Re: [Elecraft] microphones
Robert, Condenser Dynamic microphones can both be used with a K3 or KX3. The Astatic microphone may be a crystal of ceramic microphone element (depending on when it was manufactured). There have been discussions on this reflector that it may work without an interface; others say it needs an interface. I use an Astatic for my desk microphone for my K3; unfortunately the crystal element was defective. I replaced the element with an electret from Radio Shack. Works well with good reports. 73 George AI4VZ -Original Message- From: Robert 'RC' Conley Sent: Saturday, June 22, 2013 12:00 PM To: Elecraft@mailman.qth.net Subject: [Elecraft] microphones The Elecraft MH2 is a condenser microphone The Astatic is a crystal microphone A dynamic microphone are they interchangeable -- On the 8th day. God created Amateur Radio and Baseball. NAQCC #0420 SKCC #089 FP #567 Wiol ono __ 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] microphones
RC, No, they are not interchangable. The impedance is the problem. The unamplified D-104 (and other Astatic crystal [or ceramic] element mics needs a high impedance to work into and sound good. The K2 and K3 have a low impedance input. If you have the amplified D-104, then it will drive the K2 or K3 just fine. For the unamplified version, some have stated success by putting a 47k to 1 megohm resistor in series with the AF line. I use an FET in the base of my D-104 to change from high impedance to low (my D-104 needs bias to power the FET). One way to convert the microphone is to discard the original element and replace it with an electret element (which needs bias just like the MH2 microphone). 73, Don W3FPR On 6/22/2013 12:00 PM, Robert 'RC' Conley wrote: The Elecraft MH2 is a condenser microphone The Astatic is a crystal microphone A dynamic microphone are they interchangeable __ 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] microphones
Robert, Off topic but... I love your quote at the end of your email, On the 8th day. God created Amateur Radio and Baseball. Read it to the xyl and she rolled her eyes and said that you forgot to add beer to your lineHihi. Check out my QRZ page. 73, Steve KS6PD Kx3 #3604 On Saturday, June 22, 2013, GDanner wrote: Robert, Condenser Dynamic microphones can both be used with a K3 or KX3. The Astatic microphone may be a crystal of ceramic microphone element (depending on when it was manufactured). There have been discussions on this reflector that it may work without an interface; others say it needs an interface. I use an Astatic for my desk microphone for my K3; unfortunately the crystal element was defective. I replaced the element with an electret from Radio Shack. Works well with good reports. 73 George AI4VZ -Original Message- From: Robert 'RC' Conley Sent: Saturday, June 22, 2013 12:00 PM To: Elecraft@mailman.qth.net javascript:; Subject: [Elecraft] microphones The Elecraft MH2 is a condenser microphone The Astatic is a crystal microphone A dynamic microphone are they interchangeable -- On the 8th day. God created Amateur Radio and Baseball. NAQCC #0420 SKCC #089 FP #567 Wiol ono __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net javascript:; 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 javascript:; 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] Microphones - Yaesu MH-31
Steve, The only thing I can say is that there is more than enough audio drive with my MH3 microphone. Does your MH-31 work with plenty of audio on your FT-817 or FT-857? My numbering scheme was consistent with a left to right convention looking into the jack opening (like the diagram in the FT-817 manual. If you were looking at the end of the plug, the numbers would be reversed. 73, Don W3FPR On 7/26/2012 10:58 PM, Steve KC8QVO wrote: Don Wilhelm-4 wrote Pin 4 goes to the tip Pin 5 goes to the shell Pin 3 goes to Ring 1 Pin 2 goes to Ring 2 Don, Your numbering was backwards from what I used, but I translated the numbers from the other direction (made 8 = 1, 1 = 8, and the others in between to match) and got the same pin designations and wire colors. However, I took (your numbers) pin 2 and pin 5 and grounded them to the shell together (pin 2 shows as mic ground in the schematics so I figured I'd ground it to the regular ground also). After looking over your numbers I moved the regular ground (your pin 2) to ring 2. This gave me the same results as before. If I crank the power up I can get some deflection in the power meter, but I can't get the ALC meter to budge on max mic gain and max compression. I just tested the output with a pair of headphones on. I took the compression off (0) and as I increased it the audio volume from the monitor circuit got louder. Just out of curiosity - what are some others using for microphones and what settings are you finding work for those microphones? My experience with other rigs is that if the mic gain is too high the audio distorts, likewise if the compression is too high it distorts. Here I have both gain and compression max'ed out and seemingly not getting enough. That doesn't make much sense to me, but I know the KX3 is a different rig. Is that perhaps a change that can be made in software? Or am I at the limits of the hardware? Steve, KC8QVO -- View this message in context: http://elecraft.365791.n2.nabble.com/Microphones-Yaesu-MH-31-tp7559727p7559858.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] Microphones - Yaesu MH-31
