Re: [Elecraft] Noise-cancelling Headphones Redux
Darn, I had to try... I have an AL-1306, nice Amp, but not I suspect as nice as a KPA-500, or 1500... 73s and thanks, Dave (NK7Z/NNR0DC) https://www.nk7z.net ARRL Technical Specialist ARRL Volunteer Examiner ARRL OOC for Oregon On 12/9/18 7:30 PM, eric norris wrote: Dear Dave: I asked my KPA1500 if she wanted to be your KPA1500. There was a slight shudder from her front cloven hooves. She went to FAN 5, wailing like a banshee, and all the LEDs flashed "NO NO NO" in Morse--at 15wpm so she was sure even I could copy. "It's OK, baby!," I screamed above her shrieking fans, "I will never leave you!" The pigsty I call my shack grew quiet. As I pressed her POWER button, she quivered slightly, and I swear the power LEDs all lit one last time--and bent up into a slight smile. Nice try, though. 73 Eric WD6DBM __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Noise-cancelling Headphones Redux
I don't care WHO ya are, that stuff's funny... ...LORD, I apologize, and be with the orphans down there in New Guinea, Amen. On Sun, Dec 9, 2018 at 10:33 PM eric norris via Elecraft < elecraft@mailman.qth.net> wrote: > Dear Dave: > I asked my KPA1500 if she wanted to be your KPA1500. > There was a slight shudder from her front cloven hooves. She went to FAN > 5, wailing like a banshee, and all the LEDs flashed "NO NO NO" in Morse--at > 15wpm so she was sure even I could copy. > "It's OK, baby!," I screamed above her shrieking fans, "I will never leave > you!" > The pigsty I call my shack grew quiet. As I pressed her POWER button, she > quivered slightly, and I swear the power LEDs all lit one last time--and > bent up into a slight smile. > Nice try, though. > 73 Eric WD6DBM > > That or your 1500 is filled with bad magic because it is supposed to be > my KPA-1500 and it is mad at you. > > 73s and thanks, > Dave (NK7Z/NNR0DC) > > Sent from Yahoo Mail on Android > __ > 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 > Message delivered to ard...@gmail.com -- -+-+-+-+- Jenny Everywhere's Infinite: Quark Time http://quarktime.net __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Noise-cancelling headphones mystery
I find my RS60 to be comfortable, but sometimes wish they had a cooling system. 73, Scott K9MA -- Scott Ellington. K9MA --- via iPhone > On Dec 9, 2018, at 12:34 PM, Grant Youngman wrote: > > I find the RS60 very comfortable for long periods. I know others who do, and > others that don’t. I have adjusted mine for ME. Which could lead someone > else to find my specific headset uncomfortable (too tight, too loose) for > THEM. You’re certainly right that the comfort of any headset is a very > personal thing. I’ve tried more than one headset that came highly > recommended, "most comfortable ever", and they just gave me a headache. > > Grant NQ5T > K3 #2091 KX3 #8342 > >> >> >> K9MA says that Radio Sport headphones effectively kill the sound. I have no >> problem believing that -- they're designed for use in high noise >> environments. But don't buy a pair until you've tried them on -- headphone >> comfort is a VERY individual thing that depends on the shape of our heads. >> Some contesting friends like them, so I've tried them on at several >> hamfests, and found them an instrument of torture. I couldn't imagine >> wearing them for even a few hours. >> >> 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 > Message delivered to k...@sdellington.us __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Noise-cancelling headphones mystery
I find the RS60 very comfortable for long periods. I know others who do, and others that don’t. I have adjusted mine for ME. Which could lead someone else to find my specific headset uncomfortable (too tight, too loose) for THEM. You’re certainly right that the comfort of any headset is a very personal thing. I’ve tried more than one headset that came highly recommended, "most comfortable ever", and they just gave me a headache. Grant NQ5T K3 #2091 KX3 #8342 > > > K9MA says that Radio Sport headphones effectively kill the sound. I have no > problem believing that -- they're designed for use in high noise > environments. But don't buy a pair until you've tried them on -- headphone > comfort is a VERY individual thing that depends on the shape of our heads. > Some contesting friends like them, so I've tried them on at several hamfests, > and found them an instrument of torture. I couldn't imagine wearing them for > even a few hours. > > 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Noise-cancelling headphones mystery
On 12/9/2018 8:40 AM, CUTTER DAVID via Elecraft wrote: Noise cancelling that I've come across is limited to low/medium frequencies. Yes. Others have correctly identified the reason, but I'll go into a bit of detail for clarity. Noise cancellation works by amplifying a tiny mic on the outside of an earphone and feeding it to the headphones so that the acoustic output is out of polarity with the noise that is acoustically coupled to the ear. For deep cancellation, the sound from the mic and the sound that reaches the ear directly must be of precisely the same amplitude AND precisely the same phase (but out of polarity). This is particularly difficult to achieve, because 1) the headphones themselves attenuate the direct coupling of the noise to the ear, and that attenuation is not flat, and it varies depending on subtle differences in how the earphones fit/seal to the listener's head; 2) Phase is a variable, not a constant, and increases in direct proportion both to frequency and the distance that sound travels. 3) The small distance between the noise-sensing mic and the ear results in phase shift that increases with frequency. 4) The earphones themselves have non-flat phase response. 5) Directivity of both the microphone and the ear covered by the headphone is another variable. The above leads to these conclusions. 1) Low frequency noise is far easier to cancel than higher frequency noise. Noise produced by fans in the KPA1500 has significant higher frequency spectra. 2) Extreme care is needed in the design of noise cancelling headphones. I would expect products of serious audio companies like Sennheiser and Bose to be better performers. 3) I would expect to see new designs using DSP to introduce delay to reduce the time difference resulting from mic placement and equalization for non-flat amplitude and phase response of the total system. K9MA says that Radio Sport headphones effectively kill the sound. I have no problem believing that -- they're designed for use in high noise environments. But don't buy a pair until you've tried them on -- headphone comfort is a VERY individual thing that depends on the shape of our heads. Some contesting friends like them, so I've tried them on at several hamfests, and found them an instrument of torture. I couldn't imagine wearing them for even a few hours. 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Noise-cancelling headphones mystery
See if you can borrow a hi quality aviation noise cancelling headset to try out. I have the now discontinued Sennheiser S1’s which work extremely well in many situations including with a single engine open cockpit aircraft, riding mowers, tractors, field day, etc. They have the added nicety of high quality adaptive noise cancelling and efficient noise cancelling the mic audio as well. Don’t look for “Heil Hi Fidelity” response of the mic. You will sound like you are on an aircraft radio but they cancel noise better than anything I have tested. There a number of sets out there that probably perform at that level. David Clark, Bose, Lightspeed and others... I just happened on to a great deal for the Sennheisers. All run above the $500 mark retail... KD4IZ Sent from my iPhone > On Dec 9, 2018, at 11:40, CUTTER DAVID wrote: > > Noise cancelling that I've come across is limited to low/medium frequencies. > If your hearing takes you higher, the noise-cancelling has finished by then. > This is probably not the ability of the sensing mic but the circuitry and/or > room acoustics, echo, etc. I'm a little out of date on the subject but > that's probably the essence of it. > David G3UNA > >> On 09 December 2018 at 15:26 "Dave Cole (NK7Z)" wrote: >> >> >> As a guess, I would say the response of the mic used to derive the phase >> canceling audio does not adequately cover the audio noise spectrum of >> the 1500 puts out... Thus it can't phase cancel very well... >> >> That or your 1500 is filled with bad magic because it is supposed to be >> my KPA-1500 and it is mad at you. >> >> 73s and thanks, >> Dave (NK7Z/NNR0DC) >> https://www.nk7z.net >> ARRL Technical Specialist >> ARRL Volunteer Examiner >> ARRL OOC for Oregon >> >>> On 12/9/18 5:16 AM, eric norris via Elecraft wrote: >>> I have owned a pair of Heil noise-cancelling headphones for many years. >>> They worked very well to reduce the noise of my old AL-1200 amplifier, and >>> the 5 fans on my cantankerous man-killer Henry 2002A EME amplifier. >>> However, they are completely ineffective against the KPA1500. I bought a >>> pair of Bose noise-cancelling headphones recently, and they work much >>> better but are a bit tinny and eat batteries. >>> My question for the audio experts on this list is why don't the Heils work >>> with the KPA1500? Does anyone have a recommendation for a pair of really >>> good noise-cancelling headphones with a more flat response? >>> 73 Eric WD6DBM >>> >>> Sent from Yahoo Mail on Android >>> __ >>> 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 >>> Message delivered to d...@nk7z.net >>> >> __ >> 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 >> Message delivered to d.cut...@ntlworld.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Noise-cancelling headphones mystery
I fully agree with your comment on the Radiosport. Great headphones, virtually noise free, and on a price par with the better noise cancelling Bose/etc. Of course, when I have mine on, my wife has to kick the chair or slap my head to get my attention. Which may not be all bad? :-) Grant NQ5T K3 #2091 KX3 #8342 > On Dec 9, 2018, at 11:15 AM, K9MA wrote: > > No noise canceling headphones will be effective against the high frequency > noise of the KPA1500 fans. However, passive headphones can be very effective. > The Radiosport makes the fans nearly inaudible. Not cheap, but neither is the > KPA1500. > __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Noise-cancelling headphones mystery
Noise cancelling headphones rely on the distance between microphone and ear being a small fraction of the audio wavelength. At high frequencies, that will be impossible to achieve, and, even if you put in a compensating delay, the path to the ear is going to depend on the direction of the source. -- David Woolley Owner K2 06123. On 09/12/2018 16:40, CUTTER DAVID wrote: ncies. If your hearing takes you higher, the noise-cancelling has finished by then. This is probably not the ability of the sensing mic but the circuitry and/or room acoustics, echo, etc. I'm a little out of date on the subject but that's probably the essence of it __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Noise-cancelling headphones mystery
Noise cancelling that I've come across is limited to low/medium frequencies. If your hearing takes you higher, the noise-cancelling has finished by then. This is probably not the ability of the sensing mic but the circuitry and/or room acoustics, echo, etc. I'm a little out of date on the subject but that's probably the essence of it. David G3UNA > On 09 December 2018 at 15:26 "Dave Cole (NK7Z)" wrote: > > > As a guess, I would say the response of the mic used to derive the phase > canceling audio does not adequately cover the audio noise spectrum of > the 1500 puts out... Thus it can't phase cancel very well... > > That or your 1500 is filled with bad magic because it is supposed to be > my KPA-1500 and it is mad at you. > > 73s and thanks, > Dave (NK7Z/NNR0DC) > https://www.nk7z.net > ARRL Technical Specialist > ARRL Volunteer Examiner > ARRL OOC for Oregon > > On 12/9/18 5:16 AM, eric norris via Elecraft wrote: > > I have owned a pair of Heil noise-cancelling headphones for many years. > > They worked very well to reduce the noise of my old AL-1200 amplifier, and > > the 5 fans on my cantankerous man-killer Henry 2002A EME amplifier. > > However, they are completely ineffective against the KPA1500. I bought a > > pair of Bose noise-cancelling headphones recently, and they work much > > better but are a bit tinny and eat batteries. > > My question for the audio experts on this list is why don't the Heils work > > with the KPA1500? Does anyone have a recommendation for a pair of really > > good noise-cancelling headphones with a more flat response? > > 73 Eric WD6DBM > > > > Sent from Yahoo Mail on Android > > __ > > 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 > > Message delivered to d...@nk7z.net > > > __ > 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 > Message delivered to d.cut...@ntlworld.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Noise-cancelling headphones mystery
No noise canceling headphones will be effective against the high frequency noise of the KPA1500 fans. However, passive headphones can be very effective. The Radiosport makes the fans nearly inaudible. Not cheap, but neither is the KPA1500. 73, Scott K9MA -- Scott Ellington. K9MA --- via iPhone > On Dec 9, 2018, at 6:16 AM, eric norris via Elecraft > wrote: > > I have owned a pair of Heil noise-cancelling headphones for many years. They > worked very well to reduce the noise of my old AL-1200 amplifier, and the 5 > fans on my cantankerous man-killer Henry 2002A EME amplifier. However, they > are completely ineffective against the KPA1500. I bought a pair of Bose > noise-cancelling headphones recently, and they work much better but are a bit > tinny and eat batteries. > My question for the audio experts on this list is why don't the Heils work > with the KPA1500? Does anyone have a recommendation for a pair of really > good noise-cancelling headphones with a more flat response? > 73 Eric WD6DBM > > Sent from Yahoo Mail on Android > __ > 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 > Message delivered to k...@sdellington.us __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Noise-cancelling headphones mystery
