Elecraft

K3s subreceiver antenna not normally disconnected during transmit?

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N1EU

K3s subreceiver antenna not normally disconnected during transmit?

If I'm reading the manual correctly, the K3s subreceiver (KRX3)
antenna is NOT normally disconnected by a relay during transmit,
although there's a carrier-operated protection relay in-line. Am I
correct in this regard?

Thanks & 73,
Barry N1EU
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Milt -- N5IA

K3 sub RX off freq in SSB diversity mode

I normally don't have much to post here, but today I do have a question.

I discovered last night that I have the following situation.

When in SSB mode on 160 Meters and the 2nd RX is turned on, the SSB signals
are on the same frequency.

When I invoke the diversity mode, the 2nd RX is receiving at 1.5 kHz higher.

I tested this on numerous signals and at various frequencies; always the
same.

In the CW mode the problem does not exist. In diversity mode the CW signals
in both RXs are on the same frequency.

Anyone with an idea of what is happening here. I do not remember this
happening before. RIT is off.

I did not try other bands as I normally do not operate on other bands.

I have searched the archives but have not gotten a hit on anything like
this.

Any responses, direct or to the reflector would be appreciated.

Thanks in advance es 73 for now......

de Milt, N5IA

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dmb@lightstream.net

Re: K3 sub RX off freq in SSB diversity mode

Hello Milt,

I think this will occur with the original synthesizers, if you are using
dissimilar roofing filters while in diversity mode. For example, if you
have the 2.8 KHz filter installed in RX1, but the 2.7 KHz filter in RX2,
you will probably experience this (as I recall). If you can, try selecting
a bandwidth while in SSB mode where both receivers will be using the same
roofing filters (if they are installed), and see if the frequency shift
suddenly disappears.

I am not absolutely certain of the above, but I seem to remember that was
what I experienced before I upgraded to the the new synthesizers many
months ago.

73,
Dale WA8SRA

> I normally don't have much to post here, but today I do have a question.
>
> I discovered last night that I have the following situation.
>
> When in SSB mode on 160 Meters and the 2nd RX is turned on, the SSB
> signals
> are on the same frequency.
>
> When I invoke the diversity mode, the 2nd RX is receiving at 1.5 kHz
> higher.
>
> I tested this on numerous signals and at various frequencies; always the
> same.
>
> In the CW mode the problem does not exist. In diversity mode the CW
> signals
> in both RXs are on the same frequency.
>
> Anyone with an idea of what is happening here. I do not remember this
> happening before. RIT is off.
>
> I did not try other bands as I normally do not operate on other bands.
>
> I have searched the archives but have not gotten a hit on anything like
> this.
>
> Any responses, direct or to the reflector would be appreciated.
>
> Thanks in advance es 73 for now......
>
> de Milt, N5IA
>
> ______________________________________________________________
> 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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George Danner

Re: K3 sub RX off freq in SSB diversity mode

Dale & Milt,
That was fixed in firmware version MCR 5.33 DSP 2.86 in August of this year.
Some of us used a work around of averaging the filter offsets for both
filters. In SSB it was ok not sure of CW.
73
George
AI4VZ

-----Original Message-----
From: [hidden email]
Sent: Friday, December 11, 2015 10:05 PM
To: Milt -- N5IA
Cc: elecraft
Subject: Re: [Elecraft] K3 sub RX off freq in SSB diversity mode

Hello Milt,

I think this will occur with the original synthesizers, if you are using
dissimilar roofing filters while in diversity mode. For example, if you
have the 2.8 KHz filter installed in RX1, but the 2.7 KHz filter in RX2,
you will probably experience this (as I recall). If you can, try selecting
a bandwidth while in SSB mode where both receivers will be using the same
roofing filters (if they are installed), and see if the frequency shift
suddenly disappears.

I am not absolutely certain of the above, but I seem to remember that was
what I experienced before I upgraded to the the new synthesizers many
months ago.

73,
Dale WA8SRA

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Milt -- N5IA

Re: K3 sub RX off freq in SSB diversity mode

Thanks, guys. Back to it this AM. Had to take off yesterday before all the
replies came in.