I got a buddy of mine to get on 6m this evening to try out the mic on SSB. He said I sounded just fine. I did not adjust any settings, I had it on full mic gain and compression the whole time. I was able to get 10-12 watts out (off the meter on the rig, didn't hook it to an external meter/monitor) but still no ALC deflection. Oh well. As long as I can be heard and don't sound distorted I guess I am in good shape. Steve, KC8QVO -- View this message in context: http://elecraft.365791.n2.nabble.com/Microphones-Yaesu-MH-31-tp7559727p7559910.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
Re: [Elecraft] Microphones - Yaesu MH-31
Don Wilhelm-4 wrote Pin 4 goes to the tip Pin 5 goes to the shell Pin 3 goes to Ring 1 Pin 2 goes to Ring 2 Don, Your numbering was backwards from what I used, but I translated the numbers from the other direction (made 8 = 1, 1 = 8, and the others in between to match) and got the same pin designations and wire colors. However, I took (your numbers) pin 2 and pin 5 and grounded them to the shell together (pin 2 shows as mic ground in the schematics so I figured I'd ground it to the regular ground also). After looking over your numbers I moved the regular ground (your pin 2) to ring 2. This gave me the same results as before. If I crank the power up I can get some deflection in the power meter, but I can't get the ALC meter to budge on max mic gain and max compression. I just tested the output with a pair of headphones on. I took the compression off (0) and as I increased it the audio volume from the monitor circuit got louder. Just out of curiosity - what are some others using for microphones and what settings are you finding work for those microphones? My experience with other rigs is that if the mic gain is too high the audio distorts, likewise if the compression is too high it distorts. Here I have both gain and compression max'ed out and seemingly not getting enough. That doesn't make much sense to me, but I know the KX3 is a different rig. Is that perhaps a change that can be made in software? Or am I at the limits of the hardware? Steve, KC8QVO -- View this message in context: http://elecraft.365791.n2.nabble.com/Microphones-Yaesu-MH-31-tp7559727p7559858.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
Re: [Elecraft] Microphones - Yaesu MH-31
Steve KC8QVO wrote I do not believe the mic needs any power, but I could be wrong. When connected to the FT-8x7 radios, one of the wires carries +5V but the mic element itself does not use it. I use an MH-31 coupled with a DYC-8x7 processor/preamp dongle (http://www.box73.de/product_info.php?products_id=945). I suspect the output is significantly higher than with the MH-31 alone. I'm hopeful that it will be usable with the KX-3. 73, Barry N1EU -- View this message in context: http://elecraft.365791.n2.nabble.com/Microphones-Yaesu-MH-31-tp7559727p7559730.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
Re: [Elecraft] Microphones - Yaesu MH-31
Steve, The MH31 mic is a dynamic type and does not need bias. I suspect that you do not have the correct wires connected. Take a look at the wiring for that microphone at http://homepage.ntlworld.com/rg4wpw/mh31a.html Pin 4 goes to the tip Pin 5 goes to the shell Pin 3 goes to Ring 1 Pin 2 goes to Ring 2 Look at the diagram on G4WPW's mic page to be sure you count in the right direction on the RJ-45. It is left to right as you look into the socket (opposite if you look at the end of the plug). 73, Don W3FPR On 7/24/2012 7:06 AM, Steve KC8QVO wrote: I have a spare Yaesu MH-31 from my FT-857D that has never been used. So I figured I would implement it with the KX3. There is very little audio coming out of the rig, the ALC will not budge on max audio and compression unless I whistle in to the mic where it will hit about 5 tick marks. I can hear audio when I turn the monitor gain up or listen on another rig, but it is not strong. The cable I have with the mic is a cut off end of a CAT5 cable, about 5' long. The RJ-45 is used on the mic end and the wires are soldered to a 4-circuit TRRS 3.5mm plug on the rig end. __ 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] Microphones - Yaesu MH-31
Steve KC8QVO wrote I do not believe the mic needs any power, but I could be wrong. When connected to the FT-8x7 radios, one of the wires carries +5V but the mic element itself does not use it. I use an MH-31 coupled with a DYC-8x7 processor/preamp dongle (http://www.box73.de/product_info.php?products_id=945). I suspect the output is significantly higher than with the MH-31 alone. I'm hopeful that it will be usable with the KX-3. 73, Barry N1EU -- View this message in context: http://elecraft.365791.n2.nabble.com/Microphones-Yaesu-MH-31-tp7559727p7559729.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
Re: [Elecraft] Microphones for K3?
In a recent message, Bill Maddock [EMAIL PROTECTED] wrote ... I have a factory kenwood mic mc-43, a MC-60A and a Heil Pro set all for my TS-850S; will these work without a rewire? The Kenwood MC-43S is a very popular microphone with both the K2 and the K3, Bill. It will plug in and work without modification to the wiring of the 8-pin connector. 73 -- David G4DMP Leeds, England, UK -- ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Microphones for K3?
Jim Miller wrote: K3 on order. I have the original Heil Gold Line with the HC-5 and the full range elements that I planned to use on my K3. It is wired Kenwood 8 pin (TS-440). Ready to go Hi Jim, I use the Goldline on the K3 with the EQ virtually flat. For ragchew on 80m I use the broadcast element and for DX the HC5 without having to make any changes to the gains etc. IMHO the K3 and the GM5 are a marriage made in heaven :-) 73 Ian -- Ian J Maude, G0VGS SysOp GB7MBC DX Cluster Member RSGB, GQRP K2 #4044 |K3 #455 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] Microphones for K3?
