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K4 RX routing?

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Jim AB3CV

K4 RX routing?

Like many I'd like to get the feed from my RX antenna to both the RX in and
Aux in. Some just do a parallel connection while others use a splitter.

Does the K4 have any tricks up its sleeve to do this without an external
splitter?

Thanks

Jim ab3cv
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Carl Clawson-3

Re: K4 RX routing?

Further on this:

Please include a comprehensive description of RX antenna routing in the K4
manual. I could never understand the K3 with much confidence until I read
Fred Cady's KE7X (SK) book, and sadly Fred will not be writing a K4 book.
Just try figuring out what "RX Ant Out" does by reading the K3 manual. You
can GUESS what it does but a manual shouldn't leave you guessing.

73 -- Carl WS7L

On Mon, Nov 18, 2019 at 8:54 AM Jim Miller <[hidden email]> wrote:

> Like many I'd like to get the feed from my RX antenna to both the RX in and
> Aux in. Some just do a parallel connection while others use a splitter.
>
> Does the K4 have any tricks up its sleeve to do this without an external
> splitter?
>
> Thanks
>
> Jim ab3cv
> ______________________________________________________________
> 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: K4 RX routing?

Administrator

Carl,

I’m out if town today but will reply in detail when I return.

73,
Wayne
N6KR

----
elecraft.com

> On Nov 18, 2019, at 9:21 AM, Carl Clawson <[hidden email]> wrote:
>
> Further on this:
>
> Please include a comprehensive description of RX antenna routing in the K4
> manual. I could never understand the K3 with much confidence until I read
> Fred Cady's KE7X (SK) book, and sadly Fred will not be writing a K4 book.
> Just try figuring out what "RX Ant Out" does by reading the K3 manual. You
> can GUESS what it does but a manual shouldn't leave you guessing.
>
> 73 -- Carl WS7L
>
>> On Mon, Nov 18, 2019 at 8:54 AM Jim Miller <[hidden email]> wrote:
>>
>> Like many I'd like to get the feed from my RX antenna to both the RX in and
>> Aux in. Some just do a parallel connection while others use a splitter.
>>
>> Does the K4 have any tricks up its sleeve to do this without an external
>> splitter?
>>
>> Thanks
>>
>> Jim ab3cv
>> ______________________________________________________________
>> 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
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Doug Turnbull

Re: K4 RX routing?

In reply to this post by Carl Clawson-3

Dear OMs and YLs,
Carl is absolutely right. The K4 and its different variations is a
complex radio. We need someone to write a "Lady Bird" users guide. Fred
Cady did a great job and is sorely missed. Now Elecraft has a new
challenge. You produce good manuals but perhaps did not have the time to
do what Fred did and after all Fred was a retired EE professor - a great
teacher. The manual is important! You are writing in your native tongue
and hopefully will do a great job as you do every where else.

73 Doug EI2CN

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of Carl Clawson
Sent: 18 November 2019 17:21
To: Elecraft Reflector
Subject: Re: [Elecraft] K4 RX routing?

Further on this:

Please include a comprehensive description of RX antenna routing in the K4
manual. I could never understand the K3 with much confidence until I read
Fred Cady's KE7X (SK) book, and sadly Fred will not be writing a K4 book.
Just try figuring out what "RX Ant Out" does by reading the K3 manual. You
can GUESS what it does but a manual shouldn't leave you guessing.

73 -- Carl WS7L

On Mon, Nov 18, 2019 at 8:54 AM Jim Miller <[hidden email]> wrote:

> Like many I'd like to get the feed from my RX antenna to both the RX in
and

> Aux in. Some just do a parallel connection while others use a splitter.
>
> Does the K4 have any tricks up its sleeve to do this without an external
> splitter?
>
> Thanks
>
> Jim ab3cv
> ______________________________________________________________
> 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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wayne burdick

Re: K4 RX routing?

Administrator

This topic, like others, will be covered more extensively than in past manuals.

Wayne
N6KR

> On Nov 18, 2019, at 1:13 PM, Doug Turnbull <[hidden email]> wrote:
>
> Dear OMs and YLs,
> Carl is absolutely right. The K4 and its different variations is a
> complex radio. We need someone to write a "Lady Bird" users guide. Fred
> Cady did a great job and is sorely missed. Now Elecraft has a new
> challenge. You produce good manuals but perhaps did not have the time to
> do what Fred did and after all Fred was a retired EE professor - a great
> teacher. The manual is important! You are writing in your native tongue
> and hopefully will do a great job as you do every where else.
>
> 73 Doug EI2CN
>
> -----Original Message-----
> From: [hidden email]
> [mailto:[hidden email]] On Behalf Of Carl Clawson
> Sent: 18 November 2019 17:21
> To: Elecraft Reflector
> Subject: Re: [Elecraft] K4 RX routing?
>
> Further on this:
>
> Please include a comprehensive description of RX antenna routing in the K4
> manual. I could never understand the K3 with much confidence until I read
> Fred Cady's KE7X (SK) book, and sadly Fred will not be writing a K4 book.
> Just try figuring out what "RX Ant Out" does by reading the K3 manual. You
> can GUESS what it does but a manual shouldn't leave you guessing.
>
> 73 -- Carl WS7L
>
> On Mon, Nov 18, 2019 at 8:54 AM Jim Miller <[hidden email]> wrote:
>
>> Like many I'd like to get the feed from my RX antenna to both the RX in
> and
>> Aux in. Some just do a parallel connection while others use a splitter.
>>
>> Does the K4 have any tricks up its sleeve to do this without an external
>> splitter?
>>
>> Thanks
>>
>> Jim ab3cv
>> ______________________________________________________________
>> 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]

wayne burdick

Re: K4 RX routing?