As a guess, I would say the response of the mic used to derive the phase canceling audio does not adequately cover the audio noise spectrum of the 1500 puts out... Thus it can't phase cancel very well... That or your 1500 is filled with bad magic because it is supposed to be my KPA-1500 and it is mad at you. 73s and thanks, Dave (NK7Z/NNR0DC) https://www.nk7z.net ARRL Technical Specialist ARRL Volunteer Examiner ARRL OOC for Oregon On 12/9/18 5:16 AM, eric norris via Elecraft wrote: I have owned a pair of Heil noise-cancelling headphones for many years. They worked very well to reduce the noise of my old AL-1200 amplifier, and the 5 fans on my cantankerous man-killer Henry 2002A EME amplifier. However, they are completely ineffective against the KPA1500. I bought a pair of Bose noise-cancelling headphones recently, and they work much better but are a bit tinny and eat batteries. My question for the audio experts on this list is why don't the Heils work with the KPA1500? Does anyone have a recommendation for a pair of really good noise-cancelling headphones with a more flat response? 73 Eric WD6DBM Sent from Yahoo Mail on Android __ 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 Message delivered to d...@nk7z.net __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Noise cancelling headphones
Bose sells replacement earpads … not overly pricey. Grant NQ5T K3 #2091 KX3 #8342 > On Aug 10, 2018, at 1:35 PM, Douglas Hudson wrote: > > I have two pair Bose QC15 and one less costly headphones ($125), all of which > are about three years old. The black coating on every one of the ear piece > cushions has deteriorated and flacked off. The sets work properly and I like > them but I could do without the black poof all over the place. > > Doug H > K7CUU > __ > 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 > Message delivered to ghyoung...@gmail.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Noise cancelling headphones
New replacement pads on fleabay for $15. The old pads do not do well with sweat & body oils. 73, Gary KA1J > I have two pair Bose QC15 and one less costly headphones ($125), all > of which are about three years old. The black coating on every one of > the ear piece cushions has deteriorated and flacked off. The sets > work properly and I like them but I could do without the black poof > all over the place. > > Doug H > K7CUU > __ > 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 > Message delivered to g...@ka1j.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Noise cancelling headphones
I have two pair Bose QC15 and one less costly headphones ($125), all of which are about three years old. The black coating on every one of the ear piece cushions has deteriorated and flacked off. The sets work properly and I like them but I could do without the black poof all over the place. Doug H K7CUU __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Noise cancelling headphones
I also used a QC15 and then moved to the QC25 and found that either is a very comfortable headset to wear for long periods of time. The little microphone that “dangles” in the cord actually works quite well with both the K3s and KX3 in most surroundings. All that it requires is a good TRRS jack to two TRS male plugs adapter. I have tried a couple of the add on boom mics but I prefer to use my desk microphone (Shure SM57 or EV RE50N/D B) most of the time. Very 73 - Mike - K9JRI > On Aug 10, 2018, at 12:20 PM, Mike Kasrich wrote: > > I've used the QC-15 and the are good. I had a headset buddy but the boom was > "limp" it worked. I have a Uflymic for the QC15 if anyone has an interest. > > > My choice now is the Bose QC25 and modmic by Antlion. The QC25 has been > replaced by the QC35 so you can get a "25" in an affordable range. > > __ > 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 > Message delivered to k9...@mac.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Noise cancelling headphones
Another of my 2 cents on this topic... While not for transmitting, there is a worthy consideration for wireless Rx headphones, the Gray Ghost headsets I use for metal detecting. There is a 1/4" plug which goes to the radio & is the transmitter. The headphones pick up this Tx and reproduce the sound. Both the headphones and transmitter do require being charged, this may be a deal breaker for some. My Minelab CTX3030 detector offers some 50 tones in the discovery process and they sound beautiful with this headset. They are mono with very low latency, when swinging the detector, even a little delay is unacceptable and would give incorrect info, so I expect the response would be the same for our needs. I got my set from here: http://www.colonialmetaldetectors.com/gray -ghost-wireless-fbs.html Just google for Gray Ghost headphones. 73, Gary KA1J > I used to design aircraft audio systems for a living, but have been > retired a year. The A20 is a nice headset and the audio quality from > the mic and headphones is very good, over the wired connection, for > safety services (communication with air traffic control). > > Listening to stereo entertainment via Bluetooth probably uses the AD2P > protocol which is stereo and can be pretty decent qualtiy. I don't > know for sure for this headset, but when any Bluetooth device I know > of does phone calls and uses the Mic, it switches to the HSP or HFP > protocol, which is mono and in my opinion, sounds like crap for both > TX and RX. It is lower bandwidth and more compressed. HFP version 1.6 > added better audio encoding, but I do not know if it is widely used. > It would be a shame to take a $1k headset and make it sound like a $5 > headset. > > I would think there might be some sort of headset to wireless TX/RX > adapter that might be available. Jupiter Avionics makes something that > claims to do that. I bet it is expensive and I do not see any mention > of a TSO certification on the data sheet. I guess if you are not using > it for aviation, you may not care. Lots of small aircraft use > uncertified stuff anyway. > > Again, good luck in your search. > > 73, > > Mark > W7MLG > > > On Sun, Aug 5, 2018 at 5:17 AM, Guy Olinger K2AV > wrote: > > > Thanks Mark, > > > > According to a tech at a one of the aviation stores, the latest > > versions of the A20 will allow using the headset/mike to access a > > paired device such as a smartphone, both to and from. Use it by > > muting the phone mike and talking/listening via the A20. > > > > Talking on a phone in a small plane has the same audio issues as > > radio communications with flight service without noise cancellation, > > etc. The A20 handles that kind of problem very well. > > > > The battery and Bluetooth are in an accessible blob on the A20 cord. > > But the idea of 1K$ to start with, and then dropping that 1K$ out of > > warranty to remove the cord beyond the blob gives me the hives. > > > > 73, Guy K2AV > > > > On Sat, Aug 4, 2018 at 12:25 AM Mark Goldberg > > wrote: > > > >> Amazon shows the HP8000 available from third party sellers at > >> wildly varying prices. Sometimes they are bad or fake > >> unfortunately. They claim new, but don't have enough info listed to > >> tell if it meets your criteria. > >> > >> As far as I know, aviation headsets will not have wireless for the > >> main headset or microphone as it is not reliable enough to be > >> certifiable. They will have auxiliary bluetooth inputs for > >> entertainment. > >> > >> I do not know anything that meets your criteria. > >> > >> Good luck in your search, > >> > >> Mark > >> W7MLG > >> > >> On Fri, Aug 3, 2018 at 9:11 PM, Guy Olinger K2AV > >> wrote: > >> > >>> This thread seems to be read by some who are familiar with > >>> headsets, but > >>> I´m asking a slightly different question... > >>> > >>> A) I am looking for a headset/mike combination, with *all* the > >>> following. > >>> > >>> 1) over-the-ear dual headset > >>> 2) noise-cancelling headset > >>> 3) active noise-cancelling boom microphone > >>> 4) wireless, either bluetooth or wireless to USB dongle, bluetooth > >>> preferred, wireless is *required*. > >>> > >>> I have tried endless hours of searching, dozens and dozens of > >>> different search parms but cannot get Google, eBay or Amazon to > >>> make a list with all the required conditions. Something always > >>> gets ignored. > >>> > >>> I know that a Bose A20 aircraft headset can be modified using the > >>> battery and Bluetooth parts only of the plug/cordset. That´s > >>> modifying a 1K$ headset. > >>> > >>> There used to be an "HP8000" that seemed to fit the bill, but > >>> only sold in EU and Asia. That also was called QD834. It > >>> apparently not made now and stock gone. > >>> > >>> Looking for an answer from someone that knows a manufacturer that > >>> makes a model that matches A) 1-4) above. > >>> > >>> Thank you, thank you, thank you if you know the answer. > >>> > >>> 73, Guy K2AV > >>>
Re: [Elecraft] Noise cancelling headphones
I used to design aircraft audio systems for a living, but have been retired a year. The A20 is a nice headset and the audio quality from the mic and headphones is very good, over the wired connection, for safety services (communication with air traffic control). Listening to stereo entertainment via Bluetooth probably uses the AD2P protocol which is stereo and can be pretty decent qualtiy. I don't know for sure for this headset, but when any Bluetooth device I know of does phone calls and uses the Mic, it switches to the HSP or HFP protocol, which is mono and in my opinion, sounds like crap for both TX and RX. It is lower bandwidth and more compressed. HFP version 1.6 added better audio encoding, but I do not know if it is widely used. It would be a shame to take a $1k headset and make it sound like a $5 headset. I would think there might be some sort of headset to wireless TX/RX adapter that might be available. Jupiter Avionics makes something that claims to do that. I bet it is expensive and I do not see any mention of a TSO certification on the data sheet. I guess if you are not using it for aviation, you may not care. Lots of small aircraft use uncertified stuff anyway. Again, good luck in your search. 73, Mark W7MLG On Sun, Aug 5, 2018 at 5:17 AM, Guy Olinger K2AV wrote: > Thanks Mark, > > According to a tech at a one of the aviation stores, the latest versions > of the A20 will allow using the headset/mike to access a paired device such > as a smartphone, both to and from. Use it by muting the phone mike and > talking/listening via the A20. > > Talking on a phone in a small plane has the same audio issues as radio > communications with flight service without noise cancellation, etc. The A20 > handles that kind of problem very well. > > The battery and Bluetooth are in an accessible blob on the A20 cord. But > the idea of 1K$ to start with, and then dropping that 1K$ out of warranty > to remove the cord beyond the blob gives me the hives. > > 73, Guy K2AV > > On Sat, Aug 4, 2018 at 12:25 AM Mark Goldberg > wrote: > >> Amazon shows the HP8000 available from third party sellers at wildly >> varying prices. Sometimes they are bad or fake unfortunately. They claim >> new, but don't have enough info listed to tell if it meets your criteria. >> >> As far as I know, aviation headsets will not have wireless for the main >> headset or microphone as it is not reliable enough to be certifiable. They >> will have auxiliary bluetooth inputs for entertainment. >> >> I do not know anything that meets your criteria. >> >> Good luck in your search, >> >> Mark >> W7MLG >> >> On Fri, Aug 3, 2018 at 9:11 PM, Guy Olinger K2AV >> wrote: >> >>> This thread seems to be read by some who are familiar with headsets, but >>> I’m asking a slightly different question... >>> >>> A) I am looking for a headset/mike combination, with *all* the following. >>> >>> 1) over-the-ear dual headset >>> 2) noise-cancelling headset >>> 3) active noise-cancelling boom microphone >>> 4) wireless, either bluetooth or wireless to USB dongle, bluetooth >>> preferred, wireless is *required*. >>> >>> I have tried endless hours of searching, dozens and dozens of different >>> search parms but cannot get Google, eBay or Amazon to make a list with >>> all >>> the required conditions. Something always gets ignored. >>> >>> I know that a Bose A20 aircraft headset can be modified using the battery >>> and Bluetooth parts only of the plug/cordset. That’s modifying a 1K$ >>> headset. >>> >>> There used to be an “HP8000” that seemed to fit the bill, but only sold >>> in >>> EU and Asia. That also was called QD834. It apparently not made now and >>> stock gone. >>> >>> Looking for an answer from someone that knows a manufacturer that makes a >>> model that matches A) 1-4) above. >>> >>> Thank you, thank you, thank you if you know the answer. >>> >>> 73, Guy K2AV >>> >>> >>> On Fri, Aug 3, 2018 at 10:16 AM, Chris wrote: >>> >>> > Is it Sony WH-1000XM2? I have one and love it. It is pricey but you >>> get >>> > what you pay for. I tried both Bose and Sony, and chose Sony because >>> it >>> > seems better with noise cancelling. When I fly alone for business, I >>> use >>> > it with low volume music from my iphone, and I barely hear the engine >>> > noise. When I fly with my family, I don't get that luxury. LOL >>> > >>> > I also use it as ear mufflers when I use my lawnmower. I can listen to >>> > music or podcast with very low engine noise from the mower. This is >>> > great. I wire it when I use for radios. >>> > >>> > DE Chris AD1AD >>> > >>> > On Thu, Aug 2, 2018 at 4:46 PM, Dave Sublette >>> wrote: >>> > >>> > > So here I am with three hours to wait until my plane boards. I >>> tried a >>> > set >>> > > of Bluetooth Sony noise cancelling headphones. Big mistake. >>> They're >>> > > great. >>> > > >>> > > $300.00 is too much for me. What other models are in use with >>> Elecraft >>> > > folks? >>> > > >>> > > Dave, K4TO >>> > >
