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Adapter for use between iPhone headset and a KX2/KX3

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wayne burdick

Adapter for use between iPhone headset and a KX2/KX3

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Several KX2/KX3 users have asked what I use as an adapter to go from an iPhone headset to the rig’s headphone and mic jacks.

Here it is:

https://www.amazon.com/gp/product/B00PYZ2BT4/ref=oh_aui_bia_detailpage_o02_s00?ie=UTF8&psc=1

This unit works beautifully with both my old and new iPhone headsets. The combination of the headset and this adapter take a tiny amount of space in my go-bag. Audio reports are great, even with speech compression set to max (MENU:TX CMP).

You’ll need to set MENU:MIC BIAS to ON, and I also recommend setting MIC BTN to OFF.

You can tap the XMIT button to start voice-mode transmit, or use VOX. See VOX menu entries in the owner’s manual.

Note: There’s a rumor that one legacy version of the iPhone headset was different from the others. I don’t have any info on this, but it means there’s a slight risk that this $6 adapter won’t work in your case. But it certainly works with the earpods I bought a couple of months ago.

73,
Wayne
N6KR

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Elecraft mailing list

Re: Adapter for use between iPhone headset and a KX2/KX3

Wayne,

I have yet to use voice (SSB) on my KX3 or KX2 having been so far CW only. Are there any other
audio settings you have set other than those you mention below. Do you recommend speech
compression set to max or was that just a test of audio quality check. I will experiment but it
would be nice to know what starting points and boundaries make sense.

I still have all my iPhone headsets from my original iPhone 1 through my current 6s. Actually,
still have all those iPhones too. I may test each one to see how they work — now, I need to
find them all though. Just ordered the Y-adapter cable from Amazon.

73, phil, K7PEH

> On Jul 2, 2018, at 5:09 PM, Wayne Burdick <[hidden email]> wrote:
>
> Several KX2/KX3 users have asked what I use as an adapter to go from an iPhone headset to the rig’s headphone and mic jacks.
>
> Here it is:
>
> https://www.amazon.com/gp/product/B00PYZ2BT4/ref=oh_aui_bia_detailpage_o02_s00?ie=UTF8&psc=1
>
> This unit works beautifully with both my old and new iPhone headsets. The combination of the headset and this adapter take a tiny amount of space in my go-bag. Audio reports are great, even with speech compression set to max (MENU:TX CMP).
>
> You’ll need to set MENU:MIC BIAS to ON, and I also recommend setting MIC BTN to OFF.
>
> You can tap the XMIT button to start voice-mode transmit, or use VOX. See VOX menu entries in the owner’s manual.
>
> Note: There’s a rumor that one legacy version of the iPhone headset was different from the others. I don’t have any info on this, but it means there’s a slight risk that this $6 adapter won’t work in your case. But it certainly works with the earpods I bought a couple of months ago.
>
> 73,
> Wayne
> N6KR
>
>
> ______________________________________________________________
> 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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wayne burdick

Re: Adapter for use between iPhone headset and a KX2/KX3

Administrator

> On Jul 2, 2018, at 5:20 PM, Phil Hystad <[hidden email]> wrote:
>
> Do you recommend speech
> compression set to max or was that just a test of audio quality check.

I generally leave TX CMP at 20, but even at 30, the audio is very clean. The extra punch can help with QRP and/or small antennas.

>
> I still have all my iPhone headsets from my original iPhone 1 through my current 6s. Actually,
> still have all those iPhones too. I may test each one to see how they work — now, I need to
> find them all though. Just ordered the Y-adapter cable from Amazon.

Just be sure to listen to your signal on another receiver (well attenuated) before going on the air.

