? Someone once told me that the Heil HC5 is sound transducer that was very common on PC motherboards. I lost the web link of the manufacturer, which is a pity since the HC5 seems to produce good audio on just about every radio that I have used. The only problem is that you cant buy the HC5 cartridge anymore. John Have you asked Heil at i...@heilsound.commailto:i...@heilsound.com 73, Mike NF4L _ __ 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] MH2 Microphone Issue
Jeff At the suggestion of Ian GM3SEK, I removed the spring under the ptt and cut a bit off it before stretching back to its original length. It was a bit fiddly but not difficult. Dropped it more than once! The ptt is now much easier to use but as others have remarked, it has no positive tactile feedback - it needs a click or similar. A shame, since the quality of the audio is very good, although my voice prefers the MD2. 73 Stephen G4SJP On 27/05/2010 03:08, Jeff Cochrane - VK4BOF vk4bof.elecr...@gmail.com wrote: G'day everyone! First of all, After having given my K3 its first HF hitout this last weekend for our (Myself - VK4BOF, Gary - VK4FD Dale - VK4DMC) mini dxpedition for the World Flora Fauna at Undara Lava Tubes National Park in North Queensland, Australia I must say that I am more than impressed with my new K3. It performed flawlessly and was a real pleasure to use, the MH2 microphone is however another matter. Whilst its transmitted audio quality is excellent it appears that you must be a 400lb gorilla to use the damned thing, the TX button is so stiff to use. :-) And even when you get the button in, it must be only barely making contact that as soon as you relieve any pressure at all from the button, the radio goes back to RX mode. Does anyone else have this issue? Jeff Cochrane VK4BOF Innisfail QLD Australia Elecraft K3 #4257 __ 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] MH2 Microphone Issue
G'day everyone! First of all, After having given my K3 its first HF hitout this last weekend for our (Myself - VK4BOF, Gary - VK4FD Dale - VK4DMC) mini dxpedition for the World Flora Fauna at Undara Lava Tubes National Park in North Queensland, Australia I must say that I am more than impressed with my new K3. It performed flawlessly and was a real pleasure to use, the MH2 microphone is however another matter. Whilst its transmitted audio quality is excellent it appears that you must be a 400lb gorilla to use the damned thing, the TX button is so stiff to use. :-) And even when you get the button in, it must be only barely making contact that as soon as you relieve any pressure at all from the button, the radio goes back to RX mode. Does anyone else have this issue? Jeff Cochrane VK4BOF Innisfail QLD Australia Elecraft K3 #4257 __ 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] MH2 Microphone Issue
Jeff The button on my MH2 is certainly stiff. But mine seems to be a bit more forgiving in the PTT department than you've described yours to be. I don't have to remain totally clamped down on it for the rig to stay in transmit mode. I've never opened it, but perhaps there's a means to adjust it inside? 73, Dave K6DCH Sent from my iPhone On May 26, 2010, at 4:08 PM, Jeff Cochrane - VK4BOF vk4bof.elecr...@gmail.com wrote: G'day everyone! First of all, After having given my K3 its first HF hitout this last weekend for our (Myself - VK4BOF, Gary - VK4FD Dale - VK4DMC) mini dxpedition for the World Flora Fauna at Undara Lava Tubes National Park in North Queensland, Australia I must say that I am more than impressed with my new K3. It performed flawlessly and was a real pleasure to use, the MH2 microphone is however another matter. Whilst its transmitted audio quality is excellent it appears that you must be a 400lb gorilla to use the damned thing, the TX button is so stiff to use. :-) And even when you get the button in, it must be only barely making contact that as soon as you relieve any pressure at all from the button, the radio goes back to RX mode. Does anyone else have this issue? Jeff Cochrane VK4BOF Innisfail QLD Australia Elecraft K3 #4257 __ 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] MH2 Microphone Issue
The MH2 mic PTT may be getting caught in the rubber surround. It is easy to undo the cover. Note that the PTT button only fits one-way, there is a cut away slide which fits onto the switch. For my own use the mic insert had a tad to much bass, it has been slightly modded here to suit. regards Paul zl1ajy -- View this message in context: http://elecraft.365791.n2.nabble.com/MH2-Microphone-Issue-tp5106621p5107093.html Sent from the Elecraft mailing list archive at Nabble.com. __ 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
