Re: [Elecraft] Why is my K3 off frequency?

[Charlie T]

Are y'all STILL grousing over this?

Haven't you figured out yet it was all a big "gotcha" joke poking fun at the
"frequency police"???
Let's all have a big laugh and get on with life.
This subject was DOA anyway.

73, Charlie k3ICH


 

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Re: [Elecraft] March/April NCJ

[Charlie T]

Same here.what a waste of electrons (-), or holes (+)  whichever your 
preference.
I was hoping for something useful, but it's obvious, Rob's list is the only one 
that has anything of consequence.

73, Charlie k3ICH


-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of David Gilbert
Sent: Saturday, March 13, 2021 12:38 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] March/April NCJ


I agree that a preponderance of 5 ratings are from people congratulating 
themselves on their choice, and the text often goes like "this is a fine rig" 
or "met all my expectations."

And out of roughly 2,200 eHam ratings I once profiled just for grins, almost 
all of the ratings of 1 star or 2 stars were for service or support issues ... 
which tells you nothing about the rig itself.

I also agree about the need to look for trends in the comments to find any 
worthwhile insight ... which is why the NCJ article that used only the summary 
average ratings is borderline useless to me.

73,
Dave  AB7E




On 3/13/2021 8:56 AM, Jim Rhodes wrote:
> When looking at eham reviews I really only read the ones that give a 
> rating of 4 or less. The total number of reviews only tell you how 
> many units are out there. The 5 ratings seem to mostly be people 
> patting themselves on the back about what a great product they bought and 
> give no useful information.
> I look at the ones by people who are not so satisfied, there is 
> usually more useful information there. Sure there are the folks that 
> give a 4 rating because "it only comes in black", but if you look for 
> trends you can often find trends.
>
> On Fri, Mar 12, 2021 at 5:40 PM Nate Bargmann  wrote:
>
>> My assessment of eham reviews over the years is that there are some 
>> hams who can break an anvil with a rubber mallet!
>>
>> 73, Nate, N0NB
>>
>> --
>>
>> "The optimist proclaims that we live in the best of all possible 
>> worlds.  The pessimist fears this is true."
>>
>> Web: https://www.n0nb.us
>> Projects: https://github.com/N0NB
>> GPG fingerprint: 82D6 4F6B 0E67 CD41 F689 BBA6 FB2C 5130 D55A 8819
>>
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Re: [Elecraft] Sudden KPA1500 power reduction

[Charlie T]

Just curious, does the big FLEX amp use the same two LDMOS devices?
2nd question, have they shipped any yet? (probably not the right place to ask)

73, Charlie k3ICH



-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Roy
Sent: Sunday, February 21, 2021 12:47 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] Sudden KPA1500 power reduction

Ditto here -- mine's at the factory.

73,  Roy,  K6XK

On 2/21/2021 11:32 AM, Frank Scolaro wrote:
> Happened to me several months ago...  one LDMOS out! same symptoms.  You need 
> the power with such great band conditions...
>
> GL
> Frank, W2YK
>
>
>

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Re: [Elecraft] Big Knob Fail

[Charlie T]

I fully agree.  I would NOT put a weighted knob on any electronic tuning
mechanism, unless of course it was designed for it.

Lots of Collins guys like to install those weighted tuning * knobs on their
S-Lines, which were NOT made to take excessive extra wear caused by the very
heavy knob.

73, Charlie k3ICH

* The "weighted" Collins knob actually has the outer skirt replaced with one
made of solid brass which is painted satin black to match the standard
Bakelite knobs.
It was never intended to be used on the regular 200 kHz tuning via pinch
roller, S-Line but was designed to smooth-out the klunky tuning in their
51S-1 receiver.
It does great for that.


-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Morgan Bailey
Sent: Wednesday, February 17, 2021 4:38 PM
To: Hank Garretson ; Elecraft@mailman.qth.net
Subject: Re: [Elecraft] Big Knob Fail

One of the problems with the knobs is that sometimes, people change the
injected molded knob out for a HEAVY machined knob. The mechanism inside the
radio is not built for this type of installation. A rapid spin with the
angular momentum and torque of the heavy knob will wear out the device.
This will require taking the front panel off and replacing the component.
This has been discussed many times in the past on this forum. It sounds like
his main frequency control device is worn out/damaged and will need
replacement. I would continue to call Elecraft until I get through to a
technician and most likely have it sent in and fixed.

I wish your friend well in getting his rig fixed. Withdrawal is a bummer.

73, Morgan NJ8M

On Wed, Feb 17, 2021 at 3:10 PM Hank Garretson  wrote:

> My buddy Kurt, W6PH, who is not on the list, has a K3S. Recently the 
> VFO knob has been intermittent and it is now total fail. Does not 
> change frequency. When he goes to CONFIG or MENU, VFO knob does not 
> change anything. All other knobs and buttons work including VFO B.
>
> Kurt called Elecraft support and was directed to voice mail.
>
> Any ideas?
>
> 73,
>
> Hank, W6SX
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Re: [Elecraft] K3 - Maximum CW speed from manual key

[Charlie T]

I remember working at Microlog Inc (The OLD one in Gaithersburg MD that made 
RTTY/CW video terminals) in the 80's. 
No rigs at the time would function efficiently with on/off keying at that 
speed, so we were experimenting with 300 WPM CW sent using the normal RTTY 
method of 170Hz shift FSK.
It worked like a charm and our CW reader would copy perfectly at that speed too.
Just about everyone in the company was a ham from the pres. on down, so we 
played around with it on 2 meter FM using AFSK tones into the mike jack until 
something new came along.
Other than just to see if it WOULD work, nothing more was ever done with it.

73, Charlie k3ICH




-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of David Gilbert
Sent: Saturday, February 06, 2021 1:04 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 - Maximum CW speed from manual key


I don't see that as being realistic.  Per the normal definition of a Morse 
"word" being the word "paris", 300 wpm means each dit would be no longer than 4 
msec.  As best I can recall, the rise and fall of the K3 keying waveform are 
each around 2.5 msec.  I'm not at all an expert, but I suspect most digital 
signal processing techniques would find that hard to differentiate.

73,
Dave   AB7E





On 2/6/2021 8:01 AM, Kurt Theis wrote:
> Greetings list!
>
> I searched the archives and other sources, but haven't found an 
> answer, so I'll try here.
> I'm looking to find the maximum cw speed on my K3 (with new 
> oscillators, serial 8xxx) when using a manual cw key plugged into the 
> KEY jack on the back of the radio.
>
> I don't mean the internal keyer, or memories. I'm not using QSK, so 
> that won't be an issue. The K3 is put into TX mode via an external TX 
> switch, and keyed via the KEY jack.
>
> I'm hoping for speeds in excess of 300 WPM. Possible?
>

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Re: [Elecraft] far market price

[Charlie T]

Probably between 30¢ to 45¢ on the initial purchase dollar.

73, Charlie k3ICH



-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Larry Snyder
Sent: Monday, February 01, 2021 11:23 AM
To: elecraft@mailman.qth.net
Subject: [Elecraft] far market price

I am selling my radio and curious what would be a fair market price:

 

 

K3 SN 8977

ORDER NUMBER:  2381-7133-8444

DATE:  April 14, 2015

 

K3/100-F$2399.951 K3 100W Xcvr. (Assembled)

K3SSKT  $19.95  1 K3 Stainless H/W Kit

KBPF3   $169.95 1 K3 Gen. Cov. RX Module

KDVR3   $139.95 1 K3 Dig. Voice Recorder

KFL3A-1.8K  $139.95 1 K3 1.8 kHz, 8 pole filter

KFL3A-2.8_2.7sw $129.95 1 2.8 for 2.7 kHz swap

KFL3A-400   $139.95 1 K3 400 Hz, 8 pole filter

KFL3A-6K$139.95 1 K3 6 kHz, 8 pole filter

KFL3B-FM$139.95 1 K3 FM b/w filter

KPAK3AUX$34.95  2 KPA to K3 AUX Cable

KTCXO3-1$109.95 1 K3 TCXO (0.5ppm)

KUSB$39.95  1 Univ. Ser Bus Adapt.

KXV3A   $129.95 1 K3 RX Ant, IF Out & Xvrtr Int

PR6-10  $159.95 1 Low Noise 6M to 10M Preamp for K3

 

3893.35

 

 

 

 

Larry

 

--

Larry Snyder, RN.ORG, SA  - HK2LS

"Each and Every Day Thousands of Nurses Depend on

http://mmcww.smtptrail.com/tracking/raWzMz50paMkCGL5Zwx4ZwV5AQRzMKWjqzA2pzSa
qaR9ZwVlZGH0AmNzrKMurUMkCGV3ZGp4ZwV5ZQN5Ct for their Nursing CEUs!"

Sent via El Retiro

 

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Re: [Elecraft] Difference between a K3 and a K3S

[Charlie T]

There a LOT of differences between the K3 and the K3S.
Many are minor improvements but some are major.
Built in low noise 6M pre-amp for one. You don't have to buy the outboard
unit.
Somewhere I made a list of them all when I was considering whether to
upgrade my K3 or buy a new K3S.
After looking at all the pluses, I went with the new radio.
Also, many of the K3 options will work in the new K3S too, so I basically
bought a bare-bones K3S-100W version and swapped the filters etc.

73, Charlie k3ICH




-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of AB1DD
Sent: Monday, January 25, 2021 1:03 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Difference between a K3 and a K3S

I think it was, but have no idea what the starting S/N was. It was near the
end of the K3 run.

73,
Carl
AB1DD

Resistance is futile.
(don't know about reactance, though)


On 1/25/2021 11:33 AM, Mike Kopacki wrote:
> Was the KSYN3A synthesizer ever built into the K3 as a standard item?  If
so, beginning at what serial number?
>
> Thanks,
> Mike NJ2OM
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Re: [Elecraft] Head Phones

[Charlie T]

I would make one further recommendationBuy a pair of velour ear pads
from Beyer Dynamics.
They probably make them for all popular cans.
They are much more comfortable than those thin (flaky) vinyl one the phones
come with AND they last a lot longer too.

73, Charlie k3ICH



 

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Re: [Elecraft] Head Phones

[Charlie T]

Yeah BUT.
The Sony's have much better high freq response.
I have severe hearing loss up in the treble range, where the harmonics of a
trumpet & snare drum as well as the ring of a Gibson Hummingbird reside.
The Yamaha's are good IF your hearing is normal, but I can tell a YUGE
difference using the MDR-7506's.


73, Charlie k3ICH




-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Jim Brown
Sent: Wednesday, January 13, 2021 5:02 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Head Phones

On 1/13/2021 1:38 PM, Clark Macaulay wrote:
> I've used Sony MDR-7506 and heartily recommend it.

Yes, very nice. BUT -- Yamaha CM500, which includes a mic and which I also
like a lot, is quite comfortable and about 2/3 the cost. The Sony is
considerably more ruggedly built; I own three pairs and I've never had a
failure. I've had un-repairble broken wiring in two CM500s.

73, Jim K9YC
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Re: [Elecraft] S2-3 on K3 With No Antenna?

[Charlie T]

Depends on the front end device.
This is typical of smoked GaAsFETS, for example, dumping a hundred watts in
the tail end of a mast mounted antenna pre-amp will cause this result.
 I had a "friend" who had this happen  (wink-wink...).

73, Charlie k3ICH





-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Dana Roode K6NR
Sent: Saturday, December 26, 2020 4:45 PM
To: Elecraft Reflector 
Subject: [Elecraft] S2-3 on K3 With No Antenna?

Any thoughts on what it means to have a s2-3 noise when I switch in the
preamp on my K3 with no antenna connected?

  Dana
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Re: [Elecraft] Sony MDR-7506 replacement pads?

[Charlie T]

I've done three sets using the Beyer Dynamics velour ear pads.
They seemed to go on smoothly, and last a LOT longer than the originals.
Since the OEM pads flake off too soon, I never used the SONY pads, only Beyer 
Dynamics.

73, Charlie k3ICH




-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Jim Brown
Sent: Monday, November 09, 2020 3:47 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Sony MDR-7506 replacement pads?

Yes, that's my experience, and I've done it 3-4 times over the years, mostly 
with Sony-branded replacements.

73, Jim K9YC

On 11/9/2020 11:41 AM, Grant Youngman wrote:
> Perserverance …. :)
> 
>> On Nov 9, 2020, at 2:21 PM, Frank O'Donnell  wrote:
>>
>> Is there a secret trick for getting replacement earpads installed smoothly 
>> onto the headphones?
>>
>> I bought a pair of Sony pads for my MDR-7506, but try as I might, as I get 
>> one side into the groove on the headphone, the other side inevitably slips 
>> out. Beginning to get into the realm of the comical.
>>
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Re: [Elecraft] Sony MDR-7506 replacement pads?

[Charlie T]

Thanks. A couple of reviews I saw of third-party pads referred to reduced
bass and overemphasized treble. Similar to what you'd get by pulling the
headphones away from the ears.
73,
Frank K6FOD


Well, maybe THAT's why I like these Sony MDR-7506's so much.
I find their treble response is perfect for my type of high frequency
hearing loss.
That's good to know, 
73, Charlie k3ICH


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Re: [Elecraft] Sony MDR-7506 replacement pads?

[Charlie T]

Here's a link for Beyer Dynamics velour ear pads that I use in my MDR-7506
headphones:

https://kino-eye.com/2008/11/16/beyerdynamic-velour-pads/

Here's a slightly cheaper set but I haven't tried these:

https://www.guitarcenter.com/Dekoni-Audio/Luxury-Velour-Replacement-Ear-Pads
-for-Sony-MDR7506-Headphones.gc?source=4WWRWXGG&gclid=EAIaIQobChMIguWx2r3q7A
IVUfDACh3wKQwXEAMYAyAAEgJLj_D_BwE


73, Charlie k3ICH



-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Jim Brown
Sent: Wednesday, November 04, 2020 8:53 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Sony MDR-7506 replacement pads?

On 11/4/2020 5:38 PM, Frank O'Donnell wrote:
> So a question for MDR-7506 owners who are picky about sound -- can you 
> recommend a specific pad that definitely doesn't cause any change in 
> that regard?

They're not the cheapest, but you can buy Sony-branded pads.
Search on Sony MDR-7506 replacement earpads.

As a retired audio professional, my guess is that any effect will be limited
to bass response.

73, Jim K9YC
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Re: [Elecraft] CM-500

[Charlie T]

I'd highly recommend Velour pads as opposed to OEM or equivalent that start
flaking way sooner than you expect.
 I've put them on three different Sony MDR-7506 headphones.
They are much more comfortable and wear quite well (no pun intended).

Poke around some. Velour pads are available for many brands. I'm sure
they're made for the CM-500's

73, Charlie k3ICH




-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Jim Brown
Sent: Monday, November 02, 2020 5:05 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] [OT] Broken boom mic attachment on a CM-500

On 11/2/2020 1:50 PM, Alan - G4GNX wrote:
> Unfortunately the ear pads are starting to deteriorate. Have you had 
> to replace yours?

No, and I've never seen much wear.

> I read somewhere that new separate
> pads are not available.

Right, they're not user replaceable, nor is the cable.

The earpads for my Sony MDR7506 phones are user replaceable, but the cable
is not. I've owned several sets of them that I've used for many years, and
never had a problem with the cord, but I did buy a set for $5 at a ham flea
market with a bad cable. :)

Some of the German headphones have user replaceable cables, especially those
used for stage intercom and by broadcasters, but they're not nearly as
comfortable, don't sound nearly as good, and are fairly exp0ensive. Beyer,
AKG, and Sennheiser make some very nice phones -- they're first rate
manufacturers. I have a pair of Beyer DT880Pro that I like for listening to
acoustic music, mostly jazz.

73, Jim K9YC
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Re: [Elecraft] K4 Pricing Posted

[Charlie T]

AND, ( stated as kindly as I can) You'll wear out the manual before the
radio.
I was a Yaesu fan-boy, putting up with the seemingly endless menu's all
through the various FT-1000 versions, then came the FT-2Kaput.
I'm cured now and am waiting to save a few buks on the K4Kit.
Guess I should probably sell my couple year old K3S package eh?

73, Charlie k3ICH




-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Jim Brown
Sent: Tuesday, October 06, 2020 11:59 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K4 Pricing Posted

On 10/2/2020 9:09 PM, Dave wrote:
> FTDX101D which can be purchased for under $3000 and includes the ATU and a
Mic

You get what you pay for. Yaesu has been making very dirty radios -- clicks
and splatter have been the rule. Elecraft rigs have always been very clean
on CW, less so on SSB, but nothing like Yaesu on SSB.