Re: [Elecraft] Noise cancelling headphones
Thanks Mark, According to a tech at a one of the aviation stores, the latest versions of the A20 will allow using the headset/mike to access a paired device such as a smartphone, both to and from. Use it by muting the phone mike and talking/listening via the A20. Talking on a phone in a small plane has the same audio issues as radio communications with flight service without noise cancellation, etc. The A20 handles that kind of problem very well. The battery and Bluetooth are in an accessible blob on the A20 cord. But the idea of 1K$ to start with, and then dropping that 1K$ out of warranty to remove the cord beyond the blob gives me the hives. 73, Guy K2AV On Sat, Aug 4, 2018 at 12:25 AM Mark Goldberg wrote: > Amazon shows the HP8000 available from third party sellers at wildly > varying prices. Sometimes they are bad or fake unfortunately. They claim > new, but don't have enough info listed to tell if it meets your criteria. > > As far as I know, aviation headsets will not have wireless for the main > headset or microphone as it is not reliable enough to be certifiable. They > will have auxiliary bluetooth inputs for entertainment. > > I do not know anything that meets your criteria. > > Good luck in your search, > > Mark > W7MLG > > On Fri, Aug 3, 2018 at 9:11 PM, Guy Olinger K2AV > wrote: > >> This thread seems to be read by some who are familiar with headsets, but >> I’m asking a slightly different question... >> >> A) I am looking for a headset/mike combination, with *all* the following. >> >> 1) over-the-ear dual headset >> 2) noise-cancelling headset >> 3) active noise-cancelling boom microphone >> 4) wireless, either bluetooth or wireless to USB dongle, bluetooth >> preferred, wireless is *required*. >> >> I have tried endless hours of searching, dozens and dozens of different >> search parms but cannot get Google, eBay or Amazon to make a list with all >> the required conditions. Something always gets ignored. >> >> I know that a Bose A20 aircraft headset can be modified using the battery >> and Bluetooth parts only of the plug/cordset. That’s modifying a 1K$ >> headset. >> >> There used to be an “HP8000” that seemed to fit the bill, but only sold in >> EU and Asia. That also was called QD834. It apparently not made now and >> stock gone. >> >> Looking for an answer from someone that knows a manufacturer that makes a >> model that matches A) 1-4) above. >> >> Thank you, thank you, thank you if you know the answer. >> >> 73, Guy K2AV >> >> >> On Fri, Aug 3, 2018 at 10:16 AM, Chris wrote: >> >> > Is it Sony WH-1000XM2? I have one and love it. It is pricey but you >> get >> > what you pay for. I tried both Bose and Sony, and chose Sony because it >> > seems better with noise cancelling. When I fly alone for business, I >> use >> > it with low volume music from my iphone, and I barely hear the engine >> > noise. When I fly with my family, I don't get that luxury. LOL >> > >> > I also use it as ear mufflers when I use my lawnmower. I can listen to >> > music or podcast with very low engine noise from the mower. This is >> > great. I wire it when I use for radios. >> > >> > DE Chris AD1AD >> > >> > On Thu, Aug 2, 2018 at 4:46 PM, Dave Sublette >> wrote: >> > >> > > So here I am with three hours to wait until my plane boards. I tried >> a >> > set >> > > of Bluetooth Sony noise cancelling headphones. Big mistake. They're >> > > great. >> > > >> > > $300.00 is too much for me. What other models are in use with >> Elecraft >> > > folks? >> > > >> > > Dave, K4TO >> > > __ >> > > 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 >> > > Message delivered to ve3...@gmail.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 >> > Message delivered to k2av@gmail.com >> > >> >> -- >> Sent via Gmail Mobile on my iPhone >> > __ >> 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 >> > Message delivered to marklgoldb...@gmail.com >> > > -- Sent via Gmail Mobile on my iPhone __ Elecraft mailing list Home:
Re: [Elecraft] Noise cancelling headphones
I feel impelled to comment here. I use the Bose QC-15 and since the model is out of production, they are quite cheap on fleabay. 1. If they are out of warranty, broken and say the serial is removed, $100 to Bose repair (keep your old cable) & your old set will get you a refurbished pair. I understand they will upgrade you if the repair item is no longer available. 2. Headset Buddy by Clear mic provides a perfect fitting boom mic for the QC-15 & also for the older Bose model (same fit) The microphone is excellent in audio quality albeit the cord is with a smaller diameter than the original from Bose. I have several sets of these for the long haul. Caveat, maybe... To the bad, with Headset Buddy version 1 which is all I have used; the phones are reversed in stereo, L is heard on the R & vice versa. HOWEVER... I just went to their old page for it and it says that version is discontinued for $19. and there is now a new and improved version and they say they listened to customers reviews & suggestions. Perhaps the L/R issue is now resolved. The new price is $29. The old ones were worth every penny, I'm sure these are even better. https://www.headsetbuddy.com/clearmic-plus -2-noise-cancelling-boom-microphone-for-bo se-qc15/ 73, Gary KA1J > The first three are easy. The fourthnot so much. If you're willing > to forego wireless you might still be able to find the UFlyMic add-on > for the QC-15 headset. They stopped making them for amateur radio > applications a while back, unfortunately. > > I've never seen a Bluetooth ANR over-the-ear headset. > > - pjd > > > -Original Message- > From: elecraft-boun...@mailman.qth.net > [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Guy Olinger > K2AV Sent: Saturday, August 04, 2018 12:11 AM To: Chris Cc: Elecraft > Discussion List Subject: Re: [Elecraft] Noise cancelling headphones > > This thread seems to be read by some who are familiar with headsets, > but > I´m asking a slightly different question... > > A) I am looking for a headset/mike combination, with *all* the > following. > > 1) over-the-ear dual headset > 2) noise-cancelling headset > 3) active noise-cancelling boom microphone > 4) wireless, either bluetooth or wireless to USB dongle, bluetooth > preferred, wireless is *required*. > > I have tried endless hours of searching, dozens and dozens of > different search parms but cannot get Google, eBay or Amazon to make a > list with all the required conditions. Something always gets ignored. > > I know that a Bose A20 aircraft headset can be modified using the > battery and Bluetooth parts only of the plug/cordset. That´s > modifying a 1K$ headset. > > There used to be an "HP8000" that seemed to fit the bill, but only > sold in EU and Asia. That also was called QD834. It apparently not > made now and stock gone. > > Looking for an answer from someone that knows a manufacturer that > makes a model that matches A) 1-4) above. > > Thank you, thank you, thank you if you know the answer. > > 73, Guy K2AV > > > On Fri, Aug 3, 2018 at 10:16 AM, Chris wrote: > > > Is it Sony WH-1000XM2? I have one and love it. It is pricey but > > you get what you pay for. I tried both Bose and Sony, and chose > > Sony because it seems better with noise cancelling. When I fly > > alone for business, I use it with low volume music from my iphone, > > and I barely hear the engine noise. When I fly with my family, I > > don't get that luxury. LOL > > > > I also use it as ear mufflers when I use my lawnmower. I can listen > > to music or podcast with very low engine noise from the mower. This > > is great. I wire it when I use for radios. > > > > DE Chris AD1AD > > > > On Thu, Aug 2, 2018 at 4:46 PM, Dave Sublette > > wrote: > > > > > So here I am with three hours to wait until my plane boards. I > > > tried a > > set > > > of Bluetooth Sony noise cancelling headphones. Big mistake. > > > They're great. > > > > > > $300.00 is too much for me. What other models are in use with > > > Elecraft > > > folks? > > > > > > Dave, K4TO __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Noise cancelling headphones
The first three are easy. The fourthnot so much. If you're willing to forego wireless you might still be able to find the UFlyMic add-on for the QC-15 headset. They stopped making them for amateur radio applications a while back, unfortunately. I've never seen a Bluetooth ANR over-the-ear headset. - pjd -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Guy Olinger K2AV Sent: Saturday, August 04, 2018 12:11 AM To: Chris Cc: Elecraft Discussion List Subject: Re: [Elecraft] Noise cancelling headphones This thread seems to be read by some who are familiar with headsets, but I’m asking a slightly different question... A) I am looking for a headset/mike combination, with *all* the following. 1) over-the-ear dual headset 2) noise-cancelling headset 3) active noise-cancelling boom microphone 4) wireless, either bluetooth or wireless to USB dongle, bluetooth preferred, wireless is *required*. I have tried endless hours of searching, dozens and dozens of different search parms but cannot get Google, eBay or Amazon to make a list with all the required conditions. Something always gets ignored. I know that a Bose A20 aircraft headset can be modified using the battery and Bluetooth parts only of the plug/cordset. That’s modifying a 1K$ headset. There used to be an “HP8000” that seemed to fit the bill, but only sold in EU and Asia. That also was called QD834. It apparently not made now and stock gone. Looking for an answer from someone that knows a manufacturer that makes a model that matches A) 1-4) above. Thank you, thank you, thank you if you know the answer. 73, Guy K2AV On Fri, Aug 3, 2018 at 10:16 AM, Chris wrote: > Is it Sony WH-1000XM2? I have one and love it. It is pricey but you get > what you pay for. I tried both Bose and Sony, and chose Sony because it > seems better with noise cancelling. When I fly alone for business, I use > it with low volume music from my iphone, and I barely hear the engine > noise. When I fly with my family, I don't get that luxury. LOL > > I also use it as ear mufflers when I use my lawnmower. I can listen to > music or podcast with very low engine noise from the mower. This is > great. I wire it when I use for radios. > > DE Chris AD1AD > > On Thu, Aug 2, 2018 at 4:46 PM, Dave Sublette wrote: > > > So here I am with three hours to wait until my plane boards. I tried a > set > > of Bluetooth Sony noise cancelling headphones. Big mistake. They're > > great. > > > > $300.00 is too much for me. What other models are in use with Elecraft > > folks? > > > > Dave, K4TO > > __ > > 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 > > Message delivered to ve3...@gmail.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 > Message delivered to k2av@gmail.com > -- Sent via Gmail Mobile on my iPhone __ 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 Message delivered to li...@w2irt.net __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Noise cancelling headphones
Amazon shows the HP8000 available from third party sellers at wildly varying prices. Sometimes they are bad or fake unfortunately. They claim new, but don't have enough info listed to tell if it meets your criteria. As far as I know, aviation headsets will not have wireless for the main headset or microphone as it is not reliable enough to be certifiable. They will have auxiliary bluetooth inputs for entertainment. I do not know anything that meets your criteria. Good luck in your search, Mark W7MLG On Fri, Aug 3, 2018 at 9:11 PM, Guy Olinger K2AV wrote: > This thread seems to be read by some who are familiar with headsets, but > I’m asking a slightly different question... > > A) I am looking for a headset/mike combination, with *all* the following. > > 1) over-the-ear dual headset > 2) noise-cancelling headset > 3) active noise-cancelling boom microphone > 4) wireless, either bluetooth or wireless to USB dongle, bluetooth > preferred, wireless is *required*. > > I have tried endless hours of searching, dozens and dozens of different > search parms but cannot get Google, eBay or Amazon to make a list with all > the required conditions. Something always gets ignored. > > I know that a Bose A20 aircraft headset can be modified using the battery > and Bluetooth parts only of the plug/cordset. That’s modifying a 1K$ > headset. > > There used to be an “HP8000” that seemed to fit the bill, but only sold in > EU and Asia. That also was called QD834. It apparently not made now and > stock gone. > > Looking for an answer from someone that knows a manufacturer that makes a > model that matches A) 1-4) above. > > Thank you, thank you, thank you if you know the answer. > > 73, Guy K2AV > > > On Fri, Aug 3, 2018 at 10:16 AM, Chris wrote: > > > Is it Sony WH-1000XM2? I have one and love it. It is pricey but you get > > what you pay for. I tried both Bose and Sony, and chose Sony because it > > seems better with noise cancelling. When I fly alone for business, I use > > it with low volume music from my iphone, and I barely hear the engine > > noise. When I fly with my family, I don't get that luxury. LOL > > > > I also use it as ear mufflers when I use my lawnmower. I can listen to > > music or podcast with very low engine noise from the mower. This is > > great. I wire it when I use for radios. > > > > DE Chris AD1AD > > > > On Thu, Aug 2, 2018 at 4:46 PM, Dave Sublette > wrote: > > > > > So here I am with three hours to wait until my plane boards. I tried a > > set > > > of Bluetooth Sony noise cancelling headphones. Big mistake. They're > > > great. > > > > > > $300.00 is too much for me. What other models are in use with > Elecraft > > > folks? > > > > > > Dave, K4TO > > > __ > > > 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 > > > Message delivered to ve3...@gmail.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 > > Message delivered to k2av@gmail.com > > > > -- > Sent via Gmail Mobile on my iPhone > __ > 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 > Message delivered to marklgoldb...@gmail.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Noise cancelling headphones
