[Elecraft] wanted knb2

[Yahoo!]

Wanted KNB2 noise blanker kit or built doesn't
matter.  Let me know if anyone got one laying
around. 73, Bill, W0WFH replay to w0...@yahoo.com
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Re: [Elecraft] Price increase in mid Sept.

[Fred Smith]

Like the KX3 you mean (8-)

73,
Fred/N0AZZ

-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of N5GE
Sent: Thursday, August 16, 2012 8:33 PM
To: Oliver Dröse
Cc: Elecraft Reflector; Eric Swartz WA6HHQ - Elecraft
Subject: Re: [Elecraft] Price increase in mid Sept.

On Thu, 16 Aug 2012 22:34:12 +0200, Oliver Dröse  wrote:

[snip]
>I understood that Kenwood, Yaesu, Icom start with an a bit higher price 
>(but still acceptable otherwise they would not sell their radios) and 
>after "earning" all the development costs (and "milking" the early 
>adaptors who always need the newest and "best") they can and do 
>decrease the product prices as they only have the production costs then
(including margin, etc.).
>Typical mass-production mechanisms.
>

>So what is different at Elecraft?

You forget one thing.

You cannot buy a rig directly from the giant rig manufacturers.  The price
you
pay for them is the mark-up the dealer makes so he/she can make a profit.
Another thing to take into account is that it's the dealer who charges you
more
for your new (I want it before anyone else product) in the beginning because
he/she knows you will pay extra for the latest thing, so you can tell others
you
have one, or so you can test it against you current rig and report on it
before
anyone else does.

No malice is intended in my statement.  That's just how some folks are.

[snip]

Amateur Radio Operator N5GE
ARRL Lifetime Member
QCWA Lifetime Member

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Re: [Elecraft] Fwd: Re: Price increase in mid Sept.

[Fred Smith]

I personally have no problems with price increases as costs are rising in my
business as they are in all. I for one will pay more to Elecraft for the
reason that they continue to support their radios with service and parts
very important to me and a factor that weighted heavy on my buying decision
as well as their support.

I am one of the early adopters that some talk about paying too much for a
radio I want the radios when they first hit the market not lay around and
nitpick about it for years till the price drops. I bought the FTDX-5000MP
and pre-ordered it 5 mo in advance of its release here in the states mine
was the second one delivered. I followed it closely in the Japan market and
knew what it could do and it's ratings and it turned out to be the #1 rated
radio in most all the receiver tests. I have not been disappointed in it so
far.

Recently I decided to try some Elecraft equipment starting with a loaded
K2/100 then a W2 next came a high serial # K3/100 and a new P3 with SVGA
most recently a new K3/100 loaded and 2m also. I decided against the
Elecraft amp was not a fit for my station used my VL-1000 for a while with
the K3's. Then bought a refurbished amp from Alpha a 87A with AlphaMax and a
Palstar AT-Auto till there Alpha's tuner is delivered.

My reasoning behind these radio purchases I have others also an IC-9100 in
the mix but I wanted to own the #1 & 2 radios on the list and have found the
Yaesu and the Elecraft to have distinct differences between them each having
strong and weak points where one will outdo the other. I have found a
fondness for the Elecrafts that has come on rather strong the last several
months and comparing radios is really quite enjoyable.

73,
Fred/N0AZZ



-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Gary Gregory
Sent: Thursday, August 16, 2012 10:23 PM
To: David Gilbert
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Fwd: Re: Price increase in mid Sept.

*Dave,

Agreed.

Pricing does get affected due to corporate structure. The sales division
more often than not has a bottom line dictated to them and sometimes this
takes away a lot of headroom.

Elecraft are tightly managed and pricing is carefully monitored no doubt as
well as manufacture costs.

I have not purchased based solely on the management of a company. Indeed
performance of the product was the most important. Reputation is the second
criteria I have used in my decision making process.

I have always taken note of customers writings but not to the point of
discarding a company from my own personal decision making process.

I guess the old saying 'to each their own' can be applied in liberal doses?