I have a factory kenwood mic mc-43, Yes (I'm using one) a MC-60A Maybe. It will work if you leave the preamplifier off or use batteries. Otherwise the connection on pin 5 of the mic plug (rig) will need to be moved to pin 6. a Heil Pro set all for my TS-850S; Yes, if it is the HC-4 or HC-5 version and you are using the Heil AD-1K adapter (or you connect it to the rear panel mic input). I'm also using a ProSet with HC-5. 73, ... Joe, W4TV -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Bill Maddock Sent: Monday, April 14, 2008 8:47 PM To: elecraft@mailman.qth.net Subject: [Elecraft] Microphones for K3? Guys, I have a factory kenwood mic mc-43, a MC-60A and a Heil Pro set all for my TS-850S; will these work without a rewire? Also who has bought the TXCO what difference does it make? Thanks and 73m Bill N4ZI __ __ Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now. http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Microphones (was electronic product standards)
Thanks for posting your interesting comments Brendan. Within the context of SSB useage in ham radio I believe that the 'hype about audio' could lead to another related problem, if not already existing, which is poor use of the HF spectrum available to us. Given the proven fact that a SSB transmitter filter bandwidth of 2.1 kHz will result in the transmission of a very 'good quality' speech signal, provided that the carrier is positioned properly and that the mic - audio - modulator system characteristics suit human speech, I see no valid reason for using wider SSB filters. In addition to the increased amount of spectrum used, the use of wider filters followed by linear amplifiers whose IMD products might be only 30db or so below a test tone obviously results in a wider 'Interference Bandwidth', and should be discouraged IMHO. Adding Reverse ALC to the mix can further increase interference. Just an opinion. 73, Geoff GM4ESD Brendan Minish [EMAIL PROTECTED] wrote: snip These words (in ham radio use anyway) have become marketing speak and now mean nothing. As a former audio professional I cannot understand why all the hype about Audio in ham radio and to my ears there's a lot of money wasted on trying to make SSB into something it isn't. snip ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: Re: [Elecraft] Microphones (was electronic product standards)
I've heard it said that some contest stations deliberately transmit a wider-than-necessary signal to keep competitiors away from their channel. David G3UNA Within the context of SSB useage in ham radio I believe that the 'hype about audio' could lead to another related problem, if not already existing, which is poor use of the HF spectrum available to us. Given the proven fact that a SSB transmitter filter bandwidth of 2.1 kHz will result in the transmission of a very 'good quality' speech signal, provided that the carrier is positioned properly and that the mic - audio - modulator system characteristics suit human speech, I see no valid reason for using wider SSB filters. In addition to the increased amount of spectrum used, the use of wider filters followed by linear amplifiers whose IMD products might be only 30db or so below a test tone obviously results in a wider 'Interference Bandwidth', and should be discouraged IMHO. Adding Reverse ALC to the mix can further increase interference. Just an opinion. 73, Geoff GM4ESD - Email sent from www.virginmedia.com/email Virus-checked using McAfee(R) Software and scanned for spam ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: Re: [Elecraft] Microphones (was electronic product standards)
On Thu, 14 Feb 2008 [EMAIL PROTECTED] wrote: I've heard it said that some contest stations deliberately transmit a wider-than-necessary signal to keep competitiors away from their channel. Ahmust be one of those advance the technology things that justify contestsgood for everyone. 73 k3hrn Thom,EIEIO Email, Internet, Electronic Information Officer www.baltimorehon.com/Home of the Baltimore Lexicon www.tlchost.net/hosting/ Web Hosting as low as 3.49/month ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: Re: [Elecraft] Microphones (was electronic product standards)
I've heard it said that some contest stations deliberately transmit a wider-than-necessary signal to keep competitiors away from their channel. I personally would not intentionally transmit a wide signal during a contest. It would, imho, be counterproductive, apart from any other reasons. On the small 40m band in Europe, during large contests, you almost can not avoid stations sitting on top of each other and/or overlapping. Even if I assume that there were no BC stations between 7100kHz and 7200kHz and that a channel is only 2.5kHz wide, between 7040kHz and 7200kHz one only has space for 63 running stations without any conflicts arising, or using the older limits of 7040kHz to 7100kHz space for 23 SSB signals. Here there will always be a certain amount of elbowing going on. If one considers all the high powered phase noise being radiated and so on, then even a 9+20 signal can be a weak signal when compared to 40m contest noise levels. And finding gaps between stations can be a real art. This is why you want to have a signal with a very high average power level, but one which is also not wider than necessary. vy 73 de toby ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: Re: [Elecraft] Microphones (was electronic product standards)
At 08:28 AM 2/14/2008, [EMAIL PROTECTED] wrote... This is why you want to have a signal with a very high average power level, but one which is also not wider than necessary. That sounds like CW. :-) ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Microphones
