[Elecraft] KXAT2 problem

[VE2PID]

Hi to all .. I have a problem with my KX2 which appeared today. When I 
press ATU to start a tuning sequence, I hear the familiar relays noise 
of the KXAT2. the 3 W power level is indicated, but it seems that no 
power is getting out to the antenna or dummy load. After 2 or 3 seconds, 
the sequence stops and a 25:1 SWR is indicated ... ...


Any suggestion?

Thanks de Pierre VE2PID KX2 s/n 1464

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Re: [Elecraft] KXAT2

[VE2PID]

... I forgot to say that I can transmit and make QSOs with the rig even 
with these high SWR so the power is getting to the antenna. The problem 
(no power out) is present only during the tuning sequences.


...

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Re: [Elecraft] KXAT2 problem

[Lyle Johnson]

This often indicates the connection between the ATU and the BNC has opened.

73,

Lyle KK7P

Sent from my iPhone

> On May 5, 2018, at 5:52 PM, VE2PID  wrote:
> 
> Hi to all .. I have a problem with my KX2 which appeared today. When I press 
> ATU to start a tuning sequence, I hear the familiar relays noise of the 
> KXAT2. the 3 W power level is indicated, but it seems that no power is 
> getting out to the antenna or dummy load. After 2 or 3 seconds, the sequence 
> stops and a 25:1 SWR is indicated ... ...
> 
> Any suggestion?
> 
> Thanks de Pierre VE2PID KX2 s/n 1464
> 
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Re: [Elecraft] KXAT2 problem

[Chris]

I had a similar problem. This thread may help:

http://elecraft.365791.n2.nabble.com/KX2-quot-HI-CUR-quot-Warning-td7639589.html

--Chris (KD2FLH)


On May 5, 2018 8:52:34 PM EDT, VE2PID  wrote:
>Hi to all .. I have a problem with my KX2 which appeared today. When I 
>press ATU to start a tuning sequence, I hear the familiar relays noise 
>of the KXAT2. the 3 W power level is indicated, but it seems that no 
>power is getting out to the antenna or dummy load. After 2 or 3
>seconds, 
>the sequence stops and a 25:1 SWR is indicated ... ...
>
>Any suggestion?
>
>Thanks de Pierre VE2PID KX2 s/n 1464
>
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Re: [Elecraft] KXAT2 problem

[rich hurd WC3T]

Ooh, I'm immortalized in a Nabble archive.  Preen, preen.  :)

On Sat, May 5, 2018 at 21:13 Chris  wrote:

> I had a similar problem. This thread may help:
>
>
> http://elecraft.365791.n2.nabble.com/KX2-quot-HI-CUR-quot-Warning-td7639589.html
>
> --Chris (KD2FLH)
>
>
> On May 5, 2018 8:52:34 PM EDT, VE2PID  wrote:
> >Hi to all .. I have a problem with my KX2 which appeared today. When I
> >press ATU to start a tuning sequence, I hear the familiar relays noise
> >of the KXAT2. the 3 W power level is indicated, but it seems that no
> >power is getting out to the antenna or dummy load. After 2 or 3
> >seconds,
> >the sequence stops and a 25:1 SWR is indicated ... ...
> >
> >Any suggestion?
> >
> >Thanks de Pierre VE2PID KX2 s/n 1464
> >
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-- 
72,
Rich Hurd / WC3T / DMR: 3142737
PA Army MARS, Northampton County RACES, EPA-ARRL Public Information Officer
for Scouting
Latitude: 40.761621 Longitude: -75.288988  (40°45.68' N 75°17.33' W) Grid:
*FN20is*
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[Elecraft] KXAT2 Memory Failure/Malfunction?

[Joseph Shuman via Elecraft]

Have owned KX2 #3007 for a little over a year.  I recently had to replace my 
at-home antenna because of weather (wind) damage.   I initially tuned the new 
antenna every 20 kHz through the 80/40/20m bands, and had no issues with 
matching on frequencies between tune points on first use (1.0-1.3 SWR)  Since 
then, the ATU needs to be re-tuned each use as the SWR on power-up is usually 
25 or greater on the last used frequency.  Note that the antenna is 
disconnected when not in use.  Any ideas?

Keeping Watch-
shu

Joe Shuman, KE8KJZ
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[Elecraft] KXAT2 ATU MD Menu

[VE2PID]

Hi ... In the KXAT2 menu, there is an option to check relays:  In ATU MD 
Modes L1-L7, C1-C7 and Ct are used to test the KXAT2's relays and 
L-network. However, I dont see any detailed infos of how to use it and 
what results should be expected ??


Any information would be welcome.

Thanks de Pierre VE2PID

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[Elecraft] KXAT2 vs. KXAT3 vs. T1

[Julia Tuttle]

Hi folks,

I was looking at Elecraft's antenna tuners, and I'm a little confused at
their specs.

The T1 and KXAT2 are listed as having 7L7C networks, while the KX3 is
listed as having an 8L8C network, but all three are listed as being able to
match up to a 10:1 SWR.

Why doesn't the KXAT3 have a wider matching range from the extra inductor
and capacitor?

Is the 10:1 spec conservative and in reality all three can exceed it but
the KXAT3 will outperform the other two? Do the eighth inductor and
capacitor on the KXAT3 provide *closer* matches instead of a *wider*
matching range?

Thanks and 73,

Julie
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[Elecraft] KXAT2: Recommended Random Wire Lengths

[murphy]

I love my new KX2 and the installed auto-tuner.  The manual mentions a
random wire antenna with a counterpoise and recommends #26 “Silky” from
The Wireman (catalog #534).  After obtaining 100 feet the first question
is how long?  Obviously I want it to tune 1:1 SWR, 80 to 10 meters but a
quick search of the archives and manual came up dry for specific random
wire lengths.  So I cut 29 feet x 2 and boom - no joy.  The 5MHz band
got no better than 4:1 SWR and 80 meters was, well, hopeless.  The rest
was good.  Ok searching the net the best I could find was
http://www.hamuniverse.com/randomwireantennalengths.html with the magic
number lengths: *29  35.5  41  58  71  84  107  119  148  203  347  407 
423*.  Still, no guarantee which would meet requirements on the
KX2/KXAT2.  So, after a splice and another cut, I can now officially
announce that a 58 foot "random" wire with a 29 foot counterpoise will
give a 1:1 SWR on all bands 80-10 on the KX2 using the KXAT2. :-)

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[Elecraft] KXAT2: Recommended Random Wire Lengths

[Brian “VE3BWP” Pietrzyk]

Hi Murphy, your post comes at a good time for me. Thanks for this info. I'm 
preparing to take my new KX3 to the Dominican Republic next month for a QRP 
deployment on the beach at a resort. I'm planning to do WSPR, JT65, PSK31 and 
PHONE. I've not kept up my CW so I'm hoping to try some fldigi assisted CW 
contacts although it doesn't seem to copy human sent code very well so we'll 
see how that goes. 