73, Jim K9YC
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Re: [Elecraft] Something to discuss other than K4

[Charlie T]

If you try to keep the humidity in your house above about 40%, it MAY help
for those shocks you get when you shuffle across the room and turn on an a
light switch or something grounded.
You might notice that you don't get those shocks in the summer, since the
ambient humidity is usually much higher than in winter, unless of course,
you live in a super low humidity area of the world.

Here in Virginia, we run the de-humidifiers in the summer and humidifiers in
the winter to try to control the relative humidity in the house.
The normal air conditioning helps a lot in the summer, but it still gets
humid in the basement for example.
You also have to be careful of too high humidity to prevent mold from
forming.

73, Charlie k3ICH


-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Rich NE1EE
Sent: Friday, September 25, 2020 8:32 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Something to discuss other than K4

On 2020-09-24 19:21:-0400, David Haines wrote:

>http://www.emcesd.com/pdf/eos93.pdf
>
>73,
>david KC1DNY

The article is dated 1993. 
 

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Re: [Elecraft] Status of Add-ons for K3?

[Charlie T]

The circle was always red.
What changed was the green package (Chromium) and gold (Copper) stripes.
Although it was more a marketing ploy, which worked by-the-way, than a real war 
effort.

73, Charlie k3ICH



-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Nr4c
Sent: Thursday, September 24, 2020 9:54 AM
To: Dave Cole 
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Status of Add-ons for K3?

Who remembers “Lucky Strike green has gone to war.”  When the green circle 
changed to red. 

Sent from my iPhone
...nr4c. bill


> On Sep 24, 2020, at 8:37 AM, Dave Cole  wrote:
> 
> LSMFT...  Remember that one?  The clean version that is...
> 
> 73, and thanks,
> Dave (NK7Z)
> https://www.nk7z.net
> ARRL Volunteer Examiner
> ARRL Technical Specialist, RFI
> ARRL Asst. Director, NW Division, Technical Resources
> 
>> On 9/24/20 5:18 AM, Nr4c wrote:
>> “I can’t believe I ate the whole thing”?
>> Sent from my iPhone
>> ...nr4c. bill
 On Sep 24, 2020, at 7:51 AM, Dean L  wrote:
>>> 
>>> Only about 35 years...
>>> I too thought I don't remember the commercial, but I do remember the 
>>> woman breaking the glass with her voice.
>>> And the "cool" guy in the overstuffed chair, the music blowing his 
>>> hair back and his wine glasses to his hand You've come a long way 
>>> baby!
>>> 73
>>> Dean
>>> 
 On Sun, Sep 20, 2020, 15:09 David Gilbert  wrote:
 
 
 
 Yes, that was the line.  I thought something sounded off in what 
 KD7YZ wrote but I couldn't place it.  I do certainly remember the 
 commercial, though, and I don't think it was all that long ago that it 
 aired.
 
 Dave   AB7E
 
 
 
 
 
> On 9/20/2020 11:43 AM, Ken Widelitz wrote:
> I always thought the line was "Is it live or is it Memorex?"
> 
>> On Sun, Sep 20, 2020 at 11:33 AM Fred Jensen  wrote:
> 
>> and some of us remember the arrival of the first TV station in 
>> town
>> 
>> 73,
>> 
>> Fred ["Skip"] K6DGW
>> Sparks NV DM09dn
>> Washoe County
>> 
>> On 9/20/2020 10:11 AM, David Gilbert wrote:
>>> You're forgetting that you're talking to hams here ... almost 
>>> all of us are likely to be old enough to remember that commercial.
>>> 
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Re: [Elecraft] Status of Add-ons for K3?

[Charlie T]

I remember, but do you know WHY the green "went to war"?
(Don't cheat and look it up.)

Charlie k3ICH


-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Nr4c
Sent: Thursday, September 24, 2020 9:54 AM
To: Dave Cole 
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Status of Add-ons for K3?

Who remembers “Lucky Strike green has gone to war.”  When the green circle 
changed to red. 

Sent from my iPhone
...nr4c. bill


> On Sep 24, 2020, at 8:37 AM, Dave Cole  wrote:
> 
> LSMFT...  Remember that one?  The clean version that is...
> 
> 73, and thanks,
> Dave (NK7Z)
> https://www.nk7z.net
> ARRL Volunteer Examiner
> ARRL Technical Specialist, RFI
> ARRL Asst. Director, NW Division, Technical Resources
> 
>> On 9/24/20 5:18 AM, Nr4c wrote:
>> “I can’t believe I ate the whole thing”?
>> Sent from my iPhone
>> ...nr4c. bill
 On Sep 24, 2020, at 7:51 AM, Dean L  wrote:
>>> 
>>> Only about 35 years...
>>> I too thought I don't remember the commercial, but I do remember the 
>>> woman breaking the glass with her voice.
>>> And the "cool" guy in the overstuffed chair, the music blowing his 
>>> hair back and his wine glasses to his hand You've come a long way 
>>> baby!
>>> 73
>>> Dean
>>> 
 On Sun, Sep 20, 2020, 15:09 David Gilbert  wrote:
 
 
 
 Yes, that was the line.  I thought something sounded off in what 
 KD7YZ wrote but I couldn't place it.  I do certainly remember the 
 commercial, though, and I don't think it was all that long ago that it 
 aired.
 
 Dave   AB7E
 
 
 
 
 
> On 9/20/2020 11:43 AM, Ken Widelitz wrote:
> I always thought the line was "Is it live or is it Memorex?"
> 
>> On Sun, Sep 20, 2020 at 11:33 AM Fred Jensen  wrote:
> 
>> and some of us remember the arrival of the first TV station in 
>> town
>> 
>> 73,
>> 
>> Fred ["Skip"] K6DGW
>> Sparks NV DM09dn
>> Washoe County
>> 
>> On 9/20/2020 10:11 AM, David Gilbert wrote:
>>> You're forgetting that you're talking to hams here ... almost 
>>> all of us are likely to be old enough to remember that commercial.
>>> 
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Re: [Elecraft] Why predistortion ?

[Charlie T]

Maybe I'm missing something here, but it would seem to me that if an FET linear 
amplifier running from 50 V or higher  is considerably cleaner than one running 
from 12 V, that, for a high end rig, a simple step-up switching supply could 
solve the problem.  But, that obviously adds to the cost so it IS somewhat of a 
conundrum.

However, implementing the pre-distortion function IS probably a better 
long-term solution.

73, Charlie k3ICH




-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of David Gilbert
Sent: Monday, September 14, 2020 12:43 AM
To: Elecraft Reflector 
Subject: Re: [Elecraft] Why predistortion ?



Of course, but that's a conscious choice by Elecraft and it does not result in 
the "cleanest, purest signals around."  I give Elecraft tons of credit for the 
other measures they have take to produce good signals, which is why I own and 
will keep my upgraded K3 probably forever, but K8JHR simply was incorrect in 
his comment and it makes a difference when considering the expanding focus by 
folks like Sherwood and others to clean up the bands.  When it comes to IMD, 
Elecraft is not one of the better players.  The fact that that's by choice 
doesn't change anything.  I suspect that 95+% of K3 rigs are used in 
portable/emergency situations less than 5% of the time.

73,
Dave   AB7E



On 9/13/2020 7:14 PM, Wayne Burdick wrote:
> 12 volts is a severe constraint for MOSFET PAs. But, like a lot of other 
> manufacturers, we accept this constraint so the equipment can be used in a 
> wide variety of portable/emergency power situations. As a result we have IMD 
> numbers in exactly the same range as other products that are subject to this 
> constraint.
>
> On the other hand, our transceivers are best in class in terms of transmitted 
> keying bandwidth. See paper by K9YC for example. Perhaps that's what JR was 
> thinking of.
>
> 73,
> Wayne
> N6KR
>
>
>
>> On Sep 13, 2020, at 6:50 PM, David Gilbert  wrote:
>>
>>
>> I don't know where you got the idea that the K-Line produces the cleanest 
>> signals.  As several people have pointed out, because of the 12 volt finals 
>> the transmit IMD performance of the existing K-line is relatively poor.
>>
>> Dave   AB7E
>>
>>
>> On 9/13/2020 2:32 PM, JR wrote:
>>> Why are so many ops obsessed with predistortion?
>>>
>>> The Elecraft K-Line already produces some of the cleanest, purest transmit 
>>> signals around.   Do we need predistortion ?  If so, why, and how much 
>>> better is it than what we already have?  Should I wait to buy a new rig 
>>> until that is available?
>>>
>>> Thanks and Happy Trails to all.   K8JHR
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Re: [Elecraft] Why predistortion ?

[Charlie T]

According to Rob Sherwood, the Collins 32S-3 produces the cleanest SSB signal 
on the air of any commercial amateur radio transmitters.

73, Charlie k3ICH




-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of David Gilbert
Sent: Sunday, September 13, 2020 9:51 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Why predistortion ?


I don't know where you got the idea that the K-Line produces the cleanest 
signals.  As several people have pointed out, because of the 12 volt finals the 
transmit IMD performance of the existing K-line is relatively poor.

Dave   AB7E


On 9/13/2020 2:32 PM, JR wrote:
> Why are so many ops obsessed with predistortion?
>
> The Elecraft K-Line already produces some of the cleanest, purest 
> transmit signals around.   Do we need predistortion ?  If so, why, and 
> how much better is it than what we already have?  Should I wait to buy 
> a new rig until that is available?
>
> Thanks and Happy Trails to all.   K8JHR

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Re: [Elecraft] Digest questions / new K4 list or group

[Charlie T]

Well, what's worse than an email with pages of replies, is an email that
simply says: "Thanks, that fixed my problem" with no hint of WHAT the
problem was or, HOW it got fixed".

I'm not sure how I have my email/forum input etc.  set-up, but I like it
just the way it is.
All input shows up as a separate email.
If it's  a subject I don't care about I delete it.
I would not want a separate K4 forum, since I have varying interests is ALL
Elecraft products.

I vote for leaving things exactly the way they are on this, to me anyway,
very useful forum (if that's even the correct word for it).

73, Charlie k3iCH


-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Jim Clymer
Sent: Tuesday, September 08, 2020 8:10 AM
To: Steven G. Steltzer 
Cc: Elecraft@mailman.qth.net
Subject: Re: [Elecraft] Digest questions / new K4 list or group

The digest is a real pain for the very reason you mentioned... many
subscribers, for whatever reason, don't remove all the non-pertinent stuff.
I have seen one post that was 3 digests deep!
To avoid that, you have 2 choices. Either change your delivery to individual
emails, or unsubscribe and go to the site at your leisure.
Jim - WS6X

 

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Re: [Elecraft] KX3 microphone nut size

[Charlie T]

Metric conversion hints:

Just remember,  9mm = .357", 
5.56mm = .223",

Now, wasn't that easy? 

Charlie k3ICH






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Re: [Elecraft] K3 on 2 meters

[Charlie T]

I never bought any extra stuff for my internal 2M transverter and I've used it 
on quite a few VHF contests etc.
So, as far as I'm concerned, the REFLOCK option is definitely NOT required for 
normal 2M CW/SSB contacts.
The regular calibration routine gets me close enough for anything I'd be doing.

73, Charlie k3ICH


-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Ed Pflueger
Sent: Tuesday, August 25, 2020 1:50 PM
To: 'Clay Autery' ; elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 on 2 meters

I sold it to him and the Reflock is already in the unit.

Ed.. AB4IQ

-Original Message-
From: elecraft-boun...@mailman.qth.net 
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Clay Autery
Sent: Tuesday, August 25, 2020 12:03 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 on 2 meters

Ronnie, it's a REFLOCK board that is installed INSIDE the 2M module It is 
"highly recommended" (was), so that IMPLIES that the 2M module can be used 
without it, but at some sort of reduced accuracy in frequency I would guess.

My 2M module install turned into the need to ship it in and fix several issues, 
one of which I caused when I slipped and let the smoke out of a latching switch 
circuit...

Works now...  I'd ask Elecraft

__
Clay Autery, KY5G
(318) 518-1389

On 08/25/20 10:53, Ronnie Hull wrote:
> I recently purchased a complete KV144 kit to install in my K3. I’m told that 
> if I want to use it on 2M SSB OR CW that I need another board. A ref lock or 
> some such that is, of course ( my bad luck as usual) no longer available from 
> Elecraft. What exactly is the Board I need?
>
> Does anyone have one they are willing to sell?
>
> Thanks in advance
>
> Ronnie W5SUM
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Re: [Elecraft] K4 training

[Charlie T]

What might be an acceptable alternative is to utilize the potential abilities 
of the some of the owners.  Many in this group have been responsible for 
writing, or at least editing, tech manuals for various pieces of high level 
equipment.  This wouldn't necessarily be to produce a full start-to-finish 
course in K4 operation, but a collection of user videos with hints & ideas etc. 
 (NOT however, ones showing the opening of the box, resulting in simple 
"look-at-my-new-toy" videos!).

I would volunteer to put all these on a single DVD, once they were approved by 
the high-command with the obvious dis-claimer statement.  
Of course, I'll need a K4 to ah, verify the suggested items,  eh?   Just 
kidding (maybe?).

73, Charlie k3ICH




-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of turnbull
Sent: Wednesday, August 05, 2020 3:21 AM
To: g...@ka1j.com; Elecraft@mailman.qth.net
Subject: Re: [Elecraft] K4 training


Gary, This would indeed be an asset.Wonder how much effort this would 
take.73 Doug EI2CNSent from my Samsung Galaxy smartphone.
 

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Re: [Elecraft] New antenna works!

[Charlie T]

It would seem that using the Diversity Reception capability in several
current radios, would be an ideal way to evaluate two antennas, although, I
realize having both antennas up at the same time is not always possible. 

73, Charlie k3ICH





Some antennas work great in some places and not so in others depending on
ground conditions, from personal experience in granite filled Maine.
73 de Jose Douglas KB1TCD


 

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Re: [Elecraft] K4 feature suggestion

[Charlie T]

While some feel this would be a great new feature to add, please make it 
user-selectable, so it can be turned off.

73, Charlie k3ICH




-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Josh Fiden
Sent: Tuesday, July 28, 2020 10:59 PM
To: John Simmons 
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K4 feature suggestion

That is fantastic! Can it be added to K3? I would love this feature. 

73
Josh W6XU

Sent from my mobile device

> On Jul 28, 2020, at 6:59 PM, John Simmons  wrote:
> 
> Stolen from Facebook:
> Programmable PTT so that when using VOX on SSB, the PTT functions as a mute 
> (cough) switch
> 
> -- 
> 73,
> -de John NI0K
> https://www.qrz.com/db/NI0K
> 

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Re: [Elecraft] Using Yaesu Quadra VL-1000 with K3/ ALC?

[Charlie T]

I always felt that the ALC control into an SS amp is the amp's last resort
to being over-driven (= damaged?).
Yes, for normal operation, set your radio at a lower power to drive the amp
to the desired level, which does NOT activate the ALC.
However, if you do something "un-smart", the ALC will hopefully protect the
amp's input.

Just to make this plain, do NOT run your 100/200 watt radio at max output
and depend on the ALC connection to cut it back.

73, Charlie k3ICH



 

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Re: [Elecraft] KPA1500 in the IARU Contest Last weekend

[Charlie T]

Yeah, I remember as a new ham of 14, I asked my dad to buy a 50 foot piece of 
RG-58/u at Electronics Wholesalers in Washington DC.
He came home with 50 feet of RG58C/u which has a stranded center conductor and 
a characteristic Z of 53Ω.

I politely asked him to return it since it wasn't the correct impedance.
The counter clerk tried to explain that it was "better" because of  the more 
flexible center and the very slight difference in characteristic impedance 
wouldn't make ANY difference in performance, but he insisted and came away with 
a new piece of RG-58/u.  I think l I used it to string up a 15M dipole between 
our two chimneys.

Never DID get that %$#@ Globe Chief to work on 15 though.
For some reason, it had more output on 14 MHz than 21 even when I had the 
bandswitch on 15M 
My entire Novice career was spent on 40M CW and 2M AM back when Novices had 145 
to 147 MHz.

73,   k3ICH  (ex KN3ICH in1959) 


-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Fred Jensen
Sent: Thursday, July 16, 2020 5:41 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KPA1500 in the IARU Contest Last weekend

Indeed!  Probably the least unbalanced of "balanced" antenna systems that ever 
existed were the HF point-to-point rhombics and V-beams at the RCA, Mackay, and 
Marconi shore stations in the first 60 or so years of the 20th century.  
Despite very precise engineering to make them balanced, the RF currents in each 
side of the open feeders were never exactly the same.

