K3 KRX3 ANT

[Evert Bakker (PA2KW)]

I'm installing my KRX3 now and trying to figure out which configuration to
install.

After reading the KRX3 manual and the K3 manual and looking at the pictures
on page 40 (K3 manual),

 

I do have KAT3 and KXV3 installed.

I do have a separate RX antenna for the low bands.

I want to use the SUB-RX on the higher bands together with the main RX with
the same antenna and accept an increase of the NF by 3 dB.

 

Do I need the AUX RF BNC installed?

 

73's, Evert PA2KW

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[w0mu]

I do not need to hook up the aux cable.  You may wish to do so for future
use.  You might want to listen on a beverage for the lowbands on one
receiver and your tribander on 20m so in that case you would want both.  You
can select which antenna to use in the menu, main or aux.


"A slip of the foot you may soon recover, but a slip of the tongue you may
never get over." Ben Franklin
-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of Evert Bakker (PA2KW)
Sent: Wednesday, March 11, 2009 10:56 AM
To: 'Elecraft Discussion List'
Subject: [Elecraft] K3 KRX3 ANT

I'm installing my KRX3 now and trying to figure out which configuration to
install.

After reading the KRX3 manual and the K3 manual and looking at the pictures
on page 40 (K3 manual),

 

I do have KAT3 and KXV3 installed.

I do have a separate RX antenna for the low bands.

I want to use the SUB-RX on the higher bands together with the main RX with
the same antenna and accept an increase of the NF by 3 dB.

 

Do I need the AUX RF BNC installed?

 

73's, Evert PA2KW

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[w0mu]

You do not need to hook up the aux cable.  You may wish to do so for future
use.  You might want to listen on a beverage for the lowbands on one
receiver and your tribander on 20m so in that case you would want both.  You
can select which antenna to use in the menu, main or aux.


"A slip of the foot you may soon recover, but a slip of the tongue you may
never get over." Ben Franklin -----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of Evert Bakker (PA2KW)
Sent: Wednesday, March 11, 2009 10:56 AM
To: 'Elecraft Discussion List'
Subject: [Elecraft] K3 KRX3 ANT

I'm installing my KRX3 now and trying to figure out which configuration to
install.

After reading the KRX3 manual and the K3 manual and looking at the pictures
on page 40 (K3 manual),

 

I do have KAT3 and KXV3 installed.

I do have a separate RX antenna for the low bands.

I want to use the SUB-RX on the higher bands together with the main RX with
the same antenna and accept an increase of the NF by 3 dB.

 

Do I need the AUX RF BNC installed?

 

73's, Evert PA2KW

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[Don Wilhelm-4]

Evert,

Yes, I believe using the AUX RF BNC is the preferred solution for your case.
If the main receiver will be on a lower frequency than the sub, the low
pass filters will be set for the main RX/TX and would severely attenuate
the higher frequency input to the Sub RX.

It may make your external antenna connections or switching scheme a bit
more complex, but it is one of the compromises that one must make when
tuning different bands with one transceiver.

73,
Don W3FPR

Evert Bakker (PA2KW) wrote:

> I'm installing my KRX3 now and trying to figure out which configuration to
> install.
>
> After reading the KRX3 manual and the K3 manual and looking at the pictures
> on page 40 (K3 manual),
>
>  
>
> I do have KAT3 and KXV3 installed.
>
> I do have a separate RX antenna for the low bands.
>
> I want to use the SUB-RX on the higher bands together with the main RX with
> the same antenna and accept an increase of the NF by 3 dB.
>
>  
>
> Do I need the AUX RF BNC installed?
>
>  
>
> 73's, Evert PA2KW
>  
>

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