I've tried a couple of other (Phone only) Caribbean QRP deployments when I had 
my FT817 and ATAS 25. 3 years ago in Panama it was winter field day and 10m was 
open so I created a pileup. It was a blast and I was bitten by the bug! (If you 
search ve3bwp QRP Costa Rica on YouTube you can see a few of the reactions I 
got - intrigued, the hotel staff kept the Marquita's flowing so I may sound a 
bit tipsy). 

Then last year I tried It from Panama. Didn't_make_a_single_contact! Heard lots 
but no-one heard me. I realized how ill prepared I was and relying on a 
compromise antenna near a solar minimum (with no CW or digimodes) would be even 
that close to the equator. 

So this year with a new KX3 and my wife's super thin MacBook life I'm going 
getting serious and I have a proper antenna! I've started reading through the 
Elecraft message archives trying to find all random wire success stories. I got 
some of the Wireman silky wire and now in search of what lengths to try. I saw 
Wayne's recommendation for 25ft for 40-6m so I've cut some for that. I'm 
looking to precut a few different lengths to try for various band combinations. 
Maybe even some band specific resonant ones for 20 to 10m so if anyone has some 
tried and true lengths for those I would appreciate hearing about actual 
lengths. This will be my first time with end feds or random wires. I'm also 
giving serious thought to packing my CrankIR as it can be made resonant very 
easily but it's 13.5lbs and would be the heaviest and bulkiest item of all. I 
may take it though just in case since it is comparable in performance to my 
base dipole. With it I've had regular phone ragchews at 5w with 
 many assuming I was running way more power. 

Anyway if others have has similar ambitions/successes... would love to hear 
about it. 

Thanks and regards,

Brian ve3bwp

> Message: 19
> Date: Sat, 28 Jan 2017 16:30:57 -0500
> From: murphy 
> To: elecraft@mailman.qth.net
> Subject: [Elecraft] KXAT2: Recommended Random Wire Lengths
> Message-ID: 
> Content-Type: text/plain; charset=utf-8
> 
> I love my new KX2 and the installed auto-tuner.  The manual mentions a
> random wire antenna with a counterpoise and recommends #26 ?Silky? from
> The Wireman (catalog #534).  After obtaining 100 feet the first question
> is how long?  Obviously I want it to tune 1:1 SWR, 80 to 10 meters but a
> quick search of the archives and manual came up dry for specific random
> wire lengths.  So I cut 29 feet x 2 and boom - no joy.  The 5MHz band
> got no better than 4:1 SWR and 80 meters was, well, hopeless.  The rest
> was good.  Ok searching the net the best I could find was
> http://www.hamuniverse.com/randomwireantennalengths.html with the magic
> number lengths: *29  35.5  41  58  71  84  107  119  148  203  347  407 
> 423*.  Still, no guarantee which would meet requirements on the
> KX2/KXAT2.  So, after a splice and another cut, I can now officially
> announce that a 58 foot "random" wire with a 29 foot counterpoise will
> give a 1:1 SWR on all bands 80-10 on the KX2 using the KXAT2. :-)
> 
> Message: 26
> Date: Sun, 29 Jan 2017 02:38:20 +0100
> From: "Emory Schley" 
> To: Elecraft 
> Subject: [Elecraft] Random wire lengths for antennas
> Message-ID:
>
> 
>
> Content-Type: text/plain; charset=UTF-8
> 
> My KX2 Owner's Manual, page 10, says "A length of about 25 feet for each 
> wire, matched to the KX2's output using an antenna tuner (see ATU, pg. 11) 
> will typically provide good performance on 40-10 m. (Without an ATU, resonant 
> lengths are required for each band.) This antenna is ideal for outings where 
> all gear must fit into a small bag (e.g., our model CS-40)."
> 
> I just bought my KX2 in late November/December 2016, so I presume this is the 
> latest edition of the Owner's Manual.
> ?
> Emory Schley
> N4LP
> 
> 
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Re: [Elecraft] KXAT2 ATU MD Menu

[Wayne Burdick]

Pierre,

You can test the inductors and capacitors using these menu entries. Here’s a 
general approach:

1. Connect a dummy load to the antenna jack.

2. Set the KX2 for 40 meters, about 3 watts. 

3. With the ATU in BYP (bypass) mode, a TUNE should report SWR of 1.0.

4. Selecting ATU MD = L5, L6, L7 or C5, C6, C7 should make the SWR go up 
(larger the reactance, the greater the SWR change).

5. L1-L4 and C1-C4 can be tested in the same way, but you’ll need to use a 
higher band, such as 17 meters, to clearly see the impact of these smaller 
reactances.

6. I believe that the Ct test position also throws in a capacitor and possibly 
an inductor to see the effect of switching the network from C-in to C-out. This 
is likely to be observed best on a higher band.

73,
Wayne
N6KR

  


> On May 9, 2018, at 6:23 AM, VE2PID  wrote:
> 
> Hi ... In the KXAT2 menu, there is an option to check relays:  In ATU MD 
> Modes L1-L7, C1-C7 and Ct are used to test the KXAT2's relays and L-network. 
> However, I dont see any detailed infos of how to use it and what results 
> should be expected ??
> 
> Any information would be welcome.
> 
> Thanks de Pierre VE2PID
> 
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Re: [Elecraft] KXAT2 vs. KXAT3 vs. T1

[Walter Underwood]

The KX3 has extra range so that it covers 160 m and 6 m compared to the KX2, 
which is 80 to 10 m. The T1 is spec’ed to cover 160 to 6 m, so I’m not sure 
about the details of that.

The KX3 might have a wider matching range on just the HF bands. I’ve only had 
it fail to match once.

