Elecraft

K3 RX only in port - still confused?

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Bill W4ZV

K3 RX only in port - still confused?

G4GED:
>Simply put, my primary initial use for the K3 would be for 160m DXing using
seperate RX antennas, so an RX-only i/p port is essential.

>Please dont confuse me with too many fancy options. If I order the basic
unit+ Sub rcvr, what's the minimum accessory I need to order to provide a
RX-only i/p port function for the use intended above?

Dave you need a KXV3 to get a primaryRX ANT input for the
Main RX. The Sub RX can
use ANT 1 (TX antenna) or it can use the AUX RF
input for a secondary RX antenna input. The
K3 may not come wired for the latter but I am
told it can be configured by the user that way.
This all assumes you do not have the KAT3
which provides yet another alternative with ANT 2.

I may wire up an external Magic-T splitter
to split my RX antenna between RX ANT and AUX RF.
This way I can use the same RX antenna for both
receivers which might be useful when operating
split with a pileup. For diversity RX, I would
use my vertical TX array (ANT 1) to the Main RX
and would use a Beverage on AUX RF (after it
went through the splitter). There will be a 3
dB loss to both sides of the splitter output but
this is not a significant issue for the low bands
where you are normally using RX antennas.

In summary, order your K3 with KRX3 and
KXV3. This should give you exactly what you
need. I believe there may eventually be an
antenna only module which will preclude the need
for a KXV3, but I also want the wideband buffered
IF OUT on the KXV3 for an SDR bandscope, so I
don't feel too bad about getting the $79 KXV3.

73, Bill W4ZV

P.S. Think I got this right but Ed W0YK will
correct me if I didn't.

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Robert Dorchuck W6VY

Re: K3 RX only in port - still confused?

Now I'm confused. From the FAQ's:
----
If the transverter option is not installed, can the K3 use ANT2 as a de
facto RX ANT?

Yes. If the KXV3 is not installed, you can designate either antenna to
either receiver.
----
I can't see why I would have to order the transverter option
(which I have no use for) to use two antennas.

Bob W6VY

--- Bill Tippett <[hidden email]> wrote:

>
>
> G4GED:
> >Simply put, my primary initial use for the K3 would be for 160m
> DXing using
> seperate RX antennas, so an RX-only i/p port is essential.
>
> >Please dont confuse me with too many fancy options. If I order the
> basic
> unit+ Sub rcvr, what's the minimum accessory I need to order to
> provide a
> RX-only i/p port function for the use intended above?
>
> Dave you need a KXV3 to get a primaryRX ANT input for the
> Main RX. The Sub RX can
> use ANT 1 (TX antenna) or it can use the AUX RF
> input for a secondary RX antenna input. The
> K3 may not come wired for the latter but I am
> told it can be configured by the user that way.
> This all assumes you do not have the KAT3
> which provides yet another alternative with ANT 2.
>
> I may wire up an external Magic-T splitter
> to split my RX antenna between RX ANT and AUX RF.
> This way I can use the same RX antenna for both
> receivers which might be useful when operating
> split with a pileup. For diversity RX, I would
> use my vertical TX array (ANT 1) to the Main RX
> and would use a Beverage on AUX RF (after it
> went through the splitter). There will be a 3
> dB loss to both sides of the splitter output but
> this is not a significant issue for the low bands
> where you are normally using RX antennas.
>
> In summary, order your K3 with KRX3 and
> KXV3. This should give you exactly what you
> need. I believe there may eventually be an
> antenna only module which will preclude the need
> for a KXV3, but I also want the wideband buffered
> IF OUT on the KXV3 for an SDR bandscope, so I
> don't feel too bad about getting the $79 KXV3.
>
> 73, Bill W4ZV
>
> P.S. Think I got this right but Ed W0YK will
> correct me if I didn't.
>
>
>
> _______________________________________________
> Elecraft mailing list
> Post to: [hidden email]
> 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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Ed K1EP

Re: K3 RX only in port - still confused?