This thread seems to be read by some who are familiar with headsets, but I’m asking a slightly different question... A) I am looking for a headset/mike combination, with *all* the following. 1) over-the-ear dual headset 2) noise-cancelling headset 3) active noise-cancelling boom microphone 4) wireless, either bluetooth or wireless to USB dongle, bluetooth preferred, wireless is *required*. I have tried endless hours of searching, dozens and dozens of different search parms but cannot get Google, eBay or Amazon to make a list with all the required conditions. Something always gets ignored. I know that a Bose A20 aircraft headset can be modified using the battery and Bluetooth parts only of the plug/cordset. That’s modifying a 1K$ headset. There used to be an “HP8000” that seemed to fit the bill, but only sold in EU and Asia. That also was called QD834. It apparently not made now and stock gone. Looking for an answer from someone that knows a manufacturer that makes a model that matches A) 1-4) above. Thank you, thank you, thank you if you know the answer. 73, Guy K2AV On Fri, Aug 3, 2018 at 10:16 AM, Chris wrote: > Is it Sony WH-1000XM2? I have one and love it. It is pricey but you get > what you pay for. I tried both Bose and Sony, and chose Sony because it > seems better with noise cancelling. When I fly alone for business, I use > it with low volume music from my iphone, and I barely hear the engine > noise. When I fly with my family, I don't get that luxury. LOL > > I also use it as ear mufflers when I use my lawnmower. I can listen to > music or podcast with very low engine noise from the mower. This is > great. I wire it when I use for radios. > > DE Chris AD1AD > > On Thu, Aug 2, 2018 at 4:46 PM, Dave Sublette wrote: > > > So here I am with three hours to wait until my plane boards. I tried a > set > > of Bluetooth Sony noise cancelling headphones. Big mistake. They're > > great. > > > > $300.00 is too much for me. What other models are in use with Elecraft > > folks? > > > > Dave, K4TO > > __ > > 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 > > Message delivered to ve3...@gmail.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 > Message delivered to k2av@gmail.com > -- Sent via Gmail Mobile on my iPhone __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Noise cancelling headphones
Is it Sony WH-1000XM2? I have one and love it. It is pricey but you get what you pay for. I tried both Bose and Sony, and chose Sony because it seems better with noise cancelling. When I fly alone for business, I use it with low volume music from my iphone, and I barely hear the engine noise. When I fly with my family, I don't get that luxury. LOL I also use it as ear mufflers when I use my lawnmower. I can listen to music or podcast with very low engine noise from the mower. This is great. I wire it when I use for radios. DE Chris AD1AD On Thu, Aug 2, 2018 at 4:46 PM, Dave Sublette wrote: > So here I am with three hours to wait until my plane boards. I tried a set > of Bluetooth Sony noise cancelling headphones. Big mistake. They're > great. > > $300.00 is too much for me. What other models are in use with Elecraft > folks? > > Dave, K4TO > __ > 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 > Message delivered to ve3...@gmail.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Noise cancelling headphones
I use a set of Sennheiser noise canceling phones, mainly for ARES/RACES works when providing communication for parades. Combined with a noise canceling speaker/mic that has a jack for the phones they provide enough isolation from the marching bands to make communication possible. They are also useful for quieting airplanes, but since I once fell asleep at a Jefferson Airplane concert, I really don't have a problem putting up with noisy environments. 73 Bill AE6JV --- Bill Frantz| If the site is supported by | Periwinkle (408)356-8506 | ads, you are the product.| 16345 Englewood Ave www.pwpconsult.com | | Los Gatos, CA 95032 __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Noise cancelling headphones
Heck, I get latency between the moving mouths and the words they are saying on YouTube vids that I watch using Bluetooth headsets. For the rig work I'll put up with the privation of using wires. :) On Fri, Aug 3, 2018 at 08:52 Bob N3MNT wrote: > Be sure to check them on your rig before buying them. in many cases > Bluetooth introduces too much delay to use for CW work unless very slow > speed. > > > > -- > Sent from: http://elecraft.365791.n2.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 > Message delivered to r...@wc3t.us > -- 72, Rich Hurd / WC3T / DMR: 3142737 Northampton County RACES, EPA-ARRL Public Information Officer for Scouting Latitude: 40.761621 Longitude: -75.288988 (40°45.68' N 75°17.33' W) Grid: *FN20is* __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Noise cancelling headphones
Those of us who wear hearing aids have an advantage. I just turn mine off when the plane is in the air. It works well for me, like 60dB reduction in my right ear, so I choose to sit on the right side of the aisle if I can. 73, Don W3FPR On 8/3/2018 7:54 AM, Barry wrote: I just got off 12 hours of airplanes yesterday and used these: https://www.amazon.com/Audio-Technica-ATH-ANC23-QuietPoint-Noise-Cancelling-Headphones/dp/B004K09H32/ref=sr_1_3?ie=UTF8=1533297057=8-3=ath+anc23 I've had them for a year or two and they work well on steady noise like airplane engine. They don't block voices to any significant degree. And they're very comfortable. I find them to be a great compromise between performance and price, compared to Bose. __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Noise cancelling headphones
Be sure to check them on your rig before buying them. in many cases Bluetooth introduces too much delay to use for CW work unless very slow speed. -- Sent from: http://elecraft.365791.n2.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Noise cancelling headphones
I just got off 12 hours of airplanes yesterday and used these: https://www.amazon.com/Audio-Technica-ATH-ANC23-QuietPoint-Noise-Cancelling-Headphones/dp/B004K09H32/ref=sr_1_3?ie=UTF8=1533297057=8-3=ath+anc23 I've had them for a year or two and they work well on steady noise like airplane engine. They don't block voices to any significant degree. And they're very comfortable. I find them to be a great compromise between performance and price, compared to Bose. Barry W2UP -- Sent from: http://elecraft.365791.n2.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Noise cancelling headphones
I've never tried the RS60CF but I can say the Bose QC15 are the only headphones I choose to use in a long contest. I have a pair of Heil Headsets my father owned and wearing them for an hour is uncomfortable. The QC-15? I wear them day and night without discomfort. 73, Gary KA1J > You can get a pair of factory-refurbished Bose QC-15s for a reasonable > price online. Worth their weight in gold, absolutely. I take them on > every flight and I can get peace and quiet even with the inevitable > squalling brats all around me. > > I've also got the RS60CF and wouldn't dream of replacing it, but for > travel and using my K3 away from my shack, the QC-15s are the BEST. > > - pjd > > > -Original Message- > From: elecraft-boun...@mailman.qth.net > [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Grant Youngman > Sent: Thursday, August 02, 2018 5:03 PM To: k...@arrl.net Cc: Elecraft > Discussion List Subject: Re: [Elecraft] Noise cancelling headphones > > Bose is pretty well the leader in electronic noise cancellation. But > they are also expensive (even more than Sony). > > Worth their weight in GOLD on an airplane. (I still use my ancient > original model 1.0 Bose when I fly - yes they´re clunky compared > to the latest, and I had to replace the ear pads a couple years ago, > but they WORK), and I don´t have to spend another $300-350. Radio?? > Maybe .. it´s another battery to worry about if you´re portable, > especially. You can always spend $1000 for a Bose aviation > headset/mic :-) > > My main radio headset is an RS60CF .. and that isn´t cheap either, > but it doesn´t require a battery ... > > Grant NQ5T > > > > > On Aug 2, 2018, at 4:46 PM, Dave Sublette > > wrote: > > > > So here I am with three hours to wait until my plane boards. I > > tried a set of Bluetooth Sony noise cancelling headphones. Big > > mistake. They're great. > > > > $300.00 is too much for me. What other models are in use with > > Elecraft folks? > > > > Dave, K4TO __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Noise cancelling headphones
I spent years, lots of effort, and lots of money trying to mitigate amplifier fan noise. Many kinds of noise cancelling headphones failed, including one aircraft type. I even tried putting an early NC headset inside of a pair of earmuff type ear protectors. I built a cabinet to enclose the amplifiers, but IT's fan was noisier than the amplifiers. Finally bought a passive Radiosport headset. By far the best, though I still think putting the KPA1500 in the other room would be better. As soon as the remote software is available. 73, Scott K9MA On 8/2/2018 15:46, Dave Sublette wrote: So here I am with three hours to wait until my plane boards. I tried a set of Bluetooth Sony noise cancelling headphones. Big mistake. They're great. $300.00 is too much for me. What other models are in use with Elecraft folks? Dave, K4TO __ 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 Message delivered to k...@sdellington.us -- Scott K9MA k...@sdellington.us __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Noise cancelling headphones
You can get a pair of factory-refurbished Bose QC-15s for a reasonable price online. Worth their weight in gold, absolutely. I take them on every flight and I can get peace and quiet even with the inevitable squalling brats all around me. I've also got the RS60CF and wouldn't dream of replacing it, but for travel and using my K3 away from my shack, the QC-15s are the BEST. - pjd -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Grant Youngman Sent: Thursday, August 02, 2018 5:03 PM To: k...@arrl.net Cc: Elecraft Discussion List Subject: Re: [Elecraft] Noise cancelling headphones Bose is pretty well the leader in electronic noise cancellation. But they are also expensive (even more than Sony). Worth their weight in GOLD on an airplane. (I still use my ancient original model 1.0 Bose when I fly — yes they’re clunky compared to the latest, and I had to replace the ear pads a couple years ago, but they WORK), and I don’t have to spend another $300-350. Radio?? Maybe .. it’s another battery to worry about if you’re portable, especially. You can always spend $1000 for a Bose aviation headset/mic :-) My main radio headset is an RS60CF .. and that isn’t cheap either, but it doesn’t require a battery … Grant NQ5T > On Aug 2, 2018, at 4:46 PM, Dave Sublette wrote: > > So here I am with three hours to wait until my plane boards. I tried a set > of Bluetooth Sony noise cancelling headphones. Big mistake. They're > great. > > $300.00 is too much for me. What other models are in use with Elecraft > folks? > > Dave, K4TO > __ > 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 > Message delivered to ghyoung...@gmail.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 Message delivered to li...@w2irt.net __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Noise cancelling headphones
Bose is pretty well the leader in electronic noise cancellation. But they are also expensive (even more than Sony). Worth their weight in GOLD on an airplane. (I still use my ancient original model 1.0 Bose when I fly — yes they’re clunky compared to the latest, and I had to replace the ear pads a couple years ago, but they WORK), and I don’t have to spend another $300-350. Radio?? Maybe .. it’s another battery to worry about if you’re portable, especially. You can always spend $1000 for a Bose aviation headset/mic :-) My main radio headset is an RS60CF .. and that isn’t cheap either, but it doesn’t require a battery … Grant NQ5T > On Aug 2, 2018, at 4:46 PM, Dave Sublette wrote: > > So here I am with three hours to wait until my plane boards. I tried a set > of Bluetooth Sony noise cancelling headphones. Big mistake. They're > great. > > $300.00 is too much for me. What other models are in use with Elecraft > folks? > > Dave, K4TO > __ > 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 > Message delivered to ghyoung...@gmail.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Noise Cancelling Headphones
