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K4 Headphones Q

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Jim GM

K4 Headphones Q

I have Bose QC-35 headphones. Noise canceling does not work on any radio when you use the cord. Headphones work well with a Bluetooth connection.What kind of device do I use, if and when my K4 is delivered?Also on the K4 can a USB port expander be used on the K4 with multiple devices and what is the K4 limited to?Jim K9TFSent from my T-Mobile 4G LTE Device
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Gary Smith-2

Re: K4 Headphones Q

Jim,

I only use my Bose QC-35 when:

1. on the cell phone.
2. mowing the yard/tuning my motorcycle
3. whenever using the K3 & K3s.

The noise cancelling works perfectly with
the blower from the Alpha 77SX right next
to me, I only hear what is coming in from
the radio. Why your QC-35 does not noise
cancel when attached via cord is not
normal, mine is a Godsend.

73,

Gary
KA1J

>
> I have Bose QC-35 headphones. Noise canceling does not work on any
> radio when you use the cord. Headphones work well with a Bluetooth
> connection.What kind of device do I use, if and when my K4 is
> delivered?Also on the K4 can a USB port expander be used on the K4
> with multiple devices and what is the K4 limited to?Jim K9TFSent
> from my T-Mobile 4G LTE Device
> ______________________________________________________________
> Elecraft mailing list Home:
> http://mailman.qth.net/mailman/listinfo/elecraft Help:
> http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
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Edward H Russell

Re: K4 Headphones Q

I also use a QC-35. When plugged in with a cord, the power must be on for
the noise cancelling to work. That also turns on the DSP which greatly
improves audio quality.

ED / W2RF

-----Original Message-----
From: [hidden email] <[hidden email]> On
Behalf Of Gary Smith
Sent: Tuesday, October 13, 2020 2:01 PM
To: [hidden email]
Subject: Re: [Elecraft] K4 Headphones Q

Jim,

I only use my Bose QC-35 when:

1. on the cell phone.
2. mowing the yard/tuning my motorcycle
3. whenever using the K3 & K3s.

The noise cancelling works perfectly with the blower from the Alpha 77SX
right next to me, I only hear what is coming in from the radio. Why your
QC-35 does not noise cancel when attached via cord is not normal, mine is a
Godsend.

73,

Gary
KA1J

>
> I have Bose QC-35 headphones. Noise canceling does not work on any
> radio when you use the cord. Headphones work well with a Bluetooth
> connection.What kind of device do I use, if and when my K4 is
> delivered?Also on the K4 can a USB port expander be used on the K4
> with multiple devices and what is the K4 limited to?Jim K9TFSent from
> my T-Mobile 4G LTE Device
> ______________________________________________________________
> Elecraft mailing list Home:
> http://mailman.qth.net/mailman/listinfo/elecraft Help:
> http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net Please help support this email
> list: http://www.qsl.net/donate.html Message delivered to
> [hidden email]

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N7US

Re: K4 Headphones Q

I just bought a pair yesterday at a closeout price of $170 from my local Costco. They have been discontinued. Costco online is now out of stock, but some stores still have them. Amazon has them for $199 now.

My favorite headphones up to now has been Sennheiser HD 280 PRO but these sound great and eliminate the noise from my KPA1500 with the fan on #2 and a nearby water heater fan. No comparison with my old QC2 headphones.

73, Jim N7US

-----Original Message-----

I also use a QC-35. When plugged in with a cord, the power must be on for the noise cancelling to work. That also turns on the DSP which greatly improves audio quality.

ED / W2RF

-----Original Message-----

Jim,

I only use my Bose QC-35 when:

1. on the cell phone.
2. mowing the yard/tuning my motorcycle
3. whenever using the K3 & K3s.

The noise cancelling works perfectly with the blower from the Alpha 77SX right next to me, I only hear what is coming in from the radio. Why your
QC-35 does not noise cancel when attached via cord is not normal, mine is a Godsend.

73,

Gary
KA1J

>
> I have Bose QC-35 headphones. Noise canceling does not work on any
> radio when you use the cord. Headphones work well with a Bluetooth
> connection.What kind of device do I use, if and when my K4 is
> delivered?Also on the K4 can a USB port expander be used on the K4
> with multiple devices and what is the K4 limited to?Jim K9TFSent from
> my T-Mobile 4G LTE Device
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Richard Thorne-4

Re: K4 Headphones Q

Do the QC-35 rest on your ear or are they over the ear?