KD1NA We need more of your kind of attitude and true ham spirit. 73, Jerry K3BZ - Original Message - From: David Robertson [EMAIL PROTECTED] To: Elecraft elecraft@mailman.qth.net Sent: Thursday, February 14, 2008 8:32 AM Subject: [Elecraft] Microphones I know that there has been lots of responses to the microphone compatibility on this forum but let me comment on this subject on a different light. When I first became licensed back in 1957 we were expected to, at the very least, be able to read and interpret schematics, wire up our own rig interconnections, and in a lot of cases build our own equipment. Now days that is not necessarily true for quite a few of our fellow radio amateurs. Because of the above, it can be quite a challenge for some of us to perform the necessary research and rewire our mike connectors for the Elecraft K2/K3 rigs. Many of us would have no problem doing this but we can easily forget that there are those who are dependent on getting the correct mike for the rig or have help in changing their connector's wiring to match a rig. Manufactures are little help as they wire their mic jacks to what pleases them and it is their right to do so. The bottom line is lets help those who need it and not criticize them. and for those who need help get it here or ask a fellow ham. 73 Dave KD1NA ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: Re: [Elecraft] Microphones (was electronic product standards)
Agreed... You only get so much area under the curve so why waste it with width when its height that gets you heard? -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Thursday, February 14, 2008 5:29 AM To: elecraft@mailman.qth.net Subject: Re: Re: [Elecraft] Microphones (was electronic product standards) I've heard it said that some contest stations deliberately transmit a wider-than-necessary signal to keep competitiors away from their channel. I personally would not intentionally transmit a wide signal during a contest. It would, imho, be counterproductive, apart from any other reasons. On the small 40m band in Europe, during large contests, you almost can not avoid stations sitting on top of each other and/or overlapping. Even if I assume that there were no BC stations between 7100kHz and 7200kHz and that a channel is only 2.5kHz wide, between 7040kHz and 7200kHz one only has space for 63 running stations without any conflicts arising, or using the older limits of 7040kHz to 7100kHz space for 23 SSB signals. Here there will always be a certain amount of elbowing going on. If one considers all the high powered phase noise being radiated and so on, then even a 9+20 signal can be a weak signal when compared to 40m contest noise levels. And finding gaps between stations can be a real art. This is why you want to have a signal with a very high average power level, but one which is also not wider than necessary. vy 73 de toby ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Microphones (was electronic product standards)
I read years ago that speech processors like pre-emphasized audio (louder highs, quieter lows). And the heavier the processing the more pre-emphasis is optimum. Does anyone know if the K3 speech processor does that automatically? Al N1AL On Thu, 2008-02-14 at 01:52, Brendan Minish wrote: On Wed, 2008-02-13 at 12:12 -0800, Ron D'Eau Claire wrote: There were some microphones produced for the communications market back then such as the famous Astatic D-104 which had a microphone element with a shaped response showing a distinct hump around 3 kHz, rolling off slowly at lower frequencies and somewhat faster at higher frequencies. That hump helped with articulation by emphasizing the mid-range speech frequencies. This is a presence peak. I don't know if anyone is doing that today for mainstream communications microphones. Today Paging Microphones are still specifically designed to have this pronounced mid range presence peak and also usually include Quite a bit of low frequency Roll off Shure have a range of dynamic elements available for this market, that have response curves that look remarkably similar to the HC4 and HC5 elements. take a look at the response curve of the Shure 450 http://www.shure.com/ProAudio/Products/WiredMicrophones/us_pro_450SeriesII_content a direct link to just the curve http://www.shure.com/groups/public/@gms_gmi_web_us/documents/web_resource/site_img_us_rc_450series2_larg.gif the 522 has a broader presence peak http://www.shure.com/ProAudio/Products/WiredMicrophones/us_pro_522_content Direct to curve http://www.shure.com/stellent/groups/public/@gms_gmi_web_us/documents/web_resource/site_img_us_rc_522_large.gif elements for these mics (and many others) are available at low cost as replacement parts. Heil sound plot their curves on a different log scale but after accounting for that the similarities are remarkable. http://www.heilsound.com/amateur/products/hc4/index.htm The needs of paging systems which include efficient use of limited power and maximum intelligibility in noisy environments are pretty much identical to our requirements for effective SSB modulation. Any well made paging/ Dispatch mic (or element..) is ideal for amateur radio use, most are far more durable and cost effective than 'the made for ham radio' stuff that is popular these days. Even the high end Ham mics only offer general and uninformative comments about shaping and clarity that say much and convey little. These words (in ham radio use anyway) have become marketing speak and now mean nothing. As a former audio professional I cannot understand why all the hype about Audio in ham radio and to my ears there's a lot of money wasted on trying to make SSB into something it isn't. Interestingly, one of the big exceptions is the inexpensive little Radio Shack electret element. It comes with a frequency response chart showing a very flat response across the audio spectrum. If you are looking for flat then these are a great place to start, however the design of the housing may have quite an impact on how things sound, this can be used to your advantage to create a presence peak or LF roll off. My own headset is based on a salvaged electret condenser mic with some audio tailoring done by means of a simple R/C filter, being lazy I copied the circuit of an Icom handmic. It works great and cost me almost nothing. 73's Brendan EI6IZ ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] Microphones