A few years ago, there was a discussion on this list that gave all the 
component values for all the ATUs. I’m not having any luck finding those posts 
right now.

wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/  (my blog)

> On Oct 25, 2022, at 9:51 AM, Julia Tuttle  > wrote:
> 
> Hi folks,
> 
> I was looking at Elecraft's antenna tuners, and I'm a little confused at
> their specs.
> 
> The T1 and KXAT2 are listed as having 7L7C networks, while the KX3 is
> listed as having an 8L8C network, but all three are listed as being able to
> match up to a 10:1 SWR.
> 
> Why doesn't the KXAT3 have a wider matching range from the extra inductor
> and capacitor?
> 
> Is the 10:1 spec conservative and in reality all three can exceed it but
> the KXAT3 will outperform the other two? Do the eighth inductor and
> capacitor on the KXAT3 provide *closer* matches instead of a *wider*
> matching range?
> 
> Thanks and 73,
> 
> Julie
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Re: [Elecraft] KXAT2 vs. KXAT3 vs. T1

[Brian Hunt]

I believe the schematics, which are downloadable, will show the component 
values. I’ve never tabulated them though. 

Brian, K0DTJ 

> On Oct 25, 2022, at 10:16, Walter Underwood  wrote:
> 
> The KX3 has extra range so that it covers 160 m and 6 m compared to the KX2, 
> which is 80 to 10 m. The T1 is spec’ed to cover 160 to 6 m, so I’m not sure 
> about the details of that.
> 
> The KX3 might have a wider matching range on just the HF bands. I’ve only had 
> it fail to match once.
> 
> A few years ago, there was a discussion on this list that gave all the 
> component values for all the ATUs. I’m not having any luck finding those 
> posts right now.
> 
> wunder
> K6WRU
> Walter Underwood
> CM87wj
> http://observer.wunderwood.org/  (my blog)
> 
>> On Oct 25, 2022, at 9:51 AM, Julia Tuttle > > wrote:
>> 
>> Hi folks,
>> 
>> I was looking at Elecraft's antenna tuners, and I'm a little confused at
>> their specs.
>> 
>> The T1 and KXAT2 are listed as having 7L7C networks, while the KX3 is
>> listed as having an 8L8C network, but all three are listed as being able to
>> match up to a 10:1 SWR.
>> 
>> Why doesn't the KXAT3 have a wider matching range from the extra inductor
>> and capacitor?
>> 
>> Is the 10:1 spec conservative and in reality all three can exceed it but
>> the KXAT3 will outperform the other two? Do the eighth inductor and
>> capacitor on the KXAT3 provide *closer* matches instead of a *wider*
>> matching range?
>> 
>> Thanks and 73,
>> 
>> Julie
>> __
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> 
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Re: [Elecraft] KXAT2 vs. KXAT3 vs. T1

[Brian Hunt]

(edited message follows)

> On Oct 25, 2022, at 13:05, Brian Hunt  wrote:
> 
> I believe the schematics, which are downloadable, will show the component 
> values. They are typically a binary progression. I’ve never tabulated them 
> though. 
> 
> Brian, K0DTJ 
> 
>> On Oct 25, 2022, at 10:16, Walter Underwood  wrote:
>> 
>> The KX3 has extra range so that it covers 160 m and 6 m compared to the 
>> KX2, which is 80 to 10 m. The T1 is spec’ed to cover 160 to 6 m, so I’m not 
>> sure about the details of that.
>> 
>> The KX3 might have a wider matching range on just the HF bands. I’ve only 
>> had it fail to match once.
>> 
>> A few years ago, there was a discussion on this list that gave all the 
>> component values for all the ATUs. I’m not having any luck finding those 
>> posts right now.
>> 
>> wunder
>> K6WRU
>> Walter Underwood
>> CM87wj
>> http://observer.wunderwood.org/  (my blog)
>> 
 On Oct 25, 2022, at 9:51 AM, Julia Tuttle >>> > wrote:
>>> 
>>> Hi folks,
>>> 
>>> I was looking at Elecraft's antenna tuners, and I'm a little confused at
>>> their specs.
>>> 
>>> The T1 and KXAT2 are listed as having 7L7C networks, while the KX3 is
>>> listed as having an 8L8C network, but all three are listed as being able to
>>> match up to a 10:1 SWR.
>>> 
>>> Why doesn't the KXAT3 have a wider matching range from the extra inductor
>>> and capacitor?
>>> 
>>> Is the 10:1 spec conservative and in reality all three can exceed it but
>>> the KXAT3 will outperform the other two? Do the eighth inductor and
>>> capacitor on the KXAT3 provide *closer* matches instead of a *wider*
>>> matching range?
>>> 
>>> Thanks and 73,
>>> 
>>> Julie
>>> __
>>> Elecraft mailing list
>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft 
>>> 
>>> Help: http://mailman.qth.net/mmfaq.htm 
>>> Post: mailto:Elecraft@mailman.qth.net 
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>>> Please help support this email list: http://www.qsl.net/donate.html 
>>> 
>>> Message delivered to wun...@wunderwood.org  
>> 
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> 

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Re: [Elecraft] KXAT2: Recommended Random Wire Lengths

[James Bennett]

Hi Brian,

I’ve also got a KX3 and use it in the summer on the back patio and occasionally 
from the family room when it is not sitting on my shack desk, tethered to the 
KXPA100. When I do those “portable” operations I use an end-fed vertical that I 
came across at the web site of EARC - the Emergency Amateur Radio Club in 
Honolulu. URL below. Very simple antenna - is uses a 30 or so length of wire 
strung vertically and a 9:1 un-un. I homebrewed the un-un - piece of cake.

While it isn’t the same as a super long wire antenna up 80 feet, it does pretty 
darn well. In fact, I will be taking my KX3 (barefoot) and this antenna on a 
three week vacation this spring to the southern Philippines - Mindanao. No (or 
very little) SSB, but primarily CW and possibly digital modes.

Easy to build or cheap to buy, lightweight to transport, and performs very 
well...

