Elecraft

K3 synthesizer question

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Don Wilhelm-4

Re: K3 bugs

Dave,

Maybe I overlooked it in your initial post, but I did not realize you
had no microphone connected.
Given those additional facts, I also believe there is some kind of bug
causing it. It is good that you noticed it. I don't think the majority
of K3 users use it for AM mode (even though it does a good job there)
and may not have noticed.

73,
Don W3FPR

On 1/17/2015 3:48 PM, dave wrote:

> Don,
>
> There is no mic attached to the K3 here. This info was included in
> info sent to K3support.
>
> But, even if random noise was the case, why would it occur only when
> going into AM and not SSB or data?
>
> I think known bug.
>
> 73 de dave
> ab9ca/4
>
>
>
> On 1/17/15 2:25 PM, Don Wilhelm wrote:
>> Dave,
>>
>> I am just wondering if Elecraft support actually indicated that this
>> condition is a "known bug".
>>
>> I suspect that with VOX on, the "TX momentarily" would more likely be
>> caused by some sort of noise in the shack.
>> If you have the VOX set sensitive enough, then even tapping on the
>> operating desk or moving the microphone (or even chair 'squeaks) can
>> cause it to go into transmit easily.
>> If the ANTIVOX setting is too low, that may trip the K3 into transmit
>> with sound from the speaker (or leakage from the headphones.
>> You may want to check your MENU: VOX GN and MENU:ANTIVOX settings to
>> be certain they are not the problem.
>> Those settings are dependent on the sensitivity of the microphone,
>> proximity of the mic to the speakers, and other factors dependent on
>> your shack and the ambient noise conditions in the shack, so settings
>> that are good for one situation will likely not work well in your
>> situation. The K3 manual text gives some hints for achieving the
>> proper settings for your shack.
>>
>> 73,
>> Don W3FPR
>>
>> On 1/17/2015 3:09 PM, dave wrote:
>>>
>>> Since I'm the one who began this thread, I'll update with the info
>>> received from Elecraft. Someone might look it up and want to know . . .
>>>
>>> They say that, yes, when going into AM mode via the MODE button,
>>> with VOX ON, the K3 "will sometimes go into TX momentarily". So this
>>> is a known bug. And, since it is "sometimes", that would account for
>>> why it comes and goes on the K3 here.
>>>
>>
>>
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Re: K3 bugs

In reply to this post by Dave-7

Thanks for the update
I can also replicate this by turning on VOX and switching from Data to AM
Good Catch

From: dave <[hidden email]>
To: "[hidden email]" <[hidden email]>
Sent: Saturday, January 17, 2015 3:09 PM
Subject: Re: [Elecraft] K3 bugs

Since I'm the one who began this thread, I'll update with the info
received from Elecraft. Someone might look it up and want to know . . .

They say that, yes, when going into AM mode via the MODE button, with
VOX ON, the K3 "will sometimes go into TX momentarily". So this is a
known bug. And, since it is "sometimes", that would account for why it
comes and goes on the K3 here.

If I get any additional info I will pass it along.

Note that the quote above is an actual quote, not something I made up
and attributed to Elecraft. Have to put this disclaimer in here since
one responder made up a quote and attributed it to me . . .

73 de dave
ab9ca/4

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Howard Stephenson - K6IA

Re: K3 bugs

In reply to this post by Dave-7

Try increasing your ANTIVOX level to about 10 and see if that stops the
momentary TX when going from DATA to AM with VOX on.

73

Howard K6IA
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Re: K3 bugs

I just tried increasing mine to 10 and even 100 and itstill transmits when doing from Data to AM with VOX on.

From: Howard Stephenson <[hidden email]>
To: [hidden email]
Sent: Saturday, January 17, 2015 10:55 PM
Subject: Re: [Elecraft] K3 bugs

Try increasing your ANTIVOX level to about 10 and see if that stops the
momentary TX when going from DATA to AM with VOX on.

73

Howard K6IA
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daleputnam

Re: K3 bugs

I wonder...
Has anyone looked at the input to the vox circuit... before, during and after changing from data to am?
Is there a signal or a static dc impulse there that triggers the vox?

Have a great day,

--... ...--
Dale - WC7S in Wy

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Joe Subich, W4TV-4

Re: K3 bugs

In reply to this post by Elecraft mailing list

No problem here - VOX Gain = 30, AntiVOX = 0.

How high is your VOX Gain?

73,

... Joe, W4TV

On 2015-01-18 9:37 AM, Harry Yingst via Elecraft wrote:

>
> I just tried increasing mine to 10 and even 100 and itstill transmits when doing from Data to AM with VOX on.
>
>
>
>
>
>
>
> From: Howard Stephenson <[hidden email]>
> To: [hidden email]
> Sent: Saturday, January 17, 2015 10:55 PM
> Subject: Re: [Elecraft] K3 bugs
>
> Try increasing your ANTIVOX level to about 10 and see if that stops the
> momentary TX when going from DATA to AM with VOX on.
>
> 73
>
> Howard K6IA
> ______________________________________________________________
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>
>
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Elecraft mailing list

Re: K3 bugs

My VOX Gain was 15 and Anti VOX was 10
I tested at your settings VOX Gain= 30 and Anto VOX = 0 and the issue is still present
I'm running the latest Non-Beta FW (uC 04.86, d1 02.83, FL 01.15, dr 01.03)

From: "Joe Subich, W4TV" <[hidden email]>
To: [hidden email]
Sent: Sunday, January 18, 2015 12:28 PM
Subject: Re: [Elecraft] K3 bugs

No problem here - VOX Gain = 30, AntiVOX = 0.

How high is your VOX Gain?

73,

... Joe, W4TV

On 2015-01-18 9:37 AM, Harry Yingst via Elecraft wrote:

>
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