Thanks for all the feedback. I need to try out a pair of noise canceling over the ear headset on both CW and SSB to see if it helps. 73, N2TK, Tony -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jim Brown Sent: Thursday, December 26, 2013 2:03 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Noise Cancelling Headphones On 12/26/2013 10:39 AM, Mark Petiford wrote: Re: Is there such a thing as a noise cancelling black box you can plug in aheadset such as the CM-500 and get good noise canceling? No knobs. Just anON-OFF switch like the headsets have. Well, sort of, Tony. In the aviation world, conversions kits have been marketed for popular (in aviation circles) headsets to convert them to noise canceling. They weren't black box plug-in devices, but rather a kit of microphones and electronics mounted in each earpiece and required some disassembly of the existing earpieces. I believe they were made for David Clark and Flightcom headsets, and maybe a few others. The result was a significant improvement over the original passive headset Right. Successful noise cancelling requires that the resulting acoustic output AS COUPLED TO THE EAR CANAL precisely match the acoustic noise that GETS THROUGH THE HEADPHONES TO THE EAR CANAL (caps added for emphasis) in both magnitude and phase, and that the two acoustic signals are out of polarity. That means that the mic picking up the noise be very close to the headphones, the distance between the mic, the transducer, and the ear must be compensated, and the relative response, both magnitude and phase, must be precisely compensated. That's a VERY difficult design problem, and a really good solution is only practical when everything is built as an integrated package, with dedicated mic, headphone transducers, and electronics. 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 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] Noise Cancelling Headphones
Besides comfort which is highly personal, I found two other performance issues with noise canceling headsets. First, the cheaper ones hiss. This is hard to tell with demos at stores since they insist on making you listen with music on. The hiss drives me nuts on the quieter bands. Second, I found that to my ears some headphones make rtty diddles and cw sound wrong. I assume this is a weakness in the noise cancelation which doesn't like non music or non voice material. It annoyed me that bose was so premium priced and I went through several cheaper ones before finally getting a refurb qc15 at a bose outlet store. The headsets were Bose qc15 , best noise canceling, no hiss, comfortable Altec Lansing hissy, but usable iGo, not hissy, usable, not so comfortable, small ear cups No name from CVS, distorts tones, uncomfortable Sony MDR-NC22, in ear, noise canceling not too bad, I can't wear them for too long Logitech (no longer made model). Real nice, but broke after a few contests logitech Refunded entire purchase price. Yamaha cm500. No noise canceling, fairly comfortable, mic bracket is loose after Several years Heil proset. No noise canceling, not as comfortable as cm500 but better made Heil bm10, no noise canceling, on ear. Just for something different Heil proset plus, just don't like how it fits me. It is handy to have several choices and types of earphones, as changing from say headset to earbuds to on ear headphones helps you survive long contests as each rests, and ends up hurting, a different part of your ears/head. Mark. N2QT On Dec 26, 2013, at 7:59 PM, Gary Smith g...@ka1j.com wrote: Worth the money is personal taste perhaps. I tried several noise cancelling headsets from the common passive variety with excellent sound-proofing to several with the electronic noise removal. Without a doubt the most comfortable and most effective headsets I compared were the Bose QC-2. That headphone had issues and was out of warranty. However, Bose will replace a failed headset out of warranty with the same or the next generation of headset for $100. I spotted for the new generation and these are lighter and at least as effective as the older Bose QC2. It's still worth my time to check out new ones in the off-chance something will beat the QC-15 but to date audio quality and ambient sound removal-wise, this is it. Gary KA1J On Thu, Dec 26, 2013 at 10:21 AM, Phil Kane k2...@kanafi.org wrote: On 12/26/2013 8:17 AM, iain macdonnell - N6ML wrote: These have caught my eye at my local Costco recently: http://www.costco.com/Sony-MDR-10RDC-Premium-Noise-Canceling-Headpho nes.product.100083695.html but I keep reminding myself that I have too many headsets already :) Is it worth 180 bucks? Maybe, if you operate in a noisy environment. The Bose QC15 that others are raving about sells for ~$270 ! 73, ~iain / N6ML __ 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 --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.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] Noise Cancelling Headphones
And now its time to close this thread in the interest of containing list volume. :-) 73. Eric list moderator elecraft.com _..._ On Dec 27, 2013, at 5:16 AM, N2TK, Tony tony@verizon.net wrote: Thanks for all the feedback. I need to try out a pair of noise canceling over the ear headset on both CW and SSB to see if it helps. __ 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] Noise Cancelling Headphones
Is there such a thing as a noise cancelling black box you can plug in a headset such as the CM-500 and get good noise canceling? No knobs. Just an ON-OFF switch like the headsets have. And thinking of the CM-500. Has anyone found a set of material covers that fit their ear covers? I would think they would be more comfortable than the plastic against your head. And they would look better than the pieces of paper towels I presently use when wearing the headphones for extended periods. :-) 73, N2TK, Tony -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Gary Smith Sent: Thursday, December 26, 2013 2:58 AM To: Elecraft@mailman.qth.net Subject: Re: [Elecraft] Noise Cancelling Headphones I use the Bose QC-15 as about all I do is CW and the audio on these is wonderful. The noise cancelling though is almost 100% perfect; my old Alpha with its blower is 18 from my head and with the QC-15 on I can't but just barely tell the amp is on or off. I was thinking about getting a headset with a mic though Bose does make the A20 for pilots, at $1100 for what is essentially the QC-15 with a boom mic, I'll pass. They do make a A100T snap on mic for the QC15 but they are $250 for just the mic. I was referred by quite a few people here to check out the Yamaha CM500 for a fine mic, quick match to the K3 and comfortable headsets at $59. I'm so happy with the Bose QC15 that I'm going to keep using these and am going to need to figure out another way to get a mic into the K3 in a way that will be convenient for contesting should I ever decide to do a phone contest. I have an Electrovoice RE-10 which would probably be nice needs no power maybe I can make a clamp-on boom that I can remove from the desk once the contest is over. I also have several condenser mics but they are for recording and would be excess and just problematic for ham use. Anyone have any suggestion of a removable boom mic other than the A100T that will attach to the QC-15 and make it simple to use and then remove when the contest is over? I don't want to use velcro. Thanks 73, Gary KA1J --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.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] Noise Cancelling Headphones
I've never tried noise cancelling headphones, so my one question is, does anyone detect ANY effect to the desired audio? In other words, any Noise-Blanker effects or coloration of the audio? I would suppose that, since they're designed for music, the noise cancelling function is transparent, right? On the very few flights I've taken recently, I successfully used my old Sony MDR-7506's. Maybe I don't know what I'm missing by NOT using a noise cancelling set. 73, Charlie k3ICH - Original Message - From: Ron D'Eau Claire r...@cobi.biz To: elecraft@mailman.qth.net Sent: Thursday, December 26, 2013 2:25 AM Subject: Re: [Elecraft] Noise Cancelling Headphones True noise cancelling headphones will cut noise far, far beyond anything acoustic isolation from ear pads can accomplish. I have a pair of Audio-Technia QuierPoint ATH-ANC1. They are on ear types so I didn't recommend them to the person asking for ones that cover the ears. They are very comfortable for me. When I fly, as the roar and whine of the big jet engines invades the cabin, I just switch them on and all the racket becomes a quite background purr. I often wear them for the entire 11 hours from the west coast of the USA to Europe, even if I'm not listening to any programs. The active circuitry in true noise-cancelling phones inverts the sound arriving and so actually cancels it out. The circuit takes a few seconds to adapt so when the attendant brings my drink she has no trouble waking me. 73 Ron AC7AC __ 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] Noise Cancelling Headphones
The Bose QC15's are very nice for sure. The price, as with all Bose products, is way too high. I use them for CW/ digital contests and the CM-500's for phone contests. I like the CM-500's very much. They are very comfortable but do not have the isolation that one would want in a multi environment. Hope everyone had a very special Christmas day! 73, Randy N1KWF On Thu, Dec 26, 2013 at 8:30 AM, Charlie T, K3ICH pin...@erols.com wrote: I've never tried noise cancelling headphones, so my one question is, does anyone detect ANY effect to the desired audio? In other words, any Noise-Blanker effects or coloration of the audio? I would suppose that, since they're designed for music, the noise cancelling function is transparent, right? On the very few flights I've taken recently, I successfully used my old Sony MDR-7506's. Maybe I don't know what I'm missing by NOT using a noise cancelling set. 73, Charlie k3ICH - Original Message - From: Ron D'Eau Claire r...@cobi.biz To: elecraft@mailman.qth.net Sent: Thursday, December 26, 2013 2:25 AM Subject: Re: [Elecraft] Noise Cancelling Headphones True noise cancelling headphones will cut noise far, far beyond anything acoustic isolation from ear pads can accomplish. I have a pair of Audio-Technia QuierPoint ATH-ANC1. They are on ear types so I didn't recommend them to the person asking for ones that cover the ears. They are very comfortable for me. When I fly, as the roar and whine of the big jet engines invades the cabin, I just switch them on and all the racket becomes a quite background purr. I often wear them for the entire 11 hours from the west coast of the USA to Europe, even if I'm not listening to any programs. The active circuitry in true noise-cancelling phones inverts the sound arriving and so actually cancels it out. The circuit takes a few seconds to adapt so when the attendant brings my drink she has no trouble waking me. 73 Ron AC7AC __ 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 -- Randy Lake N1KWF 73 Gunn Rd. Keene,NH __ 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] Noise Cancelling Headphones
I use custom ear molds when on a long distance motorcycle rides. They do provide great isolation and are comfortable for long periods. I've been using the same set for 7 years with no issues. In addition to audiologists, vendors are usually at major motorcycle shows and sometimes at m'cycle shop (espec BMW) open houses. I still use the Yam headset with my new KX3 as I don't have a boom mic. The Yam works well for long periods too. Bill k4yjj The greatest isolation is achieved with custom ear molds, which you buy from an audiologist who fits them to your ear canal. __ 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] Noise Cancelling Headphones
I also really like the bose qc15 headphones and had been considering one of the add on microphones that are available, like Expensive one http://uflymike.com Or http://www.headsetbuddy.com/clearmic-noise-canceling-microphone-for-bose-qc15-headphones/ Or more generic http://www.modmic.com Or DIY http://www.freewebs.com/k1dg/boseheadphonemod.htm The qc15 comes with a mic as well but not a boom style, just on the cord like for iPhones. The qc15 was more comfortable for me in a 32 hour single op rtty contest than my other choices. The noise canceling does not have the hiss or the distortion of rtty side tone and noise like the cheaper noise canceling 'phones do. I have decided for my limited ssb operation I think my cm500 or heil proset will do just fine. (Well at least for now) Mark. N2QT On Dec 26, 2013, at 2:57 AM, Gary Smith g...@ka1j.com wrote: I use the Bose QC-15 as about all I do is CW and the audio on these is wonderful. The noise cancelling though is almost 100% perfect; my old Alpha with its blower is 18 from my head and with the QC-15 on I can't but just barely tell the amp is on or off. I was thinking about getting a headset with a mic though Bose does make the A20 for pilots, at $1100 for what is essentially the QC-15 with a boom mic, I'll pass. They do make a A100T snap on mic for the QC15 but they are $250 for just the mic. I was referred by quite a few people here to check out the Yamaha CM500 for a fine mic, quick match to the K3 and comfortable headsets at $59. I'm so happy with the Bose QC15 that I'm going to keep using these and am going to need to figure out another way to get a mic into the K3 in a way that will be convenient for contesting should I ever decide to do a phone contest. I have an Electrovoice RE-10 which would probably be nice needs no power maybe I can make a clamp-on boom that I can remove from the desk once the contest is over. I also have several condenser mics but they are for recording and would be excess and just problematic for ham use. Anyone have any suggestion of a removable boom mic other than the A100T that will attach to the QC-15 and make it simple to use and then remove when the contest is over? I don't want to use velcro. Thanks 73, Gary KA1J --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.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] Noise Cancelling Headphones
