[K3] front phones socket duability

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[K3] front phones socket duability

M0XDF
I find I'm plugging the phones line on my Proset, in and out of the front
phones socket quite a lot (> 20 times a day perhaps)
Anyone any idea of the durability the socket?
--
No sensible decision can be made any longer without taking into account not
only the world as it is, but the world as it will be.
-Isaac Asimov, scientist and writer (1920-1992)


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Re: [K3] front phones socket duability

drewko
On Wed, 16 Jan 2008 18:48:47 +0000, "David Ferrington, M0XDF" wrote:

>I find I'm plugging the phones line on my Proset, in and out of the front
>phones socket quite a lot (> 20 times a day perhaps)
>Anyone any idea of the durability the socket?


That is also how I use the headphones: constantly jumping between them
and speaker. When I replaced the jack on my K2 I decided to add a
headphone/speaker switch on the rear panel. I can switch back and
forth between headphones and speaker with no worry about wearing out
the jack.

But apart from the durability issue, the headphone/speaker switch is
amazingly more convenient. Some commercial grade receivers have this
feature; not sure if there is any ham gear which has it.

Doesn't the K3 have a 1/4" jack (vs 1/8")? That alone will make it a
lot more durable. Still, sure would like  to have a headphone/speaker
switch. I guess my question would be: how strong is the insertion
force on the jack? If it's more than about 4 or 5 pounds you will have
to hold the radio down to plug and unplug it; IOW, a two-handed
operation.

73,
Drew
AF2Z

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Re: [K3] front phones socket duability

M0XDF
As per suggestions, I programmed PF1 and PF2 to switch CONFIG:SPKR+Ph from
OFF to ON, plug the 3.5mm jack of Proset into rear socket and just switch
with PF1/2

73 de M0XDF, K3 # 174, HexKey # 375

On 17/1/08 13:56, "[hidden email]" <[hidden email]> sent:

> On Wed, 16 Jan 2008 18:48:47 +0000, "David Ferrington, M0XDF" wrote:
>
>> I find I'm plugging the phones line on my Proset, in and out of the front
>> phones socket quite a lot (> 20 times a day perhaps)
>> Anyone any idea of the durability the socket?
>
> That is also how I use the headphones: constantly jumping between them
> and speaker. When I replaced the jack on my K2 I decided to add a
> headphone/speaker switch on the rear panel. I can switch back and
> forth between headphones and speaker with no worry about wearing out
> the jack.
>
> But apart from the durability issue, the headphone/speaker switch is
> amazingly more convenient. Some commercial grade receivers have this
> feature; not sure if there is any ham gear which has it.
>
> Doesn't the K3 have a 1/4" jack (vs 1/8")? That alone will make it a
> lot more durable. Still, sure would like  to have a headphone/speaker
> switch. I guess my question would be: how strong is the insertion
> force on the jack? If it's more than about 4 or 5 pounds you will have
> to hold the radio down to plug and unplug it; IOW, a two-handed
> operation.
--
I don't mind that you think slowly but I do mind that you are publishing
faster than you think.
-Wolfgang Pauli, physicist, Nobel laureate (1900-1958)



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Re: [K3] front phones socket duability

Greg - AB7R
In reply to this post by M0XDF
The suggested remedy for this was to use the rear phones jack and keep the phones
connected at all times.  Set CONFIG SPKR + PHONES set to YES.  This way they're
both on all the time and you just pick up your phones when you need them.

-------------------------
73,
Greg - AB7R
Whidbey Island WA
NA-065
K3#0009

On Thu Jan 17  5:56 , [hidden email] sent:

>On Wed, 16 Jan 2008 18:48:47 +0000, "David Ferrington, M0XDF" wrote:
>
>>I find I'm plugging the phones line on my Proset, in and out of the front
>>phones socket quite a lot (> 20 times a day perhaps)
>>Anyone any idea of the durability the socket?
>
>
>That is also how I use the headphones: constantly jumping between them
>and speaker. When I replaced the jack on my K2 I decided to add a
>headphone/speaker switch on the rear panel. I can switch back and
>forth between headphones and speaker with no worry about wearing out
>the jack.
>
>But apart from the durability issue, the headphone/speaker switch is
>amazingly more convenient. Some commercial grade receivers have this
>feature; not sure if there is any ham gear which has it.
>
>Doesn't the K3 have a 1/4" jack (vs 1/8")? That alone will make it a
>lot more durable. Still, sure would like  to have a headphone/speaker
>switch. I guess my question would be: how strong is the insertion
>force on the jack? If it's more than about 4 or 5 pounds you will have
>to hold the radio down to plug and unplug it; IOW, a two-handed
>operation.
>
>73,
>Drew
>AF2Z
>
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>You must be a subscriber to post to the list.
>Subscriber Info (Addr. Change, sub, unsub etc.):
> http://mailman.qth.net/mailman/listinfo/elecraft   
>
>Help: http://mailman.qth.net/subscribers.htm
>Elecraft web page: http://www.elecraft.com