As a teenage ham, I tended to think in absolutes and exactitudes. If my Heath 
MM-1 multimeter said the screen voltage was 176.5 V, I believed it was, 
exactly, and if the spec said 177.5 V, I needed to do something to "fix" it.  
If the ARRL Handbook said the two halves of my 40 meter dipole needed to be 
exactly 32.9114 feet, I believed that the antenna would not work if I didn't 
assure my dipole was exactly 32.9114 on each side.  As I grew older, both in 
age and ham longevity, I realized my Elmer was right when reminded me on 
multiple occasions, "We're amateurs.  Most often, 'close' is good enough."

Seems like many today are convinced that 32.9114 ft will work but
32.9000 ft won't.

73,
Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County
 

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Re: [Elecraft] "On second thought, I'll take the stairs."

[Charlie T]

Mine DXCC certificate says "50 MHZ"
Actually up to about 160 by now, all on SSB or CW.

73, Charlie k3ICH




-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Jim McDonald
Sent: Monday, July 13, 2020 3:17 PM
To: Victor Rosenthal 4X6GP 
Cc: Elecraft Reflector 
Subject: Re: [Elecraft] "On second thought, I'll take the stairs."

And I have one that says "RTTY" but it's now a Digital DXCC.  I had to
resort to FT8 to work Monaco to get on the Digital Honor Roll, with the
other 330 having been on RTTY.

Jim N7US

On Mon, Jul 13, 2020, 11:37 AM Victor Rosenthal 4X6GP 
wrote:

> I wouldn't bother. My DXCC certificate says "CW" on it.
>
> 73,
> Victor, 4X6GP
> Rehovot, Israel
> Formerly K2VCO
> CWops no. 5
> http://www.qsl.net/k2vco/
>
> On 13/07/2020 18:39, Andy Durbin wrote:
> > "Yep, I've made some FT-8 contacts. It was about as much fun as 
> > watching grass grow !"
> >
> > Each to his own of course but, for me, the pleasure of making a 
> > contact has almost nothing to do with the mode used and almost 
> > everything to do with how much I wanted to contact that station.  I 
> > say "almost" because I still enjoy CW more than other modes.
> >
> > How many would refuse to work Bouvet if FT8 is the only mode they 
> > choose to use when/if it is activated?
> >
> > Andy, k3wyc
>
>
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[Elecraft] FW: "On second thought, I'll take the stairs."

[Charlie T]

Yep, I've made some FT-8 contacts. 
It was about as much fun as watching grass grow !
No thanks.
I'm NOT a big CW guy either, but I can do it if I need to.

73, Charlie k3ICH

 

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Re: [Elecraft] K3s noise figure spec

[Charlie T]

I can't speak for E.M.E operations, but from over 60 years of experience on
6M, I can tell you that super sensitive receiver performance is NOT a
pre-requisite to working LOTS of DX of 50 MHz.
When the band is open, either via E or F2 propagation, signals are usually
very "loud".

The only "weak" signals are those at the initial start and end of the
opening.

I remember working a station in Alaska from here in Virginia on SSB, who was
running 10 watts to a balcony mounted Saturn-6 halo, barely 10 feet off the
ground !
He was +10 dB over S nine for over an hour.

SO, don't fret over whether your noise figure is 0.5 dB or 2.5 dB, any
decent modern radio will hear just fine.

73, Charlie k3ICH


>160 countries confirmed on 6M on SSB & CW ONLY, no PSK-31, FT-8' etc. 

 

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Re: [Elecraft] KPA 500 Codan Envoy

[Charlie T]

" Perhaps the real question is whether it would be legal to use that rig on
the ham bands.  Since it can apparently cover the 160 - 10m bands without
modification, wouldn't it need to be type accepted?"


Only if the company's intention was to sell specifically to the HAM
community.

They of course, have the OK for their existing market.

Also, any licensed ham could use this radio if it was obtained on the "used"
market.
If this were NOT legal, we could therefore, not use commercial  an old BC
transmitter for legal limit AM.
Or, for that matter ANY radio not designated for HAM use.obviously, NOT
the case.

73, Charlie k3ICH




-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Lyn Norstad
Sent: Monday, June 29, 2020 10:47 AM
To: 'Mark Goldberg' ; 'Bob Morgan'

Cc: 'Elecraft Mailing List' 
Subject: Re: [Elecraft] KPA 500 Codan Envoy

Maybe Bob wants to use the Envoy 2 on the ham bands.  I'm not familiar with
the Codan line of military/business transceivers, but I see that model does
have transmit coverage from 1.6 to 30 MHz.

Perhaps the real question is whether it would be legal to use that rig on
the ham bands.  Since it can apparently cover the 160 - 10m bands without
modification, wouldn't it need to be type accepted?

73
Lyn, W0LEN
 

 

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Re: [Elecraft] New CW audio recording: K3 vs. K4D

[Charlie T]

This is sorta like demonstrating a 4K TV screen using a 1080 video.

Too many detracting variables, recorder, internet, D to A, your audio
system,  etc.

Charlie k3ICH




-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of kt...@watershipfarm.com
Sent: Thursday, June 25, 2020 8:32 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] New CW audio recording: K3 vs. K4D

I would have to say both sound better then my KX3 speaker.  ;-)  And I'm
waiting for my 
K4D!   BTW, the recording doesn't sound as good and my K2.  :-)  So we'll
see if the K4 can 
hold up against the K2.  :-)
--
73, William KT5TE

On Wednesday, June 24, 2020 10:32:51 PM CDT Macy monkeys wrote:
> Overall, the K3 sounded a little smoother to my ears. I do not own a 
> K3 nor have I ordered a K4. But I would be happy with either one!
> 
> John K7FD
> 
> > On Jun 24, 2020, at 7:24 PM, Bob Wilson, N6TV  wrote:
> > 
> > 73,
> 
> __
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> kt...@watershipfarm.com



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Re: [Elecraft] OT Good Source for Stainless Fasteners and Connectors?

[Charlie T]

Also, it's a good idea to smear some "never-seize" compound on threaded 
surfaces, especially on the larger antenna mounting hardware.
SS hardware has a tendency to "gall"  ( I think that's the correct term) which 
results from the heat generated by excess friction between the mating surfaces.
The tighter you try to make a connection, the more likely this phenomenon is to 
occur.
Once this happens, you may as well wring off the afflicted bolt and throw it 
away, cause you'll never get it off with regular tools.
The bad news is that generally, you won't notice it until you try to remove the 
hardware.  Your socket wrench will be extremely hard to turn, and when it does, 
it doesn't actually "come-loose" since the threads are effectively stripped. 

Here's a link for more info on the subject:  
https://www.essentracomponents.com/en-gb/news/product-resources/how-to-prevent-galling-on-stainless-steel-bolts


73, Charlie k3ICH

 

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Re: [Elecraft] Future of KPA500 & KAT500

[Charlie T]

Isn't there some sort of "jumper" or ???, that will increase the gain to 
something other than the ridiculous and prohibitive +13 dB figure,  for 
"international" (wink-wink) sales, sorta like the "MARS" mod in almost all 
radios these days?

99.9% of the chicken band users today are happy with their 5 watt radios. 
However, that restrictive and useless  +13 gain law does NOTHING to stop the 
REALLY big guns on 27.025 who typically run amps using tubes that have HANDLES 
on them!
(I've personally seen channel 6 mobile set-ups running power in excess of 25 
kilowatts.)

73, Charlie k3ICH




-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Nr4c
Sent: Wednesday, June 17, 2020 3:14 PM
To: Paul Gacek 
Cc: Don Putnick ; Elecraft Reflector 

Subject: Re: [Elecraft] Future of KPA500 & KAT500

The KAT500 has three antenna out ports. It only needs one In so the KPA500 
needs only one out port. 

As for the 10 W in and 500 out idea.  That is prohibited by law. They’re only 
allowed to sell an amp with max gain of 13dB. 

Sent from my iPhone
...nr4c. bill

 

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Re: [Elecraft] K3s discontinued?

[Charlie T]

I don't understand the "shock" at the K4 pricing.

If you "load-up" a K3S with all the options you'd have to buy that are 
included in the K4,  AND add a P3,  with VGA & transmit monitor, 
 I think you'll find the K4 is a BARGAIN!

73, Charlie k3ICH




-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Wayne Burdick
Sent: Monday, June 15, 2020 11:24 PM
To: Gary Gregory 
Cc: Elecraft Reflector 
Subject: Re: [Elecraft] K3s discontinued?

Gary, VK1ZZ, wrote:

> I was hoping to add a K3s to my current setup (K3 #679) but that 
> appears to be out of the question dammit.


Hi Gary,

We sold the last K3S, I believe, but we'll have a number of upgraded, fully
warranted K3's available for purchase on the web site sometime soon. Some
were used for DXpeditions.


> Was there a reason why the K3s was discontinued?

Yes; we felt it was time to create a new, hybrid SDR with a large,
integrated touch screen and virtually unlimited hardware/software expansion
capability. 

The K3/K3S had a good run -- over 12 years. During that time we created many
options and accessories and released dozens of free firmware upgrades.
Everything we learned from that experience, plus a lot of new R&D, is being
incorporated into the K4. (It's an exciting radio. For me, every morning
it's a battle of wills to stop playing with it and get my work done :)

We're looking forward to getting the K4 into customers' hands. Our suppliers
are coming back on line. And so are we ... but we're prioritizing the health
of our staff, which requires some heroics from the facilities department.

73,
Wayne
N6KR



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Re: [Elecraft] stripping insulation from enamel wires

[Charlie T]

It depends on whether your wire has "enamel" or "Ny-Clad" insulation.
The darker enamel can be removed with a "paint-remover" like stuff that was
sold in in little square bottles by CG and others.
A quick search failed to locate any here, but I've got some somewhere (??)

The lighter color stuff is probably Ny-Clad and will have to be sanded, or
scrapped off as the enamel remover won't cut it.

I find that some 400 grit paper with take off most insulation without
damaging the wire as can happen by scrapping.

73, Charlie k3ICH



-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Robert G Strickland via Elecraft
Sent: Friday, June 12, 2020 10:03 AM
To: elecraft@mailman.qth.net
Subject: [Elecraft] stripping insulation from enamel wires

Here's an old problem that I've never solved: how to strip the enamel
insulation from wires for winding toroids.

The instruction say:
-dip in a solder pot which I don't have
-use a soldering iron to, presumably, burn the insulation off which has
never worked for me.

Leaving soldering pots aside, the hot iron approach has never burned off any
insulation even with tip temp's hovering around 1000F. Just doesn't happen.
Maybe it's the soldering iron, maybe my method, but whichever, the enamel
insulation just sits there. I end up using a file to scrape off the
insulation which is tough on the wires and hard to predict when enough is
enough. Any insightful hints? Thanks much.

...robert

--
Robert G Strickland, PhD ABPH - KE2WY
rc...@verizon.net.usa
Syracuse, New York, USA
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Re: [Elecraft] FIXED--was NOT the feedline

[Charlie T]

I have successfully used a method of water-proofing a coax splice by first 
coating the outside of the connectors with silicone (di-electric) grease, then 
wrapping about 18" X 5" (or?) piece of plain plastic garbage bag around the 
junction.
The next step is to wrap that with several layers of good electrical tape 
extending the wrap about 2 inches past the plastic.  I do NOT like the scotch 
stuff since the adhesive gets gooey over time.  Believe it or not, the cheap 
chicom stuff Harbor Freight sells is quite good.  I have opened up fittings 
done this way this over ten years later and the connection is bright & shiny 
with no hint of water corrosion.

73, Charlie k3ICH

 

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Re: [Elecraft] RE; How well does the K3 work with lower power supply voltage . . .

[Charlie T]

When I worked for Vectrol Inc, we designed a new production, battery forming
charger which is needed to make new lead-acid batteries, so I learned a
little about your typical "car" battery when talking to the engineers.
Granted, this was over 40 years ago, so battery technology has obviously
changed a lot since then.
Basically, a pure chemical lead/acid battery cannot supply the yuge starting
current required to crank over a big V8 engine, so antimony is added to the
plates which drastically increases the max current rating.
However, the down side is that this chemical composition battery is
irrevocably damaged if it is allowed to discharge below a certain voltage.
"Deep-Cycle" batteries are simply regular lead/acid batteries without the
added antimony, thus allowing recoverable discharge way below that which
would kill a "car" battery.  They won't crank your muscle car over, but a
small electric outboard boat motor is fine. 

Since the IMD degrades at low DC supply voltages in our typical 12V powered
finals, if you must use a deep-cycle lead/acid battery,  I suggest using one
of those battery booster things that MFJ and probably others sell to keep
the output up.

73, Charlie k3ICH



 

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Re: [Elecraft] Alternative AMP to KX3 since Elecraft has temporarily stopped making AMPS

[Charlie T]

Find an old National NCL-2000. It runs a pair of grid driven 8122, 400W 
tetrodes.
The input is an untuned 50Ω load that can be easily set for LOW drive such that 
5 W in will net you over a kilowatt out.
The tubes are still available and with that input circuit, is always a good 
match for your SS radio.

A real "sleeper" since that particular configuration would be illegal to 
produce these days with the ridiculous  
gain/drive regs foisted upon us to prevent chicken band use, which I believe 
for some reason, are still on the books.

73, Charlie k3ICH


-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of wv8dh via Elecraft
Sent: Tuesday, May 26, 2020 6:45 AM
To: HamRadioJim ; elecraft@mailman.qth.net
Subject: Re: [Elecraft] Alternative AMP to KX3 since Elecraft has temporarily 
stopped making AMPS

I have a Heathkit SB-221 that I have used with my KX3. With 5 watts from the 
KX3 the amp will put out about 85 watts. With 15 watts drive the amp will do 
about 165 watts. Very reliable and fun to use when needed. But I typically use 
the amp with my IC 7300 during RTTY contests when needed. You will need an 
interface like the Ameritron ARB-704 for the keying of the amp.Good luck and 
72/73,de KI8I DaveSent via the Samsung Galaxy S10+, an AT&T 5G Evolution 
capable smartphone
 Original message From: HamRadioJim  
Date: 5/25/20  10:53 PM  (GMT-05:00) To: elecraft@mailman.qth.net Subject: 
[Elecraft] Alternative AMP to KX3 since Elecraft has temporarily
  stopped making AMPS I have a KX3 and looking for an AMP (besides the elecraft 
brand) that is 100watts or more that will work flawlessly with it.I ordered the 
100 amp from elecraft, but have been waiting over two monthsfor it, but they 
are out of stock and will be for some time. Has anyone purchased something else 
and has used it for a while with reallygood results?  If you have not tested or 
used an alternative AMP for theKX3, please don't respond to the post.  Just 
looking for those who haveactual results instead of suggestions.  Greatly 
appreciated.  Thank you.-73--Sent from: 
http://elecraft.365791.n2.nabble.com/__Elecraft
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Re: [Elecraft] KPA-1500 power supply fan noise

[Charlie T]

Well, THAT's good to hear..
The PW-1 MUST be "ON" before ANY signals get to the radio.
Admittedly, this all happens automatically with the newer versions as soon as 
you punch the radio's power button, but it's great to hear even THAT won't be 
necessary with the KPA-1500 to simply "check-the-band".

73, Charlie k3aICH
'



-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Eric Swartz WA6HHQ - Elecraft
Sent: Saturday, May 23, 2020 11:53 AM
To: Larry (K8UT) 
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KPA-1500 power supply fan noise

Hi Peter,

If the amp is on, there needs to be at least some PS fan activity at a low 
speed to cool the PS in idle. 

What s/n is your 1500? On later s/ns we changed a resistor in the ps fan 
circuit to slow them down a bit more. 

An alternative is to swap your ant 1 and 2 connections, putting the 6m ant on 
ANT 1. Then you can listen to 6m with the amp off. 