Tony, I'm using the Heill covers that others use for the headset pro on my CM500 98% fit. 73 Arie PA3A N2TK, Tony schreef op 26-12-2013 14:20: Is there such a thing as a noise cancelling black box you can plug in a headset such as the CM-500 and get good noise canceling? No knobs. Just an ON-OFF switch like the headsets have. And thinking of the CM-500. Has anyone found a set of material covers that fit their ear covers? I would think they would be more comfortable than the plastic against your head. And they would look better than the pieces of paper towels I presently use when wearing the headphones for extended periods. :-) 73, N2TK, Tony __ 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] Noise Cancelling Headphones
The noise pickup must be very close to the ear piece to allow proper and constant phase for effective canceling. Having a separate box would mean the phase would change if you moved your head so would't work. I haven't noticed any noise blanker effect. There are surely minor errors in the canceling process but Bose seems the have it pretty well worked out. iPod music is great through them even at 4 ft. :-) Brian , K0DTJ On Dec 26, 2013, at 5:20, N2TK, Tony tony@verizon.net wrote: Is there such a thing as a noise cancelling black box you can plug in a headset such as the CM-500 and get good noise canceling? No knobs. Just an ON-OFF switch like the headsets have. __ 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] Noise Cancelling Headphones
These have caught my eye at my local Costco recently: http://www.costco.com/Sony-MDR-10RDC-Premium-Noise-Canceling-Headphones.product.100083695.html but I keep reminding myself that I have too many headsets already :) The reviews seem decent. They probably don't have the same construction quality as your MDR-V6's (guessing), but may be worth checking out if you're a member, or know someone who is... 73, ~iain / N6ML On Wed, Dec 25, 2013 at 2:16 PM, Joel Black w4...@charter.net wrote: I am looking for a pair of noise cancelling headphones. I have a pair of Sony MDR-V6's that I love, but they do not have noise cancelling capability and my wife's embroidery machine is severely limiting my radio operations. I have already looked at the Yamaha CM500's because they come so highly recommended on this group. If they're noise cancelling, I cannot find that information about them. I want something that will last. The MDR-V6's have lasted at least 10 years if not longer. I've only had to replace the earpads. I want something that *covers* my ear *not* something that sits *on* my ear. Those that sit *on* my ears are uncomfortable after a very short while. Merry Christmas and 73, Joel - W4JBB __ 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] Noise Cancelling Headphones
The audio seems just fine on typical aircraft program material with no obvious distortion to my tin ears. The fact that I can turn the program volume down to normal levels and hear just fine or end the constant, high dB assault on my ears when I'm not listening at all is the overriding factor to me. Fortunately I have a very quiet shack so I've never used them there. 73, Ron AC7AC -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Charlie T, K3ICH Sent: Thursday, December 26, 2013 5:30 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Noise Cancelling Headphones I've never tried noise cancelling headphones, so my one question is, does anyone detect ANY effect to the desired audio? In other words, any Noise-Blanker effects or coloration of the audio? I would suppose that, since they're designed for music, the noise cancelling function is transparent, right? On the very few flights I've taken recently, I successfully used my old Sony MDR-7506's. Maybe I don't know what I'm missing by NOT using a noise cancelling set. 73, Charlie k3ICH __ 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] Noise Cancelling Headphones
I just read the second page of reviews, and there are a couple of complaints about picking up FM broadcast radio stations. That may be a bad sign! I have the old Heil ProSet QuietPhone (with the NC lump in the cord), which was horribly susceptible to RFI. Something to look out for on any model you choose. At least with the Costco one, you can return it to the store if it doesn't work out... 73, ~iain / N6ML On Thu, Dec 26, 2013 at 8:17 AM, iain macdonnell - N6ML a...@dseven.org wrote: These have caught my eye at my local Costco recently: http://www.costco.com/Sony-MDR-10RDC-Premium-Noise-Canceling-Headphones.product.100083695.html but I keep reminding myself that I have too many headsets already :) The reviews seem decent. They probably don't have the same construction quality as your MDR-V6's (guessing), but may be worth checking out if you're a member, or know someone who is... 73, ~iain / N6ML On Wed, Dec 25, 2013 at 2:16 PM, Joel Black w4...@charter.net wrote: I am looking for a pair of noise cancelling headphones. I have a pair of Sony MDR-V6's that I love, but they do not have noise cancelling capability and my wife's embroidery machine is severely limiting my radio operations. I have already looked at the Yamaha CM500's because they come so highly recommended on this group. If they're noise cancelling, I cannot find that information about them. I want something that will last. The MDR-V6's have lasted at least 10 years if not longer. I've only had to replace the earpads. I want something that *covers* my ear *not* something that sits *on* my ear. Those that sit *on* my ears are uncomfortable after a very short while. Merry Christmas and 73, Joel - W4JBB __ 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] Noise Cancelling Headphones
On 12/25/2013 11:57 PM, Gary Smith wrote: I have an Electrovoice RE-10 which would probably be nice needs no power Being a retired audio pro who has done a lot of recording, I have a lot of pro mics, including several RE16s. Before I discovered the CM500 (thanks to W6XU, another audio pro), I used an RE16 in my ham station on a boom stand. It worked quite well. The hookup of a pro dynamic mic to ham gear is very simple. Pro mics are wired balanced via shielded twist pair cable to a three-pin connector called an XL. Pin 1 is the shield, Pin 2 is high, Pin 3 is return. To connect a dynamic mic like the RE10, wire Pin 2 to mic in on the rig, wire Pin 3 to mic return on the rig, and connect Pin 1 to the chassis. I made up some adapters for the various rigs that I used that mic with. Nearly all ham mics have a peaked response in the range of 3 kHz to compensate for the rolloff of SSB filters, both on RX and TX. This was, I believe, first developed by Shure about 40 years ago, and you can see it in the response of their communications mics. Pro mics don't have this peak (or if they do, it's in the range of 8-10 kHz), so TXEQ must be adjusted to provide that peak. I used the same low frequency rolloff for the RE10 that I use now for the CM500 -- the three lowest frequency bands max cut, the fourth cut by about half, tweaked by ear based on the reports of a known good listener. For the high end, I boosted the top band by about 10 dB, the next highest band by a few dB, again tweaked on the basis of reports from a good listener. With rigs other than a K3 that don't have TXEQ, I added a capacitor in series with the mic wiring to the rig input and a resistor between the rig mic input and mic signal return. The resistor was about 470 ohms, and the capacitor value was chosen so that the network produced a strong rolloff below 2 kHz -- in other words, a sloped response that peaked around 3 kHz. I got very good audio reports from this simple setup with a TS850, an Omni V, an FT1000MP, and a K2. I modified the K2 to add a low frequency rolloff around 400 Hz also to increase the mic gain by about 6 dB. I did this simply by changing the values of a few resistors and capacitors early in the audio signal chain. The purpose of the mod was simple -- with most ham mics, the K2 is a bit low on gain, so I wanted to hit the limiter harder. I also wanted to minimize the wasted LF energy, and also prevent that LF energy from activating the limiter. 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] Noise Cancelling Headphones
On 12/26/2013 8:17 AM, iain macdonnell - N6ML wrote: These have caught my eye at my local Costco recently: http://www.costco.com/Sony-MDR-10RDC-Premium-Noise-Canceling-Headphones.product.100083695.html but I keep reminding myself that I have too many headsets already :) Is it worth 180 bucks? 73 de K2ASP - Phil Kane Elecraft K2/100 s/n 5402 From a Clearing in the Silicon Forest Beaverton (Washington County) Oregon __ 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] Noise Cancelling Headphones
On Thu, Dec 26, 2013 at 10:21 AM, Phil Kane k2...@kanafi.org wrote: On 12/26/2013 8:17 AM, iain macdonnell - N6ML wrote: These have caught my eye at my local Costco recently: http://www.costco.com/Sony-MDR-10RDC-Premium-Noise-Canceling-Headphones.product.100083695.html but I keep reminding myself that I have too many headsets already :) Is it worth 180 bucks? Maybe, if you operate in a noisy environment. The Bose QC15 that others are raving about sells for ~$270 ! 73, ~iain / N6ML __ 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] Noise Cancelling Headphones
Re: Is there such a thing as a noise cancelling black box you can plug in aheadset such as the CM-500 and get good noise canceling? No knobs. Just anON-OFF switch like the headsets have. Well, sort of, Tony. In the aviation world, conversions kits have been marketed for popular (in aviation circles) headsets to convert them to noise canceling. They weren't black box plug-in devices, but rather a kit of microphones and electronics mounted in each earpiece and required some disassembly of the existing earpieces. I believe they were made for David Clark and Flightcom headsets, and maybe a few others. The result was a significant improvement over the original passive headsets, but not as good as a good pair of noise canceling headsets. I don't know if they are still available. I suspect the low end of the noise canceling headset market has displaced them. Mark KE6BB From: N2TK, Tonytony@verizon.net Sent: Thu, Dec 26, 2013 at 5:20 AM To: Elecraft@mailman.qth.net Subject: Re: [Elecraft] Noise Cancelling Headphones Is there such a thing as a noise cancelling black box you can plug in aheadset such as the CM-500 and get good noise canceling? No knobs. Just anON-OFF switch like the headsets have.And thinking of the CM-500. Has anyone found a set of material covers thatfit their ear covers? I would think they would be more comfortable than theplastic against your head. And they would look better than the pieces ofpaper towels I presently use when wearing the headphones for extendedperiods. :-)73,N2TK, Tony-Original Message-From: elecraft-boun...@mailman.qth.net[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Gary SmithSent: Thursday, December 26, 2013 2:58 AMTo: elecr...@mailman.qth.netSubject: Re: [Elecraft] Noise Cancelling HeadphonesI use the Bose QC-15 as about all I do is CW and the audio on these iswonderful. The noise cancelling though is almost 100% perfect; my old Alphawith its blower is 18 from my head and with the QC-15 on I can't but just barely tell the amp is on or off. I was thinking about getting a headset with a mic though Bose does makethe A20 for pilots, at $1100 for what is essentially the QC-15 with a boommic, I'll pass. They do make a A100T snap on mic for theQC15 but they are $250 for just the mic. I was referred by quite a fewpeople here to check out the Yamaha CM500 for a fine mic, quick match to theK3 and comfortable headsets at $59. I'm so happy with the Bose QC15 that I'm going to keep using these and amgoing to need to figure out another way to get a mic into theK3 in a way that will be convenient for contesting should I ever decide todo a phone contest. I have an Electrovoice RE-10 which would probably benice needs no power maybe I can make a clamp-on boom that I can remove from the desk once the contest is over. I also have several condenser mics but they are for recording and would be excessand just problematic for ham use.Anyone have any suggestion of a removable boom mic other than the A100T thatwill attach to the QC-15 and make it simple to use and then remove when thecontest is over? I don't want to use velcro.Thanks 73,GaryKA1J---This email is free from viruses and malware because avast! Antivirusprotection is active.http://www.avast.com__Elecraft mailing listHome: http://mailman.qth.net/mailman/listinfo/elecraftHelp: http://mailman.qth.net/mmfaq.htmPost: mailto:elecr...@mailman.qth.netThis list hosted by: http://www.qsl.netPlease help support this email list: http://www.qsl.net/donate.html__Elecraft mailing listHome: http://mailman.qth.net/mailman/listinfo/elecraftHelp: http://mailman.qth.net/mmfaq.htmPost: mailto:elecr...@mailman.qth.netThis list hosted by: http://www.qsl.netPlease 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] Noise Cancelling Headphones