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Re: [K3] front phones socket duability

Leigh L. Klotz Jr WA5ZNU
Administrator
I have found that SPKR+PH disables the AFX feature, so I set PF RIT to  
that menu item.  It thougtfully toggles itself when you push and hold
RIT.
73,
Leigh/WA5ZNU
On Thu, 17 Jan 2008 7:10 am, Greg - AB7R wrote:
> The suggested remedy for this was to use the rear phones jack and keep
> the phones
> connected at all times.  Set CONFIG SPKR + PHONES set to YES.  This way
> they're
> both on all the time and you just pick up your phones when you need
> them.
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Re: [K3] front phones socket duability

M0XDF
Set CONFIG:SPKRS = 2 and then it won't drop out

On 17/1/08 15:29, "Leigh L Klotz, Jr." <[hidden email]> sent:

> I have found that SPKR+PH disables the AFX feature, so I set PF RIT to
> that menu item.  It thougtfully toggles itself when you push and hold
> RIT.
> 73,
> Leigh/WA5ZNU
> On Thu, 17 Jan 2008 7:10 am, Greg - AB7R wrote:
>> The suggested remedy for this was to use the rear phones jack and keep
>> the phones
>> connected at all times.  Set CONFIG SPKR + PHONES set to YES.  This way
>> they're
>> both on all the time and you just pick up your phones when you need
>> them.
--
If a man will begin with certainties, he shall end in doubts; but if he
will be content to begin with doubts, he shall end in certainties.
-Francis Bacon, essayist, philosopher, and statesman (1561-1626)


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Re: [K3] front phones socket duability

M0XDF
In reply to this post by Greg - AB7R
Yes, that's what I'm doing, but using PF1/2 to toggle that, so the speaker
is not on when I'm listening through phones - since I'm listening through
phones to avoid annoying the rest of the family !
It's working well.

On 17/1/08 15:09, "Greg - AB7R" <[hidden email]> sent:
> The suggested remedy for this was to use the rear phones jack and keep the
> phones connected at all times.  Set CONFIG SPKR + PHONES set to YES
> This way they're both on all the time and you just pick up your phones when
> you need them.
--
Sometimes I think we're alone in the universe, and sometimes I think
we're not. In either case, the idea is quite staggering.
-Arthur C Clarke, science fiction writer (1917- )


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Re: [K3] front phones socket duability

Leigh L. Klotz Jr WA5ZNU
Administrator
In reply to this post by M0XDF
Thanks! I had no idea.

Hmmm...I wonder what happens to the other channel on the internal
speaker?  Perhaps it's or'd in with a resistor.  I will have to see what
it sounds like with the AFX on.
73,
Leigh/WA5ZNU
On Thu, 17 Jan 2008 8:15 am, David Ferrington, M0XDF wrote:

> Set CONFIG:SPKRS = 2 and then it won't drop out
>
> On 17/1/08 15:29, "Leigh L Klotz, Jr." <[hidden email]> sent:
>
>>  I have found that SPKR+PH disables the AFX feature, so I set PF RIT to
>>  that menu item.  It thougtfully toggles itself when you push and hold
>>  RIT.
>>  73,
>>  Leigh/WA5ZNU
>>  On Thu, 17 Jan 2008 7:10 am, Greg - AB7R wrote:
>>>  The suggested remedy for this was to use the rear phones jack and keep
>>>  the phones
>>>  connected at all times.  Set CONFIG SPKR + PHONES set to YES.  This
>>> way
>>>  they're
>>>  both on all the time and you just pick up your phones when you need
>>>  them.
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Re: [K3] front phones socket duability

M0XDF
RTEM - Read The Elecraft Manual :)
Cover-to-cover - 3 times now - learn something new every time :-)


On 17/1/08 16:26, "Leigh L Klotz, Jr." <[hidden email]> sent:

> Thanks! I had no idea.
>
> Hmmm...I wonder what happens to the other channel on the internal
> speaker?  Perhaps it's or'd in with a resistor.  I will have to see what
> it sounds like with the AFX on.
> 73,
> Leigh/WA5ZNU
> On Thu, 17 Jan 2008 8:15 am, David Ferrington, M0XDF wrote:
>> Set CONFIG:SPKRS = 2 and then it won't drop out
>>
>> On 17/1/08 15:29, "Leigh L Klotz, Jr." <[hidden email]> sent:
>>
>>>  I have found that SPKR+PH disables the AFX feature, so I set PF RIT to
>>>  that menu item.  It thougtfully toggles itself when you push and hold
>>>  RIT.
>>>  73,
>>>  Leigh/WA5ZNU
>>>  On Thu, 17 Jan 2008 7:10 am, Greg - AB7R wrote:
>>>>  The suggested remedy for this was to use the rear phones jack and keep
>>>>  the phones
>>>>  connected at all times.  Set CONFIG SPKR + PHONES set to YES.  This
>>>> way
>>>>  they're
>>>>  both on all the time and you just pick up your phones when you need
>>>>  them.