73,
Wayne
N6KR

>
> 73, phil, K7PEH
>
>> On Jul 2, 2018, at 5:09 PM, Wayne Burdick <[hidden email]> wrote:
>>
>> Several KX2/KX3 users have asked what I use as an adapter to go from an iPhone headset to the rig’s headphone and mic jacks.
>>
>> Here it is:
>>
>> https://www.amazon.com/gp/product/B00PYZ2BT4/ref=oh_aui_bia_detailpage_o02_s00?ie=UTF8&psc=1
>>
>> This unit works beautifully with both my old and new iPhone headsets. The combination of the headset and this adapter take a tiny amount of space in my go-bag. Audio reports are great, even with speech compression set to max (MENU:TX CMP).
>>
>> You’ll need to set MENU:MIC BIAS to ON, and I also recommend setting MIC BTN to OFF.
>>
>> You can tap the XMIT button to start voice-mode transmit, or use VOX. See VOX menu entries in the owner’s manual.
>>
>> Note: There’s a rumor that one legacy version of the iPhone headset was different from the others. I don’t have any info on this, but it means there’s a slight risk that this $6 adapter won’t work in your case. But it certainly works with the earpods I bought a couple of months ago.
>>
>> 73,
>> Wayne
>> N6KR
>>
>>
>> ______________________________________________________________
>> 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]
>

Bill K9YEQ

Re: Adapter for use between iPhone headset and a KX2/KX3

Wayne, tx!

Have a great day,
Bill J

K9YEQ
________________________________
From: [hidden email] <[hidden email]> on behalf of Wayne Burdick <[hidden email]>
Sent: Monday, July 2, 2018 7:23:52 PM
To: Phil Hystad
Cc: Elecraft Reflector
Subject: Re: [Elecraft] Adapter for use between iPhone headset and a KX2/KX3

> On Jul 2, 2018, at 5:20 PM, Phil Hystad <[hidden email]> wrote:
>
> Do you recommend speech
> compression set to max or was that just a test of audio quality check.

I generally leave TX CMP at 20, but even at 30, the audio is very clean. The extra punch can help with QRP and/or small antennas.

>
> I still have all my iPhone headsets from my original iPhone 1 through my current 6s. Actually,
> still have all those iPhones too. I may test each one to see how they work — now, I need to
> find them all though. Just ordered the Y-adapter cable from Amazon.

Just be sure to listen to your signal on another receiver (well attenuated) before going on the air.

73,
Wayne
N6KR

______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
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]
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Jim Brown-10

Re: Adapter for use between iPhone headset and a KX2/KX3

In reply to this post by wayne burdick

On 7/2/2018 5:23 PM, Wayne Burdick wrote:
> I generally leave TX CMP at 20, but even at 30, the audio is very clean. The extra punch can help with QRP and/or small antennas.

Hi Wayne,

You're looking at the wrong thing to set compression, because the
numeric value doesn't take the mic sensitivity into account. Rather, we
should be looking at the indicated gain reduction on audio peaks, and 10
dB is a good objective.

As an audio pro, my advice is 1) set TXEQ so that you're not wasting
power transmitting low frequency speech sounds (max cut for the first
three bands, 6 dB cut for the fourth) 2) Set CMP for the indicated
value of gain reduction 3) Get some signal reports from a good
listener. This combination results in about 13 dB of increased talk
power (3 dB for the EQ, 10 for CMP).

73, Jim K9YC

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wayne burdick

Re: Adapter for use between iPhone headset and a KX2/KX3

Administrator

The numeric value is a relative indication generated by the math we use in our algorithm; it’s not actually an attempt to quantify compression in dB. Multiple factors including power level, ALC level, and mic gain setting are taken into account. I’ll dig up the full details of the implementation when I get a chance.

Meanwhile (anecdotally): at any setting the compression is very clean, and at the high end it greatly increases the “punchiness” of the signal.