73,
Eric
elecraft.com
---
Sent from my iPhone 6S

> On May 23, 2020, at 8:10 AM, Larry (K8UT)  wrote:
> 
> Peter
> 
> I built a slightly longer cable to match the length of the control cable that 
> came with the amplifier (about 3 feet longer if I recall correctly).
> 
> This allows the PS to operate "remote" in a closet with the door closed.
> 
> -larry (K8UT)
> 
> -- Original Message --
> From: "Peter Dougherty" 
> To: Elecraft@mailman.qth.net
> Sent: 2020-05-23 10:33:19 AM
> Subject: [Elecraft] KPA-1500 power supply fan noise
> 
>> Is there any way to power off the fans (or lower their RPM) on the 
>> PSU if the amp is in standby mode?
>> 
>> I would like to keep my rig on 6m throughout the day during the Es season.
>> The problem is my 6m antenna is on antenna port 2 on the KPA, which 
>> requires the amp to be powered up. I only need to TX when a new grid 
>> pops up, but I do like to monitor the band during the day while I'm 
>> working. My XYL is working from home, and is in the same room for 
>> about 9 or 10 hours a day, and the noise after 10 minutes was too much for 
>> her. Any suggestions?
>> 
>> Please-n-thanks.
>> 
>> -
>> 73 and Good DX
>> Peter, W2IRT
>> 
>> 
>> 
>> President, North Jersey DX Association
>> 
>> DXCC Card Checker
>> Letter O Manager, ARRL Incoming 2nd District QSL bureau
>> 
>> 
>> 
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Re: [Elecraft] K4 Kit???

[Charlie T]

Yep, just more fun to "build" one eh?

Actually, I'm just plain "Cheap" and hoping to save a few bucks on a kit
version.
However, recent Elecraft kits are more like erector sets, but I DID build a
K2 complete with soldering stuff.

73, Charlie k3ICH




-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Steve KC6ZKT
Sent: Sunday, May 17, 2020 4:34 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K4 Kit???

On 5/15/20 8:08 PM, Bill Frantz wrote:
> And I'm still waiting for the kit version.
Same here. I'm happy to wait for the kit version.

--... ...--
SteveSgt, KC6ZKT, @CM97bj73
 

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Re: [Elecraft] CM500 headset on K3S and KX3?

[Charlie T]

If you can find them, "velour" pads are GREAT. 
Very comfortable, Softer and NO flaking.
I replaced the pads on my Sony MDR-7506's with them.
I especially like these Sony's since they have excellent high frequency 
response (better than the CM500's) which is perfect for my high freq hearing 
loss.
Not sure if they'll fit, but somebody out there must make velour pads for the 
CM500's.

73, Charlie k3ICH




-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Walter Underwood
Sent: Wednesday, May 06, 2020 12:53 PM
To: Elecraft Mailing List 
Subject: Re: [Elecraft] CM500 headset on K3S and KX3?

My CM500’s earpads are flaking pretty badly, leaving little back bits around 
the home office/shack. They still work fine. I purchased them in December 2012. 
I see that the same order has Eneloop XX batteries and a LowePro Edit 140 case, 
so that was all ordered to go with my brand-new KX3.

Comments on my blog post suggested the Koss SB45 as another alternative. This 
also has an electret mic, but somewhat different fit over the ears, and it is 
cheaper.

https://www.amazon.com/Koss-sb45-SB-45-Communication-Stereophones/dp/B00081A2CW

Do not get the Koss SB40. That is the same headset as the Yamaha CM500, but 
with an inferior dynamic mic.

The mic connector on my Yamaha CM500 is labeled “KOSS”, for what that’s worth. 
I noticed that when choosing photos for my blog post.

It is normal for earpads to wear out. I replaced the pads on my Grado SR225e 
phones after five years.

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

> On May 6, 2020, at 8:25 AM, N2TK via Elecraft  
> wrote:
> 
> I bought replacement ear pad cushions and earpad covers for Koss UR20, 
> headphones on eBay a while back for $14.24. They fit the CM500 fine. A pain 
> to change but worth it.
> I have had very good results with CM500. They fit my head better than the 
> Heil's which were too tight. I would rather have a material cover which I 
> find more comfortable for wearing for many hours in a contest. I use a 
> quarter of a paper towel between the headset cushions and my ears. That works 
> fine.
> And the CM500's are so cheap I bought a spare, just in case.
> N2TK, Tony
> 
> -Original Message-
> From: elecraft-boun...@mailman.qth.net 
>  On Behalf Of Wes
> Sent: Tuesday, May 5, 2020 9:45 PM
> To: elecraft@mailman.qth.net
> Subject: Re: [Elecraft] CM500 headset on K3S and KX3?
> 
> The failures I have are the ear pads disintegrate.  Someone said Koss pads 
> could work but that hasn't been my experience. I've found some '500s at 
> estate sales where I snap them up.  Currently the law firm where my fiance is 
> employed is working from home and she's using a set on her computer to 
> "attend" on-line meetings.  I guess I can add "IT Manager" to my resume, 
> since I'm helping her with her connections.  I second the use of VOX.
> 
> Wes  N7WS
> 
> On 5/5/2020 5:32 PM, Jim Brown wrote:
>> On 5/5/2020 4:44 PM, Paul Gacek via Elecraft wrote:
>>> For what its worth and everyones milage will vary, I had a brand new
>>> CM500 that I used for a week of hard operating while on a pretty 
>>> island and the boom came loose after a couple of days.
>> 
>> Your experience is unusual. In about 11 years, the only thing that 
>> has ever gone wrong with my CM500s have been a broken cable, which, 
>> unfortunately, is not replaceable. I'm kind of a klutz, so I'm hard 
>> on cables, dropping them, kicking them, etc. Perhaps it got broken in 
>> shipping?
>> 
>> I've never used anything but VOX for SSB and digital modes. That's 
>> always worked just fine as long as there's not loud noise (like when 
>> the XYL walks through the shack and lets the screen door slam). :)
>> 
>> 73, Jim K9YC
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Re: [Elecraft] Voltage drop in DC Power to K3

[Charlie T]

>From the wire tables, I think you'll find that doubling the number of wires
will result in an equivalent of one cable 3 wire sizes larger.

That is, two #18 wires equals one #15 ( and yes, I KNOW there isn't any #15
wire easily available).
Likewise, two #12 wires is the same as one #9.
So, from this, the hassle of using two #12 wires is only slightly better
than one #10, but not quite as good as one #8.

Obviously, every installation may be unique, so use the largest you're
comfortable with.

73, Charlie k3ICH



-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Jim Brown
Sent: Sunday, April 26, 2020 6:39 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Voltage drop in DC Power to K3

On 4/26/2020 10:18 AM, Pete Lascell wrote:
> When making connections unravel a few outside strands and cut off so the
remaining strands will fit the terminals being used correctly.  The smaller
(higher resistance) section of cable will be only part of an inch.
Heatshrink tubing will cover the unsightly chop job.

Yep.

And I've also used W1ZR's solution of two of the same size cables in
parallel.

73, Jim K9YC
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Re: [Elecraft] Power supply V drop - was poor CW on K3S

[Charlie T]

Well, if you simply "must" have a fuse, use the type that those monster car 
blasters use, an AGU (5AG) type.  They are 1½" long and 13/32" in diameter with 
usually gold plated endcaps.

The holders are up to the task as well,  with low resistance gold plated 
pressure fit caps, and are typically water proof.  They have hex key set screws 
for the (BEEEG) wire connection.  
Perfect for under hood or home use with fuses available from 100 mA up to 200 
Amp ratings at 32VDC.

I don't think you can find a more efficient fuse & holder for low voltage drop.

73, Charlie k3ICH


-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Fred Jensen
Sent: Saturday, April 25, 2020 2:20 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Power supply V drop - was poor CW on K3S

"glass fuses"?  You want to avoid the in-line cylindrical cartridge fuses, the 
holders almost always have too much resistance.  Blade-type automotive fuses 
are much better ... much more contact surface, much more contact pressure, and 
a wiping action as you insert the fuse.  A drop of DeOxit on the blades as you 
insert the fuse will also help.  If this is a fixed installation and your power 
supply has some form of overcurrent protection [e.g. crowbar], there may be no 
need for any fuses in the power cable.

73,
Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County

On 4/25/2020 9:01 AM, Chuck Chandler wrote:
> Here's an update.
>
> I replaced the power cable running from the powerstrip with a 3-foot 
> length with glass fuse holders in each leg.  I also adjusted the power 
> supply to 14.50V at rest.  The K3S now shows 14.2V at rest.  At 100W 
> TX the K3S shows 13.2V, so a 1 volt drop.  Way too much.
>
> The power supply voltage measured at the terminals drops from 14.50 to
> 14.44 for full power TX.  This seems too much, I had read the drop 
> should be no more than 0.01V and this is 0.06V.
>
> So, suspecting the in line fuse holders I made up another cable with 
> dual blade-fuse holders, which was worse.  TX voltage on the K3S 
> display dropped to 12.9V.
>
> I'm suspecting my power supply is to blame - it's a TenTec 963, a 
> re-branded Astron SS-30.  Alternatively, I have another commercial 
> power cable with fuse holders I can cut down and try.
>
> Many thanks for all the help both here on the reflector and the direct 
> emails from several fellows, and to Rich VE3KI for the on-air tests 
> this morning!
>
> 73 de Chuck, WS1L
>

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Re: [Elecraft] K4 S-meter characteristics

[Charlie T]

S-meters should be calibrated with 9 signal levels:   

*Faint - Signal barely perceptible
*Very weak signals
*Weak signals
*Fair signals
*Fairly good signals
*Good signals
*Moderately strong signals
*Strong signals
*Extremely strong signals

(Reprinted from the 1947 ARRL Handbook, page 466 "RST System of Signal Reports")

73, Charlie k3ICH



-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of John Stengrevics
Sent: Friday, April 24, 2020 7:49 AM
To: Morgan Bailey 
Cc: Elecraft@mailman.qth.net
Subject: Re: [Elecraft] K4 S-meter characteristics

Agree completely.  I find all S meters to be totally inaccurate and next to 
useless, including my K3S’.  

> On Apr 24, 2020, at 7:43 AM, Morgan Bailey  wrote:
> 
> Maybe it is just me but, Turn the radio on, adjust the audio/rf/agc 
> controls, hear the station, work him, move on. I dont need a fancy dbm 
> or an iconic number of engineering controls, to say what the dbm was 
> when I worked the guy. When you contest, who the hell cares, hear him, 
> work him, move on. In simple terms, I just want selectivity, and no 
> agc pumping and no front in desensing from a 40 db over nine station 2khz 
> away.
> 
> Im looking forward to a quiet front end, that keeps me from having to 
> listen to 48 hours of static that is generated by the stages with in 
> the radio. Love my K3S, great radio. Simple to operate once you learn 
> its controls and never has failed me.
> 
> Looking forward to K4 delivery.
> 
> Vy 73,
> Morgan Bailey NJ8M
> 
> 


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Re: [Elecraft] Latest on the new home for my K3...

[Charlie T]

Also, you can buy multi-colored electrical tape at the typical home stores.
I use that to color code antennas by band (s), polarity & directionality.
The colors closest to the connector is/are the band or bands with the wrap
farthest from the connector one of four possibilities:
Beam Vertical, beam horizontal, omni-vertical or omni horizontal.

And yes I often have to look at the chart of what means what, but then I
know exactly what antenna feed I've got in my hand.

73, Charlie k3ICH

 
 

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Re: [Elecraft] KAT4

[Charlie T]

Well this MAY be a valid question, since I believe for example, the IC-7300 
and/or  IC-7610 have an "emergency" mode where the power is cut back to 50 
watts and the allowable tuner's SWR range is extended from its normal full 
power mismatch capability.
If I remember correctly, its only 3:1 at 100 W, but will match an "emergency" 
use antenna if you have to.

10: 1 capability DOES put some hefty restraints on an internal tuner.

73, Charlie k3ICH




-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of David Bunte
Sent: Monday, April 20, 2020 9:03 AM
To: Charles Sells 
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KAT4

Charles -

I don't "know" what the power handling capabilities are, but think I can safely 
assume that if it is in the K4 it can handle the power of the K4. I trust that 
Wayne, Eric, or someone else who "knows" the answer will chime in when they are 
able.

73 de Dave - K9FN

On Mon, Apr 20, 2020 at 8:25 AM Charles Sells 
wrote:

> I can see from the literature that is on the website that the KAT4 ATU 
> will handle a 10:1 matching range but don’t see what the power 
> handling capabilities are.
>
> Anyone know?
>
> 73
> Charles
> W4PPP
>
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Re: [Elecraft] ECN time change in effect

[Charlie T]

Good thinking.
The Collins Collectors Assn. net has been on 14.263 @ 2000Z for many years.

Sticking with UTC is the only option that makes sense unless a net is strictly 
local as on 2M FM for example.

73, Charlie k3ICH




-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of kevinr
Sent: Sunday, March 08, 2020 1:34 AM
To: Elecraft Reflector 
Subject: [Elecraft] ECN time change in effect

A little errata: Daylight Savings Time once again caught me unaware.

Since the bands have been favorable to us the last few weeks I think we should 
not really change.

The local times will change while UTC will remain the same like last year.  If 
the sun ever awakens we'll reassess the net times.


Please join us on (or near):

14050 kHz at 2200z Sunday (3 PM PDT Sunday)
   7047 kHz at z Monday (5 PM PDT Sunday)

73,
   Kevin. KD5ONS


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Re: [Elecraft] K4 on AM

[Charlie T]

I think he "may" be confusing the high audio limit with the resulting 2X 
bandwidth.

6kHz transmit bandwidth is obviously NOT the result of 6 KHz audio.

However, it is easy to get mixed up on this.

Charlie k3ICH




-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Rose
Sent: Monday, March 02, 2020 4:30 PM
To: David Gilbert 
Cc: Elecraft Reflector 
Subject: Re: [Elecraft] K4 on AM

Well said, Dave

73

K0PP


On Mon, Mar 2, 2020, 14:23 David Gilbert  wrote:

>
> Well, when a minority few seem to think that they should be special 
> enough to use far more bandwidth than the rest of us do, then I'd say 
> the horse isn't dead yet.  If everyone ran AM that wide that the bands 
> would sound horrible.  If that isn't a good enough definition of 
> presumed entitlement I don't know what is.
>
> Why Elecraft is willing to enable people to use 10 KHz of bandwidth 
> for no good communication reason is beyond me.  It would certainly 
> make me think thrice about supporting a K4.
>
> And Joe didn't bring up the subject ... you and W2XJ did.
>
> Dave   AB7E
>
>
>
> On 3/2/2020 1:13 PM, Grant Youngman wrote:
> > smh … :-(
> >
> > Why did I know this would happen?  Do we really have to keep beating
> this same tired horse? Really?
> >
> > Grant NQ5T
> >
> >> On Mar 2, 2020, at 3:06 PM, Joe Subich, W4TV  wrote:
> >>
> >> On 2020-03-02 11:34 AM, Grant Youngman wrote:
> >>> A maximum around 6 KHz would be better,
> >> Audio response greater than 3 KHz is *never* appropriate for 
> >> amateur radio.  Amateur radio is, after all, a communications 
> >> service not an entertainment medium.
> >>
> >> As a certain FCC official said in a hamfest forum a few  years ago, 
> >> "if you want more than 3 KHz, get a *BROADCAST* license."
> >>
> >> 73,
> >>
> >>... Joe, W4TV
>
>
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Re: [Elecraft] K4 on-air testing, etc.

[Charlie T]

I'm guessing there's no new info on the K4 kit version yet.

73, Charlie k3ICH




-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Paul Van Dyke
Sent: Tuesday, January 14, 2020 9:27 PM
To: Wayne Burdick 
Cc: Elecraft Reflector 
Subject: Re: [Elecraft] K4 on-air testing, etc.

Thank you Wayne
Looking for it to arrive (along with 1000's of others)

Paul - KB9AVO/KP2
chasing from the beach on St Thomas
KX3 #24, KXPA #22 on A123 batteries

On Tue, Jan 14, 2020 at 9:51 PM Wayne Burdick  wrote:

> Hi all,
>
> We've been making contacts with our K4s as often as possible, often in 
> conjunction with checkout of new software. But the Elecraft CW an SSB 
> nets are another great resource that we've been overlooking. We'll be 
> getting on these nets frequently in the future.
>
> Also note that we're going to start releasing K4 operational screen 
> shots as part of a newsletter series that begins soon. The intent is 
> both to inform potential users about how things work and to solicit 
> additional feedback.
>
> 73,
> Wayne
> N6KR
>
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Re: [Elecraft] Learning Morse Code

[Charlie T]

For some interesting reading on age related hearing/comprehension, search
for:
 
"Phonemic Regression Syndrome"  (NOT a joke !)

A quote from one of the pages:" In a "nutshell, these impairments are
certainly characteristic of a central auditory processing disorder. We've
all heard the term "phonemic regression" defined as a disproportionate
inability to understand what others are saying when compared to the
individual's degree of hearing loss."

Typically, an audiologist at your favorite hearing center can test you for
this.
It's quite depressing to consider this coming on.

