Re: [Elecraft] K3s Line Out (stereo)
Hi Dick . . . Good to see you on the reflector again. One "earthly reason" for having four people wear headphones during FD is when you are wanting to train new operators. By monitoring both sides of the contact they can better grasp what's going on and practice copying the exchanges (especially so for CW students). We have used both the Behringer AMP800 (http://www.musictribe.com/Categories/Behringer/Signal-Processors/Headphone-Amplifiers/AMP800/p/P0331) and the Rolls HA-43 (http://www.rolls.com/product.php?pid=HA43), and both amps work fine at 100 watts with no RFI. They have also been useful for summertime QRP sprints (e.g., Bumble Bee and Skeeter Hunt) where signals, weak to begin with, are further drowned out by outdoor noises. Some QRP rigs don't have speakers and those that do are often not usable outdoors. 73, Kent K9ZTV On 1/16/2019 10:47 AM, RIchard Williams via Elecraft wrote: Like Walter, I use the Behringer HA-400 with my K3 on Field Day. You can have up to four individuals on headphones (no earthly idea why you would have four) ... --- This email has been checked for viruses by AVG. https://www.avg.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] K3s Line Out (stereo)
On 1/16/2019 4:49 AM, K9MA wrote: I had to add isolation transformers for the same reason the K3 has them on the line outputs. If you had to add isolation transformers, your station is not properly bonded. There is NO good reason for needing transformers if all the equipment in a station is properly bonded. http://k9yc.com/GroundingAndAudio.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
Re: [Elecraft] K3s Line Out (stereo)
There's no mystery at all. The headphone outputs of two radios go to a switching system with a common ground. There inevitably is a small AC voltage difference between the chassis of the two radios, and from the radios to the rest of the system ground, which results in some current flowing in the headphone cable ground wires. Bonding everything together with braid might have helped, but it might have been hard to get the impedance low enough. The common ground was an oversight on my part, but avoiding it would have required third relay pole and isolated headphone jacks. Rather than rebuild the switching system, I inserted the transformers. They serve exactly the same purpose as the K3 internal ones in the line outputs. I'm not sure how other SO2R systems deal with the problem, but it has to be either isolation transformers of switched headphone grounds. Or, as does one of my friends, completely isolated left and right headphones. 73, Scott K9MA On 1/16/2019 09:36, Don Wilhelm wrote: The K3/K3S Line Out already has isolation transformers internal to the K3. I do not understand any need to put additional transformers in the audio path(s). What happens if you cable to LINE OUT signals to a computer soundcard (with both left and right channels - some only are one channel if the input is set for MIC)? You should hear the main RX in the left channel and the SubRX in the right. Your external transformers/cabling raises the question of "is it the K3S or is it your external devices that are causing the problem". Time to strip everything down to the essentials and begin to determine where the "failure" is occurring. Test one thing at a time. 73, Don W3FPR On 1/15/2019 8:00 PM, Dave Sublette wrote: My K3s arrived over the weekend and I have been setting it up. I am using the rear Audio jacks to drive either headphones, or the Line out to drive an amplifier and two speakers in the stereo mode. The headphone jack has stereo output ok. But the line out only has right channel audio. Left channel has nothing but a low hum. I am testing them one at a time, using the same cable. So it is not a case of a bad cable. The plug inserts to the same depth in both the headphone and line out jacks, so I believe the plug is properly inserted, I have been through both the Main Menu and Config menus, item by item. I see nothing that would give the option to turn off the left channel of the line out. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html 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] K3s Line Out (stereo)
Like Walter, I use the Behringer HA-400 with my K3 on Field Day. You can have up to four individuals on headphones (no earthly idea why you would have four), and each can control the volume to their headsets. If you have visitors and want to use the speaker too, that can be done in the menu setting to have both speaker and headphones on. Never had a problem with RFI, but we are only running the K3 barefoot. Dick, K8ZTT On Wednesday, January 16, 2019, 9:14:54 AM MST, K9MA wrote: On 1/16/2019 10:00, Walter Underwood wrote: > When I need to drive two sets of headphones, I use a $25 Behringer HA400 > headphone distribution amp. > > https://www.amazon.com/Behringer-HA400-Ultra-Compact-4-Channel-Headphone/dp/B000KIPT30 Any trouble with RFI? 73, Scott K9MA -- 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 richarddw1...@yahoo.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] K3s Line Out (stereo)