73
Gary
*
On 17 August 2012 13:00, David Gilbert  wrote:

>
> Actually, comparing any company with any other company that builds a 
> similar product is perfectly valid.  How they may be structured should 
> not be a consideration in your buying decision ... at least it isn't 
> in mine.  I managed a large electronics business for many years and 
> the last thing I expected my customers to judge me on was anything 
> besides
performance/quality/reliability/price/delivery/service/dependability.
> That's all that matters, and they're all visible to the customer.
> Elecraft manages that balance pretty well which is why I buy their 
> products, but I can't see myself cutting them any slack simply because 
> their competitors might have better leverage to supply me with what I
want.
>
> Dave   AB7E
>
>
>
> On 8/16/2012 5:36 PM, Gary Gregory wrote:
> >
> > To compare Elecraft to say Kenwood, Icom and Yaesu is perhaps not a 
> > good comparison. The corporate structure and governance of these 
> > companies is totally different.
> >
> > Gary
>
> __
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>



--
*Gary*
*Start the day off slow, then taper off.*
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Re: [Elecraft] KAT500

[Jon K Hellan]

I've got a K3, a hand me down Ameritron AL-811 amp, an LDG AT-600 Pro 
tuner, and often use somewhat strange antennas. (See picture at 
www.ha19.no/la4rt/ ).

I'm considering replacing the LDG tuner with a KAT500. The LDG unit 
isn't bad, but it's got a confusing user interface, and it's so noisy 
that I can't let it run a full tuning cycle while people are sleeping 
next door. It also doesn't match quite as well as the built in tuner in 
the K3.

Can the field testers comment on what the KAT500 sounds like. Has 
anybody had the opportunity to compare both tuners?

The el cheapo amp will stay for the foreseeable future, so I'm 
interested in if and how the combination will work. I found an old 
thread with a lot of info:

On 06/23/2012 06:38 PM, Dick Dievendorff wrote:
> Fred:  N6TV took a good back panel of my prototype unit at Visalia:
> http://www.elecraft.com/KAT500/kat500rear_visalia.jpg. It's sitting atop a
> KPA500.
>
> The KAT500 back panel has two 15-pin ACC connectors labeled "control". One
> cable (XCVR) goes from your K3 to the KAT500, another (AMP) goes from the
> KAT500 to the KPA500.

Will the cable from the K3 be useful even with a "dumb" amp?

 > ..
> The two RCA connectors labeled PTT RLY are not needed for the KPA500 as the
> amp key line interrupt is in the 15-pin ACC cable (along with band change
> lines and AUXBUS). If you're using another amplifier, you'll want to put the
> KAT500 in the keying/PTT line between the transceiver and amplifier.  The
> KAT500 wants to hot-switch relays at exciter power, not QRO.

I guess this means that the PTT line goes
[ K3 ]---[ KAT500 ]---[ AL-811 ]
And that the K3 tune button will tune the KAT500 when it's inline, and 
the KAT500 won't let the amp key up unless the tuner is ready. Correct?

Jon LA4RT
Trondheim, Norway
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Re: [Elecraft] KX-3 - Thank you Elecraft for dropping over 10lbs off my pack weight

[Steve KC8QVO]

I use earbud style headphones made by Sony with some soft rubber cup things.
Normally I would not use them, but I wanted as compact of a package and
these work for that. I don't know what the model is, they were around $30-40
and have a volume control on the wire. 

Steve, KC8QVO



--
View this message in context: 
http://elecraft.365791.n2.nabble.com/KX-3-Thank-you-Elecraft-for-dropping-over-10lbs-off-my-pack-weight-tp7559790p7561179.html
Sent from the Elecraft mailing list archive at Nabble.com.
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[Elecraft] Griffin PowerMate

[reliant325]

Can anyone recommend a method or software to use a Griffin PowerMate or a 
Contour ShuttlePro2  with my K3?

Thanks Roger G0IUW
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Re: [Elecraft] Griffin PowerMate

[Phillip Zminda]

I use N4PY Pegasus Plus software to control my K3. Pegasus Plus  
supports the Griffin Powermate. I have used a  Powermate with N4PY but  
not using one currently. I believe the Powermate can be set up in  
place of a mouse with most software. I now have a mouse that has a  
high speed roller mode that provides a similar function.

Phil N3ZP
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Re: [Elecraft] [K1] No power out

[Bob Molloy]

Just an FYI since it's a little hard to find, the RFPROBE kit is on this
page http://www.elecraft.com/order_form_parts.htm#K2%20Parts under K2 PARTS
AND MOD KITS.

 

Bob KD2UJ

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Re: [Elecraft] Fwd: Re: Price increase in mid Sept.