--
A society grows great when old men plant trees whose shade
they know they shall never sit in. -Greek proverb


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Re: [K3] front phones socket duability

M0XDF
In reply to this post by M0XDF
In fact, I think it stays in all the time with this setting.


On 17/1/08 16:10, "David Ferrington, M0XDF" <[hidden email]> sent:

> Set CONFIG:SPKRS = 2 and then it won't drop out
>
> On 17/1/08 15:29, "Leigh L Klotz, Jr." <[hidden email]> sent:
>
>> I have found that SPKR+PH disables the AFX feature, so I set PF RIT to
>> that menu item.  It thougtfully toggles itself when you push and hold
>> RIT.
>> 73,
>> Leigh/WA5ZNU
>> On Thu, 17 Jan 2008 7:10 am, Greg - AB7R wrote:
>>> The suggested remedy for this was to use the rear phones jack and keep
>>> the phones
>>> connected at all times.  Set CONFIG SPKR + PHONES set to YES.  This way
>>> they're
>>> both on all the time and you just pick up your phones when you need
>>> them.

--
There are three truths: my truth, your truth, and the truth.
-Chinese proverb


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Re: [K3] front phones socket duability

KK7P
> In fact, I think it stays in all the time with this setting.
>> Set CONFIG:SPKRS = 2 and then it won't drop out

Here is what is happening.

If the DSP believes there is a monophonic listening channel in use
(SPKRS = 1, as in using the internal speaker and headphones not plugged
in) then all audio is folded in the left channel (which drives the
speaker), and the right channel is a duplicate of the left (in case you
have stereo headphone spluged in and SPKR+PH is set to YES).  That way,
if you had the sub-reciever, for example, piped to the right and the
main receiver piped to the left, you can hear both receivers in the speaker.

Most external speakers these days are mono, and there is no "ring"
terminal on the plug: it just has a tip and a shell.  When you plug such
a connector into the K3 external speaker jack, you are *shorting* the
right channel.  Not damaging, but not a Good Idea either.

So, the KIO3 board has a relay in series with the right channel output
to the speaker jack. If you have SPKRS = 1, then the relay remains open
(to disconnect the right channel speaker amplifier from the external
speaker jack) and it is safe to plug in a mono plug to the external
speaker jack.  And the radio will operate with identical audio in the
left and right channels, so your stereo phones will work properly.

If you set SPKRS = 2, then the relay closes, right channel audio is
passed to the stereo speaker jack (since you specifically told the radio
you were not plugging in a mono plug into the jack by manually setting
SPKRS = 2), and stereo audio is created as appropriate.

More than you ever wanted to know, but there it is.

73,

Lyle KK7P

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Re: [K3] front phones socket duability

KK7P
> If I have nothing plugged into the external speaker, and just want to
> toggle between headphones and internal speaker, what does the internal
> speaker do when spkrs=2?  That is my situation.

The internal speaker is wired to the Left channel.  Operationally, it
just means that you won't hear the stereo effects (AFX) (if enabled)
unless you plug in stereo headphones.  If you do plug in stereo
headphones, you'll hear the chosen AFX.

Later, if/when you install the subreceiver, you may or may not hear the
subreceiver audio, depending on how you set up the subreciever.

73,

Lyle KK7P

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Re: [K3] front phones socket duability

Leigh L. Klotz Jr WA5ZNU
Administrator
Thank you.  Then AFX wil have no effect on the internal speaker, which
is good.

To summarize, assiging SPKR+PH to the RIT PF keu and setting spkrs=2 is
a complete solution for people who use AFX and want to toggle between
headphones and internal speaker, and do so with one button push.

Leigh/WA5ZNU

On Thu, 17 Jan 2008 10:22 am, Lyle Johnson wrote:

>> If I have nothing plugged into the external speaker, and just want to
>> toggle between headphones and internal speaker, what does the internal
>> speaker do when spkrs=2?  That is my situation.
>
> The internal speaker is wired to the Left channel.  Operationally, it
> just means that you won't hear the stereo effects (AFX) (if enabled)
> unless you plug in stereo headphones.  If you do plug in stereo
> headphones, you'll hear the chosen AFX.
>
> Later, if/when you install the subreceiver, you may or may not hear the
> subreceiver audio, depending on how you set up the subreciever.
>
> 73,
>
> Lyle KK7P
>
> _______________________________________________
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