At 8/25/2007 06:36 PM, Robert Dorchuck W6VY wrote:
>Now I'm confused. From the FAQ's:

Now I am confused. Lyle indicates that the standard K3 has only one Antenna port. You require either a KXV3 or KAT3 to get another. I would think that the KXV3 is the less expensive alternative to get a second antenna.

>From: Lyle Johnson <[hidden email]>
>Subject: Re: [Elecraft] K3 Configuration Questions
>Date: Mon, 30 Apr 2007 07:35:24 -0700
>
>>1. Is the RX antenna input for 160-6m a standard
>>part of the K3 or is a KXV3 also required?
>
>The RX in and RX Out jacks are part of the KXV3 option.
>
>>2. Is a KAT3 required for a 2nd TX antenna input?
>
>The KAT3 has two antenna jacks. The K3 without a KAT3 has one.

>----
>If the transverter option is not installed, can the K3 use ANT2 as a de
>facto RX ANT?
>
>Yes. If the KXV3 is not installed, you can designate either antenna to
>either receiver.
>----
>I can't see why I would have to order the transverter option
>(which I have no use for) to use two antennas.
>
>Bob W6VY
>
>--- Bill Tippett <[hidden email]> wrote:
>
>>
>>
>> G4GED:
>> >Simply put, my primary initial use for the K3 would be for 160m
>> DXing using
>> seperate RX antennas, so an RX-only i/p port is essential.
>>
>> >Please dont confuse me with too many fancy options. If I order the
>> basic
>> unit+ Sub rcvr, what's the minimum accessory I need to order to
>> provide a
>> RX-only i/p port function for the use intended above?
>>
>> Dave you need a KXV3 to get a primaryRX ANT input for the
>> Main RX. The Sub RX can
>> use ANT 1 (TX antenna) or it can use the AUX RF
>> input for a secondary RX antenna input. The
>> K3 may not come wired for the latter but I am
>> told it can be configured by the user that way.
>> This all assumes you do not have the KAT3
>> which provides yet another alternative with ANT 2.
>>
>> I may wire up an external Magic-T splitter
>> to split my RX antenna between RX ANT and AUX RF.
>> This way I can use the same RX antenna for both
>> receivers which might be useful when operating
>> split with a pileup. For diversity RX, I would
>> use my vertical TX array (ANT 1) to the Main RX
>> and would use a Beverage on AUX RF (after it
>> went through the splitter). There will be a 3
>> dB loss to both sides of the splitter output but
>> this is not a significant issue for the low bands
>> where you are normally using RX antennas.
>>
>> In summary, order your K3 with KRX3 and
>> KXV3. This should give you exactly what you
>> need. I believe there may eventually be an
>> antenna only module which will preclude the need
>> for a KXV3, but I also want the wideband buffered
>> IF OUT on the KXV3 for an SDR bandscope, so I
>> don't feel too bad about getting the $79 KXV3.
>>
>> 73, Bill W4ZV
>>
>> P.S. Think I got this right but Ed W0YK will
>> correct me if I didn't.
>>
>>
>>
>> _______________________________________________
>> Elecraft mailing list
>> Post to: [hidden email]
>> 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
>>
>
>_______________________________________________
>Elecraft mailing list
>Post to: [hidden email]
>You must be a subscriber to post to the list.
>Subscriber Info (Addr. Change, sub, unsub etc.):
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>
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>Elecraft web page: http://www.elecraft.com

John-483

Re: K3 RX only in port - still confused?

In reply to this post by Bill W4ZV

At 04:48 PM 25/08/07, John wrote:

>At 04:36 PM 25/08/07, you wrote:
>>Now I'm confused. From the FAQ's:
>>----
>>If the transverter option is not installed, can the K3 use ANT2 as a de
>>facto RX ANT?
>>
>>Yes. If the KXV3 is not installed, you can designate either antenna to
>>either receiver.
>>----
>>I can't see why I would have to order the transverter option
>>(which I have no use for) to use two antennas.

To have Ant1 & Ant2, you have to have the ATU option installed.

John,
k7up

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