Wayne
N6KR

> On Jul 3, 2018, at 10:14 AM, Jim Brown <[hidden email]> wrote:
>
> On 7/2/2018 5:23 PM, Wayne Burdick wrote:
>> I generally leave TX CMP at 20, but even at 30, the audio is very clean. The extra punch can help with QRP and/or small antennas.
>
> Hi Wayne,
>
> You're looking at the wrong thing to set compression, because the numeric value doesn't take the mic sensitivity into account. Rather, we should be looking at the indicated gain reduction on audio peaks, and 10 dB is a good objective.
>
> As an audio pro, my advice is 1) set TXEQ so that you're not wasting power transmitting low frequency speech sounds (max cut for the first three bands, 6 dB cut for the fourth) 2) Set CMP for the indicated value of gain reduction 3) Get some signal reports from a good listener. This combination results in about 13 dB of increased talk power (3 dB for the EQ, 10 for CMP).
>
> 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
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]

Mark Ethridge

Re: Adapter for use between iPhone headset and a KX2/KX3

Wayne,
What gain and vox settings are you using?

On Tue, Jul 3, 2018 at 12:27 PM, Wayne Burdick <[hidden email]> wrote:

> The numeric value is a relative indication generated by the math we use in
> our algorithm; it’s not actually an attempt to quantify compression in dB.
> Multiple factors including power level, ALC level, and mic gain setting are
> taken into account. I’ll dig up the full details of the implementation when
> I get a chance.
>
> Meanwhile (anecdotally): at any setting the compression is very clean, and
> at the high end it greatly increases the “punchiness” of the signal.
>
> Wayne
> N6KR
>
>
> > On Jul 3, 2018, at 10:14 AM, Jim Brown <[hidden email]>
> wrote:
> >
> > On 7/2/2018 5:23 PM, Wayne Burdick wrote:
> >> I generally leave TX CMP at 20, but even at 30, the audio is very
> clean. The extra punch can help with QRP and/or small antennas.
> >
> > Hi Wayne,
> >
> > You're looking at the wrong thing to set compression, because the
> numeric value doesn't take the mic sensitivity into account. Rather, we
> should be looking at the indicated gain reduction on audio peaks, and 10 dB
> is a good objective.
> >
> > As an audio pro, my advice is 1) set TXEQ so that you're not wasting
> power transmitting low frequency speech sounds (max cut for the first three
> bands, 6 dB cut for the fourth) 2) Set CMP for the indicated value of gain
> reduction 3) Get some signal reports from a good listener. This
> combination results in about 13 dB of increased talk power (3 dB for the
> EQ, 10 for CMP).
> >
> > 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
> > 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]
>

wayne burdick

Re: Adapter for use between iPhone headset and a KX2/KX3

Administrator

VOX and ANTIVOX settings will vary with the level of wind noise, etc. You’ll need to experiment.

Mic gain was around 25.

73,
Wayne
N6KR

> On Jul 5, 2018, at 6:25 PM, Mark Ethridge <[hidden email]> wrote:
>
> Wayne,
> What gain and vox settings are you using?
>
> On Tue, Jul 3, 2018 at 12:27 PM, Wayne Burdick <[hidden email]> wrote:
> The numeric value is a relative indication generated by the math we use in our algorithm; it’s not actually an attempt to quantify compression in dB. Multiple factors including power level, ALC level, and mic gain setting are taken into account. I’ll dig up the full details of the implementation when I get a chance.
>
> Meanwhile (anecdotally): at any setting the compression is very clean, and at the high end it greatly increases the “punchiness” of the signal.
>
> Wayne
> N6KR
>
>
> > On Jul 3, 2018, at 10:14 AM, Jim Brown <[hidden email]> wrote:
> >
> > On 7/2/2018 5:23 PM, Wayne Burdick wrote:
> >> I generally leave TX CMP at 20, but even at 30, the audio is very clean. The extra punch can help with QRP and/or small antennas.
> >
> > Hi Wayne,
> >
> > You're looking at the wrong thing to set compression, because the numeric value doesn't take the mic sensitivity into account. Rather, we should be looking at the indicated gain reduction on audio peaks, and 10 dB is a good objective.
> >
> > As an audio pro, my advice is 1) set TXEQ so that you're not wasting power transmitting low frequency speech sounds (max cut for the first three bands, 6 dB cut for the fourth) 2) Set CMP for the indicated value of gain reduction 3) Get some signal reports from a good listener. This combination results in about 13 dB of increased talk power (3 dB for the EQ, 10 for CMP).
> >
> > 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
> > 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]
>