Milt, N5IA

-----Original Message-----
From: George Danner
Sent: Saturday, December 12, 2015 6:52 AM
To: [hidden email] ; Milt -- N5IA
Cc: elecraft
Subject: Re: [Elecraft] K3 sub RX off freq in SSB diversity mode

Dale & Milt,
That was fixed in firmware version MCR 5.33 DSP 2.86 in August of this year.
Some of us used a work around of averaging the filter offsets for both
filters. In SSB it was ok not sure of CW.
73
George
AI4VZ

-----Original Message-----
From: [hidden email]
Sent: Friday, December 11, 2015 10:05 PM
To: Milt -- N5IA
Cc: elecraft
Subject: Re: [Elecraft] K3 sub RX off freq in SSB diversity mode

Hello Milt,

I think this will occur with the original synthesizers, if you are using
dissimilar roofing filters while in diversity mode. For example, if you
have the 2.8 KHz filter installed in RX1, but the 2.7 KHz filter in RX2,
you will probably experience this (as I recall). If you can, try selecting
a bandwidth while in SSB mode where both receivers will be using the same
roofing filters (if they are installed), and see if the frequency shift
suddenly disappears.

I am not absolutely certain of the above, but I seem to remember that was
what I experienced before I upgraded to the the new synthesizers many
months ago.

73,
Dale WA8SRA

______________________________________________________________
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Help: http://mailman.qth.net/mmfaq.htm
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Milt -- N5IA

Re: K3 sub RX off freq in SSB diversity mode

In reply to this post by Milt -- N5IA

Well, after following some suggested routines by various on and off list
repliers, the problem still exists.

Very strange. Any other suggestions before going to the big boys in HQs?

Milt, N5IA

-----Original Message-----
From: Milt -- N5IA
Sent: Friday, December 11, 2015 12:18 PM
To: elecraft
Subject: [Elecraft] K3 sub RX off freq in SSB diversity mode

I normally don't have much to post here, but today I do have a question.

I discovered last night that I have the following situation.

When in SSB mode on 160 Meters and the 2nd RX is turned on, the SSB signals
are on the same frequency.

When I invoke the diversity mode, the 2nd RX is receiving at 1.5 kHz higher.

I tested this on numerous signals and at various frequencies; always the
same.

In the CW mode the problem does not exist. In diversity mode the CW signals
in both RXs are on the same frequency.

Anyone with an idea of what is happening here. I do not remember this
happening before. RIT is off.

I did not try other bands as I normally do not operate on other bands.

I have searched the archives but have not gotten a hit on anything like
this.

Any responses, direct or to the reflector would be appreciated.

Thanks in advance es 73 for now......

de Milt, N5IA

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wayne burdick

Re: K3 sub RX off freq in SSB diversity mode

Administrator

Milt,

What firmware revision are you using? We made some changes in rev. 5.33 to allow for mixed crystal filter offsets in main/sub.

73,
Wayne
N6KR

On Dec 15, 2015, at 8:28 AM, "Milt -- N5IA" <[hidden email]> wrote:

> Well, after following some suggested routines by various on and off list repliers, the problem still exists.
>
> Very strange. Any other suggestions before going to the big boys in HQs?
>
> Milt, N5IA
>
>
> -----Original Message----- From: Milt -- N5IA
> Sent: Friday, December 11, 2015 12:18 PM
> To: elecraft
> Subject: [Elecraft] K3 sub RX off freq in SSB diversity mode
>
> I normally don't have much to post here, but today I do have a question.
>
> I discovered last night that I have the following situation.
>
> When in SSB mode on 160 Meters and the 2nd RX is turned on, the SSB signals
> are on the same frequency.
>
> When I invoke the diversity mode, the 2nd RX is receiving at 1.5 kHz higher.
>
> I tested this on numerous signals and at various frequencies; always the
> same.
>
> In the CW mode the problem does not exist. In diversity mode the CW signals
> in both RXs are on the same frequency.
>
> Anyone with an idea of what is happening here. I do not remember this
> happening before. RIT is off.
>
> I did not try other bands as I normally do not operate on other bands.
>
> I have searched the archives but have not gotten a hit on anything like
> this.
>
> Any responses, direct or to the reflector would be appreciated.
>
> Thanks in advance es 73 for now......
>
> de Milt, N5IA

Milt -- N5IA

Re: K3 sub RX off freq in SSB diversity mode

In reply to this post by Milt -- N5IA

I want to thank everyone who suggested ideas of what the problem source
might be.

Wayne answered with the exact answer.

I was able to make the trip to my remote site and updated the K3 firmware to
the latest version.

Problem fixed. The two receivers are on the same frequency when in
diversity mode.

Everyone out there have a great holiday season and a Merry Christmas.

73 de Milt, N5IA

-----Original Message-----
From: Milt -- N5IA
Sent: Friday, December 11, 2015 12:18 PM
To: elecraft
Subject: [Elecraft] K3 sub RX off freq in SSB diversity mode

I normally don't have much to post here, but today I do have a question.

I discovered last night that I have the following situation.

When in SSB mode on 160 Meters and the 2nd RX is turned on, the SSB signals
are on the same frequency.