[KENT TRIMBLE]

Or in plain English . . .

You charge as much as you can and still sell your product.
You charge as little as you can and still stay in business.

73,

Kent  K9ZTV



On 8/16/2012 11:42 PM, someone wrote:
> It is MBA 101. You price products to cost or to market. When you are an 
> Elecraft you keep raising prices and track contribution to the bottom line.  
> As long as contribution is positive you have price elasticity .  And prices 
> go up further.  Forget the cost
>
>
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Re: [Elecraft] How's the RIT work?

[Ray Sills]

Bill's plight is a reminder to those who do go out in the field, if  
possible, bring electronic documentation if you have a device that can  
read a PDF... (smart phone, tablet, netbook, etc).

73 de Ray
K2ULR

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[Elecraft] [OT] Digest reader recommendation

[Mark Kempisty]

Going a bit off topic here but should still be relevant.

This is the only e-mail reflector I get in digest format (the others that I 
subscribe to only have a handful of messages a week so I get those one by one). 
Reading through the digest gets difficult at times.


Can anyone recommend an e-mail digest reader good for XP and later OS'es? The 
one or two I've found don't like the format of this digest for some strange 
reason and are no longer supported.

 
Take care,
Mark
AA3K
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Re: [Elecraft] Price increase in mid Sept.

[hawley, charles j jr]

Eric and Wayne, thanks for the notice on a (modest) price increase.
Very appreciated. I will get my planned orders in before mid September.

Chuck, KE9UW
aka Jack, BMW Motorcycles BMWMOA #224
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[Elecraft] KX3: Do (OFS / B) LEDs ever both turn off?

[Andrew Moore]

I would swear I've had my KX3 in a mode in which the LED indicators for
OFS/B were both turned off (maybe at power-up?), but once the LEDs are
active I can't seem to duplicate the behavior.

When I tap the adjacent knob to select either OFS or B mode, the
appropriate LED would turn on, as expected.

The unexpected behavior was that the LED would ever be off in the first
place, since the knob has to always be tied to either one function or the
other.

The only explanation I can think of is that the LEDs don't light until you
need either of those functions.

I've consulted the manual but I'm still a little confused. It happens
easily

--Andrew, NV1B
maineware.net
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Re: [Elecraft] [OT] Digest reader recommendation

[Don Wilhelm]

Mark,

I find the digest format to be cumbersome because you have to sort 
through it message by message.  I know of no digest readers.

I prefer to receive individual emails - BUT I have told my email client 
(Thunderbird) to put everything with "[Elecraft]" in the subject line 
into an "Elecraft" folder in my Inbox - by creating a "Message Filter".  
If one does not use a filter, everything flows only to the Inbox, and 
yes, that can prove to be overwhelming.

I can glance at the contents of that folder and quickly delete those 
emails that are not of interest or keep those that I believe are worthy 
of archiving.

73,
Don W3FPR

On 8/17/2012 8:31 AM, Mark Kempisty wrote:
> Going a bit off topic here but should still be relevant.
>
> This is the only e-mail reflector I get in digest format (the others that I 
> subscribe to only have a handful of messages a week so I get those one by 
> one). Reading through the digest gets difficult at times.
>
>
> Can anyone recommend an e-mail digest reader good for XP and later OS'es? The 
> one or two I've found don't like the format of this digest for some strange 
> reason and are no longer supported.
>
>   
> Take care,
> Mark
> AA3K
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Re: [Elecraft] How's the RIT work?

[Don Wilhelm]

I assume the K3 rather than the KX3.

Simply tapping the RIT button should be sufficient to turn on RIT. 
Initially the green LED will light (indicating zero offset), and then as 
you rotate the RIT/XIT knob, one or the other of the yellow LEDs will 
light indicating negative RIT offset or positive offset. The amount of 
offset is indicated briefly in the VFO B area.

73,
Don W3FPR

On 8/16/2012 10:47 PM, Dr. William J. Schmidt, II wrote:
> SO I'm down on J6 without the manual and don't know how to make the RIT
> (right bottom control) come to life. what's the secret (menu setting?)..
>
>   
>
>   
>
> Dr. William J. Schmidt - K9HZ / J68HZ/ 8P6HK/ ZF2HZ/ pj4hz
>
>   
>
> Owner - Operator
>
> Big Signal Ranch
>
> Staunton, Illinois
>
>   
>
> email:    b...@wjschmidt.com
>
>   
>
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Re: [Elecraft] KX3: Do (OFS / B) LEDs ever both turn off?