It basically affects audible speech, but MAY affect Morse copy as well.

73, Charlie k3ICH

 


-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Barry
Sent: Sunday, December 29, 2019 8:06 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Learning Morse Code

Jim Brown-10 wrote
> CW contesting is also great for building CW copying skills.
> 
> 73, Jim K9YC

Yup.  Like the old joke, "How do you get to Carnegie Hall?"  Practice!

I also suspect age has a lot to do with it.  I was licensed at 12.  Upgraded
at 13, but couldn't afford a SSB radio for 2-3 years, so did CW only.  Found
the QRQ guys (in the early 70s) at the low end of 40 CW and programs were
available, I found I hit a wall at ~100 WPM, despite practice.  Other than
contesting, I really haven't been active for the last 5-10 years and my
speed has significantly dropped.

Barry W2UP






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Sent from: http://elecraft.365791.n2.nabble.com/
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Re: [Elecraft] Johnson SpeedX printed Morse

[Charlie T]

OH, yeah.I can see it in front of me now, a little Johnson SpeedX Morse 
Code chart.
WORST thing I could possibly have usedYUGE plateau at 7 WPM !

Curiously, when working for Microlog ( the OLD one in Gaithersburg MD), we had 
a contract to make a video/keyboard automated Morse Code instruction machine 
for X gubmint agency.
They KNEW how to teach code and just wanted to automate it.
The key was that they STARTED with the hard letters FIRST, a four letter group 
with, if my memory serves me, PQXJ, or something like that with letters 
consisting of FOUR dit/dah combinations.
They did NOT start with E, T, I  & M.
Their logic was that it prevented the student from changing their perception as 
a "long" character is received. for example, if a "J"  is received, is it E, or 
A, or W, or J?

I can tell you, it WORKED. My son learned the whole Morse alphabet by sound 
(The machine sent at 15 WPM character rate too.) in under three hours total,  
broken up into 10 to 15 minute sessions.
Today he is KB4WVI.

73, Charlie k3ICH






-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Wes
Sent: Thursday, December 26, 2019 2:57 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Reaching Across the Chronological Divide

Please don't let him learn code by sight.  I taught myself from the list in my 
Boy Scout Handbook (still have it)  and I've never overcome doing it the wrong 
way. Passed a 20 WPM Extra exam but it was a struggle.  Still my favorite mode 
though.

Wes  N7WS

 

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Re: [Elecraft] K4 YouTube Video List by Date

[Charlie T]

I don't understand the paradigm that the K4 is WAY more expensive than the K3s.
If you outfit a K3s with everything that is included for example, in a K4D, I 
believe you'll find the K3s package is actually MORE expensive than the K4D.
Don't forget to include:   The P3, + transmit monitor, +  VGA output option 
(more modern HDMI on the K4 ).

73, Charlie k3ICH



 

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Re: [Elecraft] THE FUTURE OF OUR HOBBY

[Charlie T]

Note to Wayne & Eric that an inexpensive entry level transceiver might find
market with newcomers on tight budgets (eg the K1, etc.); something other
than a VHF HT.  KX2/KX3 are still a bit much for the college student or
newly graduated worker.

73, Ed - KL7UW


That's probably what the current non "S" version of the K3 will evolve into.
Maybe even the K3s too with the introduction of the K4.

73, Charlie k3ICH

 

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Re: [Elecraft] KPA-1500 failing

[Charlie T]

I would request that any solution one finds for their KPA-1500 failing, be
posted on this forum, even if it's (typically like me) cockpit error.
We have seen many "My KPA-1500 died" listings. 
These are obviously quite disconcerting to us potential buyers (again like
me).
 
Often, the original poster later replies that a squirrel, or something ate
the coax or,  got fried across the feed point, etc.,  completely exonerating
Elecraft (whew !).

Occasionally it IS a production fault that is fixed (promptly) under
warranty.

PLEASE let us know about the fix and don't leave us hanging.

73, Charlie k3ICH



 

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[Elecraft] FW: Special BNC adapter/barrel

[Charlie T]

Subject: Special BNC adapter/barrel



I have available, a small quantity of a very useful, but slightly different  
BNC "T" connectors.
Just picture a normal BNC "T", but with the male end swapped with the one of 
the female ends.

What makes this useful is that with the male end plugged into your K2/K3, a 
right female points up for your loaded whip, AND the other female, straight 
across from the radio's connector can have a  BNC to two pole banana adapter 
for easy connection of a counter-poise or ground wire.

Another great use is for a scope probe connection.  The probe attaches to the 
straight thru terminal with a right angle (down)  jumper to say, a frequency 
counter sitting on top the scope.  This can be accomplished with a normal BNC 
"T", but with both the probe AND counter connections at right angles to the 
scope itself, it's to say the least awkward.

I can supply these at $10, shipped anywhere is the US.

73, Charlie k3ICH





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Re: [Elecraft] Cammo KX2? (Was: Copy cat - no way)

[Charlie T]

Only the official "CD" portable/mobile and base station Gonsets were yellow
and had the traditional  R/W/B Civil Defense triangle logo on them.
I don't believe they were available to the general public.
The first two Gonset Communicators portable & base, were gray hammertone and
the third generation was white, with blue/gray knobs, very nice looking too.

73, Charlie k3ICH

-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Phil Kane
Sent: Wednesday, September 04, 2019 5:40 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Cammo KX2? (Was: Copy cat - no way)

On 9/4/2019 6:41 AM, Bob N3MNT wrote:

> The specific patterns in Camo fabric are copyrighted but not the
technique. 

One of our friends has three kids who are US Naval officers.  She made a
significant comment on the dark grey and black cammo pattern that the Navy
uses - it makes it very easy for someone overboard to not be sighted!  :)

If I remember the Gonset "Gooney Bird" transceivers of the 1950s, they were
bright yellow, but safety orange is my all-time favorite.

73 de K2ASP - Phil Kane
Elecraft K2/100   s/n 5402

>From a Clearing in the Silicon Forest
Beaverton (Washington County) Oregon
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Re: [Elecraft] Copy cat - no way

[Charlie T]

Well, it IS some significant competition, especially since the "PX3" is 
built-in eh?


Charlie k3ICH




-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of JR
Sent: Saturday, August 31, 2019 2:37 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Copy cat - no way



On 8/31/2019 1:21 PM, elecraft-requ...@mailman.qth.net wrote:
> New Icom IC-705, a QRP IC-7300.
>
> With a very KX'y form factor.
_

Oh pshaw.  That is quite a stretch, and I do not see it, myself. Other than the 
basic shape (a rectangular box)  and handle brackets (which I think are 
optional on a KS3,)  it does not look like a KX3 (not to me,
anyway.)  Besides, several other QRP rigs have that same basic shape. The 
screen bears no meaningful resemblance, and it consumes most of the front 
panel.  You are working to hard  for some reason.

Just MY take.   Your mileage may differ.K8JHR









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Re: [Elecraft] K3 & K3S for sale

[Charlie T]

I suspect in a strong signal Field-Day or contest environment,  the K3S will
still outperform all versions of the K4 except the high-end K4HD.

73, Charlie k3ICH




-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Buck
Sent: Tuesday, August 27, 2019 9:51 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 & K3S for sale

Don't sell the K3 short.  The basic K3 is still one of the finest radios
ever made and the difference between it and newer radios is hardly
noticeable to the human ear.

k4ia, Buck
K3# 101
Honor Roll  8B DXCC
EasyWayHamBooks.com

On 8/26/2019 8:56 PM, Bob McGraw K4TAX wrote:
> I'm keeping my K3S.I'll decide on a K4 next year.
> 
> Bob, K4TAX
> 
> 
> Sent from my iPhone
> 
>> On Aug 26, 2019, at 5:33 PM, Charlie T  wrote:
>>
>> Obviously, a lot of us are dumping our K3's (plural) & K3S' (also plural)
as their prices have fallen through the floor with the introduction of the
K4.
>> (Can't say I'm thrilled about THAT, but it IS inevitable as new 
>> models are introduced.)
>>
>> However, a lot of the 'for sale' listings cleverly try to sneak the "S"
onto the model number, or imply that it is a K3S when the radio really is
NOT a K3S.
>> Bear in mind, if your radio does not show K3S on the front panel, it is a
K3, albeit upgraded, but  NOT a K3S.
>>
>> The new synthesizer boards will improve performance, but there are some
subtle differences between a K3 and a K3S that no amount of updating with
new boards or mods can change.
>>
>> While the K3 concept of buying a newer "upgraded" synthesizer board for
example,  rather than a new radio sounds like a great idea which will surely
change the performance, I feel it is NOT a feasible solution, as it
generates a worthless board that is only good as a pistol target.
>> My particular course of action was to sell my K3 after I had taken out
what ever options I could add to a new K3S.
>> That way, I get the latest production changes (note, there ARE a number
of them pertinent ONLY to the K3S) and,  no junk boards are generated.
>>
>> Too bad I can't do the same thing with the K4.
>> (Got a nice bullet here I'm about to bite on !)
>>
>> 73, Charlie k3ICH
>>
>>
>>
>>
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> 
> 
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[Elecraft] K3 & K3S for sale

[Charlie T]

Obviously, a lot of us are dumping our K3's (plural) & K3S' (also plural) as 
their prices have fallen through the floor with the introduction of the K4.
(Can't say I'm thrilled about THAT, but it IS inevitable as new models are 
introduced.)

However, a lot of the 'for sale' listings cleverly try to sneak the "S" onto 
the model number, or imply that it is a K3S when the radio really is NOT a K3S.
Bear in mind, if your radio does not show K3S on the front panel, it is a K3, 
albeit upgraded, but  NOT a K3S.

The new synthesizer boards will improve performance, but there are some subtle 
differences between a K3 and a K3S that no amount of updating with new boards 
or mods can change. 

While the K3 concept of buying a newer "upgraded" synthesizer board for 
example,  rather than a new radio sounds like a great idea which will surely 
change the performance, I feel it is NOT a feasible solution, as it generates a 
worthless board that is only good as a pistol target.
My particular course of action was to sell my K3 after I had taken out what 
ever options I could add to a new K3S.  
That way, I get the latest production changes (note, there ARE a number of them 
pertinent ONLY to the K3S) and,  no junk boards are generated. 

Too bad I can't do the same thing with the K4.
(Got a nice bullet here I'm about to bite on !)

73, Charlie k3ICH




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[Elecraft] K3 options compatible with K4D

[Charlie T]

Sorry if this has been already answered, but are there any K3/K3S options that 
are compatible with the K4?

For example, should I keep the transmit monitor board and sensor?

73, Charlie k3ICH



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Re: [Elecraft] 73.CNC black K3 knob

[Charlie T]

I have one of the original 73.CNC machined main tuning knobs for the K3 in
black.

It's in perfect shape. I will ship it in the US for $95.

73, Charlie k3ICH




-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Michael Raskin
Sent: Saturday, August 10, 2019 10:13 AM
To: elecraft@mailman.qth.net
Subject: [Elecraft] K3 knobs are sold


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[Elecraft] Special BNC adapter/barrel

[Charlie T]

I have available, a small quantity of a very useful, but slightly different  
BNC "T" connectors.
Just picture a normal BNC "T", but with the male end swapped with the one of 
the female ends.

What makes this useful is that with the male end plugged into your K2/K3, a 
right female points up for your loaded whip, AND the other female, straight 
across from the radio's connector can have a  BNC to two pole banana adapter 
for easy connection of a counter-poise or ground wire.

I can supply these at $10, shipped anywhere is the US.

73, Charlie k3ICH





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Re: [Elecraft] [Way (OT)] Pedantic comment about metric usage

[Charlie T]

If a megameter is 1000 kilometers, what is a trigometer ?

73, Charlie k3ICH




-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Bill Frantz
Sent: Tuesday, July 30, 2019 11:48 AM
To: Elecraft 
Subject: [Elecraft] [Way (OT)] Pedantic comment about metric usage

Since I'm studying to be a curmudgeon... :-)

A recent post mentioned a 8300mAh battery*. That should have been written as
an 8.3AH battery. Also we should be dealing in bels, not decibels,
megameters instead of thousands of kilometers etc.

73 Bill AE6JV

* Reference deleted to protect the guilty.

---
Bill Frantz| Privacy is dead, get over| Periwinkle
(408)356-8506  | it.  | 16345 
Englewood Ave
www.pwpconsult.com |  - Scott McNealy | Los Gatos, 
CA 95032

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Re: [Elecraft] Dummy Load recommendation

[Charlie T]

The secret to using wire-wound resistors for a 50Ω load is to use a lot of them 
in parallel as the inductance divides just as the value does for the number of 
resistors.
Of course, this is only reasonable if you already have a pawful to start with.  
Otherwise, RF rated, big 50Ω non-inductive resistors are available from many 
sources.
I had a lot of 1200 Ω, 10 watt (light blue??) wire-wound resistors, so 24 of 
them between two pieces of G-10 made a decent HF dummy load with a good safety 
factor at 100 watts.

Another handy load, is one that will show 2:1 (100Ω) or 3:1 (150Ω) SWR.  It 
wouldn't have to take much power as you'd only be using it to check an SWR 
readout, etc.
I made a few out of a couple 2W resistors. They'll take reasonable power for a 
very short  (½ second??) check time.

73, Charlie k3ICH



-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of CUTTER DAVID via Elecraft
Sent: Tuesday, July 23, 2019 6:44 AM
To: hawley, charles j jr ; Art Nienhouse 

Cc: Elecraft@mailman.qth.net
Subject: Re: [Elecraft] Dummy Load recommendation)

I often wonder just how useful a precision dummy load really is in the amateur 
service.  I picked up home brew dummy load at the club the other day.  It 
measured 57ohms dc and comprises 4 wire-wound resistors attached in a cluster 
across the end of the coax.  After lots of disparaging remarks I put it on the 
VNA and it didn't look at all bad out to 30MHz: nothing over 1.5:1 and no 
spikes or dips to indicate resonances. I'll have to do it again and make a 
print-out for posterity. 
I've heard that salt water in a bucket works after a fashion.  
So the question is: how good do you need it to be?
David G3UNA 

 

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Re: [Elecraft] Feature Request: Shifting VFO

[Charlie T]

I used to like that feature with the Icom's, but touch-screens make it
redundant now.

73, Charlie k3ICH




-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Don Wilhelm
Sent: Saturday, July 20, 2019 1:48 PM
To: Kevin, N4TT ; Elecraft Reflector Reflector

Subject: Re: [Elecraft] Feature Request: Shifting VFO

Kev and all,

No vote on that dynamic VFO tuning for me.  It would only be suitable for me
if I could turn it off.
I have used a couple transceivers that had that type of tuning and it drove
me nuts.

73,
Don W3FPR

On 7/20/2019 1:38 PM, Kevin, N4TT wrote:
> Consider one of the settings for your computer mouse is shifting 
> resolution. This allows you to move the mouse real fast to get from 
> one end of three monitors to the other. And then, when you slow down, 
> the mouse goes into micro-resolution mode and you can be very precise 
> in your movements. This may be a Logitech feature.
> 
> I was thinking the same concept could be used for the VFO. I'm 
> familiar with the Fine/Course and RATE buttons but I was thinking 
> (danger Will
> Robinson) that it would be nice to quickly shift to the next RTTY 
> signal and then automatically switch to the FINE selection based on 
> how fast you turn the VFO.
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Re: [Elecraft] new dead K3s still not fixed

[Charlie T]

Just to be clear, were these two radios recently purchased directly from
Elecraft, or were they "pre-owned" when you bought them?

73, Charlie k3ICH



-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of KD7PY
Sent: Wednesday, June 19, 2019 11:19 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] new dead K3s still not fixed

 sorry thats a K3s in kit form. not a K3,   

Ed



--
Sent from: http://elecraft.365791.n2.nabble.com/
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Re: [Elecraft] Silent power supply for a K3s

[Charlie T]

Any supply that is regulated, whether a switching or linear regulator
circuit is used, has the potential to "take-out" the radio because if the
regulating circuit fails, the un-regulated voltage which is normally
significantly higher than the regulated voltage will be applied to the
radio. In a 12 - 14 V supply, this could very well damage anything it is
connected to, from a simple 12V light bulb to your fancy new SS radio.

That said, many good quality commercial power supplies have what is called a
"crow-bar" circuit which is essentially a big SCR across the supply's
output, with its gate driven by a voltage sensing circuit set a level
slightly higher than the supply's normal output, say 16V. The action is if
the regulator fails, the sensing circuit fires the SCR, which is hopefully
big enough to effectively short the power supply's output and ether trigger
a fold-back current limiting * circuit, or blow a fuse.