Here is the address of the EARC: 

http://www.earchi.org/92011endfedfiles/Endfed6_40.pdf

Jim Bennett / W6JHB
Folsom, CA






> On Jan 29, 2017, at 9:12 AM, Brian “VE3BWP” Pietrzyk  wrote:
> 
> Hi Murphy, your post comes at a good time for me. Thanks for this info. I'm 
> preparing to take my new KX3 to the Dominican Republic next month for a QRP 
> deployment on the beach at a resort. I'm planning to do WSPR, JT65, PSK31 and 
> PHONE. I've not kept up my CW so I'm hoping to try some fldigi assisted CW 
> contacts although it doesn't seem to copy human sent code very well so we'll 
> see how that goes. 
> 
> I've tried a couple of other (Phone only) Caribbean QRP deployments when I 
> had my FT817 and ATAS 25. 3 years ago in Panama it was winter field day and 
> 10m was open so I created a pileup. It was a blast and I was bitten by the 
> bug! (If you search ve3bwp QRP Costa Rica on YouTube you can see a few of the 
> reactions I got - intrigued, the hotel staff kept the Marquita's flowing so I 
> may sound a bit tipsy). 
> 
> Then last year I tried It from Panama. Didn't_make_a_single_contact! Heard 
> lots but no-one heard me. I realized how ill prepared I was and relying on a 
> compromise antenna near a solar minimum (with no CW or digimodes) would be 
> even that close to the equator. 
> 
> So this year with a new KX3 and my wife's super thin MacBook life I'm going 
> getting serious and I have a proper antenna! I've started reading through the 
> Elecraft message archives trying to find all random wire success stories. I 
> got some of the Wireman silky wire and now in search of what lengths to try. 
> I saw Wayne's recommendation for 25ft for 40-6m so I've cut some for that. 
> I'm looking to precut a few different lengths to try for various band 
> combinations. Maybe even some band specific resonant ones for 20 to 10m so if 
> anyone has some tried and true lengths for those I would appreciate hearing 
> about actual lengths. This will be my first time with end feds or random 
> wires. I'm also giving serious thought to packing my CrankIR as it can be 
> made resonant very easily but it's 13.5lbs and would be the heaviest and 
> bulkiest item of all. I may take it though just in case since it is 
> comparable in performance to my base dipole. With it I've had regular phone 
> ragchews at 5w with 
> many assuming I was running way more power. 
> 
> Anyway if others have has similar ambitions/successes... would love to hear 
> about it. 
> 
> Thanks and regards,
> 
> Brian ve3bwp
> 
>> Message: 19
>> Date: Sat, 28 Jan 2017 16:30:57 -0500
>> From: murphy 
>> To: elecraft@mailman.qth.net
>> Subject: [Elecraft] KXAT2: Recommended Random Wire Lengths
>> Message-ID: 
>> Content-Type: text/plain; charset=utf-8
>> 
>> I love my new KX2 and the installed auto-tuner.  The manual mentions a
>> random wire antenna with a counterpoise and recommends #26 ?Silky? from
>> The Wireman (catalog #534).  After obtaining 100 feet the first question
>> is how long?  Obviously I want it to tune 1:1 SWR, 80 to 10 meters but a
>> quick search of the archives and manual came up dry for specific random
>> wire lengths.  So I cut 29 feet x 2 and boom - no joy.  The 5MHz band
>> got no better than 4:1 SWR and 80 meters was, well, hopeless.  The rest
>> was good.  Ok searching the net the best I could find was
>> http://www.hamuniverse.com/randomwireantennalengths.html with the magic
>> number lengths: *29  35.5  41  58  71  84  107  119  148  203  347  407 
>> 423*.  Still, no guarantee which would meet requirements on the
>> KX2/KXAT2.  So, after a splice and another cut, I can now officially
>> announce that a 58 foot "random" wire with a 29 foot counterpoise will
>> give a 1:1 SWR on all bands 80-10 on the K

Re: [Elecraft] KXAT2: Recommended Random Wire Lengths

[Brian ve3bwp Pietrzyk]

r 
>> 20 to 10m so if anyone has some tried and true lengths for those I would 
>> appreciate hearing about actual lengths. This will be my first time with end 
>> feds or random wires. I'm also giving serious thought to packing my CrankIR 
>> as it can be made resonant very easily but it's 13.5lbs and would be the 
>> heaviest and bulkiest item of all. I may take it though just in case since 
>> it is comparable in performance to my base dipole. With it I've had regular 
>> phone ragchews at 5w with 
>> many assuming I was running way more power. 
>> 
>> Anyway if others have has similar ambitions/successes... would love to hear 
>> about it. 
>> 
>> Thanks and regards,
>> 
>> Brian ve3bwp
>> 
>>> Message: 19
>>> Date: Sat, 28 Jan 2017 16:30:57 -0500
>>> From: murphy mailto:mac3...@gmail.com>>
>>> To: elecraft@mailman.qth.net <mailto:elecraft@mailman.qth.net>
>>> Subject: [Elecraft] KXAT2: Recommended Random Wire Lengths
>>> Message-ID: >> <mailto:cb8ba97a-f144-d077-e73f-935230939...@gmail.com>>
>>> Content-Type: text/plain; charset=utf-8
>>> 
>>> I love my new KX2 and the installed auto-tuner.  The manual mentions a
>>> random wire antenna with a counterpoise and recommends #26 ?Silky? from
>>> The Wireman (catalog #534).  After obtaining 100 feet the first question
>>> is how long?  Obviously I want it to tune 1:1 SWR, 80 to 10 meters but a
>>> quick search of the archives and manual came up dry for specific random
>>> wire lengths.  So I cut 29 feet x 2 and boom - no joy.  The 5MHz band
>>> got no better than 4:1 SWR and 80 meters was, well, hopeless.  The rest
>>> was good.  Ok searching the net the best I could find was
>>> http://www.hamuniverse.com/randomwireantennalengths.html 
>>> <http://www.hamuniverse.com/randomwireantennalengths.html> with the magic
>>> number lengths: *29  35.5  41  58  71  84  107  119  148  203  347  407 
>>> 423*.  Still, no guarantee which would meet requirements on the
>>> KX2/KXAT2.  So, after a splice and another cut, I can now officially
>>> announce that a 58 foot "random" wire with a 29 foot counterpoise will
>>> give a 1:1 SWR on all bands 80-10 on the KX2 using the KXAT2. :-)
>>> 
>>> Message: 26
>>> Date: Sun, 29 Jan 2017 02:38:20 +0100
>>> From: "Emory Schley" mailto:silverlo...@gmx.com>>
>>> To: Elecraft mailto:Elecraft@mailman.qth.net>>
>>> Subject: [Elecraft] Random wire lengths for antennas
>>> Message-ID:
>>>   
>>> 
>>> 
>>> Content-Type: text/plain; charset=UTF-8
>>> 
>>> My KX2 Owner's Manual, page 10, says "A length of about 25 feet for each 
>>> wire, matched to the KX2's output using an antenna tuner (see ATU, pg. 11) 
>>> will typically provide good performance on 40-10 m. (Without an ATU, 
>>> resonant lengths are required for each band.) This antenna is ideal for 
>>> outings where all gear must fit into a small bag (e.g., our model CS-40)."
>>> 
>>> I just bought my KX2 in late November/December 2016, so I presume this is 
>>> the latest edition of the Owner's Manual.
>>> ?
>>> Emory Schley
>>> N4L
>>> 
>>> 