Barry, It seems to me that I will need to rewire the SM20 plug. Is there an Icom to K3 mic adaptor or is there any other way to use the SM20 without rewiring the plug. I really don't want to sell the SM20 when I come to sell the PRO3 on purchase of the K3. Kenwood/Elecraft and Icom put the mike element on the same two pins 1 and 7. Unfortunately, Kenwood/Elecraft use pins 2 and 8 for PTT where Icom used 5 and 6. To use the SM20 with the K3 you have two choices: 1) rewire the SM20 plug to move PTT to pin 5 and PTT ground (chassis) to pin 8. 2) make an adapter cable - Foster MaleFoster Female Buxcomm CE8Buxcomm CBC8 1 1 2 5 3 4 5 6 7 - 7 8 - 6 73, ... Joe, W4TV -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Barry Simpson Sent: Friday, December 14, 2007 8:24 PM To: elecraft@mailman.qth.net Subject: [Elecraft] Microphones Is it possible to use an ICOM SM20 with the K3 ? Looking at the K3 manual the mic socket pinouts are different from the SM20 although there is bias available as used in the ICOM electret element. It seems to me that I will need to rewire the SM20 plug. Is there an Icom to K3 mic adaptor or is there any other way to use the SM20 without rewiring the plug. I really don't want to sell the SM20 when I come to sell the PRO3 on purchase of the K3. Seasons greetings and 73 to all. Barry Simpson VK2BJ ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Microphones
Don't sell it, just rewire the connector. I don't have the SM20 but I do have an SM6 that I rewired and it works fine. In the SM6's mic connector I connected the mic audio (white) to pin 1, the PTT (red) to pin2, and the gnd/shield to pin 7. The K2's jumpers were set to the MD2/MH2 configuration with a resistor between pins 1 and 6. John [K7SVV] - Original Message - From: Barry Simpson [EMAIL PROTECTED] To: elecraft@mailman.qth.net Sent: Friday, December 14, 2007 6:23 PM Subject: [Elecraft] Microphones Is it possible to use an ICOM SM20 with the K3 ? Looking at the K3 manual the mic socket pinouts are different from the SM20 although there is bias available as used in the ICOM electret element. It seems to me that I will need to rewire the SM20 plug. Is there an Icom to K3 mic adaptor or is there any other way to use the SM20 without rewiring the plug. I really don't want to sell the SM20 when I come to sell the PRO3 on purchase of the K3. Seasons greetings and 73 to all. Barry Simpson VK2BJ ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.503 / Virus Database: 269.17.2/1184 - Release Date: 12/14/2007 11:29 AM ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Microphones
You could make your own using a eight pin receptacle, some cable and a eight pin plug. You can find them all here: http://www.therfc.com/micconn.htm MP8MIL, inline male receptacle I believe would be the one you need along with the standard mike connector. The fastest would be to re-wire the Icom mike plug, not the most fun job either. I don't know of any adapters for the K3. 73 Dale Barry Simpson wrote: Is it possible to use an ICOM SM20 with the K3 ? Looking at the K3 manual the mic socket pinouts are different from the SM20 although there is bias available as used in the ICOM electret element. It seems to me that I will need to rewire the SM20 plug. Is there an Icom to K3 mic adaptor or is there any other way to use the SM20 without rewiring the plug. I really don't want to sell the SM20 when I come to sell the PRO3 on purchase of the K3. Seasons greetings and 73 to all. Barry Simpson VK2BJ ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com -- View this message in context: http://www.nabble.com/Microphones-tp14346862p14349604.html Sent from the Elecraft mailing list archive at Nabble.com. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Microphones for K2/3
Geoffrey Mackenzie-Kennedy wrote: Never had a problem John getting full rated PEP output from K2/100 #3255 using the HC-4 and HC-5 elements in the Heil ProSet Plus headset without an external preamp, but I don't use the K2/100's VOX. If I used VOX a little more audio gain would be required in the VOX circuit, but additional audio gain between the mic elements and modulator would result in overdrive. Perhaps my K2/100 is a positive tolerance version. Interesting point, as I have that same issue with my Heil ProSet (HC5) and my Kenwood TS-2000. The rig has more than adequate modulation with this mic, but not enough gain in the VOX circuit to make VOX usable. Seems to me that the gain through these two audio paths ought to be proportionate in a good design -- i.e., if max modulation gain is just enough for full modulation, then max VOX amp gain should be just enough for effortless VOX operation. Bill W5WVO 73, Geoff GM4ESD John R. Lonigro [EMAIL PROTECTED] wrote: John and Charles: The Heil Prosets with the HC-4 or HC-5 elements don't have quite enough output to drive the K2 without either an external preamp or tweaking of the K2's internal circuitry. The version with the electret element seems to work better with the K2. I believe the Heil K2 Proset is essentially the version with the electret element, but I'm not 100% certain on that matter. All Prosets require an adapter to match your particular mic jack configuration, so that is not a factor. No idea about the K3. 73's, John AA0VE ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Microphones for K2/3
John, If your D104 is an older one with the high impedance crystal or ceramic element, yes it will not work so well (if at all). There was an article in QST about a year ago with a circuit design that had a very high impedance input and the low impedance output required by modern day radios, although a transformer with the right ratio should work too. Another alternative is to change the element in the D104. Heil offers a kit to do just that - check www.heilsound.com for info. My D104 with an HC5 element draws comments from time to time. 73, Don W3FPR John Huggins wrote: Thanks for the information all. So... I guess hooking up a D104 straight to K2 is not going to work out so well. Yes I know this is like putting tail fins on a Ford Taurus, but the kids really dig talking into a mic like that during times we promote ham radio. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Microphones for K2/3