Administrator

In reply to this post by Jim AB3CV

Jim,

Here's a short answer for now. As I posted earlier, the manual will cover this in detail. Bottom line: you won't need any external splitters.

There are two RX antenna inputs (RX IN 1 and RX IN 2) on the K4. Either can be used with the main receiver, sub receiver, or both. Also, one of the three antenna jacks associated with the KAT4 ATU (ANT 1/2/3) can be selected as a receive-only antenna for use with either or both receivers.

This makes a total of 5 possible RX antenna sources. The user interface makes this very easy, with a switch for selecting the RX antenna for each receiver.

To your point: Whenever the two receivers are sharing an antenna (either RX IN 1/2, or the TX antenna, or the specified RX-only ATU antenna), a 3 dB splitter is engaged.

Note that the above applies to the K4D and K4HD. In a basic K4, you can still do dual receive (even on different bands), but since there's only one A-to-D converter in this case, one antenna input (of 5 possible) would be selected for the main RX, and the sub RX, when turned on, would share this antenna inherently (since both receivers would be derived from the same ADC).

73,
Wayne
N6KR

> On Nov 18, 2019, at 8:52 AM, Jim Miller <[hidden email]> wrote:
>
> Like many I'd like to get the feed from my RX antenna to both the RX in and
> Aux in. Some just do a parallel connection while others use a splitter.
>
> Does the K4 have any tricks up its sleeve to do this without an external
> splitter?
>
> Thanks
>
> Jim ab3cv
> ______________________________________________________________
> 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]

Doug Turnbull

Re: K4 RX routing?

In reply to this post by wayne burdick

Elecraft is the home of champions. 73 Doug EI2CNSent from my Samsung Galaxy smartphone.
-------- Original message --------From: Wayne Burdick <[hidden email]> Date: 19/11/2019 16:06 (GMT+00:00) To: Doug Turnbull <[hidden email]> Cc: Carl Clawson <[hidden email]>, Elecraft Reflector <[hidden email]> Subject: Re: [Elecraft] K4 RX routing? This topic, like others, will be covered more extensively than in past manuals. WayneN6KR> On Nov 18, 2019, at 1:13 PM, Doug Turnbull <[hidden email]> wrote:> > Dear OMs and YLs,> Carl is absolutely right. The K4 and its different variations is a> complex radio. We need someone to write a "Lady Bird" users guide. Fred> Cady did a great job and is sorely missed. Now Elecraft has a new> challenge. You produce good manuals but perhaps did not have the time to> do what Fred did and after all Fred was a retired EE professor - a great> teacher. The manual is important! You are writing in your native tongue> and hopefully will do a great job as you do every where else.> > 73 Doug EI2CN> > -----Original Message-----> From: [hidden email]> [mailto:[hidden email]] On Behalf Of Carl Clawson> Sent: 18 November 2019 17:21> To: Elecraft Reflector> Subject: Re: [Elecraft] K4 RX routing?> > Further on this:> > Please include a comprehensive description of RX antenna routing in the K4> manual. I could never understand the K3 with much confidence until I read> Fred Cady's KE7X (SK) book, and sadly Fred will not be writing a K4 book.> Just try figuring out what "RX Ant Out" does by reading the K3 manual. You> can GUESS what it does but a manual shouldn't leave you guessing.> > 73 -- Carl WS7L> > On Mon, Nov 18, 2019 at 8:54 AM Jim Miller <[hidden email]> wrote:> >> Like many I'd like to get the feed from my RX antenna to both the RX in> and>> Aux in. Some just do a parallel connection while others use a splitter.>> >> Does the K4 have any tricks up its sleeve to do this without an external>> splitter?>> >> Thanks>> >> Jim ab3cv>> ______________________________________________________________>> 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]
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W8JH

Re: K4 RX routing?

In reply to this post by wayne burdick

And if you do NOT want the antenna tuner how many inputs would you have on a
K4 and a K4D?

73,

Joe, W8JH

-----
73,

Joe, W8JH

K3s, KPA 500, KAT 500 and KX3 happy user.
--
Sent from: http://elecraft.365791.n2.nabble.com/
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73,

Joe, W8JH

K3s, KPA 500, KAT 500 and KX3 happy user.

wayne burdick

Re: K4 RX routing?

Administrator

Three: ANT1 (RX/TX), RX ANT IN 1 (RX), RX ANT IN 2 (RX).

The optional transverter module has its own antenna jack, so technically the maximum number of RF inputs is four.

Wayne
N6KR

> On Nov 21, 2019, at 10:29 AM, W8JH <[hidden email]> wrote:
>
> And if you do NOT want the antenna tuner how many inputs would you have on a
> K4 and a K4D?
>
> 73,
>
> Joe, W8JH
>
>
>
> -----
> 73,
>
> Joe, W8JH
>
> K3s, KPA 500, KAT 500 and KX3 happy user.
> --
> Sent from: http://elecraft.365791.n2.nabble.com/