__
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Re: [Elecraft] KXAT2: Recommended Random Wire Lengths

[James Bennett]

ribbean QRP deployments when I 
>>> had my FT817 and ATAS 25. 3 years ago in Panama it was winter field day and 
>>> 10m was open so I created a pileup. It was a blast and I was bitten by the 
>>> bug! (If you search ve3bwp QRP Costa Rica on YouTube you can see a few of 
>>> the reactions I got - intrigued, the hotel staff kept the Marquita's 
>>> flowing so I may sound a bit tipsy). 
>>> 
>>> Then last year I tried It from Panama. Didn't_make_a_single_contact! Heard 
>>> lots but no-one heard me. I realized how ill prepared I was and relying on 
>>> a compromise antenna near a solar minimum (with no CW or digimodes) would 
>>> be even that close to the equator. 
>>> 
>>> So this year with a new KX3 and my wife's super thin MacBook life I'm going 
>>> getting serious and I have a proper antenna! I've started reading through 
>>> the Elecraft message archives trying to find all random wire success 
>>> stories. I got some of the Wireman silky wire and now in search of what 
>>> lengths to try. I saw Wayne's recommendation for 25ft for 40-6m so I've cut 
>>> some for that. I'm looking to precut a few different lengths to try for 
>>> various band combinations. Maybe even some band specific resonant ones for 
>>> 20 to 10m so if anyone has some tried and true lengths for those I would 
>>> appreciate hearing about actual lengths. This will be my first time with 
>>> end feds or random wires. I'm also giving serious thought to packing my 
>>> CrankIR as it can be made resonant very easily but it's 13.5lbs and would 
>>> be the heaviest and bulkiest item of all. I may take it though just in case 
>>> since it is comparable in performance to my base dipole. With it I've had 
>>> regular phone ragchews at 5w with 
>>> many assuming I was running way more power. 
>>> 
>>> Anyway if others have has similar ambitions/successes... would love to hear 
>>> about it. 
>>> 
>>> Thanks and regards,
>>> 
>>> Brian ve3bwp
>>> 
>>>> Message: 19
>>>> Date: Sat, 28 Jan 2017 16:30:57 -0500
>>>> From: murphy mailto:mac3...@gmail.com>>
>>>> To: elecraft@mailman.qth.net <mailto:elecraft@mailman.qth.net>
>>>> Subject: [Elecraft] KXAT2: Recommended Random Wire Lengths
>>>> Message-ID: >>> <mailto:cb8ba97a-f144-d077-e73f-935230939...@gmail.com>>
>>>> Content-Type: text/plain; charset=utf-8
>>>> 
>>>> I love my new KX2 and the installed auto-tuner.  The manual mentions a
>>>> random wire antenna with a counterpoise and recommends #26 ?Silky? from
>>>> The Wireman (catalog #534).  After obtaining 100 feet the first question
>>>> is how long?  Obviously I want it to tune 1:1 SWR, 80 to 10 meters but a
>>>> quick search of the archives and manual came up dry for specific random
>>>> wire lengths.  So I cut 29 feet x 2 and boom - no joy.  The 5MHz band
>>>> got no better than 4:1 SWR and 80 meters was, well, hopeless.  The rest
>>>> was good.  Ok searching the net the best I could find was
>>>> http://www.hamuniverse.com/randomwireantennalengths.html 
>>>> <http://www.hamuniverse.com/randomwireantennalengths.html> with the magic
>>>> number lengths: *29  35.5  41  58  71  84  107  119  148  203  347  407 
>>>> 423*.  Still, no guarantee which would meet requirements on the
>>>> KX2/KXAT2.  So, after a splice and another cut, I can now officially
>>>> announce that a 58 foot "random" wire with a 29 foot counterpoise will
>>>> give a 1:1 SWR on all bands 80-10 on the KX2 using the KXAT2. :-)
>>>> 
>>>> Message: 26
>>>> Date: Sun, 29 Jan 2017 02:38:20 +0100
>>>> From: "Emory Schley" mailto:silverlo...@gmx.com>>
>>>> To: Elecraft mailto:Elecraft@mailman.qth.net>>
>>>> Subject: [Elecraft] Random wire lengths for antennas
>>>> Message-ID:
>>>>   
>>>> 
>>>> 
>>>> Content-Type: text/plain; charset=UTF-8
>>>> 
>>>> My KX2 Owner's Manual, page 10, says "A length of about 25 feet for each 
>>>> wire, matched to the KX2's output using an antenna tuner (see ATU, pg. 11) 
>>>> will typically provide good performance on 40-10 m. (Without an ATU, 
>>>> resonant lengths are required for each band.) This antenna is ideal for 
>>>> outings where all gear must fit into a small bag (e.g., our model CS-40)."
>>>> 
>>>> I just bought my KX2 in late November/December 2016, so I presume this is 
>>>> the latest edition of the Owner's Manual.
>>>> ?
>>>> Emory Schley
>>>> N4L
>>>> 
>>>> 
> 

__
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[Elecraft] KXAT2 vs. Other Elecraft Transceiver ATUs

[Mike Morrow]

Bill wrote:

> As to the ATU in the KX2, 7L/7C is the same range as the KX1, T1 and
> I think the K2 ATU.

That is wildly inaccurate, especially for the KXAT1 ATU!!!

The reactance configuration for all Elecraft ATUs is an L-network of series 
inductance, with a capacitance connected to common before (radio side) or after 
(antenna side) the inductance (but not both) by a relay.  It is a classic 
simple low pass filter.

The total number of possible configurations in such a filter of L inductors and 
C capacitors, with the capacitor bank capable of being connected to either side 
of the series inductor, is:

Different Configurations = ( 2^L x 2^C x 2 )

Four (4) "don't care" (non-unique) configurations should be eliminated from 
total:
1.  Capacitor bank connected to inductor input, but all capacitors open.
2.  Capacitor bank connected to inductor output, but all capacitors open.
3.  Capacitor bank connected to inductor input, but all inductors shorted.
4.  Capacitor bank connected to inductor output, but all inductors shorted.

