Re: [Elecraft] K4 observation
Wayne I seriously doubt this is an RF issue. TV is all digital and has no discrete audio carrier. TV RF interference would sound like white noise. This sounds more like an audio ground loop of some sort. > On June 18, 2021 10:33 PM Wayne Burdick wrote: > > > John, > > If the K4 is *off*, then there's no active circuitry involved. However, the > headphone plug-insertion detect circuit may involve an IC downstream that > could include a schottky diode junction -- a potential way a very strong > signal could be rectified right at the radio end of the cable. We're looking > at that. > > If the cable is not very well shielded, and the TV station is *very strong*, > I can imagine modern physics just barely covering this situation. It would > help if the headphone cable was about the length of an end-fed dipole at the > station's frequency. > > As for the K4 chassis itself: It's very well sealed (far better than the > K3/K3S). > > Wayne > N6KR > > > > > On Jun 18, 2021, at 3:36 PM, John Harper wrote: > > > > https://www.youtube.com/watch?v=u1XRaNpgQDI > > > > John AE5X > > https://ae5x.blogspot.com > > > >> Noticed that when the antenna are disconnected, and the K4 turned off, I > >> hear a local TV station in the headphones… Never happened on the K3. > > __ > > > __ > 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 w...@w2xj.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] K4 observation
John Would you put that under "Worked All Molars?" Paul KB9AVO On Fri, Jun 18, 2021, 10:35 PM Wayne Burdick wrote: > John, > > If the K4 is *off*, then there's no active circuitry involved. However, > the headphone plug-insertion detect circuit may involve an IC downstream > that could include a schottky diode junction -- a potential way a very > strong signal could be rectified right at the radio end of the cable. We're > looking at that. > > If the cable is not very well shielded, and the TV station is *very > strong*, I can imagine modern physics just barely covering this situation. > It would help if the headphone cable was about the length of an end-fed > dipole at the station's frequency. > > As for the K4 chassis itself: It's very well sealed (far better than the > K3/K3S). > > Wayne > N6KR > > > > > On Jun 18, 2021, at 3:36 PM, John Harper wrote: > > > > https://www.youtube.com/watch?v=u1XRaNpgQDI > > > > John AE5X > > https://ae5x.blogspot.com > > > >> Noticed that when the antenna are disconnected, and the K4 turned off, > I hear a local TV station in the headphones… Never happened on the K3. > > __ > > > __ > 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 pvandyke1...@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] K4 observation
John, If the K4 is *off*, then there's no active circuitry involved. However, the headphone plug-insertion detect circuit may involve an IC downstream that could include a schottky diode junction -- a potential way a very strong signal could be rectified right at the radio end of the cable. We're looking at that. If the cable is not very well shielded, and the TV station is *very strong*, I can imagine modern physics just barely covering this situation. It would help if the headphone cable was about the length of an end-fed dipole at the station's frequency. As for the K4 chassis itself: It's very well sealed (far better than the K3/K3S). Wayne N6KR > On Jun 18, 2021, at 3:36 PM, John Harper wrote: > > https://www.youtube.com/watch?v=u1XRaNpgQDI > > John AE5X > https://ae5x.blogspot.com > >> Noticed that when the antenna are disconnected, and the K4 turned off, I >> hear a local TV station in the headphones… Never happened on the K3. > __ __ 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] Koss SB/45 vs Yamaha CM500
On 6/18/2021 5:36 PM, Dana wrote: I replaced the set with a Koss SB/45 Very active contester K6LL likes a Koss headset, maybe that one. GM3SEK reported that Yamaha headsets are not available in the UK, and both he and his XYL like Koss headsets. 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
[Elecraft] Koss SB/45 vs Yamaha CM500