I agree but in the case of using two radios, two pair of headphones, a switching system and getting hum indicates a serious deficiency in the station interconnection and ground scheme. Everything should be at the same potential, thus no current would flow. As they say "sum-tin not right". 73 Bob, K4TAX On 1/16/2019 10:00 AM, Walter Underwood wrote: When I need to drive two sets of headphones, I use a $25 Behringer HA400 headphone distribution amp. https://www.amazon.com/Behringer-HA400-Ultra-Compact-4-Channel-Headphone/dp/B000KIPT30 wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) __ 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] K3s Line Out (stereo)
Haven’t noticed any. It is a simple device, a quad op-amp and four pots in a little metal box. It runs off 12 V, so it can plug into the shack supply. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Jan 16, 2019, at 8:14 AM, K9MA wrote: > > On 1/16/2019 10:00, Walter Underwood wrote: >> When I need to drive two sets of headphones, I use a $25 Behringer HA400 >> headphone distribution amp. >> >> https://www.amazon.com/Behringer-HA400-Ultra-Compact-4-Channel-Headphone/dp/B000KIPT30 > > Any trouble with RFI? > > 73, > > Scott K9MA > > -- > 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 wun...@wunderwood.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3s Line Out (stereo)
On 1/16/2019 10:00, Walter Underwood wrote: When I need to drive two sets of headphones, I use a $25 Behringer HA400 headphone distribution amp. https://www.amazon.com/Behringer-HA400-Ultra-Compact-4-Channel-Headphone/dp/B000KIPT30 Any trouble with RFI? 73, Scott K9MA -- 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] K3s Line Out (stereo)
When I need to drive two sets of headphones, I use a $25 Behringer HA400 headphone distribution amp. https://www.amazon.com/Behringer-HA400-Ultra-Compact-4-Channel-Headphone/dp/B000KIPT30 wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Jan 16, 2019, at 7:36 AM, Don Wilhelm wrote: > > The K3/K3S Line Out already has isolation transformers internal to the K3. I > do not understand any need to put additional transformers in the audio > path(s). > > What happens if you cable to LINE OUT signals to a computer soundcard (with > both left and right channels - some only are one channel if the input is set > for MIC)? You should hear the main RX in the left channel and the SubRX in > the right. > > Your external transformers/cabling raises the question of "is it the K3S or > is it your external devices that are causing the problem". > > Time to strip everything down to the essentials and begin to determine where > the "failure" is occurring. Test one thing at a time. > > 73, > Don W3FPR > > On 1/15/2019 8:00 PM, Dave Sublette wrote: >> My K3s arrived over the weekend and I have been setting it up. I am using >> the rear Audio jacks to drive either headphones, or the Line out to drive >> an amplifier and two speakers in the stereo mode. >> The headphone jack has stereo output ok. But the line out only has right >> channel audio. Left channel has nothing but a low hum. >> I am testing them one at a time, using the same cable. So it is not a case >> of a bad cable. The plug inserts to the same depth in both the headphone >> and line out jacks, so I believe the plug is properly inserted, >> I have been through both the Main Menu and Config menus, item by item. I >> see nothing that would give the option to turn off the left channel of the >> line out. > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3s Line Out (stereo)
The K3/K3S Line Out already has isolation transformers internal to the K3. I do not understand any need to put additional transformers in the audio path(s). What happens if you cable to LINE OUT signals to a computer soundcard (with both left and right channels - some only are one channel if the input is set for MIC)? You should hear the main RX in the left channel and the SubRX in the right. Your external transformers/cabling raises the question of "is it the K3S or is it your external devices that are causing the problem". Time to strip everything down to the essentials and begin to determine where the "failure" is occurring. Test one thing at a time. 73, Don W3FPR On 1/15/2019 8:00 PM, Dave Sublette wrote: My K3s arrived over the weekend and I have been setting it up. I am using the rear Audio jacks to drive either headphones, or the Line out to drive an amplifier and two speakers in the stereo mode. The headphone jack has stereo output ok. But the line out only has right channel audio. Left channel has nothing but a low hum. I am testing them one at a time, using the same cable. So it is not a case of a bad cable. The plug inserts to the same depth in both the headphone and line out jacks, so I believe the plug is properly inserted, I have been through both the Main Menu and Config menus, item by item. I see nothing that would give the option to turn off the left channel of the line out. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3s Line Out (stereo)