USEFUL Different Configurations = ( 2^L x 2^C x 2 ) - 4

For Elecraft transceiver ATUs before the new KXAT2, here are summaries (N is 
the network variable...capacitor connected to input OR output of inductor):

KAT1 (4L/5C/N) Configs=1020, L=0 to 4.9 uH (16 steps), C=0 to 300 pF (32 steps) 

KAT2 (8L/8C/N) Configs=131068, L=0 to 20.7 uH (256 steps), C=0 to 2420 pF (256 
steps) 

KAT3 (8L/8C/N) Configs=131068, L=0 to 17.4 uH (256 steps), C=0 to 2600 pF (256 
steps) 

KXAT1 (3L/3C/N) Configs=124, L=0 to 4.5 uH (8 steps), C=0 to 140 pF (8 steps) 

KXAT3 (8L/8C/N) Configs=131068, L=0 to 15.9 uH (256 steps), C=0 to 2680 pF (256 
steps) 

T1 (7L/7C/N) Configs=32764, L=0 to 7.5 uH (128 steps), C=0 to 1300 pF (128 
steps) 
 
Many already have the new KXAT2, but no circuit value information has yet been 
provided to those of the great unwashed masses like myself.  All I've seen is 
its description as 7L/7C/N, just like the T1.  If that is correct:

KXAT2 (7L/7C/N) Configs=32764, L=0 to ?.?? uH (128 steps), C=0 to  pF (128 
steps)

The KXAT1 generates 124 unique matching network configurations. 
The KAT1 generates 1020 unique matching network configurations. 
The KXAT2, T1 generate 32724 unique matching network configurations. 
The KAT2, KAT3, KXAT3 generate 131068 unique matching network configurations. 

Conclusion:  The KXAT2 is comparable ONLY to the T1.

73, 
Mike / KK5F 
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Re: [Elecraft] KXAT2 vs. Other Elecraft Transceiver ATUs

[Wayne Burdick]

Mike,

Your analysis of combinations is correct. But the KXAT2 should be compared to 
the KXAT3 (etc.), not the T1. Here's why: 

The KXAT2 only has to cover 80-10 meters. The KXAT3 has one additional L and C, 
but it has to cover 160-6 meters. Over the range of 80-10 meters, for virtually 
any field antenna, the KXAT2 will perform just as well.

The T1 also has to cover 160-6 meters. To do this with 7L/7C, the L and C 
values in its array are spread out with a ratio of slightly greater then 2:1 
from one to the next. This allows the array to cover a wider range of load 
impedances, but with an average final SWR more like 1.5:1 than 1:1.

The KXAT2, like the KXAT3, uses a ratio of very close to to 2:1, so average 
final SWR is very close to 1:1.

73,
Wayne
N6KR



On May 24, 2016, at 9:05 AM, Mike Morrow  wrote:

> Bill wrote:
> 
>> As to the ATU in the KX2, 7L/7C is the same range as the KX1, T1 and
>> I think the K2 ATU.
> 
> That is wildly inaccurate, especially for the KXAT1 ATU!!!
> 
> The reactance configuration for all Elecraft ATUs is an L-network of series 
> inductance, with a capacitance connected to common before (radio side) or 
> after (antenna side) the inductance (but not both) by a relay.  It is a 
> classic simple low pass filter.
> 
> The total number of possible configurations in such a filter of L inductors 
> and C capacitors, with the capacitor bank capable of being connected to 
> either side of the series inductor, is:
> 
> Different Configurations = ( 2^L x 2^C x 2 )
> 
> Four (4) "don't care" (non-unique) configurations should be eliminated from 
> total:
> 1.  Capacitor bank connected to inductor input, but all capacitors open.
> 2.  Capacitor bank connected to inductor output, but all capacitors open.
> 3.  Capacitor bank connected to inductor input, but all inductors shorted.
> 4.  Capacitor bank connected to inductor output, but all inductors shorted.
> 
> USEFUL Different Configurations = ( 2^L x 2^C x 2 ) - 4
> 
> For Elecraft transceiver ATUs before the new KXAT2, here are summaries (N is 
> the network variable...capacitor connected to input OR output of inductor):
> 
> KAT1 (4L/5C/N) Configs=1020, L=0 to 4.9 uH (16 steps), C=0 to 300 pF (32 
> steps) 
> 
> KAT2 (8L/8C/N) Configs=131068, L=0 to 20.7 uH (256 steps), C=0 to 2420 pF 
> (256 steps) 
> 
> KAT3 (8L/8C/N) Configs=131068, L=0 to 17.4 uH (256 steps), C=0 to 2600 pF 
> (256 steps) 
> 
> KXAT1 (3L/3C/N) Configs=124, L=0 to 4.5 uH (8 steps), C=0 to 140 pF (8 steps) 
> 
> KXAT3 (8L/8C/N) Configs=131068, L=0 to 15.9 uH (256 steps), C=0 to 2680 pF 
> (256 steps) 
> 
> T1 (7L/7C/N) Configs=32764, L=0 to 7.5 uH (128 steps), C=0 to 1300 pF (128 
> steps) 
> 
> Many already have the new KXAT2, but no circuit value information has yet 
> been provided to those of the great unwashed masses like myself.  All I've 
> seen is its description as 7L/7C/N, just like the T1.  If that is correct:
> 
> KXAT2 (7L/7C/N) Configs=32764, L=0 to ?.?? uH (128 steps), C=0 to  pF 
> (128 steps)
> 
> The KXAT1 generates 124 unique matching network configurations. 
> The KAT1 generates 1020 unique matching network configurations. 
> The KXAT2, T1 generate 32724 unique matching network configurations. 
> The KAT2, KAT3, KXAT3 generate 131068 unique matching network configurations. 
> 
> Conclusion:  The KXAT2 is comparable ONLY to the T1.
> 
> 73, 
> Mike / KK5F 
> __
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Re: [Elecraft] KXAT2 vs. Other Elecraft Transceiver ATUs

[Mike Morrow]

Thanks for your reply, Wayne.  I should have noted at least one of the 
important points you make in my conclusion about KXAT2 vs. T1, since the 
reduced required frequency span is pointed out in other KX2 materials.  I just 
did not want to get much more long-winded than I do naturally.