My CM500 died on me, looks like the electret element … I replaced the set with a Koss SB/45 which was cheaper and quite comfortable and plugs into the K3 as well (K4 too). The price of the CM500 had doubled up here in Canada for some reason, so the Koss looked more attractive. 73 Dana VE3DS __ 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] K4 observation
Greaat! This is NOT a big deal to me… let me know if I can help… Tom W4KX From: Wayne Burdick Sent: Friday, June 18, 2021 6:09 PM To: Tom Doligalski Cc: j...@audiosystemsgroup.com; elecraft@mailman.qth.net Subject: Re: [Elecraft] K4 observation We’re testing a fix. W elecraft.com On Jun 18, 2021, at 2:21 PM, Tom Doligalski via Elecraft wrote: Interesting, and possibly related (and I kind of forgot till I read Jim’s email). Noticed that when the antenna are disconnected, and the K4 turned off, I hear a local TV station in the headphones… Never happened on the K3. Headphones connected to the rear panel jack. Gonna get out the ferrites… Tom W4KX Sent from my iPad On Jun 18, 2021, at 2:07 PM, Jim Brown wrote: On 6/18/2021 3:58 AM, Tom Doligalski via Elecraft wrote: For years I used a Radiosport headset with my K3. Worked like a champ. Since I received my K4 I noticed annoying RFI-induced feedback on the Radiosport when operating SSB on the K4. Monitor is set to 0. I would blame that on the radio. Elecraft has a long history of Pin One Problems, which are a well known cause of RFI. I first alerted Wayne to this at least 15 years ago. Elecraft is not unique in the regard -- the last time I was at Dayton, several years ago, EVERY radio on display in booths that I was able to look at had obvious Pin One Problems. The following links were written nearly 20 years ago. Pro audio has mostly cleaned up its act. Ham radio is still in the dark ages. http://k9yc.com/Pin_1_Revisited.pdf http://k9yc.com/Pin_1_Revisited_Part_2.pdf 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 w...@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 n...@elecraft.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
[Elecraft] K4 observation
https://www.youtube.com/watch?v=u1XRaNpgQDI John AE5X https://ae5x.blogspot.com >Noticed that when the antenna are disconnected, and the K4 turned off, I hear >a local TV station in the headphones… Never happened on the K3. __ 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] K4 observation
We’re testing a fix. W elecraft.com > On Jun 18, 2021, at 2:21 PM, Tom Doligalski via Elecraft > wrote: > > Interesting, and possibly related (and I kind of forgot till I read Jim’s > email). > > Noticed that when the antenna are disconnected, and the K4 turned off, I hear > a local TV station in the headphones… Never happened on the K3. > > Headphones connected to the rear panel jack. > > Gonna get out the ferrites… > > Tom W4KX > > Sent from my iPad > >>> On Jun 18, 2021, at 2:07 PM, Jim Brown wrote: >>> >>> On 6/18/2021 3:58 AM, Tom Doligalski via Elecraft wrote: >>> For years I used a Radiosport headset with my K3. Worked like a champ. >>> Since I received my K4 I noticed annoying RFI-induced feedback on the >>> Radiosport when operating SSB on the K4. Monitor is set to 0. >> >> I would blame that on the radio. Elecraft has a long history of Pin One >> Problems, which are a well known cause of RFI. I first alerted Wayne to this >> at least 15 years ago. Elecraft is not unique in the regard -- the last time >> I was at Dayton, several years ago, EVERY radio on display in booths that I >> was able to look at had obvious Pin One Problems. The following links were >> written nearly 20 years ago. Pro audio has mostly cleaned up its act. Ham >> radio is still in the dark ages. >> >> http://k9yc.com/Pin_1_Revisited.pdf >> http://k9yc.com/Pin_1_Revisited_Part_2.pdf >> >> 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 w...@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 n...@elecraft.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] K4 observation
