Elecraft

Remote KPA-100 Kit

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Ci Jones

Remote KPA-100 Kit

Thanks to everyone who responded. I think I've got it now. Having it
explained has greatly simplified it for me, and I really appreciate this reflector.
I need a KIO2 to accomplish the change simply. If somebody has a used one
they would like to sell, I would like to buy one. If I can't find a used one, I
will order one when I order the EC2. Again, thanks to everyone...Ci

Ci Jones, WU7R
FISTS #10789
NAQCC #306
ARCI #12163
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NR5A

KAT 2

Ok, yes, I'm stupid, no I can't follow directions or understand them, I need
them on pre-school level I guess. I had my A ver, K2 brought up to a B
version, just got the K2 back today with all the upgrades. 160m module, KNB
2, and KAT 2 amoung the other stuff.

I'm sitting here, I hit the Menu button. Next I rotate the main tuning knob
to ATU AUTO just like the instructions say.

A fast push on the Menu button again returns the K2 to freq readout as it
should be. 7040

I've got the power output knob set to the 2nd dot turning it clockwise
wattmeter on K2 says 2.5watts.

I tap the ANT 1/2 button and I can see it go from ANT 2 to ANT 1, I assume
its on ANT 1 because no lil down arrows are on ANT 2.

Next I hit the ANT 1/2 button and hold it in a few seconds, I hear the
rattling of relays. I watch the WM-2 wattmeter I always keep inline. The
rattling stops, the cw tone stops, and the SWR is pegged, both in Ref and
Fwr positions. What am I doing wrong???

I have the directions open to page 18 and am following the Basic ATU
Operation (auto mode) step by step, or so I thought, What am I not doing?
I'm trying to tune back on 7040 and only hear static. There is a big
difference between Ant 1 and Ant 2 in noise level. Ant 1 is where the noise
is but no signals coming thru.

Its not my antenna, a hour ago using my FT-817 thru a T-1 tuner I was tuned
up on 40m. I used the K2 thru the T-1 before the conversion, and it worked
great. The antenna is a 22ft vert gnd mounted with 14 radials.

So can anyone see what I'm doing wrong?? And explain it to me so I can
understand it, remember your talking to a very frustrated stupid person.

Jerry - NR5A - South Dakota

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JEAN-FRANCOIS MENARD-3

Re: Remote KPA-100 Kit

In reply to this post by Ci Jones

Hi,

Take a look a the end of this web page...

http://homepage.mac.com/jfmenard/PhotoAlbum29.html

I put a few photos of my K2 and the external KPA100... really easy to
do... ;-)

Good luck !!!

=============================================
/¯\/¯\/¯\/¯\/¯\/¯\ JEAN-FRANCOIS MENARD
V A 2 V Y Z
\_/\_/\_/\_/\_/\_/

FISTS #11896
Elecraft K2 #4130
Elecraft KX1 #999

http://homepage.mac.com/jfmenard
=============================================

Le 05-12-01 à 21:23, [hidden email] a écrit :

> Thanks to everyone who responded. I think I've got it now. Having it
> explained has greatly simplified it for me, and I really appreciate
> this reflector.
> I need a KIO2 to accomplish the change simply. If somebody has a
> used one
> they would like to sell, I would like to buy one. If I can't find
> a used one, I
> will order one when I order the EC2. Again, thanks to everyone...Ci
>
> Ci Jones, WU7R
> FISTS #10789
> NAQCC #306
> ARCI #12163
> _______________________________________________
> 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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Dan Barker

RE: KAT 2

In reply to this post by NR5A

"So can anyone see what I'm doing wrong"

To connect a WM-2 in circuit with the KAT2, you'd need to open the case and
measure the power between the RF board and the KAT2 board. This is simply
not necessary. Use the power measurement capability of the KAT2.

If the load is very close to 50 ohm resistive, you can hook it up the way
you imply you've got it, and get reasonable measurements.

You say "the SWR is pegged". I don't know what that means. The KAT2 will
show various SWR ratios (not forward and/or reverse power) while in AUTO
mode, so you may be discussing some function/feature of the WM-2.

How does the KAT2 seem to work with the WM-2 out of the circuit?

Yes, ANT1 is indicated by an extinguished ANT2 enunciator.

"And explain it to me so I can understand it"

Power meters, such as the WM-2, expect to see 50 ohm loads. If you have a
different load, the power meter will display wildly different values. A
transmatch, antenna tuner, conjugate match, or whatever you call it will
show 50 ohms on the input (if adjusted correctly) and whatever the feedline
presents on the output. The only way to get a meaningful power measurement
is in the input, 50 ohm, side. Of course, this won't take into account any
inefficiencies in the tuner. To do that, you'd need to analyze the impedance
at the feedline, measure the RMS voltage at that point, and do some
arithmetic WAY over my head<g>. I'd suggest going with "Don't ask, don't
tell" - say what the K2 says.

Dan / WG4S / K2 #2456

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Don Nesbitt

Re: KAT 2

In reply to this post by NR5A

Hi Jerry -

First: if the WM-2 is between the K2 and the antenna, the results of the
KAT2 matching the K2 to the antenna will NOT show up on the WM-2! Why?
Because the WM-2 would have to be located INSIDE the K2 between the output
of the final transistors and the input to the KAT2 - and - it isn't!