Rich - N5ZC

On 10/14/2020 7:59 AM, Jim McDonald wrote:

> I just bought a pair yesterday at a closeout price of $170 from my local Costco. They have been discontinued. Costco online is now out of stock, but some stores still have them. Amazon has them for $199 now.
>
> My favorite headphones up to now has been Sennheiser HD 280 PRO but these sound great and eliminate the noise from my KPA1500 with the fan on #2 and a nearby water heater fan. No comparison with my old QC2 headphones.
>
> 73, Jim N7US
>
> -----Original Message-----
>
>
> I also use a QC-35. When plugged in with a cord, the power must be on for the noise cancelling to work. That also turns on the DSP which greatly improves audio quality.
>
> ED / W2RF
>
>
>
>
> -----Original Message-----
>
> Jim,
>
> I only use my Bose QC-35 when:
>
> 1. on the cell phone.
> 2. mowing the yard/tuning my motorcycle
> 3. whenever using the K3 & K3s.
>
> The noise cancelling works perfectly with the blower from the Alpha 77SX right next to me, I only hear what is coming in from the radio. Why your
> QC-35 does not noise cancel when attached via cord is not normal, mine is a Godsend.
>
> 73,
>
> Gary
> KA1J
>
>> I have Bose QC-35 headphones. Noise canceling does not work on any
>> radio when you use the cord. Headphones work well with a Bluetooth
>> connection.What kind of device do I use, if and when my K4 is
>> delivered?Also on the K4 can a USB port expander be used on the K4
>> with multiple devices and what is the K4 limited to?Jim K9TFSent from
>> my T-Mobile 4G LTE Device
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]

Edward H Russell

Re: K4 Headphones Q

They are over ear, which helps make the noise cancelling extremely effective, and also the headset is not tiring for long periods of use in contests, for instance. The prime day price of $199 on amazon is an excellent buy in my opinion.

ED / W2RF

-----Original Message-----
From: [hidden email] <[hidden email]> On Behalf Of Richard Thorne
Sent: Wednesday, October 14, 2020 9:09 AM
To: [hidden email]
Subject: Re: [Elecraft] K4 Headphones Q

Do the QC-35 rest on your ear or are they over the ear?

Rich - N5ZC

On 10/14/2020 7:59 AM, Jim McDonald wrote:

> I just bought a pair yesterday at a closeout price of $170 from my local Costco. They have been discontinued. Costco online is now out of stock, but some stores still have them. Amazon has them for $199 now.
>
> My favorite headphones up to now has been Sennheiser HD 280 PRO but these sound great and eliminate the noise from my KPA1500 with the fan on #2 and a nearby water heater fan. No comparison with my old QC2 headphones.
>
> 73, Jim N7US
>
> -----Original Message-----
>
>
> I also use a QC-35. When plugged in with a cord, the power must be on for the noise cancelling to work. That also turns on the DSP which greatly improves audio quality.
>
> ED / W2RF
>
>
>
>
> -----Original Message-----
>
> Jim,
>
> I only use my Bose QC-35 when:
>
> 1. on the cell phone.
> 2. mowing the yard/tuning my motorcycle 3. whenever using the K3 &
> K3s.
>
> The noise cancelling works perfectly with the blower from the Alpha
> 77SX right next to me, I only hear what is coming in from the radio.
> Why your
> QC-35 does not noise cancel when attached via cord is not normal, mine is a Godsend.
>
> 73,
>
> Gary
> KA1J
>
>> I have Bose QC-35 headphones. Noise canceling does not work on any
>> radio when you use the cord. Headphones work well with a Bluetooth
>> connection.What kind of device do I use, if and when my K4 is
>> delivered?Also on the K4 can a USB port expander be used on the K4
>> with multiple devices and what is the K4 limited to?Jim K9TFSent
>> from my T-Mobile 4G LTE Device
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net Please help support this email
> list: http://www.qsl.net/donate.html Message delivered to
> [hidden email]

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N7US

Re: K4 Headphones Q

In reply to this post by Richard Thorne-4

Over the ear - very comfortable.

Top rated (87) by Consumer Reports - tied with the new model.

73, Jim N7US

-----Original Message-----

Do the QC-35 rest on your ear or are they over the ear?

Rich - N5ZC

On 10/14/2020 7:59 AM, Jim McDonald wrote:

> I just bought a pair yesterday at a closeout price of $170 from my local Costco. They have been discontinued. Costco online is now out of stock, but some stores still have them. Amazon has them for $199 now.
>
> My favorite headphones up to now has been Sennheiser HD 280 PRO but these sound great and eliminate the noise from my KPA1500 with the fan on #2 and a nearby water heater fan. No comparison with my old QC2 headphones.
>
> 73, Jim N7US
>
> -----Original Message-----
>
>
> I also use a QC-35. When plugged in with a cord, the power must be on for the noise cancelling to work. That also turns on the DSP which greatly improves audio quality.
>
> ED / W2RF
>
>
>
>
> -----Original Message-----
>
> Jim,
>
> I only use my Bose QC-35 when:
>
> 1. on the cell phone.
> 2. mowing the yard/tuning my motorcycle 3. whenever using the K3 &
> K3s.
>
> The noise cancelling works perfectly with the blower from the Alpha
> 77SX right next to me, I only hear what is coming in from the radio.
> Why your
> QC-35 does not noise cancel when attached via cord is not normal, mine is a Godsend.
>
> 73,
>
> Gary
> KA1J
>
>> I have Bose QC-35 headphones. Noise canceling does not work on any
>> radio when you use the cord. Headphones work well with a Bluetooth
>> connection.What kind of device do I use, if and when my K4 is
>> delivered?Also on the K4 can a USB port expander be used on the K4
>> with multiple devices and what is the K4 limited to?Jim K9TFSent
>> from my T-Mobile 4G LTE Device

Jim AB3CV

Re: K4 Headphones Q

How about latency for CW either wired or wireless?

How do you deal with battery life in contesting?

Stay safe!

Jim ab3cv

On Wed, Oct 14, 2020 at 10:35 AM Jim McDonald <[hidden email]> wrote:

> Over the ear - very comfortable.
>
> Top rated (87) by Consumer Reports - tied with the new model.
>
> 73, Jim N7US
>
> -----Original Message-----
>
> Do the QC-35 rest on your ear or are they over the ear?
>
> Rich - N5ZC
>
> On 10/14/2020 7:59 AM, Jim McDonald wrote:
> > I just bought a pair yesterday at a closeout price of $170 from my local
> Costco. They have been discontinued. Costco online is now out of stock,
> but some stores still have them. Amazon has them for $199 now.
> >
> > My favorite headphones up to now has been Sennheiser HD 280 PRO but
> these sound great and eliminate the noise from my KPA1500 with the fan on
> #2 and a nearby water heater fan. No comparison with my old QC2 headphones.
> >
> > 73, Jim N7US
> >
> > -----Original Message-----
> >
> >
> > I also use a QC-35. When plugged in with a cord, the power must be on
> for the noise cancelling to work. That also turns on the DSP which greatly
> improves audio quality.
> >
> > ED / W2RF
> >
> >
> >
> >
> > -----Original Message-----
> >
> > Jim,
> >
> > I only use my Bose QC-35 when:
> >
> > 1. on the cell phone.
> > 2. mowing the yard/tuning my motorcycle 3. whenever using the K3 &
> > K3s.
> >
> > The noise cancelling works perfectly with the blower from the Alpha
> > 77SX right next to me, I only hear what is coming in from the radio.
> > Why your
> > QC-35 does not noise cancel when attached via cord is not normal, mine
> is a Godsend.
> >
> > 73,
> >
> > Gary
> > KA1J
> >
> >> I have Bose QC-35 headphones. Noise canceling does not work on any
> >> radio when you use the cord. Headphones work well with a Bluetooth
> >> connection.What kind of device do I use, if and when my K4 is
> >> delivered?Also on the K4 can a USB port expander be used on the K4
> >> with multiple devices and what is the K4 limited to?Jim K9TFSent
> >> from my T-Mobile 4G LTE Device
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]

Edward H Russell

Re: K4 Headphones Q

Wireless introduces latency, wired does not. Definitely use wired for CW.

ED / W2RF

-----Original Message-----
From: [hidden email] <[hidden email]> On
Behalf Of Jim Miller
Sent: Wednesday, October 14, 2020 11:13 AM
To: Jim McDonald <[hidden email]>
Cc: [hidden email]
Subject: Re: [Elecraft] K4 Headphones Q

How about latency for CW either wired or wireless?

How do you deal with battery life in contesting?

Stay safe!

Jim ab3cv

On Wed, Oct 14, 2020 at 10:35 AM Jim McDonald <[hidden email]> wrote:

headphones.

> >
> > 73, Jim N7US
> >
> > -----Original Message-----
> >
> >
> > I also use a QC-35. When plugged in with a cord, the power must be
> > on
> for the noise cancelling to work. That also turns on the DSP which
> greatly improves audio quality.
> >
> > ED / W2RF
> >
> >
> >
> >
> > -----Original Message-----
> >
> > Jim,
> >
> > I only use my Bose QC-35 when:
> >
> > 1. on the cell phone.
> > 2. mowing the yard/tuning my motorcycle 3. whenever using the K3 &
> > K3s.
> >
> > The noise cancelling works perfectly with the blower from the Alpha
> > 77SX right next to me, I only hear what is coming in from the radio.
> > Why your
> > QC-35 does not noise cancel when attached via cord is not normal,
> > mine
> is a Godsend.
> >
> > 73,
> >
> > Gary
> > KA1J
> >
> >> I have Bose QC-35 headphones. Noise canceling does not work on any
> >> radio when you use the cord. Headphones work well with a Bluetooth
> >> connection.What kind of device do I use, if and when my K4 is
> >> delivered?Also on the K4 can a USB port expander be used on the K4
> >> with multiple devices and what is the K4 limited to?Jim K9TFSent
> >> from my T-Mobile 4G LTE Device
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net Please help support this email
> list: http://www.qsl.net/donate.html Message delivered to
> [hidden email]