Thanks for making the KXAT2 instructions available at:

http://www.elecraft.com/manual/E740294%20KXAT2%20Installation%20Instructions%20Rev%20A.pdf

I wrote earlier:

> T1 (7L/7C/N) Configs=32764, L=0 to 7.5 uH (128 steps), C=0 to 1300 pF (128 
> steps)

> KXAT2 (7L/7C/N) Configs=32764, L=0 to ?.?? uH (128 steps), C=0 to  pF 
> (128 steps)

There is no KXAT2 schematic nor component values in its user instructions.  
Those would show the hard evidence of KXAT2 design variance with the T1.  
Obviously the ATU's total and incremental inductance or capacitance values 
spread through 128 steps of each in the KXAT2 will be smaller than those for 
the T1.

Will there be a system schematic similar to the KX3's available for download in 
the near future?  The beauty is not only in the unit itself, but also in what 
lies within that small case.

The size of the KX2 makes it just beg to be taken along on ALL wilderness day 
(or longer) hikes, without any exception.  All I'm waiting for is the initial 
mad mad sales rush to dissipate.  A fantastic achievement...thanks much!

73,
Mike / KK5F

-Original Message-
>From: Wayne Burdick 
>Sent: May 24, 2016 11:33 AM
>To: Mike Morrow 
>Cc: elecraft@mailman.qth.net
>Subject: Re: [Elecraft] KXAT2 vs. Other Elecraft Transceiver ATUs
>
> Mike,
>
> Your analysis of combinations is correct. But the KXAT2 should be compared to 
> the
> KXAT3 (etc.), not the T1. Here's why: 
>
> The KXAT2 only has to cover 80-10 meters. The KXAT3 has one additional L and 
> C, but
> it has to cover 160-6 meters. Over the range of 80-10 meters, for virtually 
> any field
> antenna, the KXAT2 will perform just as well.
>
> The T1 also has to cover 160-6 meters. To do this with 7L/7C, the L and C 
> values in
> its array are spread out with a ratio of slightly greater then 2:1 from one 
> to the
> next. This allows the array to cover a wider range of load impedances, but 
> with an
> average final SWR more like 1.5:1 than 1:1.
>
> The KXAT2, like the KXAT3, uses a ratio of very close to to 2:1, so average 
> final SWR
> is very close to 1:1.
>
> 73,
> Wayne
> N6KR
>
> On May 24, 2016, at 9:05 AM, Mike Morrow  wrote:
>
>> Bill wrote:
>> 
>>> As to the ATU in the KX2, 7L/7C is the same range as the KX1, T1 and
>>> I think the K2 ATU.
>> 
>> That is wildly inaccurate, especially for the KXAT1 ATU!!!
>> 
>> The reactance configuration for all Elecraft ATUs is an L-network of series 
>> inductance,
>> with a capacitance connected to common before (radio side) or after (antenna 
>> side) the
>> inductance (but not both) by a relay.  It is a classic simple low pass 
>> filter.
>> 
>> The total number of possible configurations in such a filter of L inductors 
>> and C
>> capacitors, with the capacitor bank capable of being connected to either 
>> side of
>> the series inductor, is:
>> 
>> Different Configurations = ( 2^L x 2^C x 2 )
>> 
>> Four (4) "don't care" (non-unique) configurations should be eliminated from 
>> total:
>> 1.  Capacitor bank connected to inductor input, but all capacitors open.
>> 2.  Capacitor bank connected to inductor output, but all capacitors open.
>> 3.  Capacitor bank connected to inductor input, but all inductors shorted.
>> 4.  Capacitor bank connected to inductor output, but all inductors shorted.
>> 
>> USEFUL Different Configurations = ( 2^L x 2^C x 2 ) - 4
>> 
>> For Elecraft transceiver ATUs before the new KXAT2, here are summaries (N is 
>> the
>> network variable...capacitor connected to input OR output of inductor):
>> 
>> KAT1 (4L/5C/N) Configs=1020, L=0 to 4.9 uH (16 steps), C=0 to 300 pF (32 
>> steps) 
>> 
>> KAT2 (8L/8C/N) Configs=131068, L=0 to 20.7 uH (256 steps), C=0 to 2420 pF 
>> (256 steps) 
>> 
>> KAT3 (8L/8C/N) Configs=131068, L=0 to 17.4 uH (256 steps), C=0 to 2600 pF 
>> (256 steps) 
>> 
>> KXAT1 (3L/3C/N) Configs=124, L=0 to 4.5 uH (8 steps), C=0 to 140 pF (8 
>> steps) 
>> 
>> KXAT3 (8L/8C/N) Configs=131068, L=0 to 15.9 uH (256 steps), C=0 to 2680 pF 
>> (256 steps) 
>> 
>> T1 (7L/7C/N) Configs=32764, L=0 to 7.5 uH (128 steps), C=0 to 1300 pF (128 
>> steps) 
>> 
>> Many already have the new KXAT2, but no circuit value information has yet 
>> been provided
>> to 

Re: [Elecraft] KXAT2 vs. Other Elecraft Transceiver ATUs

[Phil Wheeler]

Interesting analysis, Mike -- though relating the 
various *AT* acronyms to rigs is a bit mind 
bending :-)


But another point, an important one, is that the 
KX2 has fewer band (no 160 and no 6) compared to 
some of the other rigs, so needs an ATU with less 
L and C range. So it's capabilities for the bands 
it covers is likely just as good as that of, say, 
the KX3.


73, Phil W7OX

On 5/24/16 9:05 AM, Mike Morrow wrote:

Bill wrote:


As to the ATU in the KX2, 7L/7C is the same range as the KX1, T1 and
I think the K2 ATU.

That is wildly inaccurate, especially for the KXAT1 ATU!!!

The reactance configuration for all Elecraft ATUs is an L-network of series 
inductance, with a capacitance connected to common before (radio side) or after 
(antenna side) the inductance (but not both) by a relay.  It is a classic 
simple low pass filter.

The total number of possible configurations in such a filter of L inductors and 
C capacitors, with the capacitor bank capable of being connected to either side 
of the series inductor, is:

Different Configurations = ( 2^L x 2^C x 2 )

Four (4) "don't care" (non-unique) configurations should be eliminated from 
total:
1.  Capacitor bank connected to inductor input, but all capacitors open.
2.  Capacitor bank connected to inductor output, but all capacitors open.
3.  Capacitor bank connected to inductor input, but all inductors shorted.
4.  Capacitor bank connected to inductor output, but all inductors shorted.