Interesting, and possibly related (and I kind of forgot till I read Jim’s email). Noticed that when the antenna are disconnected, and the K4 turned off, I hear a local TV station in the headphones… Never happened on the K3. Headphones connected to the rear panel jack. Gonna get out the ferrites… Tom W4KX Sent from my iPad > On Jun 18, 2021, at 2:07 PM, Jim Brown wrote: > > On 6/18/2021 3:58 AM, Tom Doligalski via Elecraft wrote: >> For years I used a Radiosport headset with my K3. Worked like a champ. Since >> I received my K4 I noticed annoying RFI-induced feedback on the Radiosport >> when operating SSB on the K4. Monitor is set to 0. > > I would blame that on the radio. Elecraft has a long history of Pin One > Problems, which are a well known cause of RFI. I first alerted Wayne to this > at least 15 years ago. Elecraft is not unique in the regard -- the last time > I was at Dayton, several years ago, EVERY radio on display in booths that I > was able to look at had obvious Pin One Problems. The following links were > written nearly 20 years ago. Pro audio has mostly cleaned up its act. Ham > radio is still in the dark ages. > > http://k9yc.com/Pin_1_Revisited.pdf > http://k9yc.com/Pin_1_Revisited_Part_2.pdf > > 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 w...@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
[Elecraft] KPA1500 operating posture
I have to temporarily re-arrange my amp table to troubleshoot one of my two amps. The only way to do it is to move the kpa1500to my main desk and place it on its left side with the rubber feet. I know heat rises but once the fans come on it should direct the heatout of the normal top vents. Is this a bad thing to do? BillK3WJV __ 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] Heil Pro 7 headset with KX3 - RF feedback?
It seems to depend on the headset being used. I have an IC-705 (my K-line is packed in storage currently) and have tried Bluetooth with it. Using several different BT headsets (Bose QC, Apple Air Pods, Avantree) it was an utter failure on CW. However, I recently got an Srhythm NC35 noise cancelling headset from Amazon. It works wonderfully on CW - zero latency to be detected. I operated several times in the CWops Wednesday night get togethers (high-speed CW) and THIS bluetooth headset was perfect. That being said, I am unaware what version of BT the ‘705 is using. But, one shouldn’t completely abandon the technology - it can work in certain circumstances. Jim / K7TXA > On Jun 18, 2021, at 1:23 PM, Jim Brown wrote: > > On 6/18/2021 12:04 PM, Rick NK7I wrote: >> Has anyone used rx audio via Bluetooth into their hearing aids? Any issues? > > The important (and killer) issue with Bluetooth is latency when you try to > run CW. The delay makes it impossible to send with any form of bug, paddle, > or straight key. The delay is also be problematic if you try to monitor > yourself on SSB. When I was doing live sound for large crowds outdoors, I > heard very professional announcers slow down and stop talking when they heard > themselves coming back through the system 100 msec late. > > There are (at least) two forms of BlueTooth. The one for shorter distances > (lower power) has less latency than the other. Both would be a killer for CW, > but the shorter one might not be too bad for monitoring our own transmission > on SSB. > > 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 w6...@me.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] Heil Pro 7 headset with KX3 - RF feedback?
On 6/18/2021 12:04 PM, Rick NK7I wrote: Has anyone used rx audio via Bluetooth into their hearing aids? Any issues? The important (and killer) issue with Bluetooth is latency when you try to run CW. The delay makes it impossible to send with any form of bug, paddle, or straight key. The delay is also be problematic if you try to monitor yourself on SSB. When I was doing live sound for large crowds outdoors, I heard very professional announcers slow down and stop talking when they heard themselves coming back through the system 100 msec late. There are (at least) two forms of BlueTooth. The one for shorter distances (lower power) has less latency than the other. Both would be a killer for CW, but the shorter one might not be too bad for monitoring our own transmission on SSB. 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] Heil Pro 7 headset with KX3 - RF feedback?