Dave Sublette-2

Re: K4 Headphones Q

I use a bluetooth set from Avantree and there is no latency that I can
detect. I operate CW almost exclusively, using a key paddle and copying in
my head. I don't know how they would work with keyboard and speeds above
25 WPM

Dave, K4TO

On Wed, Oct 14, 2020 at 11:32 AM E.H. Russell <[hidden email]> wrote:

> Wireless introduces latency, wired does not. Definitely use wired for CW.
>
> ED / W2RF
>
>
>
>
> -----Original Message-----
> From: [hidden email] <[hidden email]>
> On
> Behalf Of Jim Miller
> Sent: Wednesday, October 14, 2020 11:13 AM
> To: Jim McDonald <[hidden email]>
> Cc: [hidden email]
> Subject: Re: [Elecraft] K4 Headphones Q
>
> How about latency for CW either wired or wireless?
>
> How do you deal with battery life in contesting?
>
> Stay safe!
>
> Jim ab3cv
>
> On Wed, Oct 14, 2020 at 10:35 AM Jim McDonald <[hidden email]> wrote:
>
> > Over the ear - very comfortable.
> >
> > Top rated (87) by Consumer Reports - tied with the new model.
> >
> > 73, Jim N7US
> >
> > -----Original Message-----
> >
> > Do the QC-35 rest on your ear or are they over the ear?
> >
> > Rich - N5ZC
> >
> > On 10/14/2020 7:59 AM, Jim McDonald wrote:
> > > I just bought a pair yesterday at a closeout price of $170 from my
> > > local
> > Costco. They have been discontinued. Costco online is now out of
> > stock, but some stores still have them. Amazon has them for $199 now.
> > >
> > > My favorite headphones up to now has been Sennheiser HD 280 PRO but
> > these sound great and eliminate the noise from my KPA1500 with the fan
> > on
> > #2 and a nearby water heater fan. No comparison with my old QC2
> headphones.
> > >
> > > 73, Jim N7US
> > >
> > > -----Original Message-----
> > >
> > >
> > > I also use a QC-35. When plugged in with a cord, the power must be
> > > on
> > for the noise cancelling to work. That also turns on the DSP which
> > greatly improves audio quality.
> > >
> > > ED / W2RF
> > >
> > >
> > >
> > >
> > > -----Original Message-----
> > >
> > > Jim,
> > >
> > > I only use my Bose QC-35 when:
> > >
> > > 1. on the cell phone.
> > > 2. mowing the yard/tuning my motorcycle 3. whenever using the K3 &
> > > K3s.
> > >
> > > The noise cancelling works perfectly with the blower from the Alpha
> > > 77SX right next to me, I only hear what is coming in from the radio.
> > > Why your
> > > QC-35 does not noise cancel when attached via cord is not normal,
> > > mine
> > is a Godsend.
> > >
> > > 73,
> > >
> > > Gary
> > > KA1J
> > >
> > >> I have Bose QC-35 headphones. Noise canceling does not work on any
> > >> radio when you use the cord. Headphones work well with a Bluetooth
> > >> connection.What kind of device do I use, if and when my K4 is
> > >> delivered?Also on the K4 can a USB port expander be used on the K4
> > >> with multiple devices and what is the K4 limited to?Jim K9TFSent
> > >> from my T-Mobile 4G LTE Device
> > ______________________________________________________________
> > Elecraft mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/elecraft
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:[hidden email]
> >
> > This list hosted by: http://www.qsl.net Please help support this email
> > list: http://www.qsl.net/donate.html Message delivered to
> > [hidden email]
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message
> delivered to [hidden email]
>
> ______________________________________________________________
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> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
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> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]
>

Dave Sublette-2

Re: K4 Headphones Q

PS -- latency specs are published on most headsets. That is how I selected
this model,

K4TO

ps

On Wed, Oct 14, 2020 at 11:35 AM Dave Sublette <[hidden email]> wrote:

> I use a bluetooth set from Avantree and there is no latency that I can
> detect. I operate CW almost exclusively, using a key paddle and copying in
> my head. I don't know how they would work with keyboard and speeds above
> 25 WPM
>
> Dave, K4TO
>
> On Wed, Oct 14, 2020 at 11:32 AM E.H. Russell <[hidden email]> wrote:
>
>> Wireless introduces latency, wired does not. Definitely use wired for CW.
>>
>> ED / W2RF
>>
>>
>>
>>
>> -----Original Message-----
>> From: [hidden email] <[hidden email]>
>> On
>> Behalf Of Jim Miller
>> Sent: Wednesday, October 14, 2020 11:13 AM
>> To: Jim McDonald <[hidden email]>
>> Cc: [hidden email]
>> Subject: Re: [Elecraft] K4 Headphones Q
>>
>> How about latency for CW either wired or wireless?
>>
>> How do you deal with battery life in contesting?
>>
>> Stay safe!
>>
>> Jim ab3cv
>>
>> On Wed, Oct 14, 2020 at 10:35 AM Jim McDonald <[hidden email]> wrote:
>>
>> > Over the ear - very comfortable.
>> >
>> > Top rated (87) by Consumer Reports - tied with the new model.
>> >
>> > 73, Jim N7US
>> >
>> > -----Original Message-----
>> >
>> > Do the QC-35 rest on your ear or are they over the ear?
>> >
>> > Rich - N5ZC
>> >
>> > On 10/14/2020 7:59 AM, Jim McDonald wrote:
>> > > I just bought a pair yesterday at a closeout price of $170 from my
>> > > local
>> > Costco. They have been discontinued. Costco online is now out of
>> > stock, but some stores still have them. Amazon has them for $199 now.
>> > >
>> > > My favorite headphones up to now has been Sennheiser HD 280 PRO but
>> > these sound great and eliminate the noise from my KPA1500 with the fan
>> > on
>> > #2 and a nearby water heater fan. No comparison with my old QC2
>> headphones.
>> > >
>> > > 73, Jim N7US
>> > >
>> > > -----Original Message-----
>> > >
>> > >
>> > > I also use a QC-35. When plugged in with a cord, the power must be
>> > > on
>> > for the noise cancelling to work. That also turns on the DSP which
>> > greatly improves audio quality.
>> > >
>> > > ED / W2RF
>> > >
>> > >
>> > >
>> > >
>> > > -----Original Message-----
>> > >
>> > > Jim,
>> > >
>> > > I only use my Bose QC-35 when:
>> > >
>> > > 1. on the cell phone.
>> > > 2. mowing the yard/tuning my motorcycle 3. whenever using the K3 &
>> > > K3s.
>> > >
>> > > The noise cancelling works perfectly with the blower from the Alpha
>> > > 77SX right next to me, I only hear what is coming in from the radio.
>> > > Why your
>> > > QC-35 does not noise cancel when attached via cord is not normal,
>> > > mine
>> > is a Godsend.
>> > >
>> > > 73,
>> > >
>> > > Gary
>> > > KA1J
>> > >
>> > >> I have Bose QC-35 headphones. Noise canceling does not work on any
>> > >> radio when you use the cord. Headphones work well with a Bluetooth
>> > >> connection.What kind of device do I use, if and when my K4 is
>> > >> delivered?Also on the K4 can a USB port expander be used on the K4
>> > >> with multiple devices and what is the K4 limited to?Jim K9TFSent
>> > >> from my T-Mobile 4G LTE Device
>> > ______________________________________________________________
>> > Elecraft mailing list
>> > Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> > Help: http://mailman.qth.net/mmfaq.htm
>> > Post: mailto:[hidden email]
>> >
>> > This list hosted by: http://www.qsl.net Please help support this email
>> > list: http://www.qsl.net/donate.html Message delivered to
>> > [hidden email]
>> ______________________________________________________________
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>>
>> This list hosted by: http://www.qsl.net
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>> delivered to [hidden email]
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>>
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>

N7US

Re: K4 Headphones Q

In reply to this post by Edward H Russell

The rechargeable battery with noise cancelling on and Bluetooth off is rated at 40 hours. It uses the same USB charging plug as my Logitech keyboard, so I have a charging cable on my desk.

I connect to my K3S with the cable, which is inadequate. It's 4' long, lightweight, and flimsy. The jack on the headphones is a sub-mini, 2.5mm, and the other end is a mini-phone plug, 2.5mm. Amazon has several replacement cables that are heavier and designed for these headphones.

73, Jim N7US

-----Original Message-----

Wireless introduces latency, wired does not. Definitely use wired for CW.

ED / W2RF

-----Original Message-----
From: [hidden email] <[hidden email]> On Behalf Of Jim Miller
Sent: Wednesday, October 14, 2020 11:13 AM
To: Jim McDonald <[hidden email]>
Cc: [hidden email]
Subject: Re: [Elecraft] K4 Headphones Q

How about latency for CW either wired or wireless?

