Not hearing signals in K2 with EC2 enclosure KPA100/KAT100 combo

[Brian Pepperdine]

On the weekend, I picked up  a nice K2 set - a K2 with internal tuner and battery, plus the remoting of the
KAT100 and KPA100 built into an EC2 enclosure.

All set up for QRP in  field/portabl/patio or full 100 watts in the shack.



But an odd thing... this all came from a very reliable ham (a techical guy of long standing circa. 1957 onward) and it was
built according to the KK7P web page guidelines, with a printout of Lyle's pages on this from the web site.

It does NOT hear RF signals when in the paired mode with amp/tuner connected.
I have it set up as per the photos.. with DB9 cable between the I/O Aux jacks on the PA/KAT and the base K2, and antenna attaches to ANT 1 UHF jack on the PA/KAT box.

I hear RF fine if I put the antenna line on the basic K2 BNC Antenna 1 jack, but nothing heard in the full setup.

I read the pages.. it seems the K2 is to have the tuner set at CAL from what I read, but whether in CAL or in Auto.. I still get nothing heard.

I am assuming the RF somehow, somewhere passes from the K2 to the PA/KAT via this IO Aux line?

Any ideas...?

I figured it would be all ready to go.. sort of direct from his shack table onto mine, but something seems amiss.

tnx
Brien
VE3VAW
     
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[Don Wilhelm-4]

  Brian,

Do you have a BNC cable between the QRP antenna jack (or ANT1 of the
KAT2) and the RF in jack of the KAT100?  That is where the RF must flow
- RF does not flow on any of the lines in the AUX I/O cable.

73,
Don W3FPR

On 3/28/2011 8:28 AM, Brian Pepperdine wrote:

> On the weekend, I picked up  a nice K2 set - a K2 with internal tuner and battery, plus the remoting of the
> KAT100 and KPA100 built into an EC2 enclosure.
>
> All set up for QRP in  field/portabl/patio or full 100 watts in the shack.
>
>
>
> But an odd thing... this all came from a very reliable ham (a techical guy of long standing circa. 1957 onward) and it was
> built according to the KK7P web page guidelines, with a printout of Lyle's pages on this from the web site.
>
> It does NOT hear RF signals when in the paired mode with amp/tuner connected.
> I have it set up as per the photos.. with DB9 cable between the I/O Aux jacks on the PA/KAT and the base K2, and antenna attaches to ANT 1 UHF jack on the PA/KAT box.
>
> I hear RF fine if I put the antenna line on the basic K2 BNC Antenna 1 jack, but nothing heard in the full setup.
>
> I read the pages.. it seems the K2 is to have the tuner set at CAL from what I read, but whether in CAL or in Auto.. I still get nothing heard.
>
> I am assuming the RF somehow, somewhere passes from the K2 to the PA/KAT via this IO Aux line?
>
> Any ideas...?
>
> I figured it would be all ready to go.. sort of direct from his shack table onto mine, but something seems amiss.
>
> tnx
> Brien
> VE3VAW
>    
> ______________________________________________________________
> 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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[Lou Voerman W2ROW]

Hi - this may be obvious and if so - sorry.

You need two RF cables (plus the antenna cable itself) to make this work. First a BNC to BNC cable goes from the K2 ANT1 jack to the AUX RF jack on the rear panel of the KAT100 this provides an RF path from the K2 to the KPA100 via an internal (to the KAT100/KPA100 box) coax. You also need a PL259 to PL259 cable from the ANT.(50ohm) jack on the KPA100 to the RF IN jack on the KAT100. This connects the ouput of the KPA100 to the input of the KAT100. Now you can connect the antenna to the PL259 ANT1 jack on the KAT100.

Of course you also need to power the K2 via it normal power jack and the KAT100/KPA100 box via the Anderson Power Pole connector on the KPA100.

You mentioned that you have the control cable connected between the K2 and the external box.

Hope this helps - I built and use this combination all the time.

Lou  W2ROW

[Alan D. Wilcox, W3DVX]

Brian,
Perhaps a photo or two might help.
http://wilcoxengineering.com/amateur-radio/kpa100inec2
Cheers,
Alan

Alan D. Wilcox, W3DVX (K2-5373, K3-40)
570-321-1516
http://WilcoxEngineering.com
http://eBookEditor.net
https://www.smashwords.com/books/view/28062?ref=awilcox
Williamsport, PA 17701


On 3/28/11 8:28 AM, Brian Pepperdine wrote:

> On the weekend, I picked up  a nice K2 set - a K2 with internal tuner and battery, plus the remoting of the
> KAT100 and KPA100 built into an EC2 enclosure.
>
> All set up for QRP in  field/portabl/patio or full 100 watts in the shack.
>
>
>
> But an odd thing... this all came from a very reliable ham (a techical guy of long standing circa. 1957 onward) and it was
> built according to the KK7P web page guidelines, with a printout of Lyle's pages on this from the web site.
>
> It does NOT hear RF signals when in the paired mode with amp/tuner connected.
> I have it set up as per the photos.. with DB9 cable between the I/O Aux jacks on the PA/KAT and the base K2, and antenna attaches to ANT 1 UHF jack on the PA/KAT box.
>
> I hear RF fine if I put the antenna line on the basic K2 BNC Antenna 1 jack, but nothing heard in the full setup.
>
> I read the pages.. it seems the K2 is to have the tuner set at CAL from what I read, but whether in CAL or in Auto.. I still get nothing heard.
>
> I am assuming the RF somehow, somewhere passes from the K2 to the PA/KAT via this IO Aux line?
>
> Any ideas...?
>
> I figured it would be all ready to go.. sort of direct from his shack table onto mine, but something seems amiss.
>
> tnx
> Brien
> VE3VAW
>  

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Post: mailto:[hidden email]

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