I am pretty sure that there are a couple of very simple circuits in W1FB's Design Notebook that specifically use the D104 - modern_radio as an example. Greg KI4MMM K2 #6100 On Sep 6, 2007, at 1:29 PM, Don Wilhelm wrote: John, If your D104 is an older one with the high impedance crystal or ceramic element, yes it will not work so well (if at all). There was an article in QST about a year ago with a circuit design that had a very high impedance input and the low impedance output required by modern day radios, although a transformer with the right ratio should work too. Another alternative is to change the element in the D104. Heil offers a kit to do just that - check www.heilsound.com for info. My D104 with an HC5 element draws comments from time to time. 73, Don W3FPR John Huggins wrote: Thanks for the information all. So... I guess hooking up a D104 straight to K2 is not going to work out so well. Yes I know this is like putting tail fins on a Ford Taurus, but the kids really dig talking into a mic like that during times we promote ham radio. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Microphones for K2/3
Thank you for the hints. Thanks to your and other's comments on the Elecraft list I have found numerous good examples with some as minimalistic as a FET + passives all the way to a good Instrumentation Amp + passives. This has inspired me to create a circuit based more on the modern In-Amp method leaving the only question of what the input impedance and range of typical radio mic inputs. Plus a survey of what voltage and current are available on the mic connector helps design for the most radios. In support of this I am scoring some wins on D104 mics on Ebay which are available on the cheap. Fun stuff... perhaps I will make this available as a kit for fellow D104 freaks. John Greg Derda wrote: I am pretty sure that there are a couple of very simple circuits in W1FB's Design Notebook that specifically use the D104 - modern_radio as an example. Greg KI4MMM K2 #6100 On Sep 6, 2007, at 1:29 PM, Don Wilhelm wrote: John, If your D104 is an older one with the high impedance crystal or ceramic element, yes it will not work so well (if at all). There was an article in QST about a year ago with a circuit design that had a very high impedance input and the low impedance output required by modern day radios, although a transformer with the right ratio should work too. Another alternative is to change the element in the D104. Heil offers a kit to do just that - check www.heilsound.com for info. My D104 with an HC5 element draws comments from time to time. 73, Don W3FPR John Huggins wrote: Thanks for the information all. So... I guess hooking up a D104 straight to K2 is not going to work out so well. Yes I know this is like putting tail fins on a Ford Taurus, but the kids really dig talking into a mic like that during times we promote ham radio. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Microphones for K2/3
Charles Harpole wrote: I see that now Elecraft is offering sale of a Heil K2 Pro Set mic/headphone unit, saying it is optimized for K2. I assume that also means K3. Charles brings up a good point. What is it that makes any microphone optimized for any radio. Pin outs are obvious of course. - Impedance? - Bandwidth? - Signal Strength? John ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Microphones for K2/3
Marketing. :) -- Julian, G4ILO K2 s/n: 392 K3 s/n: ??? G4ILO's Shack: www.g4ilo.com Ham-Directory: www.ham-directory.com On 9/5/07, John Huggins [EMAIL PROTECTED] wrote: Charles brings up a good point. What is it that makes any microphone optimized for any radio. Pin outs are obvious of course. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Microphones for K2/3
On Wed, 05 Sep 2007 06:53:40 -0400, John Huggins wrote: What is it that makes any microphone optimized for any radio. Pin outs are obvious of course. Many years ago, an international standards organization issued a poorly thought out standard for 2-way radio communications that, if followed, resulted in the bandwidth of transmitted audio being rolled off by 3-6 dB at 3 kHz. Because the higher audio frequencies (1-4 kHz) contribute the most to intelligibility, this resulted in reduced talk power and muddy audio if a mic with good (flat) frequency response is used. To compensate for this lousy standard, mic companies began building mics with a strong peak in their response around 3 kHz. This response peak is clearly visible in the response of mics like the Shure 450 -- there's a 10 dB peak at 3 kHz! Plug this mic into a pro sound system and it will sound really nasty, but connected to you ham rig it sounds just about right. Some ham transceivers provide a switchable peak in the audio response so that a pro mic with flat response can be used. The K2 does not. Another element of good communications audio (that is, good talk power) is to limit the low frequency response so that transmitter power is not wasted on the bassy parts of speech. That's because these low frequencies contribute very little to intelligibility. A good communications circuit will roll off sharply on the low end somewhere between 250 and 400 Hz. It's easy to design this into ham gear, and it's also designed into a few mics. The EV 635A, for nearly 50 years a mainstay of broadcasting, rolls off at about 150 Hz. The K2 runs flat down to about 40 Hz, but can be modified to move the rolloff up to about 200 Hz by changing some capacitors and resistors. A mic also needs enough output voltage to drive the radio. This is not an issue with most ham rigs, but the K2 is a bit low on gain through the audio chain, so it takes a pretty hot mic to drive it well. Pro dynamic mics don't have enough output to drive it very well. Finally, the output impedance of the mic needs to be low enough that the input impedance of the radio doesn't load it down. Mics are not designed to be loaded (that is, terminated). They are designed to work into an impedance at least 5-10 times their own source impedance. The input impedance of the K2 is on the order of 600 ohms, which is on the low side for a pro mic (typically 150 ohms output impedance). This is easy to change with a few resistors. Summarizing -- for use with the K2, a mic needs relatively high output, should have an output impedance lower than about 100 ohms, should have a pronounced response peak around 3 kHz, and should be rolled off around 250-400 Hz on the low end. 73, Jim Brown K9YC ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Microphones for K2/3