The headphone outputs from my radios are switched with some relays. The switching system has a common ground, which creates a ground loop, resulting in 60 Hz hum in the headphones. (Call it common impedance coupling, if you prefer.) I should have isolated the headphone grounds, but a path of less resistance was to insert the isolation transformers. They are just common 600 Ohm transformers, like the ones in the K3 line outputs, but they're a bit lossy driving headphones. 73, Scott K9MA On 1/16/2019 09:02, Bob McGraw K4TAX wrote: I see no need for isolation transformers with headphones. Likely the transformers is the reason the HP output won't drive a pair of headphones. Isolation transformers? Are they 3 winding hybrid transformers? I've used them in professional audio installations but they are rare and expensive. 73 Bob, K4TAX On 1/15/2019 11:23 PM, K9MA wrote: I found that the level at headphone output, at least the rear panel one, was too low to drive two pairs of headphones in parallel in my setup, which includes some isolation transformers. The speaker output works fine with the headphones. (Don't try this with super sensitive low impedance headphones.) I just wired a switch to an external speaker. 73, Scott K9MA On 1/15/2019 20:51, Nr4c wrote: Why use Line Out for speakers. There is a perfectly good jack marked Speakers right next to the Phones jack. Be sure and use a Stereo plug but it is for wait for it. Speakers! -- 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] K3s Line Out (stereo)
I see no need for isolation transformers with headphones. Likely the transformers is the reason the HP output won't drive a pair of headphones. Isolation transformers? Are they 3 winding hybrid transformers? I've used them in professional audio installations but they are rare and expensive. 73 Bob, K4TAX On 1/15/2019 11:23 PM, K9MA wrote: I found that the level at headphone output, at least the rear panel one, was too low to drive two pairs of headphones in parallel in my setup, which includes some isolation transformers. The speaker output works fine with the headphones. (Don't try this with super sensitive low impedance headphones.) I just wired a switch to an external speaker. 73, Scott K9MA On 1/15/2019 20:51, Nr4c wrote: Why use Line Out for speakers. There is a perfectly good jack marked Speakers right next to the Phones jack. Be sure and use a Stereo plug but it is for wait for it. Speakers! __ 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 rmcg...@blomand.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] K3s Line Out (stereo)
My station has a relay system for switching the headphones between two different radios, among other things. I had to add isolation transformers for the same reason the K3 has them on the line outputs. The loss in the transformers reduces the audio level too much for the rear panel headphone jack to drive two sets of the low sensitivity headphones I use. And I don't want a cable in the way to the front panel. That's why it's "complicated". 73, Scott K9MA "Everything should be as simple as possible, but no simpler." -- Albert Einstein On 1/15/2019 23:38, Don Wilhelm wrote: Last Field Day, my K3 was used at the CW station. Two sets of headphones. One for the operator and one for the logger. One was plugged into the rear panel Phones jack and the other was plugged into the front panel jack. No problem, no splitter. Ok, if there were folks nearby who wanted to listen in, we would simply turn on SPKR+PHONES in the menu, and the speaker could also be heard. Very versatile. Why make it complicated - the K3 gives us the tools to do it 'the easy way'. 73, Don W3FPR On 1/15/2019 11:23 PM, K9MA wrote: I found that the level at headphone output, at least the rear panel one, was too low to drive two pairs of headphones in parallel in my setup, which includes some isolation transformers. The speaker output works fine with the headphones. (Don't try this with super sensitive low impedance headphones.) I just wired a switch to an external speaker. 73, Scott K9MA On 1/15/2019 20:51, Nr4c wrote: Why use Line Out for speakers. There is a perfectly good jack marked Speakers right next to the Phones jack. Be sure and use a Stereo plug but it is for wait for it. Speakers! __ 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] K3s Line Out (stereo)
Thanks Don. WAARC has been doing just that for about 8 or nine years. Works great. But some folks just want to make it hard. Sent from my iPhone ...nr4c. bill > On Jan 16, 2019, at 12:38 AM, Don Wilhelm wrote: > > Last Field Day, my K3 was used at the CW station. Two sets of headphones. > One for the operator and one for the logger. > One was plugged into the rear panel Phones jack and the other was plugged > into the front panel jack. No problem, no splitter. > Ok, if there were folks nearby who wanted to listen in, we would simply turn > on SPKR+PHONES in the menu, and the speaker could also be heard. > > Very versatile. Why make it complicated - the K3 gives us the tools to do it > 'the easy way'. > > 73, > Don W3FPR > >> On 1/15/2019 11:23 PM, K9MA wrote: >> I found that the level at headphone output, at least the rear panel one, was >> too low to drive two pairs of headphones in parallel in my setup, which >> includes some isolation transformers. The speaker output works fine with the >> headphones. (Don't try this with super sensitive low impedance headphones.) >> I just wired a switch to an external speaker. >> 73, >> Scott K9MA >>> On 1/15/2019 20:51, Nr4c wrote: >>> Why use Line Out for speakers. There is a perfectly good jack marked >>> Speakers right next to the Phones jack. Be sure and use a Stereo plug but >>> it is for wait for it. Speakers! > __ > 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...@widomaker.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] K3s Line Out (stereo)