Slight topic change, apologies. Has anyone used rx audio via Bluetooth into their hearing aids? Any issues? I was hoping the K4 would have BT audio, but it doesn't. So the next best option would be to send the sound card audio to BT in a computer, linked to the aids or headset... I don't have my K4 yet, so it's a guess. 73, Rick NK7I On 6/18/2021 11:58 AM, Jim Brown wrote: On 6/18/2021 11:34 AM, Ed Cole wrote: I wear hearing aids and the CM500 immediately set up a loud howl the minute I put them on (even with not being plugged into the radio). Apparently my hearing aid gain is so high the CM500 provided feedback to the hearing aid mics - I have two with my OTE (over the ear) hearing aids. That's acoustic interaction of the earphones with your aids, and depends on the placement of the mics in the aids. Mics for the aids are picking up their own amplified sound, because the acoustic space around the ear is modified by the presence of the earphones. In sound systems, we call that feedback. It makes sense that different headphones would interact differently with aids, depending on the construction of both. My XYL uses aids where the mics are outside the ear. She doesn't use headphones when she's wearing them. 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 rick.n...@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] Heil Pro 7 headset with KX3 - RF feedback?
On 6/18/2021 11:34 AM, Ed Cole wrote: I wear hearing aids and the CM500 immediately set up a loud howl the minute I put them on (even with not being plugged into the radio). Apparently my hearing aid gain is so high the CM500 provided feedback to the hearing aid mics - I have two with my OTE (over the ear) hearing aids. That's acoustic interaction of the earphones with your aids, and depends on the placement of the mics in the aids. Mics for the aids are picking up their own amplified sound, because the acoustic space around the ear is modified by the presence of the earphones. In sound systems, we call that feedback. It makes sense that different headphones would interact differently with aids, depending on the construction of both. My XYL uses aids where the mics are outside the ear. She doesn't use headphones when she's wearing them. 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] Heil Pro 7 headset with KX3 - RF feedback?
Here we go again: "The favorite headset topic". Most of you who have been on this list a few years might recall when I tried out a Yamaha CM500 headset. I wear hearing aids and the CM500 immediately set up a loud howl the minute I put them on (even with not being plugged into the radio). Apparently my hearing aid gain is so high the CM500 provided feedback to the hearing aid mics - I have two with my OTE (over the ear) hearing aids. I sold the brand new Yamaha to a reader for a good discount. For years I have worn a Sony stereo headset. So to add a boom mic I bought the AntLion unit. It has a nice earth magnet button that one sticks onto the headset. The mic boom attaches nicely with magnetics. On air reports good with standard or cardiod pattern selected. I've only used it with my K3/10, so this does not directly answer use on the KX3 (which I also have). Big soft foam ear muffs are comfortable over my hearing aids for hours of use. "If it ain't broke, why change". I use a venerable old Heil HM10 desk mic on the K3 when not needing a boom mic. Ed - KL7UW __ 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] WANTED: P3 WITH EXTERNAL MONITOR OUTPUT
Hi Paul, Thanks very much for answering the post. Can you please send a picture or two and do you have the manual to go with it? 73’s Greg N9GB From: Paul GACEK Date: Friday, June 18, 2021 at 1:28 PM To: greg best Cc: Subject: Re: [Elecraft] WANTED: P3 WITH EXTERNAL MONITOR OUTPUT Hi Greg I have a spare one that I’ll part with for $775 plus $25 shipping. It has what you want. Paul W6PNG www.nomadic.blog On Jun 18, 2021, at 11:10 AM, greg best wrote: I am looking for a P3 in good condition that has external monitor output capability. I am located in Kansas City. 73’s Greg N9GB 816-792-2913 __ 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 paul.ga...@me.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] WANTED: P3 WITH EXTERNAL MONITOR OUTPUT