How do you deal with battery life in contesting?

Stay safe!

Jim ab3cv

On Wed, Oct 14, 2020 at 10:35 AM Jim McDonald <[hidden email]> wrote:

headphones.

Elecraft mailing list

Re: K4 Headphones Q

In reply to this post by Edward H Russell

After reading a positive review and to reduces wires at my operating position, I connected a bluetooth transmitter to my K3/0 and tried a bluetooth headset. The latency was so bad that I just could not send cw using my paddles. I attached a wire to the headphones and the problem went away.

Transmitter: Taotronics BA014, Headphones: Sony WH-1000XM3

Raj

> On Oct 14, 2020, at 11:31 AM, E.H. Russell <[hidden email]> wrote:
>
> Wireless introduces latency, wired does not. Definitely use wired for CW.
>
> ED / W2RF
>
>
>
>
> -----Original Message-----
> From: [hidden email] <[hidden email]> On
> Behalf Of Jim Miller
> Sent: Wednesday, October 14, 2020 11:13 AM
> To: Jim McDonald <[hidden email]>
> Cc: [hidden email]
> Subject: Re: [Elecraft] K4 Headphones Q
>
> How about latency for CW either wired or wireless?
>
> How do you deal with battery life in contesting?
>
> Stay safe!
>
> Jim ab3cv
>
> On Wed, Oct 14, 2020 at 10:35 AM Jim McDonald <[hidden email]> wrote:
>
>> Over the ear - very comfortable.
>>
>> Top rated (87) by Consumer Reports - tied with the new model.
>>
>> 73, Jim N7US
>>
>> -----Original Message-----
>>
>> Do the QC-35 rest on your ear or are they over the ear?
>>
>> Rich - N5ZC
>>
>> On 10/14/2020 7:59 AM, Jim McDonald wrote:
>>> I just bought a pair yesterday at a closeout price of $170 from my
>>> local
>> Costco. They have been discontinued. Costco online is now out of
>> stock, but some stores still have them. Amazon has them for $199 now.
>>>
>>> My favorite headphones up to now has been Sennheiser HD 280 PRO but
>> these sound great and eliminate the noise from my KPA1500 with the fan
>> on
>> #2 and a nearby water heater fan. No comparison with my old QC2
> headphones.
>>>
>>> 73, Jim N7US
>>>
>>> -----Original Message-----
>>>
>>>
>>> I also use a QC-35. When plugged in with a cord, the power must be
>>> on
>> for the noise cancelling to work. That also turns on the DSP which
>> greatly improves audio quality.
>>>
>>> ED / W2RF
>>>
>>>
>>>
>>>
>>> -----Original Message-----
>>>
>>> Jim,
>>>
>>> I only use my Bose QC-35 when:
>>>
>>> 1. on the cell phone.
>>> 2. mowing the yard/tuning my motorcycle 3. whenever using the K3 &
>>> K3s.
>>>
>>> The noise cancelling works perfectly with the blower from the Alpha
>>> 77SX right next to me, I only hear what is coming in from the radio.
>>> Why your
>>> QC-35 does not noise cancel when attached via cord is not normal,
>>> mine
>> is a Godsend.
>>>
>>> 73,
>>>
>>> Gary
>>> KA1J
>>>
>>>> I have Bose QC-35 headphones. Noise canceling does not work on any
>>>> radio when you use the cord. Headphones work well with a Bluetooth
>>>> connection.What kind of device do I use, if and when my K4 is
>>>> delivered?Also on the K4 can a USB port expander be used on the K4
>>>> with multiple devices and what is the K4 limited to?Jim K9TFSent
>>>> from my T-Mobile 4G LTE Device
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:[hidden email]
>>
>> This list hosted by: http://www.qsl.net Please help support this email
>> list: http://www.qsl.net/donate.html Message delivered to
>> [hidden email]
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html Message
> delivered to [hidden email]
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]

N7US

Re: K4 Headphones Q

In reply to this post by N7US

Sorry, but I need to correct a typo. The cable included with the headphones is 2.5mm at the headphones and 3.5mm at the other (radio) end, so an adaptor is required, though not provided.

73, Jim N7US

-----Original Message-----

The rechargeable battery with noise cancelling on and Bluetooth off is rated at 40 hours. It uses the same USB charging plug as my Logitech keyboard, so I have a charging cable on my desk.

I connect to my K3S with the cable, which is inadequate. It's 4' long, lightweight, and flimsy. The jack on the headphones is a sub-mini, 2.5mm, and the other end is a mini-phone plug, 2.5mm. Amazon has several replacement cables that are heavier and designed for these headphones.