John and Charles: The Heil Prosets with the HC-4 or HC-5 elements don't have quite enough output to drive the K2 without either an external preamp or tweaking of the K2's internal circuitry. The version with the electret element seems to work better with the K2. I believe the Heil K2 Proset is essentially the version with the electret element, but I'm not 100% certain on that matter. All Prosets require an adapter to match your particular mic jack configuration, so that is not a factor. No idea about the K3. 73's, John AA0VE Charles Harpole wrote: I see that now Elecraft is offering sale of a Heil K2 Pro Set mic/headphone unit, saying it is optimized for K2. I assume that also means K3. Charles brings up a good point. What is it that makes any microphone optimized for any radio. Pin outs are obvious of course. - Impedance? - Bandwidth? - Signal Strength? John ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Microphones for K2/3
John and all, You are correct that 'Heil Proset' by itself does not adequately describe the microphone. As is the case with all Heil mics, one must also be specific about the mic element used. The K2 works best with an electret element because they have higher output levels. The K3 FAQ pages indicate that it has adequate mic gain to handle the lower output Heil HC4 and HC5 elements. The Heil Proset K2 can be used with either the K2 or the K3, and it comes with the Elecraft adapter. 73, Don W3FPR John R. Lonigro wrote: John and Charles: The Heil Prosets with the HC-4 or HC-5 elements don't have quite enough output to drive the K2 without either an external preamp or tweaking of the K2's internal circuitry. The version with the electret element seems to work better with the K2. I believe the Heil K2 Proset is essentially the version with the electret element, but I'm not 100% certain on that matter. All Prosets require an adapter to match your particular mic jack configuration, so that is not a factor. No idea about the K3. 73's, John AA0VE ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Microphones for K2/3
Thanks for the information all. So... I guess hooking up a D104 straight to K2 is not going to work out so well. Yes I know this is like putting tail fins on a Ford Taurus, but the kids really dig talking into a mic like that during times we promote ham radio. The D104 with my old Kenwood TS-520 still receives great audio reports and I would like to continue that tradition in some way with new gear. Crazy? John Don Wilhelm wrote: John and all, You are correct that 'Heil Proset' by itself does not adequately describe the microphone. As is the case with all Heil mics, one must also be specific about the mic element used. The K2 works best with an electret element because they have higher output levels. The K3 FAQ pages indicate that it has adequate mic gain to handle the lower output Heil HC4 and HC5 elements. The Heil Proset K2 can be used with either the K2 or the K3, and it comes with the Elecraft adapter. 73, Don W3FPR John R. Lonigro wrote: John and Charles: The Heil Prosets with the HC-4 or HC-5 elements don't have quite enough output to drive the K2 without either an external preamp or tweaking of the K2's internal circuitry. The version with the electret element seems to work better with the K2. I believe the Heil K2 Proset is essentially the version with the electret element, but I'm not 100% certain on that matter. All Prosets require an adapter to match your particular mic jack configuration, so that is not a factor. No idea about the K3. 73's, John AA0VE ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Microphones for K2/3
Never had a problem John getting full rated PEP output from K2/100 #3255 using the HC-4 and HC-5 elements in the Heil ProSet Plus headset without an external preamp, but I don't use the K2/100's VOX. If I used VOX a little more audio gain would be required in the VOX circuit, but additional audio gain between the mic elements and modulator would result in overdrive. Perhaps my K2/100 is a positive tolerance version. 73, Geoff GM4ESD John R. Lonigro [EMAIL PROTECTED] wrote: John and Charles: The Heil Prosets with the HC-4 or HC-5 elements don't have quite enough output to drive the K2 without either an external preamp or tweaking of the K2's internal circuitry. The version with the electret element seems to work better with the K2. I believe the Heil K2 Proset is essentially the version with the electret element, but I'm not 100% certain on that matter. All Prosets require an adapter to match your particular mic jack configuration, so that is not a factor. No idea about the K3. 73's, John AA0VE ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] Microphones for the K3