USEFUL Different Configurations = ( 2^L x 2^C x 2 ) - 4

For Elecraft transceiver ATUs before the new KXAT2, here are summaries (N is 
the network variable...capacitor connected to input OR output of inductor):

KAT1 (4L/5C/N) Configs=1020, L=0 to 4.9 uH (16 steps), C=0 to 300 pF (32 steps)

KAT2 (8L/8C/N) Configs=131068, L=0 to 20.7 uH (256 steps), C=0 to 2420 pF (256 
steps)

KAT3 (8L/8C/N) Configs=131068, L=0 to 17.4 uH (256 steps), C=0 to 2600 pF (256 
steps)

KXAT1 (3L/3C/N) Configs=124, L=0 to 4.5 uH (8 steps), C=0 to 140 pF (8 steps)

KXAT3 (8L/8C/N) Configs=131068, L=0 to 15.9 uH (256 steps), C=0 to 2680 pF (256 
steps)

T1 (7L/7C/N) Configs=32764, L=0 to 7.5 uH (128 steps), C=0 to 1300 pF (128 
steps)
  
Many already have the new KXAT2, but no circuit value information has yet been provided to those of the great unwashed masses like myself.  All I've seen is its description as 7L/7C/N, just like the T1.  If that is correct:


KXAT2 (7L/7C/N) Configs=32764, L=0 to ?.?? uH (128 steps), C=0 to  pF (128 
steps)

The KXAT1 generates 124 unique matching network configurations.
The KAT1 generates 1020 unique matching network configurations.
The KXAT2, T1 generate 32724 unique matching network configurations.
The KAT2, KAT3, KXAT3 generate 131068 unique matching network configurations.

Conclusion:  The KXAT2 is comparable ONLY to the T1.

73,
Mike / KK5F


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Re: [Elecraft] KXAT2 vs. Other Elecraft Transceiver ATUs -> Nomenclature

[Mike Morrow]

Phil wrote:

> Interesting analysis, Mike -- though relating the various *AT* acronyms
> to rigs is a bit mind bending :-)

Don't I know it, Phil!  K1AT, K2AT, K3AT, KX1AT, KX2AT, KX3AT, etc. would be 
clearer and cleaner.  Then, there's KAT100, KAT500, KXAT100...perhaps K2AT100, 
K3AT500, KX3AT100 would be more obvious, or just K2AT1, K3AT5, KX3AT1.

This is only good-nature'd nitpicking...but after 17 years I still wonder why a 
simple consistent nomenclature system is not used. :-)

73,
Mike / KK5F
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Re: [Elecraft] KXAT2 vs. Other Elecraft Transceiver ATUs -> Nomenclature

[Guy Olinger K2AV]

It's their business, lock, stock and barrel. They could call their models
Grumpy, Snotty and Snort if they wanted to. Ain't no laws and nuthin in the
bible about it, except maybe can't name something with a cuss word or
something on the FCC banned word list. No IEEE standards. Just so long as
the copyright on the names ain't owned by someone else.

I'm just glad they came out with a technology leap beyond FT1000MP et al. I
sure have enjoyed the improvements. And they pushed Yakencom so hard they
all had to deal with it to compete so aficionados of other brands are
finally reaping the benefits of Elecraft progress.

I'm at least a bit of a curmudgeon, maybe more than a bit, and they treat
me nice anyway. So why should I complain about what combination they pull
out of the letter/number soup to name their babies?

SXG4 R2.3 Q

Twiddy 5

3 Slock 75

Names could be a LOT worse than KAT500.

Me thinks some people will complain no matter what Elecraft does. They hate
Elecraft so bad they can't stay off the Elecraft reflector.

73 Guy K2AV

On Tue, May 24, 2016 at 7:18 PM, Mike Morrow  wrote:

> Phil wrote:
>
> > Interesting analysis, Mike -- though relating the various *AT* acronyms
> > to rigs is a bit mind bending :-)
>
> Don't I know it, Phil!  K1AT, K2AT, K3AT, KX1AT, KX2AT, KX3AT, etc. would
> be clearer and cleaner.  Then, there's KAT100, KAT500, KXAT100...perhaps
> K2AT100, K3AT500, KX3AT100 would be more obvious, or just K2AT1, K3AT5,
> KX3AT1.
>
> This is only good-nature'd nitpicking...but after 17 years I still wonder
> why a simple consistent nomenclature system is not used. :-)
>
> 73,
> Mike / KK5F
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Re: [Elecraft] KXAT2 vs. Other Elecraft Transceiver ATUs -> Nomenclature

[Eric Swartz - WA6HHQ, Elecraft]

Guys - we are drifting way OT. Lets end this thread at this time.

73,

Eric
/elecraft.com/


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Re: [Elecraft] KXAT2 vs. Other Elecraft Transceiver ATUs -> Nomenclature

[Phil Wheeler]

I guess they'd have to avoid such as the names as 
those of the seven dwarfs -- and these days even 
"Grumpy, Snotty and Snort" might be problematic re 
copyrights and such.


Phil W7OX

On 5/24/16 5:23 PM, Guy Olinger K2AV wrote:

It's their business, lock, stock and barrel. They could call their models
Grumpy, Snotty and Snort if they wanted to. Ain't no laws and nuthin in the
bible about it, except maybe can't name something with a cuss word or
something on the FCC banned word list. No IEEE standards. Just so long as
the copyright on the names ain't owned by someone else.

I'm just glad they came out with a technology leap beyond FT1000MP et al. I
sure have enjoyed the improvements. And they pushed Yakencom so hard they
all had to deal with it to compete so aficionados of other brands are
finally reaping the benefits of Elecraft progress.

I'm at least a bit of a curmudgeon, maybe more than a bit, and they treat
me nice anyway. So why should I complain about what combination they pull
out of the letter/number soup to name their babies?

SXG4 R2.3 Q

Twiddy 5

3 Slock 75

Names could be a LOT worse than KAT500.

Me thinks some people will complain no matter what Elecraft does. They hate
Elecraft so bad they can't stay off the Elecraft reflector.

73 Guy K2AV

On Tue, May 24, 2016 at 7:18 PM, Mike Morrow  wrote:


Phil wrote:


Interesting analysis, Mike -- though relating the various *AT* acronyms
to rigs is a bit mind bending :-)

Don't I know it, Phil!  K1AT, K2AT, K3AT, KX1AT, KX2AT, KX3AT, etc. would
be clearer and cleaner.  Then, there's KAT100, KAT500, KXAT100...perhaps
K2AT100, K3AT500, KX3AT100 would be more obvious, or just K2AT1, K3AT5,
KX3AT1.

This is only good-nature'd nitpicking...but after 17 years I still wonder
why a simple consistent nomenclature system is not used. :-)

73,
Mike / KK5F


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