73, Charlie k3ICH

*Unfortunately, in many supplies, the current limiter AND voltage regulator
use the same active device, so in a fault situation, blowing the fuse is the
last resort to a safe shut down.

-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Bert
Sent: Monday, June 10, 2019 12:16 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Silent power supply for a K3s

How would a switched PS take out a radio?

Bert VE3NR



On 6/9/2019 11:40 PM, Jim - N4ST wrote:
> I don't know how common it is, but eHam lists several failures of the 
> MFJ-4230MV supply that took out the rig attached to it.
> Looking at the reviews they are pretty much a 5 (love it) or a 0 (it 
> smoked my rig when it failed).
>
> 
> 73,
> Jim - N4ST
>
>
> -Original Message-
> From: elecraft-boun...@mailman.qth.net 
>  On Behalf Of Richard Zalewski
> Sent: Sunday, June 9, 2019 19:53
> To: Leroy Buller 
> Cc: Elecraft Reflector 
> Subject: Re: [Elecraft] Silent power supply for a K3s
>
> I did two of the Samlex and returned them both.  The fan problem drove 
> me crazy.  I replaced it with a MFJ-4230MV and love it.  Quiet cool 
> and good metering.
>
> Richard
> *W7ZR* ex:5C5Z, CN2ZR, K2JSP, W6SBZ, W7KXR, K9ZIJ, W9KNF, W0KDF, 
> W0MQU, J68ZR, KC6ZR, PJ4/W7ZR, KH2,W7ZR, KH6/W7ZR, V31ZR, VK4AAZ, 
> XE2DV
>
>
> *Be joyful in hope, patient in affliction, faithful in prayer*
>
> __
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> ve...@bell.net

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Re: [Elecraft] P3 Noise band

[Charlie T]

I've seen that "tracking" type spurious display too, especially when using my 
old  222 MHz or 432MHz  MicroWave Modules transverters and also the internal 2M 
Elecraft K3 unit.

73, Charlie k3ICH


-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Bob McGraw K4TAX
Sent: Saturday, June 08, 2019 5:57 PM
To: Elecraft Reflector 
Subject: [Elecraft] P3 Noise band

I noticed when working the 6M contest today, I observed a band of noise on my 
P3.   It always tracks above the frequency about 20kHz at the lower edge.   The 
width of the band of noise is about 35 kHz.   As I tune, the band of noise 
stays relative to the tuned frequency, thus moving up or down as I tune.The 
amplitude of the band of noise is about 10 dB above the noise floor or about 
-125 db as shown on the P3. I've noted that it exists on both the yagi and the 
dummy load.

I've changed the input cable between the P3 and K3S, no change. When I 
disconnect the cable from the K3S the band of noise is not evident.  It doesn't 
cause me any issues, just noticed it.   Makes my go hu?

Any clues?

73

Bob, K4TAX


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Re: [Elecraft] Elecraft K4 H D

[Charlie T]

What exactly does the Superhet Module added to a K4D actually do?
It's obviously a desirable improvement add-on, but that's about all I know.

I must have missed the explanation if it was provided.

73, Charlie k3ICH






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Re: [Elecraft] Elecraft IC-7610,

[Charlie T]

No, you didn’t miss anything.

No one “said” I should do anything.

 

However, it’s obvious to me that the K4 is basically an IC7610 on muscle 
building steroids and probably has an infusion of alien technology (new stuff, 
not the old 1947 Roswell cache).

 

There are features and performance that far exceed the Icom’s capabilities.

Even though, on the surface, they “look” somewhat alike.

My question (only to myself, but rhetorically stated) is should I make the 
switch?

 

73, Charlie k3ICH

 

 

 

 

From: David Bunte  
Sent: Monday, May 20, 2019 2:38 PM
To: pin...@erols.com
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Elecraft IC-7610,

 

Charlie -

 

I have not read EVERYTHING in this thread... but I sure don’t recall anyone 
saying you should get rid of your IC-7610. 

 

Maybe I missed something. 

 

Dave - K9FN

 

 

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Re: [Elecraft] K4HD

[Charlie T]

That reminds me of a joke that went around in the 40's about a guy named 
"Franklin Delano (bad word)".
When he wanted to legally have his name changed, he was asked what he wanted, 
since the one he had was not too desirable.

He replied, "Just plain old 'Joe (bad word)'".

Who'll be the first to apply for K4HD?
That'll be like a tattoo with your current girl-friends name.
Curiously, K5HD is already taken.

73, Charlie k3ICH






-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Wes
Sent: Sunday, May 19, 2019 4:44 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K4HD

I was going to ask whether K4HD gets a free one, but he's an SK.

Wes  N7WS



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Re: [Elecraft] KPA1500 AC Mains wire colours

[Charlie T]

AAARRRGHH, I almost flunked out of engineering school on all that Delta/Wye
and conversion stuff !
Curiously, I sailed through the 1st two quarters where DC circuits & Ohm's
law was taught.
Hey, I had my ham licenseI KNEW all this stuff already...HAH.  3Ø AC
theory just about did me in.

To this day, I don't believe I have EVER had the need for a Laplace
transform though.

73, Charlie k3ICH






-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Phil Kane
Sent: Sunday, May 19, 2019 2:14 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KPA1500 AC Mains wire colours

On 5/19/2019 6:04 AM, hawley, charles j jr wrote:

> BTW, I think if instead of saying "phases", it would be less confusing 
> to say two "legs" plus neutral for the single phase 240 vac coming 
> into the house.

As an electrical engineer whose major was "power" (back when it was actually
taught) I would agree wholeheartedly.  The "2 hot plus neutral"
is most often a single phase of a three-phase delta 240V secondary with
tapped center as "neutral".  It could not be two phases of a wye because the
voltage from phase to phase would then be 208V for 120V phase-to-neutral.

73 de K2ASP - Phil Kane
Elecraft K2/100   s/n 5402

>From a Clearing in the Silicon Forest
Beaverton (Washington County) Oregon
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Re: [Elecraft] K4 - VHF/UHF

[Charlie T]

Actually, I need to correct myself.  The FT-726 DID have space for two
optional modules because it only came with the 2M  band.
Curiously, you needed TWO modules to cover the whole ¾M band.
One covered from 430 to 440 MHz and a different one covered from 440 to 450
MHz.

73, Charlie k3ICH




-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Charlie T
Sent: Friday, May 10, 2019 11:30 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K4 - VHF/UHF

No, it only had space for ONE extra module.
You're thinking of the FT-736R

C


-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of qr...@roadrunner.com
Sent: Friday, May 10, 2019 6:33 PM
To: Dave New, N8SBE 
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K4 - VHF/UHF

It also had a 435 MHz module, with space for two more.  It was ready for
satellite use from the factory.

72

Howard Kraus, K2UD
 "Dave New wrote: 
> That's a Yaesu FT-726r
> 
> It came with a 2m module, and had space for two more.
> 
> Haven't seen anything like it since.
> 
> 73,
> 
> -- Dave, N8SBE
> 
>  Original Message 
> Subject: Re: [Elecraft] K4 - VHF/UHF
> From: Harry Yingst via Elecraft 
> Date: Tue, May 07, 2019 1:18 pm
> To: elecraft@mailman.qth.net
> 
>  At one point I considered buying a second K3 and installingsmall 
> transverters where the 100w PA would typically go.
> 
> I would like to see a matching box that had Transvertermodules that 
> you could insert for the various bands.
> 
> 
> 
> 
>  On Monday, May 6, 2019, 4:21:27 PM EDT,  wrote:
> 
>  Will there ever be a VHF/UHF radio? I'm sure because of the cost 
> factor there would a limitation. The interest would be the next 
> question. Had to ask...
> 
> Brian
> K1DIH
> 
> __
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Re: [Elecraft] K4 - VHF/UHF

[Charlie T]

No, it only had space for ONE extra module.
You're thinking of the FT-736R

C


-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of qr...@roadrunner.com
Sent: Friday, May 10, 2019 6:33 PM
To: Dave New, N8SBE 
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K4 - VHF/UHF

It also had a 435 MHz module, with space for two more.  It was ready for
satellite use from the factory.

72

Howard Kraus, K2UD
 "Dave New wrote: 
> That's a Yaesu FT-726r
> 
> It came with a 2m module, and had space for two more.
> 
> Haven't seen anything like it since.
> 
> 73,
> 
> -- Dave, N8SBE
> 
>  Original Message 
> Subject: Re: [Elecraft] K4 - VHF/UHF
> From: Harry Yingst via Elecraft 
> Date: Tue, May 07, 2019 1:18 pm
> To: elecraft@mailman.qth.net
> 
>  At one point I considered buying a second K3 and installingsmall 
> transverters where the 100w PA would typically go.
> 
> I would like to see a matching box that had Transvertermodules that 
> you could insert for the various bands.
> 
> 
> 
> 
>  On Monday, May 6, 2019, 4:21:27 PM EDT,  wrote:
> 
>  Will there ever be a VHF/UHF radio? I'm sure because of the cost 
> factor there would a limitation. The interest would be the next 
> question. Had to ask...
> 
> Brian
> K1DIH
> 
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[Elecraft] Mobile high power

[Charlie T]

Has anyone considered the liability of running very high power mobile?
What if you're running a KW, and gave a call on 20M.  Suddenly,  the guys
brakes in the vehicle next to you locked up causing a multiple vehicle
crash?
I realize this is an extremely hypothetical and unlikely case, but these
smart vehicle computer systems can't be all THAT immune to all sorts of RFI.

I know the cruise control my 2000 Dakota would mysteriously jump 5 MPH if I
keyed up with only 25 watts on 222MHz. 
It would return to it's previous setting when I un-keyed.   VERY
disconcerting eh?

73, Charlie k3ICH



This begs the question: Why KX3s with KPA500s? That is what I use in my
mobile station and it provides about 250W due to the FCC amplifier gain
requirements. I am fine with it, as that is what I have and higher power may
affect the vehicle. I have seen someone post a modification to remove an
attenuator in the amp and recalibrate the power meter, but I would assume
that Elecraft will not be allowed to do that, as the FCC Cert holder.

73,

Mark
W7MLG
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Re: [Elecraft] Cinch Jones Connectors

[Charlie T]

There is an easy locking device that can be added to any Cinch-Jones
connector.
The ones used on the older Yaesu radios had this device included.
You would have to practically destroy the chassis to get them apart if you
didn't squeeze it properly to dis-engage the lock.

Much tighter and higher current rating than those Anderson power poles
everyone seems to have fallen for.

73, Charlie k3ICH




-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Fred Jensen
Sent: Friday, April 19, 2019 2:29 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Cinch Jones Connectors

Because they are not locking and will separate if pulled, on more than once
occasion while I was snarfing around behind the desk and got my foot tangled
up in all the "wireless" down there, I did not pull the TX off the desk.
[:-)

73,
Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County

On 4/18/2019 2:28 PM, Phil Kane wrote:
> I like them because I can get my arthritic hands around them and in 
> thedays when a soldering iron was not a "weapon of mass destruction"
> in myhands they were so easy to solder wires to.--
> 73 de K2ASP - Phil Kane Elecraft K2/100 s/n 5402
>
>

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Re: [Elecraft] Tinnitus and the K3 RX EQ and Related Variables

[Charlie T]

I'll second the Costco recommendation.

That said, their resident audiologist told me flat out, even the best will
not make your ears suddenly 16 years old again.
They can do wonders, but don't expect them to be perfect.

He has tweaked mine a couple times over the years for minor improvements and
I have to choose their program (blue-tooth link to phone)  depending on my
environment, home, in a crowd,  listening to music, etc.

I will say that they make a yuge difference and offer some advice to you
"younger" guystake care of your ears.
If you're running a chain saw or a lawn mower (or playing lead guitar in a
metal band), WEAR EAR PROTECTION.

For years, I didn't and I am now paying the price.
(Well, maybe not the metal band part...but as they used to say, "If the
music's too loud, you're too old", which is NOT the best advice for your
ears.)

73, Charlie k3ICH








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Re: [Elecraft] Touch Screens

[Charlie T]

Well, I was all set to really HATE touch screensBUT, I find the one on
the IC-7610 a breeze to use.
Admittedly, I do (seldom) "fat-finger" it, but so far, I've never screwed up
anything that didn't take but one more "touch" to fix.

The whole operation of the touch-screen on the IC-7610 is just fine with me.
Often used functions are readily available with two "touches" at most.

Seldom needed things may require moving to a separate menu.

Personally, I am very comfortable with it.
An YES, I DO also own a K3s & KX2.

Each have their pro & con points.

73, Charlie k3ICH




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Re: [Elecraft] Will there be a K4

[Charlie T]

Is this some sort of covert program to cut-off or, at the very least, slow down 
the current K3s sales as more potential buyers are convinced to change their 
minds and decide to wait for the K4 ?

Because it certainly SEEMS to me to be doing just that!

Personally, at around six large for a loaded K3s, there's NO way I'm gonna 
spend anywhere near twice that on a K4 radio regardless of WHAT it'll do.

73, Charlie k3ICH




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Re: [Elecraft] [K3] Spontaneous HI CUR, audio reduction in RX mode - UPDATE

[Charlie T]

It would also be very helpful if you can find the cause of the problem
inside the RS-20A.
There's probably more of those particular supplies and their family than any
others.
I'm fairly sure they use the old reliable "723" regulator that has been
around since it seems, Hertz experimented with sparks.

As an old sage used to offer a useful piece of advice."It's probably a
resistor or a capacitor or something".

73, Charlie k3ICH




-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Mike K8CN
Sent: Sunday, March 10, 2019 8:25 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] [K3] Spontaneous HI CUR, audio reduction in RX mode
- UPDATE

I may have found the cause of the anomalous HI CUR warning in **receive**
mode, thanks to my big orange Maine coon cat, Mr. Opie.  In rubbing his chin
on the VFO B knob while I was listening last night, he rotated the control
to the 12V DC bus voltage display, which I then noticed was oscillating
between 13.6 V and 12.7 V.  When I checked the DC bus current display, it
was oscillating between 0.4 A and 2.1 A - clearly something was amiss. 

Tonight I checked the terminal voltage on my Astron RS20-A linear supply,
and found it to be stable at 13.7 V with no load (K3 turned off), but then
it dropped to 13.4 V with the K3 'on' in receive mode.  I again checked the
K3's internal volt/ammeter readings and found the same periodic oscillation
in each one.  Curious to know if the oscillation was due to an interaction
with the supply regulator, I swapped out the RS20-A for my Astron SS-30
SMPS, which I normally use with my K2/100 setup.

Lo and behold, the DC bus oscillations ceased!  

I have not yet spent enough time listening using the alternate power supply
to know if the HI CUR warnings will also cease, but will do so over the
coming week. Fortunately, I don't have to watch the K3 display because the
HI CUR condition also reduces headphone audio substantially, which gets my
immediate attention.

Kudos to Mr. Opie for his uncanny sense of what might reveal a potential
cause of the spontaneous HI CUR warnings in receive mode.

73,
Mike, K8CN



--
Sent from: http://elecraft.365791.n2.nabble.com/
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Re: [Elecraft] Elecraft Digest, Vol 178, Issue 14

[Charlie T]

What the heyull is a " hypricrits "  ???

C


-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of silve...@charter.net
Sent: Saturday, February 16, 2019 7:04 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Elecraft Digest, Vol 178, Issue 14

Amazing isn't it Hugh? What hypricrits 


-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of elecraft-requ...@mailman.qth.net
Sent: Saturday, February 16, 2019 6:25 PM
To: elecraft@mailman.qth.net
Subject: Elecraft Digest, Vol 178, Issue 14

Send Elecraft mailing list submissions to
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To subscribe or unsubscribe via the World Wide Web, visit
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When replying, please edit your Subject line so it is more specific
than "Re: Contents of Elecraft digest..."