On 12/26/2013 10:39 AM, Mark Petiford wrote: Re: Is there such a thing as a noise cancelling black box you can plug in aheadset such as the CM-500 and get good noise canceling? No knobs. Just anON-OFF switch like the headsets have. Well, sort of, Tony. In the aviation world, conversions kits have been marketed for popular (in aviation circles) headsets to convert them to noise canceling. They weren't black box plug-in devices, but rather a kit of microphones and electronics mounted in each earpiece and required some disassembly of the existing earpieces. I believe they were made for David Clark and Flightcom headsets, and maybe a few others. The result was a significant improvement over the original passive headset Right. Successful noise cancelling requires that the resulting acoustic output AS COUPLED TO THE EAR CANAL precisely match the acoustic noise that GETS THROUGH THE HEADPHONES TO THE EAR CANAL (caps added for emphasis) in both magnitude and phase, and that the two acoustic signals are out of polarity. That means that the mic picking up the noise be very close to the headphones, the distance between the mic, the transducer, and the ear must be compensated, and the relative response, both magnitude and phase, must be precisely compensated. That's a VERY difficult design problem, and a really good solution is only practical when everything is built as an integrated package, with dedicated mic, headphone transducers, and electronics. 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] Noise Cancelling Headphones
Jim, I'd worry about sudden surges of high-intensity audio. They happen even in the best families. Your ears could be badly damaged before you could yank the Etymotics out. I'd never, ever use in-ear headphones in a ham-rig setting. Oliver W6ODJ On 25 Jan. 2013, at 20:40 PM, Jim Brown j...@audiosystemsgroup.com wrote: On 12/25/2013 8:22 PM, Randy Farmer wrote: The Radiosport RS 20 headphones are the way to go. They're not cheap, but they really do the job. They have NO electronic circuitry to give RFI problems, just 24 dB of noise reduction due to their excellent acoustic isolation. I tried them, and found them to be VERY VERY uncomfortable, to the point of being instruments of torture. I'm a contester, and often am in the chair for 20-30 hours in a weekend. I couldn't wear the Radiosport cans for an hour. I'd rate the acoustic seal of CM500s comparable to Sony MDR7506 / MDR-V6, all of which I've owned and like a lot. In other words, if you're not happy with the MDR-V6, you won't be happy with the CM500. :) I have heard that east coast contesters love the Bose noise cancelling headphones, but I've never heard them. I did try a pair of Sennheiser noise cancelling headphones almost 20 years ago, and they seemed to work, but I wasn't being critical, and that was 20 years ago. :) The best, and most comfortable, noise isolating headphones I know of are the Etymotic Research ER4-series in-ear earsets, I own two pairs, and wore out one of the cables. They come with 3-4 generic ear fittings, and I found one of them to work well for me -- good isolation and comfort. Cost was about $200 eight years ago when I bought them. The greatest isolation is achieved with custom ear molds, which you buy from an audiologist who fits them to your ear canal. 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 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] Noise Cancelling Headphones
On 12/26/2013 11:06 AM, Oliver Johns wrote: I'd worry about sudden surges of high-intensity audio. YES -- this is why I consider turning off AGC a really bad idea, especially in a contesting environment where you have the RF gain cranked to copy a very weak station and a guy calls you with a signal well over S9. They happen even in the best families. Your ears could be badly damaged before you could yank the Etymotics out. I'd never, ever use in-ear headphones in a ham-rig setting. Absolutely no difference between in-ear and circumaural to the extent that the transducers are linear. 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] Noise Cancelling Headphones
On 12/26/2013 11:02 AM, Jim Brown wrote: Successful noise cancelling requires that the resulting acoustic output AS COUPLED TO THE EAR CANAL precisely match the acoustic noise that GETS THROUGH THE HEADPHONES TO THE EAR CANAL (caps added for emphasis) in both magnitude and phase, and that the two acoustic signals are out of polarity. That means that the mic picking up the noise be very close to the headphones, the distance between the mic, the transducer, and the ear must be compensated, and the relative response, both magnitude and phase, must be precisely compensated. That's a VERY difficult design problem, and a really good solution is only practical when everything is built as an integrated package, with dedicated mic, headphone transducers, and electronics. That, and the miniaturization and customization involved, is why my hearing assistance devices (high-end Phonak behind-the ear hearing aids) cost $3000 per ear. I have yet to try conventional large-cuff headphones since I got those aids three plus years ago. I use a streaming audio adapter that Bluetooth-couples to the aids. It doesn't solve the noise problem but is more comfortable. That works with my K2 just fine! For data modes (RTTY/PSK/SITOR) I work quiet room (RX AF volume at minimum) and use the waterfall as my tuning aid. -- 73 de K2ASP - Phil Kane Elecraft K2/100 s/n 5402 From a Clearing in the Silicon Forest Beaverton (Washington County) Oregon __ 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] Noise Cancelling Headphones
Jim, It takes longer to gouge in-ear phones out of your ear canal than it does to fling off a pair of over-ear cans. That's the problem. A piece of radio gear may at any instant decide to go ballistic and produce a loud buzz or whistle that can damage you. Keeping the AGC on is not a certain protection. Oliver W6ODJ On 26 Jan. 2013, at 11:15 AM, Jim Brown j...@audiosystemsgroup.com wrote: On 12/26/2013 11:06 AM, Oliver Johns wrote: I'd worry about sudden surges of high-intensity audio. YES -- this is why I consider turning off AGC a really bad idea, especially in a contesting environment where you have the RF gain cranked to copy a very weak station and a guy calls you with a signal well over S9. They happen even in the best families. Your ears could be badly damaged before you could yank the Etymotics out. I'd never, ever use in-ear headphones in a ham-rig setting. Absolutely no difference between in-ear and circumaural to the extent that the transducers are linear. 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 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] Noise Cancelling Headphones
On 12/26/2013 1:00 PM, Oliver Johns wrote: It takes longer to gouge in-ear phones out of your ear canal than it does to fling off a pair of over-ear cans. How do you know that? Have you tied both? I have, and I have NOT found this to be true. Further, I can grab the audio gain control as quickly as I can remove headphones. The simple solution is to set up and operate the radio so that it does not blast you with levels that can produce hearing loss. I worked many years in pro audio, and this is something all of us have had to be quite conscious of. 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] Noise Cancelling Headphones
With my Bose QC2 phones, I've never noticed any diminution in the quality of the desired signal. Full disclosure: I'm a CW guy. I have no idea how they perform on SSB. 73, Steve AA4AK On 12/26/2013 8:30 AM, Charlie T, K3ICH wrote: I've never tried noise cancelling headphones, so my one question is, does anyone detect ANY effect to the desired audio? In other words, any Noise-Blanker effects or coloration of the audio? I would suppose that, since they're designed for music, the noise cancelling function is transparent, right? On the very few flights I've taken recently, I successfully used my old Sony MDR-7506's. Maybe I don't know what I'm missing by NOT using a noise cancelling set. 73, Charlie k3ICH - Original Message - From: Ron D'Eau Claire r...@cobi.biz To: elecraft@mailman.qth.net Sent: Thursday, December 26, 2013 2:25 AM Subject: Re: [Elecraft] Noise Cancelling Headphones True noise cancelling headphones will cut noise far, far beyond anything acoustic isolation from ear pads can accomplish. I have a pair of Audio-Technia QuierPoint ATH-ANC1. They are on ear types so I didn't recommend them to the person asking for ones that cover the ears. They are very comfortable for me. When I fly, as the roar and whine of the big jet engines invades the cabin, I just switch them on and all the racket becomes a quite background purr. I often wear them for the entire 11 hours from the west coast of the USA to Europe, even if I'm not listening to any programs. The active circuitry in true noise-cancelling phones inverts the sound arriving and so actually cancels it out. The circuit takes a few seconds to adapt so when the attendant brings my drink she has no trouble waking me. 73 Ron AC7AC __ 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] Noise Cancelling Headphones
I appreciate all the replies. I learned a couple of things: 1. Noise-cancelling technology is not cheap, and 2. It's probably best that I actually audition (I think that's what someone called it) the headphones. I really do not need anything that will accept a mic. I am about 90% CW, 7% data, and 3% voice. For the little that I am on voice, I have the MH2 mic. Most folks that responded recommended the Bose Quiet Comfort 15's. In reference to number 1 above, I really had no idea noise-cancelling headphones would be so expensive, but you get what you pay for. A review site I found was www.head-fi.org. The Bose QC15 were rated #3 and followed the Sennheiser HD 380 Pro (#1 and not sure if they're noise cancelling or sound blocking) and the PSB M4U 2 (#2). However, like eHam.net, it's all subjective - folks either like the headphones or don't and there's no analytical data to back up their findings. 73, Joel - W4JBB On 12/25/13, 4:16 PM, Joel Black wrote: I am looking for a pair of noise cancelling headphones. I have a pair of Sony MDR-V6's that I love, but they do not have noise cancelling capability and my wife's embroidery machine is severely limiting my radio operations. I have already looked at the Yamaha CM500's because they come so highly recommended on this group. If they're noise cancelling, I cannot find that information about them. I want something that will last. The MDR-V6's have lasted at least 10 years if not longer. I've only had to replace the earpads. I want something that *covers* my ear *not* something that sits *on* my ear. Those that sit *on* my ears are uncomfortable after a very short while. Merry Christmas and 73, Joel - W4JBB __ 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] Noise Cancelling Headphones
The Audio Technic QuietPoint phones I mentioned before are still under $80 on Amazon. But they are on-ear types that I chose for small size when folded up to fit in my briefcase. Besides, being noise cancelling, isolating my ears from ambient sounds is not very important and I don't find them uncomfortable on long flights. They, along with many other Audio-Technica noise cancelling headphones that do cover your ears are available on Amazon. Here's a tinyurl link: http://tinyurl.com/mbbafjs The ones I have are at the top. Do they work as well as the high-priced phones? I have no idea. I don't have a store nearby where I can try them side-by-side. Besides, the high-priced units like Bose would have to come with free Champagne before I'd consider spending that much money on phones considering how well the cheaper ones work. Note that they do not suppress speech (or a crying baby). They work very, very well on steady noise (like fans or jet engines). You switch them on and a few seconds later the racket suddenly fades into the distant background. 73 Ron AC7AC -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Joel Black Sent: Thursday, December 26, 2013 3:43 PM To: elecraft Subject: Re: [Elecraft] Noise Cancelling Headphones I appreciate all the replies. I learned a couple of things: 1. Noise-cancelling technology is not cheap, and 2. It's probably best that I actually audition (I think that's what someone called it) the headphones. I really do not need anything that will accept a mic. I am about 90% CW, 7% data, and 3% voice. For the little that I am on voice, I have the MH2 mic. Most folks that responded recommended the Bose Quiet Comfort 15's. In reference to number 1 above, I really had no idea noise-cancelling headphones would be so expensive, but you get what you pay for. A review site I found was www.head-fi.org. The Bose QC15 were rated #3 and followed the Sennheiser HD 380 Pro (#1 and not sure if they're noise cancelling or sound blocking) and the PSB M4U 2 (#2). However, like eHam.net, it's all subjective - folks either like the headphones or don't and there's no analytical data to back up their findings. 73, Joel - W4JBB __ 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] Noise Cancelling Headphones
Worth the money is personal taste perhaps. I tried several noise cancelling headsets from the common passive variety with excellent sound-proofing to several with the electronic noise removal. Without a doubt the most comfortable and most effective headsets I compared were the Bose QC-2. That headphone had issues and was out of warranty. However, Bose will replace a failed headset out of warranty with the same or the next generation of headset for $100. I spotted for the new generation and these are lighter and at least as effective as the older Bose QC2. It's still worth my time to check out new ones in the off-chance something will beat the QC-15 but to date audio quality and ambient sound removal-wise, this is it. Gary KA1J On Thu, Dec 26, 2013 at 10:21 AM, Phil Kane k2...@kanafi.org wrote: On 12/26/2013 8:17 AM, iain macdonnell - N6ML wrote: These have caught my eye at my local Costco recently: http://www.costco.com/Sony-MDR-10RDC-Premium-Noise-Canceling-Headpho nes.product.100083695.html but I keep reminding myself that I have too many headsets already :) Is it worth 180 bucks? Maybe, if you operate in a noisy environment. The Bose QC15 that others are raving about sells for ~$270 ! 73, ~iain / N6ML __ 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 --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.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] Noise Cancelling Headphones