73, Jim N7US

-----Original Message-----

Wireless introduces latency, wired does not. Definitely use wired for CW.

ED / W2RF

-----Original Message-----

How about latency for CW either wired or wireless?

How do you deal with battery life in contesting?

Stay safe!

Jim ab3cv

On Wed, Oct 14, 2020 at 10:35 AM Jim McDonald <[hidden email]> wrote:

headphones.

Edward H Russell

Re: K4 Headphones Q

In reply to this post by Elecraft mailing list

There are newer headsets claiming 40ms latency, but the host must support
the LL format. My estimate for the QC-35 which uses the ATX format is in the
range of 150-250ms. This may not be a problem at slower CW speeds for some
folks, but I couldn't tolerate it.

ED / W2RF

-----Original Message-----
From: Rajiv Dewan <[hidden email]>
Sent: Wednesday, October 14, 2020 11:45 AM
To: E.H. Russell <[hidden email]>
Cc: Jim Miller <[hidden email]>; Jim McDonald <[hidden email]>;
[hidden email]
Subject: Re: [Elecraft] K4 Headphones Q

After reading a positive review and to reduces wires at my operating
position, I connected a bluetooth transmitter to my K3/0 and tried a
bluetooth headset. The latency was so bad that I just could not send cw
using my paddles. I attached a wire to the headphones and the problem went
away.

Transmitter: Taotronics BA014, Headphones: Sony WH-1000XM3

Raj

> On Oct 14, 2020, at 11:31 AM, E.H. Russell <[hidden email]> wrote:
>
> Wireless introduces latency, wired does not. Definitely use wired for CW.
>
> ED / W2RF
>
>
>
>
> -----Original Message-----
> From: [hidden email]
> <[hidden email]> On Behalf Of Jim Miller
> Sent: Wednesday, October 14, 2020 11:13 AM
> To: Jim McDonald <[hidden email]>
> Cc: [hidden email]
> Subject: Re: [Elecraft] K4 Headphones Q
>
> How about latency for CW either wired or wireless?
>
> How do you deal with battery life in contesting?
>
> Stay safe!
>
> Jim ab3cv
>
> On Wed, Oct 14, 2020 at 10:35 AM Jim McDonald <[hidden email]> wrote:
>
>> Over the ear - very comfortable.
>>
>> Top rated (87) by Consumer Reports - tied with the new model.
>>
>> 73, Jim N7US
>>
>> -----Original Message-----
>>
>> Do the QC-35 rest on your ear or are they over the ear?
>>
>> Rich - N5ZC
>>
>> On 10/14/2020 7:59 AM, Jim McDonald wrote:
>>> I just bought a pair yesterday at a closeout price of $170 from my
>>> local
>> Costco. They have been discontinued. Costco online is now out of
>> stock, but some stores still have them. Amazon has them for $199 now.
>>>
>>> My favorite headphones up to now has been Sennheiser HD 280 PRO but
>> these sound great and eliminate the noise from my KPA1500 with the
>> fan on
>> #2 and a nearby water heater fan. No comparison with my old QC2
> headphones.
>>>
>>> 73, Jim N7US
>>>
>>> -----Original Message-----
>>>
>>>
>>> I also use a QC-35. When plugged in with a cord, the power must be
>>> on
>> for the noise cancelling to work. That also turns on the DSP which
>> greatly improves audio quality.
>>>
>>> ED / W2RF
>>>
>>>
>>>
>>>
>>> -----Original Message-----
>>>
>>> Jim,
>>>
>>> I only use my Bose QC-35 when:
>>>
>>> 1. on the cell phone.
>>> 2. mowing the yard/tuning my motorcycle 3. whenever using the K3 &
>>> K3s.
>>>
>>> The noise cancelling works perfectly with the blower from the Alpha
>>> 77SX right next to me, I only hear what is coming in from the radio.
>>> Why your
>>> QC-35 does not noise cancel when attached via cord is not normal,
>>> mine
>> is a Godsend.
>>>
>>> 73,
>>>
>>> Gary
>>> KA1J
>>>
>>>> I have Bose QC-35 headphones. Noise canceling does not work on any
>>>> radio when you use the cord. Headphones work well with a Bluetooth
>>>> connection.What kind of device do I use, if and when my K4 is
>>>> delivered?Also on the K4 can a USB port expander be used on the K4
>>>> with multiple devices and what is the K4 limited to?Jim K9TFSent
>>>> from my T-Mobile 4G LTE Device
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:[hidden email]
>>
>> This list hosted by: http://www.qsl.net Please help support this
>> email
>> list: http://www.qsl.net/donate.html Message delivered to
>> [hidden email]
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net Please help support this email
> list: http://www.qsl.net/donate.html Message delivered to [hidden email]
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net Please help support this email
> list: http://www.qsl.net/donate.html Message delivered to
> [hidden email]

Jim Brown-10

Re: K4 Headphones Q

In reply to this post by Edward H Russell

On 10/14/2020 8:31 AM, E.H. Russell wrote:
> Wireless introduces latency, wired does not.