Today's Topics:

   1. KX3 and SDR IQ ( Spectravue) question (Viggo Magnus Nilsen Nilsen)
   2. Re: KPA1500 Failed (Dave Agsten)
   3. W8ZR Station Pro I for K3/K2 (cx...@4email.net)
   4.  KPA-1500 failed! (j...@kk9a.com)
   5. Re: KPA-1500 failed! (Bob McGraw K4TAX)
   6. Re: KPA-1500 failed! (Eric Swartz - WA6HHQ, Elecraft)
   7. Re: KPA3A Failure & related (Bob McGraw K4TAX)
   8. Re: KPA-1500 failed! (Peter Dougherty)
   9. Re: KPA-1500 failed! (Jim Brown)
  10. Re: KPA-1500 failed! (John Stengrevics)
  11. Re: KPA-1500 failed! (Wes)
  12. Re: KPA3A Failure & related (Don Wilhelm)
  13. Re: KPA-1500 failed! (Peter Dougherty)
  14. Re: KX3 and SDR IQ ( Spectravue) question (Don Wilhelm)
  15. Re: KPA-1500 failed! (Jorge Diez - CX6VM)
  16. Searching for Noise (i.e., Samples Thereof) (Wayne Burdick)
  17. Re: KPA-1500 failed! (Drew AF2Z)
  18. Re: KPA-1500 failed! (j...@kk9a.com)
  19. Re: KPA-1500 failed! (hawley, charles j jr)
  20. Re: Removing/connecting PL-259s (Don Wilhelm)


--

Message: 1
Date: Sat, 16 Feb 2019 18:03:44 +0100
From: Viggo Magnus Nilsen Nilsen 
To: elecraft@mailman.qth.net
Subject: [Elecraft] KX3 and SDR IQ ( Spectravue) question
Message-ID:

Content-Type: text/plain; charset="UTF-8"

Hello Elecrafters.,

Have some of you connected an SDR IQ to the KX3,, ( use as an Panadapter
with Spectravue) ?

Work very well with the K3

73' Viggo  LA9NEA.,

KX3,K3 and KPA500 owner.


--

Message: 2
Date: Sat, 16 Feb 2019 12:03:40 -0500
From: Dave Agsten 
To: Elecraft@mailman.qth.net
Subject: Re: [Elecraft] KPA1500 Failed
Message-ID: <556893a8-794e-4910-95b5-0af1a1fd0...@email.android.com>
Content-Type: text/plain; charset="utf-8"



--

Message: 3
Date: Sat, 16 Feb 2019 12:26:33 -0500
From: cx...@4email.net
To: elecraft@mailman.qth.net
Subject: [Elecraft] W8ZR Station Pro I for K3/K2
Message-ID: 
Content-Type: text/plain; charset=utf-8

Selling master station controller which integrates the switching and
control functions of amateur stations consisting of two transceivers (or
receiver/transmitter pairs)+ two linear amps. See
W8ZR.net/stationpro/index.htm or review in QST August 2010 for complete
description.

Handles legal limit up to 30MHz and 800w @ 54MHz. Works great with
modern and boat anchor rigs. Complete with cables and two breakout pods.
You supply 12v wall wart. Pictures on request. Shipped CONUS $285 from FL.
Tom, K2GO/HP1XT
305-767-1927


--

Message: 4
Date: Sat, 16 Feb 2019 12:35:10 -0500
From: 
To: 
Subject: [Elecraft]  KPA-1500 failed!
Message-ID: <004201d4c61d$f7dc53f0$e794fbd0$@com>
Content-Type: text/plain;   charset="us-ascii"

Sorry to hear this happen Peter, especially during a contes. LDMOS devices
are suppose to be pretty tough and the KPA1500 is not pushing their limits.
There are videos of a different LDMOS showing it to be indestructible:
https://www.youtube.com/watch?v=8ziYqjMQGEQ  Is the KPA1500 cooling and heat
sink adequate?  Personally if I owned this amp I would leave the fan on at a
tolerable speed 100% of the time.  Did you use the amp during the RTTY
contest last weekend?

John KK9A


Paul Baldock wrote: 

It sounds like one of the output devices have failed. Half power out 
is usually the indicator. A number here have reported this happening. 
It would be nice to know why this problem is occurring and if 
Elecraft are working on a fix.

- Paul
>
>On 2/16/2019 7:28 AM, lists at w2irt.net wrote:
> > I was operating in the ARRL-CW contest this morning and on 20m, with a
> > 1.2:1 SWR on the Yagi, all of a sudden I saw my power drop to about
> > 450-500W with about 40W in. Worked a few stations but not as easily as
> > when I turned everything on this morning. Switched over to phone 
> and made a few contacts.
> > Audio is fine barefoot with 100W out of the K3s-which 

Re: [Elecraft] HW-16 Re: Latest Elecraft NEWS

[Charlie T]

The first of that type was, I believe a Hallicrafters SR-75, which was quite
unique for its day.

If I remember correctly, it was basically an S-38 receiver that used the
audio output tube as a single stage crystal oscillator & RF out function.
Not what you'd call a stellar performer, but it was a first and
self-contained in a package which was same size as the S-38.

73, Charlie k3ICH




-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Kevin Anderson via Elecraft
Sent: Saturday, January 26, 2019 9:13 AM
To: elecraft@mailman.qth.net
Subject: [Elecraft] HW-16 Re: Latest Elecraft NEWS

Hopefully not to belabor this too much (or exceed a cutoff on the
conversation), the HW-16 was not a transceiver in the modern sense of shared
circuitry throughout, but was a transmitter and receiver in the same cabinet
that shared the same antenna connection and had the necessary cutoff and
receiver protections on transmitting.  The knob and dial you see is the
receiver.  The transmitter in the radio was CW-only, rock-bound on 80-40-15
meters only when barefoot with just the HW-16.  It took the external HG-10
or -10B VFO (or similar grid-keyed VFO) to get you flexible transmitting not
involving crystals.  The receiver circuitry was on a circuit board in one
half of the case and the transmitter circuitry was point-to-point wiring in
the other half of the cabinet. 

A used HW-16, joined later by a HG-10B VFO, was my first radio when I got
licensed in 1993 and used for a couple of years until it got upscaled by a
used Ten-Tec Century 22.

Cheers/73,
Kevin, K9IUA (then KB9IUA from 1993 until 1999)

---
Kevin Anderson, Dubuque IA USA, K9IUA
k9iua (at) yahoo (dot) com
---
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Re: [Elecraft] Phillips screwdrivers

[Charlie T]

I use the VESSEL brand JIS drivers for Phillips & JIS screws.

73, Charlie k3ICH

 


-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Rose
Sent: Tuesday, January 15, 2019 12:25 PM
To: Bob McGraw K4TAX 
Cc: Elecraft Reflector 
Subject: Re: [Elecraft] Phillips screwdrivers

I highly recommend "Posidriv" for most "Phillips" applications.  The sides
of the four blades are parallel.

73 !

Ken - K0PP

On Tue, Jan 15, 2019, 10:15 Bob McGraw K4TAX  Just be glad they don't use TOTSU screws typical of many Japanese
> products. i.e  the dot and slot ones.Find one of those
> screwdrivers at Harbor Freight.
>
> 73
>
> Bob, K4TAX
>
> On 1/15/2019 11:04 AM, Arthur Nienhouse wrote:
> > */Don
> > Good advice on shinny  Phillips drivers.
> >
> > Are the screws in the Elecraft products American Phillips, or JIS 
> > Japanese Industrial Standard?
> >
> > JIS which all the Japanese radios use, for my Icom radios I use a 
> > set of Hozan screw drivers to fix the Cam-Outs issue destroying the 
> > head of the screws, the difference is subtle.
> >
> > I was told years ago the fit is right if the small screw stays on 
> > the screw driver holding it vertical with out magnetism keeping it
attached.
> >
> > Regards
> > Art
> > ka9zap
> > /*
> > __
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> > Home: http://mailman.qth.net/mailman/listinfo/elecraft
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> > rmcg...@blomand.net
>
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Re: [Elecraft] Yama CM-500 Replacement

[Charlie T]

If you can find ones that fit, I highly recommend a "Velour" version rather
than the same old thin plastic that will eventually also flake off.

I have three Sony MDR-7506s' and all have Velour pads.
Once you try a set, you'll never want to go back to OEM pads.

73, Charlie k3ICH




-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Josh Fiden
Sent: Friday, January 11, 2019 3:05 PM
To: Elecraft Reflector 
Subject: Re: [Elecraft] Yama CM-500 Replacement

$5 free shipping direct from Koss, if these are the correct cushions. 

https://www.koss.com/accessories/cushions/ur20-ear-cushion

73
Josh W6XU

Sent from my mobile device

> On Jan 11, 2019, at 11:08 AM, N2TK, Tony  wrote:
> 
> I had bought ear pad replacement covers for KOSS UR20, UR30 and SB40 that
fit the CM-500 fine. I think they were $9 for a pair. It didn't take long to
replace. It is a little pain getting the three screws lined up to assemble.
> 
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Re: [Elecraft] whats a updated K3 called?

[Charlie T]

Yep, it almost as confusing as the progression of the Collins S-Line
receivers, from the 75S-1, 75S-2, 75S-3, 75S-3A, 75S-3B, and finally, the
75S-3C.

Personally, I feel the reason the K3s was not introduced as the K4, is that
they didn't want to make all the K3 owners feel like Icom buyers.
(Example: IC-756, IC-756PRO, IC-756PRO II, IC-756 PRO III, IC-7600 and now
the IC-7610.)
Not knocking Icom since I have owned each of them and understand their
product development & marketing strategy.
I currently have the IC-7610 as well as a K3s/P3/VGA and I like them both.

73, Charlie k3ICH

 




-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Don Schroder
Sent: Friday, January 11, 2019 10:57 AM
To: Rich ; elecraft@mailman.qth.net
Subject: Re: [Elecraft] whats a updated K3 called?

Hi all,



It's very obvious to me. Elecraft began with a K1, then "updated" to a K2
(which I am building). Then they "updated" to a K3, and all the new mods
that go on it. So, it's very obvious to me, that the new "updated" radio
should be called (ready for this?), THE K4 !



It naturally follows with their earlier naming scheme.



Don, KE0PVQ



Sent from Mail for Windows
10




From: elecraft-boun...@mailman.qth.net  on
behalf of Rich 
Sent: Friday, January 11, 2019 8:54:39 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] whats a updated K3 called?

OK I thought this was just a fun thing, I did not know it was actually a
serious thing.

Frankly a K3 is a K3 and a K3S is a K3S.   The difference in each radio
can vary wildly based on what the owner has installed in the radio as
far as options go.   That is the bottom line.   To me the K3S options
that are available for the K3 are nothing more than additional options.

As for making a used purchase, the SN is critical.

Rich

On 1/11/2019 9:30 AM, John K9UWA wrote:
> One would think that K3s represents multiple K3 radios. As in Plural of
K3.
>
> I am sure that it causes some confusion to many who read the Elecraft 
> reflector or other places where the radios are discussed.
>
> I do thank Wayne and Eric for a list that says. The new radio has the 
> following differences to the K3 radio. As well as the portions of the 
> K3 that can not be upgraded to equal the new K3S radio.
>
> John k9uwa
> John Goller, K9UWA & Jean Goller, N9PXF Antique Radio Restorations 
> k9...@arrl.net Visit our Web Site at:
> http://www.JohnJeanAntiqueRadio.com
> 4836 Ranch Road
> Leo, IN 46765
> USA
> 1-260-637-6426
>
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>
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Re: [Elecraft] whats a updated K3 called?

[Charlie T]

It should be named "K3CharlieT".
(After ME !)
That way, when I get famous, your descendants can sell it as a valuable
collectable artifact for lots of money, or whatever is used at that time for
bartering.

73, Charlie k3ICH


If you think this is a tad absurd, you're absolutely correct.just as
this thread has gotten.



-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Raymond Sills
Sent: Friday, January 11, 2019 8:15 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] whats a updated K3 called?

So. let's call it a K3U... (U for upgrade)... so as to distinguish it
from a K3S.



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Re: [Elecraft] Sorta OT - assistive technology assistance needed

[Charlie T]

Hmmm,  and here I thought it meant "Old Timer", since that really relates to me.
Of course, "Off Topic "does too

Chas


-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Walter Underwood
Sent: Wednesday, January 09, 2019 11:59 PM
To: Elecraft@mailman.qth.net
Subject: Re: [Elecraft] Sorta OT - assistive technology assistance needed

Funny, I just realized I was misreading “OT” as Occupational Therapy. Our son 
just finished OT grad school and is studying for the board. Of course, 
assistive tech is a big part of occupational therapy.

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

> On Jan 9, 2019, at 5:42 PM, Dave Fugleberg  wrote:
> 
> I usually like to build stuff when I can, but I have to agree with the 
> others who suggested a commercial mixer. They are cheap and work well.
> I recently bought a small behringer USB mixer for under 50 bucks for a 
> project at work. It acts as a USB sound card, so you can mix audio to 
> or from the PC with other sources. You can adjust levels, 
> equalization, and position (left/right) for each source.
> I doubt one could homebrew an equivalent unit any cheaper.
> Good luck with your project! I’m sure your friend will appreciate it.
> 
> On Wed, Jan 9, 2019 at 5:30 PM Don Wilhelm  wrote:
> 
>> James,
>> 
>> There was a homebrew headphone mixer in the ARRL Handbook sometime 
>> back
>> - simple, with op-amps to isolate the sources.
>> 
>> However with the advent of 2 to 5 input mixers being available in the
>> $20 to $60 range (see Amazon), it seems foolish to consider building 
>> your own - drilling the enclosure for the potentiometers and jacks, 
>> building the board, mounting things, etc. will take more time and 
>> effort than is reasonable unless you really like doing those things - 
>> and it will likely cost more than buying one already built.
>> 
>> The nice thing about a mixer is that you have control over the level 
>> of each input as well as an overall output volume control.
>> 
>> 73,
>> Don W3FPR
>> 
>> On 1/9/2019 6:03 PM, Richards wrote:
>>> Good Day.
>>> 
>>> Background:
>>> 
>>> I am assisting a blind ham who also suffers some hearing loss.  I 
>>> suggested using headphones to attenuate ambient environmental noise 
>>> as he operates.  The rub is, he needs to hear both his receiver AND 
>>> his computer (which provides audible feedback when logging contacts 
>>> and performing other duties.)
>>> 
>>> Question:
>>> 
>>> Can anyone suggest a simple passive (or active) mixer circuit schema 
>>> I can build for him to safely mix audio signals from his transceiver 
>>> headphone jack with audio signals from his computer sound card 
>>> headphone jack?
>>> 
>>> Discussion:
>>> 
>>> While there are multiple commercially produced simple and complex 
>>> mixing products in the marketplace, I would prefer to build an 
>>> inexpensive, small footprint solution we can easily incorporate in 
>>> his station to minimize clutter and the number of cables, jacks, and 
>>> controls -- he
>>> contends with plenty of that already.   I suppose one solution might be
>>> a simple Y-adapter cable, but that seems too easy and I wonder 
>>> whether we should isolate the signals and/or grounds in some way?  
>>> (e.g., I do not wish to cause any "Pin-1" grounding issues, and 
>>> etc.)
>>> 
>>> Any traction?   Can anyone point me to an appropriate circuit schematic
>>> or other resource?  I don 't mind doing homework, and while I enjoy 
>>> building stuff and I am familiar with the basic concepts involved,  
>>> I could use a leg up on this project, especially to keep it simple 
>>> and easy to build and implement. Please reply off list if this 
>>> question is too far off topic, although I suspect there are many 
>>> hams who might be interested in the result, besides similarly situated 
>>> disabled operators.
>>> 
>>> Thank you -  James - K8JHR -
>>> ---
>>> 
>>> 
>>> 
>>> 
>>> __
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>>> donw...@embarqmail.com
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Re: [Elecraft] KAT 500 and open wire

[Charlie T]

I should probably know this, but what is the old dual air coil Heathkit B-1
balun, a current or voltage type?
If I remember correctly, they are 4:1 ratio.
Would this be a better choice for open-wire feed to a dipole intended for
use on several bands?

73, Charlie k3ICH




-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of K9MA
Sent: Sunday, January 06, 2019 10:24 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KAT 500 and open wire

On 1/6/2019 20:12, Jim Brown wrote:
> We add one or more common mode chokes to minimize the effect if the 
> common mode circuit, which is radiation and reception, and to do that, 
> a very good choke must be AT THE FEEDPOINT. I don't know of a way to 
> EFFECTIVELY choke a feedline that is not matched to the antenna. Yes, 
> you can put something there, but if it did anything useful it would 
> fry (unless yo only ran QRP to the antena), and a choke that wouldn't 
> fry with TX power won't do anything useful!

I have to respectfully disagree a little here. A choke specifically designed
for the antenna impedance at the feed point could effectively eliminate the
common mode current. The problem is, we often use balanced line with
antennas which have a large range of impedances over frequency range at
which they are used. (Think G5RV.) It may be impossible to design a single
choke which can work over the whole range. However, feeding balanced line
with a balanced tuner can work pretty well, even though the feedline may
radiate a bit due to common mode current. I've only attempted this with
link-coupled tuners. I'm not sure it works as well with the double T-network
tuners with a choke at the input, like the MFJ-976, but it may.