When I invoke the diversity mode, the 2nd RX is receiving at 1.5 kHz higher.

I tested this on numerous signals and at various frequencies; always the
same.

In the CW mode the problem does not exist. In diversity mode the CW signals
in both RXs are on the same frequency.

Anyone with an idea of what is happening here. I do not remember this
happening before. RIT is off.

I did not try other bands as I normally do not operate on other bands.

I have searched the archives but have not gotten a hit on anything like
this.

Any responses, direct or to the reflector would be appreciated.

Thanks in advance es 73 for now......

de Milt, N5IA

______________________________________________________________
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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Help: http://mailman.qth.net/mmfaq.htm
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wayne burdick

Re: K3 sub RX off freq in SSB diversity mode

Administrator

Glad to hear it, Milt.

73 & Happy Holidays,

Wayne
N6KR

On Dec 22, 2015, at 8:13 PM, Milt -- N5IA <[hidden email]> wrote:

> I want to thank everyone who suggested ideas of what the problem source might be.
>
> Wayne answered with the exact answer.
>
> I was able to make the trip to my remote site and updated the K3 firmware to the latest version.
>
> Problem fixed. The two receivers are on the same frequency when in diversity mode.
>
> Everyone out there have a great holiday season and a Merry Christmas.
>
> 73 de Milt, N5IA
>
>
> -----Original Message----- From: Milt -- N5IA
> Sent: Friday, December 11, 2015 12:18 PM
> To: elecraft
> Subject: [Elecraft] K3 sub RX off freq in SSB diversity mode
>
> I normally don't have much to post here, but today I do have a question.
>
> I discovered last night that I have the following situation.
>
> When in SSB mode on 160 Meters and the 2nd RX is turned on, the SSB signals
> are on the same frequency.
>
> When I invoke the diversity mode, the 2nd RX is receiving at 1.5 kHz higher.
>
> I tested this on numerous signals and at various frequencies; always the
> same.
>
> In the CW mode the problem does not exist. In diversity mode the CW signals
> in both RXs are on the same frequency.
>
> Anyone with an idea of what is happening here. I do not remember this
> happening before. RIT is off.
>
> I did not try other bands as I normally do not operate on other bands.
>
> I have searched the archives but have not gotten a hit on anything like
> this.
>
> Any responses, direct or to the reflector would be appreciated.
>
> Thanks in advance es 73 for now......
>
> de Milt, N5IA
>
> ______________________________________________________________
> 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]

Milt -- N5IA

Re: K3 sub RX off freq in SSB diversity mode

And thank you, Sir, for the superb service.

73 de Milt, N5IA

-----Original Message-----
From: Wayne Burdick
Sent: Tuesday, December 22, 2015 10:59 PM
To: Milt -- N5IA
Cc: elecraft
Subject: Re: [Elecraft] K3 sub RX off freq in SSB diversity mode

Glad to hear it, Milt.

73 & Happy Holidays,

Wayne
N6KR

On Dec 22, 2015, at 8:13 PM, Milt -- N5IA <[hidden email]> wrote:

> I want to thank everyone who suggested ideas of what the problem source
> might be.
>
> Wayne answered with the exact answer.
>
> I was able to make the trip to my remote site and updated the K3 firmware
> to the latest version.
>
> Problem fixed. The two receivers are on the same frequency when in
> diversity mode.
>
> Everyone out there have a great holiday season and a Merry Christmas.
>
> 73 de Milt, N5IA
>
>
> -----Original Message----- From: Milt -- N5IA
> Sent: Friday, December 11, 2015 12:18 PM
> To: elecraft
> Subject: [Elecraft] K3 sub RX off freq in SSB diversity mode
>
> I normally don't have much to post here, but today I do have a question.
>
> I discovered last night that I have the following situation.
>
> When in SSB mode on 160 Meters and the 2nd RX is turned on, the SSB
> signals
> are on the same frequency.
>
> When I invoke the diversity mode, the 2nd RX is receiving at 1.5 kHz
> higher.
>
> I tested this on numerous signals and at various frequencies; always the
> same.
>
> In the CW mode the problem does not exist. In diversity mode the CW
> signals
> in both RXs are on the same frequency.
>
> Anyone with an idea of what is happening here. I do not remember this
> happening before. RIT is off.
>
> I did not try other bands as I normally do not operate on other bands.
>
> I have searched the archives but have not gotten a hit on anything like
> this.
>
> Any responses, direct or to the reflector would be appreciated.
>
> Thanks in advance es 73 for now......
>
> de Milt, N5IA
>
> ______________________________________________________________
> 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]