DIGITAL introduces latency, NOT radio. ANALOG radio over short distances
does NOT add latency. In systems like Bluetooth, it is the A/D and D/A
conversions that add latency, NOT the radio transmission of the digital
signal.

73, Jim K9YC
______________________________________________________________
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Post: mailto:[hidden email]

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Message delivered to [hidden email]

Edward H Russell

Re: K4 Headphones Q

Analog radios have almost no latency, but it's almost impossible to find a
pure analog radio anymore. Most conventional radios switch over to DSP in
the IF stage, which introduces anywhere from a few ms of latency up. For
example, the TS-890s hybrid has about 25ms receive latency. Then when you go
to full SDR you probably get a somewhat bigger number, anywhere from 40 up.
But the real source of latency in current systems is Bluetooth, which can
run in the range of 200ms. New Bluetooth protocols aim to bring that down to
a reasonable 40ms, but they aren't widely available yet.

So for now, use wired headphones.

ED / W2RF

-----Original Message-----
From: [hidden email] <[hidden email]> On
Behalf Of Jim Brown
Sent: Wednesday, October 14, 2020 1:00 PM
To: [hidden email]
Subject: Re: [Elecraft] K4 Headphones Q

On 10/14/2020 8:31 AM, E.H. Russell wrote:
> Wireless introduces latency, wired does not.

DIGITAL introduces latency, NOT radio. ANALOG radio over short distances
does NOT add latency. In systems like Bluetooth, it is the A/D and D/A
conversions that add latency, NOT the radio transmission of the digital
signal.

73, Jim K9YC
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
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delivered to [hidden email]

______________________________________________________________
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Clay Autery-2

Re: K4 Headphones Q

In reply to this post by Jim Brown-10

Thank you. I get tired of explaining this to folks.

______________________
Clay Autery, KY5G
(318) 518-1389

On 10/14/20 12:00, Jim Brown wrote:
> On 10/14/2020 8:31 AM, E.H. Russell wrote:
>> Wireless introduces latency, wired does not.
>
> DIGITAL introduces latency, NOT radio. ANALOG radio over short
> distances does NOT add latency. In systems like Bluetooth, it is the
> A/D and D/A conversions that add latency, NOT the radio transmission
> of the digital signal.
>
> 73, Jim K9YC
______________________________________________________________
Elecraft mailing list
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Grant Youngman-2

Re: K4 Headphones Q

While I realize that precision in statements is important … this is cutting a mighty fine point. OF COURSE it’s the digital processing that causes the delays. It’s perfectly reasonable to assume in this group that we know what we mean when we say that a “wireless” headset introduces delay, and we’re not talking about interplanetary communications. Context matters, and the context of this conversation is Bluetooth headsets ...

Grant NQ5T

> On Oct 14, 2020, at 1:36 PM, Clay Autery <[hidden email]> wrote:
>

> Thank you. I get tired of explaining this to folks.
>
> ______________________
> Clay Autery, KY5G
> (318) 518-1389
>
> On 10/14/20 12:00, Jim Brown wrote:
>> On 10/14/2020 8:31 AM, E.H. Russell wrote:
>>> Wireless introduces latency, wired does not.
>>
>> DIGITAL introduces latency, NOT radio. ANALOG radio over short distances does NOT add latency. In systems like Bluetooth, it is the A/D and D/A conversions that add latency, NOT the radio transmission of the digital signal.
>>
>> 73, Jim K9YC
> ______________________________________________________________

Jim Brown-10

Re: K4 Headphones Q

On 10/14/2020 10:45 AM, Grant Youngman wrote:
> While I realize that precision in statements is important … this is cutting a mighty fine point. OF COURSE it’s the digital processing that causes the delays. It’s perfectly reasonable to assume in this group that we know what we mean when we say that a “wireless” headset introduces delay, and we’re not talking about interplanetary communications. Context matters, and the context of this conversation is Bluetooth headsets .

Analog radio microphones have been used in broadcasting and live sound
for at least 50 years, and for at least 30 years, analog radio systems
have been used to provide in-ear cue and monitoring for "talent."
Neither could work in live sound applications if there was latency.

Precision of wording DOES matter. Lack of precision creates confusion
and misunderstanding.

73, Jim K9YC
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