Last Field Day, my K3 was used at the CW station. Two sets of headphones. One for the operator and one for the logger. One was plugged into the rear panel Phones jack and the other was plugged into the front panel jack. No problem, no splitter. Ok, if there were folks nearby who wanted to listen in, we would simply turn on SPKR+PHONES in the menu, and the speaker could also be heard. Very versatile. Why make it complicated - the K3 gives us the tools to do it 'the easy way'. 73, Don W3FPR On 1/15/2019 11:23 PM, K9MA wrote: I found that the level at headphone output, at least the rear panel one, was too low to drive two pairs of headphones in parallel in my setup, which includes some isolation transformers. The speaker output works fine with the headphones. (Don't try this with super sensitive low impedance headphones.) I just wired a switch to an external speaker. 73, Scott K9MA On 1/15/2019 20:51, Nr4c wrote: Why use Line Out for speakers. There is a perfectly good jack marked Speakers right next to the Phones jack. Be sure and use a Stereo plug but it is for wait for it. Speakers! __ 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] K3s Line Out (stereo)
I found that the level at headphone output, at least the rear panel one, was too low to drive two pairs of headphones in parallel in my setup, which includes some isolation transformers. The speaker output works fine with the headphones. (Don't try this with super sensitive low impedance headphones.) I just wired a switch to an external speaker. 73, Scott K9MA On 1/15/2019 20:51, Nr4c wrote: Why use Line Out for speakers. There is a perfectly good jack marked Speakers right next to the Phones jack. Be sure and use a Stereo plug but it is for wait for it. Speakers! -- 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] K3s Line Out (stereo)
Do you have a sub-receiver? Without it, I don’t think you have any signal to hear. Why use Line Out for speakers. There is a perfectly good jack marked Speakers right next to the Phones jack. Be sure and use a Stereo plug but it is for wait for it. Speakers! Sent from my iPhone ...nr4c. bill > On Jan 15, 2019, at 9:33 PM, Dave Sublette wrote: > > yes > > > On Tue, Jan 15, 2019 at 9:05 PM Charles Jack Hawley > wrote: > >> Config-Spkrs set to 2? >> >> Chuck Jack >> KE9UW >> >> Sent from my iPhone, cjack >> >>> On Jan 15, 2019, at 7:01 PM, Dave Sublette wrote: >>> >>> My K3s arrived over the weekend and I have been setting it up. I am using >>> the rear Audio jacks to drive either headphones, or the Line out to drive >>> an amplifier and two speakers in the stereo mode. >>> >>> The headphone jack has stereo output ok. But the line out only has right >>> channel audio. Left channel has nothing but a low hum. >>> >>> I am testing them one at a time, using the same cable. So it is not a >> case >>> of a bad cable. The plug inserts to the same depth in both the headphone >>> and line out jacks, so I believe the plug is properly inserted, >>> >>> I have been through both the Main Menu and Config menus, item by item. I >>> see nothing that would give the option to turn off the left channel of >> the >>> line out. >>> >>> Anyone have any suggestions? >>> >>> Thanks, >>> >>> 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 c-haw...@illinois.edu >> > __ > 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...@widomaker.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] K3s Line Out (stereo)
yes On Tue, Jan 15, 2019 at 9:05 PM Charles Jack Hawley wrote: > Config-Spkrs set to 2? > > Chuck Jack > KE9UW > > Sent from my iPhone, cjack > > > On Jan 15, 2019, at 7:01 PM, Dave Sublette wrote: > > > > My K3s arrived over the weekend and I have been setting it up. I am using > > the rear Audio jacks to drive either headphones, or the Line out to drive > > an amplifier and two speakers in the stereo mode. > > > > The headphone jack has stereo output ok. But the line out only has right > > channel audio. Left channel has nothing but a low hum. > > > > I am testing them one at a time, using the same cable. So it is not a > case > > of a bad cable. The plug inserts to the same depth in both the headphone > > and line out jacks, so I believe the plug is properly inserted, > > > > I have been through both the Main Menu and Config menus, item by item. I > > see nothing that would give the option to turn off the left channel of > the > > line out. > > > > Anyone have any suggestions? > > > > Thanks, > > > > 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 c-haw...@illinois.edu > __ 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] K3s Line Out (stereo)
My K3s arrived over the weekend and I have been setting it up. I am using the rear Audio jacks to drive either headphones, or the Line out to drive an amplifier and two speakers in the stereo mode. The headphone jack has stereo output ok. But the line out only has right channel audio. Left channel has nothing but a low hum. I am testing them one at a time, using the same cable. So it is not a case of a bad cable. The plug inserts to the same depth in both the headphone and line out jacks, so I believe the plug is properly inserted, I have been through both the Main Menu and Config menus, item by item. I see nothing that would give the option to turn off the left channel of the line out. Anyone have any suggestions? Thanks, 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