Hi Greg I have a spare one that I’ll part with for $775 plus $25 shipping. It has what you want. Paul W6PNG www.nomadic.blog > On Jun 18, 2021, at 11:10 AM, greg best wrote: > > I am looking for a P3 in good condition that has external monitor output > capability. I am located in Kansas City. > > > > 73’s > > Greg N9GB > > 816-792-2913 > > __ > 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 paul.ga...@me.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
[Elecraft] WANTED: P3 WITH EXTERNAL MONITOR OUTPUT
I am looking for a P3 in good condition that has external monitor output capability. I am located in Kansas City. 73’s Greg N9GB 816-792-2913 __ 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] K4 observation
On 6/18/2021 3:58 AM, Tom Doligalski via Elecraft wrote: For years I used a Radiosport headset with my K3. Worked like a champ. Since I received my K4 I noticed annoying RFI-induced feedback on the Radiosport when operating SSB on the K4. Monitor is set to 0. I would blame that on the radio. Elecraft has a long history of Pin One Problems, which are a well known cause of RFI. I first alerted Wayne to this at least 15 years ago. Elecraft is not unique in the regard -- the last time I was at Dayton, several years ago, EVERY radio on display in booths that I was able to look at had obvious Pin One Problems. The following links were written nearly 20 years ago. Pro audio has mostly cleaned up its act. Ham radio is still in the dark ages. http://k9yc.com/Pin_1_Revisited.pdf http://k9yc.com/Pin_1_Revisited_Part_2.pdf 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
[Elecraft] [K2] FS: K2 with new KAT2 and options - PS, also has IMA
PS ... The K2 also has the IMA, "K2 Internal Mic Adaptor" configured for Heil microphone at the moment. Hello, See https://wilcoxengineering.com/2020/06/09/selling-extra-equipment for info and photos. If you're interested in buying, contact me off list. Cheers, Alan Alan D. Wilcox, W3DVX (K2-5373, K3-40, SKCC 22955) 570-916-9590 (cell, text) https://WilcoxEngineering.com http://www.eham.net/reviews/detail/6768 ... Elecraft Client Comments http://amazon.com/author/alandwilcox Williamsport, PA 17701 __ 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] K4 observation
Tom, We'll try to duplicate and correct this. I'll get back to you. 73, Wayne N6KR > On Jun 18, 2021, at 3:58 AM, Tom Doligalski via Elecraft > wrote: > > For years I used a Radiosport headset with my K3. Worked like a champ. Since > I received my K4 I noticed annoying RFI-induced feedback on the Radiosport > when operating SSB on the K4. Monitor is set to 0. No trouble on the internal > speaker. > > I’m gonna try ferrites next. > > Surprised to see this on the K4 and not on the K3! > > Tom W4KX __ 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
[Elecraft] 73CNC.com knob for K3
I am moving my station to a remote site and can't benefit from the great tuning feel from this heavyweight N8BX 73CNC.com knob. This is the like new condition black main tuning knob for the K3/s without the ball bearing finger dimple. I prefer this style as the tuning is extremely smooth any way you use it. $110. including postage to the US. Howard AE3T __ 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] test-K7HP
I wouldn't go that far. I too have been dealing with CLINK issues. This was one of 6 messages in the spam filter. At least it did not get bounced and never make it too the spam filter. I keep hoping the Bayesian filtering would start working... 73 de KA0OUV - Original Message - From: "Ian, NV4C" To: "HP" , "Elecraft List (To: Address)" Cc: a...@mailman.qth.net Sent: Thursday, June 17, 2021 6:03:23 PM Subject: Re: [Elecraft] test-K7HP Congratulations! You seem to have exorcised CenturyLink's demons! 73 de, Ian, NV4C On 6/17/21 6:36 PM, HP via Elecraft wrote: > centurylink demons __ 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
[Elecraft] K4 observation
For years I used a Radiosport headset with my K3. Worked like a champ. Since I received my K4 I noticed annoying RFI-induced feedback on the Radiosport when operating SSB on the K4. Monitor is set to 0. No trouble on the internal speaker. I’m gonna try ferrites next. Surprised to see this on the K4 and not on the K3! Tom W4KX Sent from my iPad __ 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