But - when you use the T1, you likely do have the WM-2 between the rig (K2
or Yaesu) and the T1 - so - as the T1 matches to the antenna, the results DO
show up on the MW-2!

Pictorial view follows: (bad but you may get the idea). If indeed the
following lineup is what you have, NO amount of matching accomplished by the
internal KAT2 will result in a change in the reading on the WM-2. If the
antenna presents a high SWR, the WM-2 will show a high SWR even though the
internal KAT2 will have matched to it!

K2 & KAT2 (that is all inside the K2 - now we are going outside the K2) =>
Coax => WM-2 => Antenna

The real question is in the lineup shown above what does the K2 with the
KAT2 show for the resulting SWR?

Now - with the 817 here is what you likely have:

817 => coax => WM-2 => coax => T1 => antenna

Since the WM-2 is now BETWEEN the rig output and matching unit (in this case
the T1) it WILL show the results of the match obtained.

Just another thought on the procedure you described:

Once you switch to the correct ANT, you don't "double" push the button,
(that will switch back to the opposite antenna connection that is probably
not connected to anything!) - you just push it in and hold it for a second
or two.

You may be inadvertently switching to an unused ANT position before you are
holding the button in for the antenna matcher to tune.

Have fun es gud dxing -- Don N4HH

----- Original Message -----
From: "nr5a" <[hidden email]>
To: <[hidden email]>
Sent: Thursday, December 01, 2005 10:17 PM
Subject: [Elecraft] KAT 2

> Ok, yes, I'm stupid, no I can't follow directions or understand them, I
> need them on pre-school level I guess. I had my A ver, K2 brought up to a
> B version, just got the K2 back today with all the upgrades. 160m module,
> KNB 2, and KAT 2 amoung the other stuff.
>
> I'm sitting here, I hit the Menu button. Next I rotate the main tuning
> knob to ATU AUTO just like the instructions say.
>
> A fast push on the Menu button again returns the K2 to freq readout as it
> should be. 7040
>
> I've got the power output knob set to the 2nd dot turning it clockwise
> wattmeter on K2 says 2.5watts.
>
> I tap the ANT 1/2 button and I can see it go from ANT 2 to ANT 1, I assume
> its on ANT 1 because no lil down arrows are on ANT 2.
>
> Next I hit the ANT 1/2 button and hold it in a few seconds, I hear the
> rattling of relays. I watch the WM-2 wattmeter I always keep inline. The
> rattling stops, the cw tone stops, and the SWR is pegged, both in Ref and
> Fwr positions. What am I doing wrong???
>
> I have the directions open to page 18 and am following the Basic ATU
> Operation (auto mode) step by step, or so I thought, What am I not doing?
> I'm trying to tune back on 7040 and only hear static. There is a big
> difference between Ant 1 and Ant 2 in noise level. Ant 1 is where the
> noise is but no signals coming thru.
>
> Its not my antenna, a hour ago using my FT-817 thru a T-1 tuner I was
> tuned up on 40m. I used the K2 thru the T-1 before the conversion, and it
> worked great. The antenna is a 22ft vert gnd mounted with 14 radials.
>
> So can anyone see what I'm doing wrong?? And explain it to me so I can
> understand it, remember your talking to a very frustrated stupid person.
>
> Jerry - NR5A - South Dakota

NR5A

Re: KAT 2 -- Problem solved

In reply to this post by NR5A

Thanks for to those who helped. I'm on some meds that are really nasty, and
have some bad side affects, sometimes they get to me espicially when I get
frustrated like last nite. Warning don't take steroids, my doctor put me on
them because of leg ulcers and they backfired. I'm getting over a near
kidney failure because of them, thats not the point don't know how I got off
on it, aw the good news my legs are healing really fast.

Anyway after I got up today and got in the shack this afternoon, I got to
thinking what I had done. Everyone is right, you should not put a external
wattmeter on a rig like a K2 that has the auto antenna tuner built in, of
course your not going to get correct reading on the ext wattmeter. It hit me
like a brickwall when I realized what I did. Short story, the K2 tuner tunes
the bands I operate just fine with very low SWRs. Actually the swr are quite
close to what the WM-2 reads, some cases lower. This is going to take some
gettting use to for me tho, I've operated for over 5 years with the WM-2 or
a WM-1 inline, just don't seem right hooking nothing but the antenna to the
rig and operating. hi hi I'm having a hard time trusting the wattmeter built
in the K2 but I know its on the money. Hi Hi HI

My problem now is getting the keyer to work but I can figure that one out.

Want to thank the wonderful people on this reflector, I've learned alot from
it which prooves you can teach a old dog new tricks even if he is on drugs,
and believe me I'd rather not be! ! !! ! !

Cheers

Jerry - NR5A - South Dakota
----- Original Message -----
From: "nr5a" <[hidden email]>
To: <[hidden email]>
Sent: Thursday, December 01, 2005 8:17 PM
Subject: [Elecraft] KAT 2