Wayne, are we going to be able to use the existing microphones for the K3? I have the mobile mic for the K2, as well as the desk mic and the Heil headset all wired for Kenwood. Stan Rife W5EWA Houston, TX K2 S/N 4216 -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Bill W5WVO Sent: Monday, April 30, 2007 12:05 AM To: wayne burdick Cc: elecraft@mailman.qth.net Subject: [Elecraft] Re: K3 S meter Hmmm... I just went back through my reflector mail as well as the published Omni-VII literature, and I can't find anywhere it says 6 dB per S-unit. I could have swore that I read that. Could be I assumed it, though... That used to be one of the standards in days gone by... LONG gone by... Just did the math based on S9 = 50 uV, and if you figure 1 uV for S0, you get 3.775 dB per S-unit, pretty much what you said. If you use 6 dB per S-unit, a 0.25 uV signal (nominal minimum detectable) would be between an S1 and an S2. Is this right? On the face of it, it doesn't seem so -- but if you go by the old-time verbal strength descriptions for the S scale, an S1 is a barely perceptible signal. Neglecting any atmospheric noise floor for the moment, a barely perceptible signal in a modern HF receiver would be about 0.25 uV, so by these lights, maybe the 6 dB per S-unit isn't so far off. Maybe 5 dB makes the most sense, since this places the minimal detectable signal near S0, and anything above that would move the S-meter (including the atmospheric noise floor). I think that would be my vote. Bill / W5WVO wayne burdick wrote: I think 3.5 to 4 dB per S-unit is closer to operator expectations, Bill, but I'm sure TT has their reasons. We do agree on 50 uV = S9. Whether the S-meter compensates for the preamp and attenuator is an interesting subject; we might provide a menu entry to turn this on/off. 73, Wayne N6KR On Apr 29, 2007, at 5:15 PM, Bill W5WVO wrote: Wayne, Just as a data point, in case you don't know -- the Omni-VII features a calibrated S-meter (50 uV = S9, 1 S-unit = 6 dB) on all bands, and it always reads the same for a given signal level regardless of the state of pre-amps or attenuators switched in/out. --- http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Microphones for the K3
Yes. The K3 8 pin mic connector is wired the same as the K2 using the Kenwood pinout. Plus we added a lot more mic pre-amp gain (adjustable) in the K3. 73, Eric WA6HHQ --- Stan Rife wrote: Wayne, are we going to be able to use the existing microphones for the K3? I have the mobile mic for the K2, as well as the desk mic and the Heil headset all wired for Kenwood. Stan Rife W5EWA Houston, TX K2 S/N 4216 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Microphones for the K3
Eric Swartz - WA6HHQ, Elecraft wrote: Yes. The K3 8 pin mic connector is wired the same as the K2 using the Kenwood pinout. Plus we added a lot more mic pre-amp gain (adjustable) in the K3. Ah. My first K3 rework - my K2s are wired to match Yaesu. Please don't hide the traces! thanks for putting up with me in the booth at Visalia! - jeff wk6i -- Jeff Stai [EMAIL PROTECTED] Twisted Oak Winery http://www.twistedoak.com/ Winery Blog http://www.elbloggotorcido.com/ ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Microphones for the K3
Can the K3's connector be configured for other microphones at the time of assembly? My K2 is set up for my Icom mics, since I have seven of 'em, including a Heil HS ... and no others. 73! Ken Kopp - K0PP [EMAIL PROTECTED] ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] Microphones for K2
Jim, Not difficult IMHO, but you decide on the level of difficulty for you. Certainly that D104 can be made to work with the K2. If it is the amplified version, no problem, just give it the proper microphone plug and all will be well. If it is the unamplified version, then you will have to build a pre-amp for it. There was a preamp specifically for that application in QST within the past few years. The other alternative is to take out the old crystal element and replace it with a high output electret element so it works just like your Icom mics. 73, Don W3FPR -Original Message- I'm currently finishing up K2 #5757 and plan to add SSB in the near future. I currently have an Icom 746 and the Heil Pro-set Ic. I'm wondering if I'll be able to use that headset with the K2? From what I've read, it sounds like the right choice as the mike output is higher for both the Icom and K2, but thought I'd ask to make sure. Also, I have an old D-104 that I used to use with my Heath HX-10 (no, I didn't build it, but it's as old as I am, was my first xmtr, and I just can't bring myself to sell it grin). Is it difficult to make this mike work with the K2? Thanks for any help! -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.432 / Virus Database: 268.15.15/580 - Release Date: 12/8/2006 12:53 PM ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Microphones for K2
Hi Jim - I use my old D-104 with the original crystal cartridge all the time with my K2 and get great reports. No need for a preamp, etc. as the crystal cartridge has output to burn! The problem with using a nonamplified D-104 with the K2 is that the D-104 is a very high impedance mic and the K2 requires a low impedance mic. An amplified D-104 takes care of this by using the amp in the bottom of the mic stand to do the impedance matching - just be sure to take care in adjusting the volume pot in the base so you don't overdrive the audio input in the K2. If you don't have an amplified stand, just running the D-104 straight into the K2 will result in lots of drive but the audio will be very narrow and tinny - sort of like talking through a couple of cups with a tight string between them! The secret to using an unamplified D-104 into a low impedance is to put a resistor in series with the D-104 mic output (can be done inside the base of the stand) - something between 300K and 500K usually will allow the lower frequencies produced by the D-104 crystal cartridge to actually show up while decreasing the output to an acceptable level. A lot of us old timers put a 1 meg pot in series with the audio output from the D-104 cartridge (mount inside the base of the stand) and then adjust it for the best balance between tone and output while listening to the audio in a separate receiver. Do this and enjoy your veteran D-104! Have fun. 73 es gud dxing -- Don N4HH ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