I know that here in Wisconsin, Bose has an outlet store in a nearby mall. I assume you could try on a pair although I have not done so. On 12/26/2013 5:43 PM, Joel Black wrote: I appreciate all the replies. I learned a couple of things: 1. Noise-cancelling technology is not cheap, and 2. It's probably best that I actually audition (I think that's what someone called it) the headphones. I really do not need anything that will accept a mic. I am about 90% CW, 7% data, and 3% voice. For the little that I am on voice, I have the MH2 mic. Most folks that responded recommended the Bose Quiet Comfort 15's. In reference to number 1 above, I really had no idea noise-cancelling headphones would be so expensive, but you get what you pay for. A review site I found was www.head-fi.org. The Bose QC15 were rated #3 and followed the Sennheiser HD 380 Pro (#1 and not sure if they're noise cancelling or sound blocking) and the PSB M4U 2 (#2). However, like eHam.net, it's all subjective - folks either like the headphones or don't and there's no analytical data to back up their findings. 73, Joel - W4JBB On 12/25/13, 4:16 PM, Joel Black wrote: I am looking for a pair of noise cancelling headphones. I have a pair of Sony MDR-V6's that I love, but they do not have noise cancelling capability and my wife's embroidery machine is severely limiting my radio operations. I have already looked at the Yamaha CM500's because they come so highly recommended on this group. If they're noise cancelling, I cannot find that information about them. I want something that will last. The MDR-V6's have lasted at least 10 years if not longer. I've only had to replace the earpads. I want something that *covers* my ear *not* something that sits *on* my ear. Those that sit *on* my ears are uncomfortable after a very short while. Merry Christmas and 73, Joel - W4JBB __ 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 -- 73, Gary K9GS Greater Milwaukee DX Association: http://www.gmdxa.org Society of Midwest Contesters: http://www.w9smc.com CW Ops #1032 http://www.cwops.org __ 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] Noise Cancelling Headphones
Several years ago I ordered StennHeiser on-ear noise-cancelling headphones for reducing noise on aircraft. This was not a luxury purchase but following orders of my audiologist to protect my hearing always when flying. Previously, I had to remove hearing aids and insert foam ear-plugs, which meant I was totally deaf for any in-flight conversation. The StennHeiser's cost me about $150, and did reduce noise slightly, but were very uncomfortable to wear with hearaids. Removing hearing aids and I was back in my silent incommunicado world. So I bought the $300 Bose QC2 (QC15 were not made back then) with comfortable around-ear muff. This proved to be a good investment later when I upgraded to Phonac OTR hearing aids which would absolutely be incompatible with on the ear styles. I gave my StennHeiser to my then-new wife who only used them a couple times. I have not tried them in the noisy shack when I run the 8877 blower (because I am running eme digital modes which are a text mode). Soon I will be trying to run CW eme and the Bose may help a lot to minimize blower noise so I can copy extreme weak signals. BTW I have a pair of Sony MDR-V600 stereo headphones that have done good service for copying weak signals for over a decade. They are over the ear muffs which I must use with my OTR hearing aids. Recently, I have been playing with the NR settings of the K3 to find a good compromise with quieting vs distortion of sounds (F1-2 works fairly well for me as any distorting of sound makes it harder to understand speech). For weak CW cranking down the bandwidth to 100-Hz is the best vs NR. Definition: weak CW -6 dB SNR...signal strengths about -170 dBm. 73, Ed - KL7UW http://www.kl7uw.com Kits made by KL7UW Dubus Mag business: dubus...@gmail.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] Noise Cancelling Headphones
I use Bose Quiet Comfort 2 with the K3. Very effective. AA4AK On 12/25/2013 5:16 PM, Joel Black wrote: I am looking for a pair of noise cancelling headphones. I have a pair of Sony MDR-V6's that I love, but they do not have noise cancelling capability and my wife's embroidery machine is severely limiting my radio operations. I have already looked at the Yamaha CM500's because they come so highly recommended on this group. If they're noise cancelling, I cannot find that information about them. I want something that will last. The MDR-V6's have lasted at least 10 years if not longer. I've only had to replace the earpads. I want something that *covers* my ear *not* something that sits *on* my ear. Those that sit *on* my ears are uncomfortable after a very short while. Merry Christmas and 73, Joel - W4JBB __ 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] Noise Cancelling Headphones
I also use the Bose QC2 - awesome headphones. -Greg NY6C On Dec 25, 2013, at 3:33 PM, Steve Kercel aa4a...@gmail.com wrote: I use Bose Quiet Comfort 2 with the K3. Very effective. AA4AK On 12/25/2013 5:16 PM, Joel Black wrote: I am looking for a pair of noise cancelling headphones. I have a pair of Sony MDR-V6's that I love, but they do not have noise cancelling capability and my wife's embroidery machine is severely limiting my radio operations. I have already looked at the Yamaha CM500's because they come so highly recommended on this group. If they're noise cancelling, I cannot find that information about them. I want something that will last. The MDR-V6's have lasted at least 10 years if not longer. I've only had to replace the earpads. I want something that *covers* my ear *not* something that sits *on* my ear. Those that sit *on* my ears are uncomfortable after a very short while. Merry Christmas and 73, Joel - W4JBB __ 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] Noise Cancelling Headphones
On 12/25/13 at 2:16 PM, w4...@charter.net (Joel Black) wrote: I have a pair of Sony MDR-V6's that I love, but they do not have noise cancelling capability and my wife's embroidery machine is severely limiting my radio operations. I use a set of Senheiser noise canceling headphones when our ARES/RACES works the Los Gatos Children's Christmas parade. They are comfortable for at least a couple of hours and help hearing when a marching band is playing nearby. I have already looked at the Yamaha CM500's because they come so highly recommended on this group. If they're noise cancelling, I cannot find that information about them. They aren't noise canceling, but my wife complains that I can't hear her when I'm wearing them HIHI. Cheers - Bill, AE6JV --- Bill Frantz|After all, if the conventional wisdom was working, the 408-356-8506 | rate of systems being compromised would be going down, www.pwpconsult.com | wouldn't it? -- Marcus Ranum __ 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] Noise Cancelling Headphones
I have the Bose Quiet Comfort 15 I use with the K3 for CW weak signal work. Perfect for field day with the generator hammering away outside the tent. You can disconnect the audio lead and use 'em for quieting on airplanes, etc. They fit over the ear and the seal is effective and comfortable. They use one AAA battery which lasts for 24 to 30 hours of use. Brian, K0DTJ On Dec 25, 2013, at 14:33, Steve Kercel aa4a...@gmail.com wrote: I use Bose Quiet Comfort 2 with the K3. Very effective. AA4AK On 12/25/2013 5:16 PM, Joel Black wrote: I am looking for a pair of noise cancelling headphones. I have a pair of Sony MDR-V6's that I love, but they do not have noise cancelling capability and my wife's embroidery machine is severely limiting my radio operations. I have already looked at the Yamaha CM500's because they come so highly recommended on this group. If they're noise cancelling, I cannot find that information about them. I want something that will last. The MDR-V6's have lasted at least 10 years if not longer. I've only had to replace the earpads. I want something that *covers* my ear *not* something that sits *on* my ear. Those that sit *on* my ears are uncomfortable after a very short while. Merry Christmas and 73, Joel - W4JBB __ 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] Noise Cancelling Headphones
The Radiosport RS 20 headphones are the way to go. They're not cheap, but they really do the job. They have NO electronic circuitry to give RFI problems, just 24 dB of noise reduction due to their excellent acoustic isolation. When I have them on with any receiver audio at all going I can't hear the phone ring on my operating desk. They're also extremely comfortable -- the only headphones I've ever used that let me operate the full 24 hours of Sweepstakes with zero discomfort. Their build quality is light years beyond the cheap plastic construction of the Heil, Bose or Yamaha phones. The RS 60 has the same headset with the addition of a boom microphone for phone operation. 73... Randy, W8FN On 12/25/2013 4:16 PM, Joel Black wrote: I am looking for a pair of noise cancelling headphones. I have a pair of Sony MDR-V6's that I love, but they do not have noise cancelling capability and my wife's embroidery machine is severely limiting my radio operations. I have already looked at the Yamaha CM500's because they come so highly recommended on this group. If they're noise cancelling, I cannot find that information about them. I want something that will last. The MDR-V6's have lasted at least 10 years if not longer. I've only had to replace the earpads. I want something that *covers* my ear *not* something that sits *on* my ear. Those that sit *on* my ears are uncomfortable after a very short while. Merry Christmas and 73, Joel - W4JBB __ 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] Noise Cancelling Headphones
On 12/25/2013 8:22 PM, Randy Farmer wrote: The Radiosport RS 20 headphones are the way to go. They're not cheap, but they really do the job. They have NO electronic circuitry to give RFI problems, just 24 dB of noise reduction due to their excellent acoustic isolation. I tried them, and found them to be VERY VERY uncomfortable, to the point of being instruments of torture. I'm a contester, and often am in the chair for 20-30 hours in a weekend. I couldn't wear the Radiosport cans for an hour. I'd rate the acoustic seal of CM500s comparable to Sony MDR7506 / MDR-V6, all of which I've owned and like a lot. In other words, if you're not happy with the MDR-V6, you won't be happy with the CM500. :) I have heard that east coast contesters love the Bose noise cancelling headphones, but I've never heard them. I did try a pair of Sennheiser noise cancelling headphones almost 20 years ago, and they seemed to work, but I wasn't being critical, and that was 20 years ago. :) The best, and most comfortable, noise isolating headphones I know of are the Etymotic Research ER4-series in-ear earsets, I own two pairs, and wore out one of the cables. They come with 3-4 generic ear fittings, and I found one of them to work well for me -- good isolation and comfort. Cost was about $200 eight years ago when I bought them. The greatest isolation is achieved with custom ear molds, which you buy from an audiologist who fits them to your ear canal. 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] Noise Cancelling Headphones
True noise cancelling headphones will cut noise far, far beyond anything acoustic isolation from ear pads can accomplish. I have a pair of Audio-Technia QuierPoint ATH-ANC1. They are on ear types so I didn't recommend them to the person asking for ones that cover the ears. They are very comfortable for me. When I fly, as the roar and whine of the big jet engines invades the cabin, I just switch them on and all the racket becomes a quite background purr. I often wear them for the entire 11 hours from the west coast of the USA to Europe, even if I'm not listening to any programs. The active circuitry in true noise-cancelling phones inverts the sound arriving and so actually cancels it out. The circuit takes a few seconds to adapt so when the attendant brings my drink she has no trouble waking me. 73 Ron AC7AC __ 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] Noise Cancelling Headphones
I use the Bose QC-15 as about all I do is CW and the audio on these is wonderful. The noise cancelling though is almost 100% perfect; my old Alpha with its blower is 18 from my head and with the QC-15 on I can't but just barely tell the amp is on or off. I was thinking about getting a headset with a mic though Bose does make the A20 for pilots, at $1100 for what is essentially the QC-15 with a boom mic, I'll pass. They do make a A100T snap on mic for the QC15 but they are $250 for just the mic. I was referred by quite a few people here to check out the Yamaha CM500 for a fine mic, quick match to the K3 and comfortable headsets at $59. I'm so happy with the Bose QC15 that I'm going to keep using these and am going to need to figure out another way to get a mic into the K3 in a way that will be convenient for contesting should I ever decide to do a phone contest. I have an Electrovoice RE-10 which would probably be nice needs no power maybe I can make a clamp-on boom that I can remove from the desk once the contest is over. I also have several condenser mics but they are for recording and would be excess and just problematic for ham use. Anyone have any suggestion of a removable boom mic other than the A100T that will attach to the QC-15 and make it simple to use and then remove when the contest is over? I don't want to use velcro. Thanks 73, Gary KA1J --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.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