For years, I've used a warped, lop-sided, short, 80 meter "dipole" fed with
window line and the balanced tuner. I never bothered to try to figure out
the impedance at either the feedpoint or the tuner, but the tuner matches it
on several bands. I don't use it much on 80, though, as it's so close to the
roof of my house that the RF gets into everything. 
I'm sure the feedline radiates some, but that's not where the RFI is coming
from.

73,

Scott K9MA

--
Scott  K9MA

k...@sdellington.us

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Re: [Elecraft] Tech Support --- kpa1500 KUDOS

[Charlie T]

Everything "man-made" can have unforeseen problems no matter how much Beta 
testing is done.

That said, your minus minute follow-up call reminds me of an old TV commercial 
about a frustrated Maytag repair guy who was bored because he didn't have 
enough to do.
They were obviously touting the reliability of their brand because of the lack 
or repair work.
Now, I am NOT saying Elecraft techs are just sitting around all day drinking 
coffee, but you can bet if they WERE flooded by service calls, they "probably" 
couldn't have responded so fast.

{Before anyone gets their panties in a twist by reading into this something I 
did not intend, this IS meant to compliment Elecraft on their reliable 
equipment and of course their gold medal tech support.}

73, Charlie k3ICH





-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Rich Yost via Elecraft
Sent: Saturday, January 05, 2019 8:45 AM
To: elecraft@mailman.qth.net
Subject: [Elecraft] Tech Support --- kpa1500 KUDOS

Well, I saw the email Thursday night about the Important firmware update for the
kpa1500 v2.0
So I applied it after updating the utility program first when I got home from 
work on Friday.

Going well, till it failed and then hung.
Yes - I freaked out, I know what bad things happen when firmware updates go bad 
(aka iPhone)

well, sent a email to support - WITHIN 5 mins someone called to have me power 
off the from the back switch on the PS wait 5 mins and should be fine.
Sorry -- didn't remember his name, but the point was that I got a call within 5 
minutes !  Fantastic support ...

So  i followed what he said to do and tried it 10 mins later Still issues - 
just showed loading , but the utility showing loading but nothing worked yet 
and the fans were screaming. Another email to support . 5 minutes later 
again, Cody called and walked me off the edge and explained the force load 
procedure on page 29 ( yea - I know . RTFM. I did remember seeing, but 
didn't remember it at the time

well, back in business less than 5 mins later on the air all done happy happy 
joy joy

So, big NY kudos to tech support, first tech and to Cody. that's top notch 
support .
Cody made mention he wanted to make sure i got thru this for the weekend, that 
right there .. yea

So, to Elecraft Support/Engineers  thank you from n2ry . just spent 45 mins 
on 80m AM Richn2ry 
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Re: [Elecraft] [FS] KX3

[Charlie T]

Yes, that's true for a post card or letter, but Priority Mail rates as well as 
Parcel Post, or whatever it's called nowadays, increase with distance.

And very obviously with UPS or FedEx Ground.
By offering CONUS shipping, you are NOT saying you won't ship outside that 
range, it's just that it'll cost more.

Don't get me started on shipping to Canada !!!

73, Charlie k3ICH






-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Don Wilhelm
Sent: Tuesday, January 01, 2019 2:58 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] [FS] KX3

I fail to understand why some hams restrict shipping to CONUS only.

Hawaii and Alaska are US states, and Puerto Rico is a US Possession (whose 
people are US citizens).

Shipping (particularly by USPS Flat Rate) is no different than shipping to a 
neighboring state.

Why restrict your market by specifying CONUS which excludes HI, AK and Peurto 
Rico.

73,
Don W3FPR

On 1/1/2019 2:12 PM, Bob via Elecraft wrote:
   CONUS only.
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Re: [Elecraft] KX3 batteries

[Charlie T]

If that charge cycle theory floating around were true, an average car
battery wouldn't make it three years in a commuter vehicle.
Not sure I buy into that as my plain old (cheap)  #24 car batteries I use
with a solar charger typically give me over 10 years of service.

73, Charlie k3ICH




-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Bob N3MNT
Sent: Saturday, December 29, 2018 9:32 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KX3 batteries

I would guess that max # of charge cycles never comes into play in most Ham
Radio related battery failures.  It is more than likely that it is simply
age or abuse.  Over the years I doubt if 5% of my battery failures were due
to exceeding the number of charge cycles.  



--
Sent from: http://elecraft.365791.n2.nabble.com/
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Re: [Elecraft] wire for random wire antenna using kx3

[Charlie T]

Yes, but speaker wire is only good for audio up to about 25 kHz.  It has a
frequency limiting component in the wire alloy that must be removed in order
to use this type wire at RF.

This removal procedure is fairly easy to accomplish.  First, soak the wire
in a bucket of laundry detergent and water over night, then remove the wire
and rinse it thoroughly.
After assuring the wire is dry, place in an oven set to about 150 degrees
for about 3 - 4 hours.
In lieu of the oven, you can also place the wire in an afternoon of summer
sun.
After that, place the wire on the ground and hold a 2 meter hand-held over
the wire, approximately a foot away and key up the radio for 20 seconds at a
couple watts output.
If you see no reaction, sparking, especially tingling in your ears,  or
physical movement of the wire, it is now safe to use as an antenna.

Note this advice is given freely and may be disseminated with no intended
royalty charges or copyright infringements.

73, Charlie k3ICH



-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Don Wilhelm
Sent: Monday, December 17, 2018 9:46 AM
To: Richard watson ; elecraft

Subject: Re: [Elecraft] wire for random wire antenna using kx3

Rick,

Certainly it will work, and makes for a quick temporary antenna,
particularly indoors.
However, if you are using the speaker wire as a transmission line, it has
relatively high loss characteristics, and I would recommend that you think
about replacing the transmission line part with real parallel transmission
line for a more permanent installation.

For the radiator section, the speaker wire can remain.

73,
Don W3FPR



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Re: [Elecraft] Less Than Perfect Antennas [was Flumoxed]

[Charlie T]

I thought I said that...
Oh wait I DID say that !

AND, A VEE will have a slightly more omni-directional pattern.
(That's where the gain of the horizontal dipole went !)

73, Charlie k3ICH

-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Bob McGraw K4TAX
Sent: Friday, December 07, 2018 9:18 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Less Than Perfect Antennas [was Flumoxed]

While I agree with Jim's information, I would point out the flat dipole will 
have 3 dB more signal off of its broadside 0/180° as compared to that of a 
inverted V dipole off of its broadside.  At the same time, the inverted V 
dipole will have about 4.5 db more signal off of its ends 90/270° as compared 
to that of a flat dipole off of its ends.

It appears what one loses with one antenna is made up with the other antenna 
depending on azimuth and apex angle of the inverted V being somewhat greater 
than 90°.In fact it appears that the Inverted V has almost an 
omnidirectional pattern at an elevation angle of 25°.  Fig 9.6

If a close match to 50 ohms is required, it is best to adjust the angle for 
lowest SWR while maintaining resonance by adjustment of the length.

Reference:  ARRL Antenna Book, 22nd Edition,  9.1.3 Inverted-V Dipole

73

Bob, K4TAX


On 12/7/2018 6:51 PM, Jim Brown wrote:
> On 12/7/2018 12:55 PM, Dick Dickinson wrote:
>> Why is there so much promotion of dipole antennas over inverted vee 
>> type antennas?
>
> As has been noted, an inverted vee is a compromise dipole -- the sort 
> of thing you can rig with a single support. A flat dipole with its 
> center at the same height as the inv vee will have a dB or two more 
> gain, and the directional pattern will be the classic "figure-eight"
> pattern with broad peaks broadside to the wire and nulls off the ends. 
> Inverted vees tend to lose the nulls off their ends. All this stuff is 
> in the ARRL Handbook and Antenna Book which every ham should own and 
> study as we have time.
>
> For rigging heights that are possible for most hams, horizontal 
> antennas for 160 or 80, and 40M over flat terrain produce more gain at 
> greater height. It is a fallacy that an antenna must be low to work 
> short distances. Low antennas radiate LESS signal at high angles than 
> high ones. I published a study of this several years ago. It's here.
> http://k9yc.com/AntennaPlanning.pdf beginning on page 10. Field 
> strength at 70 degrees vertical elevation just starts to fall off as 
> it is raised to 1/3 wavelength. That's 45 ft on 40M, 90 ft on 80M, 180 
> ft on 160M.
>
> 73, Jim K9YC
>
>
>
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> rmcg...@blomand.net


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Re: [Elecraft] Less Than Perfect Antennas [was Flumoxed]

[Charlie T]

AND, A VEE will have a slightly more omni-directional pattern.
(That's where the gain of the horizontal dipole went !)

73, Charlie k3ICH



-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of K9MA
Sent: Friday, December 07, 2018 4:44 PM
To: Dick Dickinson 
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Less Than Perfect Antennas [was Flumoxed]

A flat dipole will have slightly more gain than an inverted V at the same 
height. The inverted V will also have to be a bit longer. 

73,
Scott K9MA 

--

Scott Ellington. K9MA

 --- via iPhone

> On Dec 7, 2018, at 2:24 PM, Dick Dickinson  wrote:
> 
> Oh…I guess I tend to think of dipoles as being linear in configuration…such 
> as horizontal dipole, etc. 
> 
> 
> 
> 
> 
> Dick – KA5KKT
> 
> 
> 
> --
> -
> 
> 
> 
> An inverted vee IS a dipole.
> 
> 
> 
> -John NI0K
> 
> 
> 
> Dick Dickinson wrote on 12/7/2018 2:55 PM:
> 
>> Why is there so much promotion of dipole antennas over inverted vee type 
>> antennas?
> 
>> 
> 
>> 
> 
>> 
> 
>> 
> 
>> 
> 
>> Kindly,
> 
>> 
> 
>> Dick – KA5KKT
> 
>> 
> 
> 
> 
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> k...@sdellington.us

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Re: [Elecraft] Less Than Perfect Antennas

[Charlie T]

I wonder if anyone has ever tried, for want of a better name, a "Skeleton
Cone" which consists of a single horizontal wire connected to the coax
center conductor and two sloping wires at 45 degrees, in the same plane
connected to the coax shield.  A true Discone antenna would have many
(typically eight each) horizontal and sloping elements. I'm guessing many
of us have used the VHF/UHF version for very wide band coverage, for
example 144, 220, 432 MHz and even higher.  I know I have one up and it
performs as well as a regular single band  ¼λ ground plane (unity gain)
on all three bands with low SWR.  The ICOM version as well as a few others,
also have a loaded whip for 52 MHz mounted on the bushing that the
horizontal elements are screwed into.

I'm also guessing the formulas for a true Discone would work for a
"skeleton" style as well.  I Since it is inherently a wide band design, the
actual lengths are probably not too critical.  I've heard this type antenna
described, but I don't remember where or how well it supposedly worked.  It
obviously requires two supports, high enough that the sloping wires ends
are off the ground by a bit.

73, Charlie k3ICH




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Re: [Elecraft] I am flummoxed about my antenna

[Charlie T]

How are you determining resonance?

If you are measuring strictly voltage standing wave ratio with for example,  a 
Bird 43 meter, then a reactive system whose characteristic impedance is far 
from 50 Ω, may in fact show the lowest SWR meter reading at a point well off 
the actual antenna resonance.

73, Charlie k3ICH




-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of David Gilbert
Sent: Saturday, December 01, 2018 3:39 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] I am flummoxed about my antenna


Agree on both points.  The resonant point appears to be well below 1.8 MHz and 
there is clearly a lot of loss in there somewhere.  He says he changed out the 
coax so water in the coax seems less likely.

The fact that the resonance has dropped is odd, since it implies more length 
instead of less like you'd get with a bad connection.  I wonder if the end of 
the wire that is in the tree has lost it's insulation and there is actually 
contact to wet wood there.  That would add both additional loading and loss.

73,
Dave   AB7E



On 12/1/2018 10:04 AM, Vic Rosenthal wrote:
> 1. The resonant point seems to be at 1.80 or below.
> 2. The broad response indicates high loss somewhere. If you hadn’t said that 
> you changed it, I would suspect water in the coax.
>
> Victor 4X6GP
>
>> On 1 Dec 2018, at 18:54, Leroy Buller  wrote:
>>
>> There
>> I tried to get on 160 with my Inverted L last night.  60 feet up and the
>> rest over to a tree, 130 feet total.  About 20 random length radials in the
>> yard.  The best I can do with a city lot.  This antenna worked last year
>> very well, but now I get this
>>
>> 12/1/2018 10:46:08 AM NOTES:
>>
>> Frequency SWR
>> - ---
>> 00180 1.3
>> 00181 1.4
>> 00182 1.4
>> 00183 1.4
>> 00184 1.4
>> 00185 1.5
>> 00186 1.6
>> 00187 1.6
>> 00188 1.5
>> 00189 1.5
>> 00190 1.6
>> 00191 1.6
>> 00192 1.6
>> 00193 1.6
>> 00194 1.6
>> 00195 1.6
>> 00196 1.6
>> 00197 1.7
>> 00198 1.8
>> 00199 2.0
>> 00200 2.1
>>
>> There seems to be NO resonance at all with this antenna.  Before, I could
>> operate the bottom of the band but nothing above 1850 without a tuner.  I
>> have changed out the coax feeding the antenna which hepl bring signals up,
>> but it seems to be a dummy load.
>>
>> Anyone have an idea what is going on?  Shucks, I am out of ideas.  Unless
>> my ground plane has gone wonky
>>
>> My tuner can't find a match for it either.  I have an automatice tuner now,
>> but it cannot find a match.  Something is wrong here and I am stumped.
>>
>> Any help from the antenna gurus out there?
>>
>> Lee - K0WA
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Re: [Elecraft] [K3] SWR - Numerical Indication

[Charlie T]

Yep,  ur right Don.  A freebie Harbor Freight digital voltmeter appears to
have a helluva lot better accuracy than reality.
Digital calculators on the other hand, ARE accurate.
This changes our mind-set, simply because we see all those digits past the
decimal point on a dVOM.

it was better when we only had slide-rules to calculate things.
Accuracy to more than three places was at best, a guess.
Besides, what good does it do to arrive at a required by-pass capacitor's
value of 0.0110987 µF ?

73, Charlie k3ICH




-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Don Wilhelm
Sent: Friday, November 30, 2018 9:56 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] [K3] SWR - Numerical Indication

Petr and all,

Those digital instruments that show 2, 3, or 4 decimal places have given us
a false sense of accuracy.
For instance an instrument that is accurate to 5% and has a 4 digit display
can show us (when measuring a 5 volt source) anywhere between
4.750 volts and 5.250 volts and still be within the 5% accuracy window for
the instrument.

Review the specs and calibration for whatever meter you are using and do not
expect those extra digits to be correct - in other words round the numbers
displayed.

Many wattmeters are only accurate to 20% of the reading - so if one
wattmeter at 100 watts shows 120 watts and another shows 80 watts, the
actual power could be 100 watts.  Take that into consideration.

The Telepost LP-100 when calibrated to NIST standards is accurate to 5% (it
can be lower, but Larry will not guarantee it).  So any power it displays
between 95 and 105 watts can actually be 100 watts.

In other words, look at the specified accuracy of whatever meter you are
using and take that into consideration.  Those extra digits on your meter
may be meaningless.

73,
Don W3FPR


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Re: [Elecraft] FS: New CM500 headset

[Charlie T]

To quote that ancient Chinese philosopher:  Sum-Ting-Wong"

Find that and your "howls" will go away.

There's far too many satisfied users of the CM-500's for anything that
drastic to be the norm.

73, Charlie k3ICH




-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Edward R Cole
Sent: Sunday, November 25, 2018 4:24 AM
To: Elecraft Reflector 
Subject: [Elecraft] FS: New CM500 headset

I bought a new Yamaha CM500 headset last spring to compare with AntLion boom
mic.
The AntLion attaches to my trusty Sony MDR-V800 stereo headset and got good
reports on the air.

I tried the CM500 and immediately my hearings howled with feedback even with
headset not connected to a radio.  Totally unsuitable for use by me so I am
selling the CM500 (which I bought for $59.99) asking $48.00 (including
priority mail shipping which cost me $13.65).  Current best price is $58.29
on Amazon.com with free shipping.  You save $10.29.

I prefer PayPal but will accept check or money order.

73, Ed - KL7UW
   http://www.kl7uw.com
Dubus-NA Business mail:
   dubus...@gmail.com 

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