[Matt Zilmer]

If VFO B's display isn't showing a frequency, both LEDs (OFS and B)
will be dark.  This would be the case if the VFO B display is used to 
show KX3 operating parameters (voltages, time, temperatures, audio
output levels).  Tap DISP to toggle VFO B between frequency and
parameter displays.

73,
matt W6NIA


On Fri, 17 Aug 2012 09:09:51 -0400, you wrote:

>I would swear I've had my KX3 in a mode in which the LED indicators for
>OFS/B were both turned off (maybe at power-up?), but once the LEDs are
>active I can't seem to duplicate the behavior.
>
>When I tap the adjacent knob to select either OFS or B mode, the
>appropriate LED would turn on, as expected.
>
>The unexpected behavior was that the LED would ever be off in the first
>place, since the knob has to always be tied to either one function or the
>other.
>
>The only explanation I can think of is that the LEDs don't light until you
>need either of those functions.
>
>I've consulted the manual but I'm still a little confused. It happens
>easily
>
>--Andrew, NV1B
>maineware.net
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Re: [Elecraft] KX3 direct conversion system

[須崎 純一]

Many thanks for OT's comment on this system.
I don't understand the process within the multiplexer chip in detail, however, 
I think it's basically PSN.
In Japan, Kenwood adopted PSN in it's first SSB transmitter TX-15 about 45 
years ago.
US manufactures were more advanced at that time.
It's my pleasure Elecraft has now established it's unique position.

73, Jun JI1TLL 

> From: r...@cobi.biz
> To: elecraft@mailman.qth.net
> Date: Wed, 15 Aug 2012 19:46:10 -0700
> Subject: Re: [Elecraft] KX3 direct conversion system
> 
> Us OTs recognize this system as the reverse of the phasing system of 
> generating SSB that was popular in the 1950's. Phasing lost popularity as 
> low-cost and high-quality crystal filters became available because, like the 
> KX3, they depended upon highly accurate phase shift and gain control over the 
> entire bandwidth of the audio channel to cancel the opposite sideband. 
> (Remember, everything then was analog, meaning building wide-band analog 
> phase shift networks that remained stable from discrete components.) Back in 
> the "day" it wasn't easy to do and achieve more than 20 or perhaps 30 dB of 
> attenuation. That was adequate in the 50's when almost all 'phone' stations 
> were using double-sideband a.m. occupying 6 kHz of bandwidth. 
> 
> In the KX3 it appears to be returning with substantially greater phase and 
> gain accuracy, and so opposite sideband suppression, than we could achieve 
> back then.
> 
> 73, Ron AC7AC
> 
> -Original Message-
> From: elecraft-boun...@mailman.qth.net 
> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Wayne Burdick
> Sent: Wednesday, August 15, 2012 9:07 AM
> To: ji1...@jarl.com
> Cc: elecraft@mailman.qth.net
> Subject: Re: [Elecraft] KX3 direct conversion system
> 
> 須崎 純 (Jun) wrote:
> 
> > I built KX3 kit (S/N830) up last week after fixing some errors.
> > As soon as trying some functions, I found it's really a direct 
> > conversion system.  A weak leaked signal was observed with another 
> > receiver just on the watching frequency.
> 
> You can reduce the KX3's VFO signal leakage to another receiver nearby by 
> setting MENU:RX ISO to ON.
> 
> Yes, it is similar to direct conversion, except that there are two channels 
> (I and Q, like other SDRs), allowing for image rejection. The
> KX3 uses this architecture rather than superhet to provide the SDR feature, 
> as well as to reduce the number of stages, allowing the unit to be very 
> compact.
> 
> 73,
> Wayne
> N6KR
> 
> 
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Re: [Elecraft] [OT] Digest reader recommendation

[Eric Swartz WA6HHQ - Elecraft]

See the web based digests at www.elecraft.com/elist.html

The mail-archive.com digest has posts listed by subject line in reverse date 
order. Just click on the ones you want to read. I tend to prefer this reader.

The Nabble archive has both topic and thread views.

Both archives are searchable by key word too.

73,

Eric

www.elecraft.com
_..._



On Aug 17, 2012, at 7:31 AM, Mark Kempisty  wrote:

> Going a bit off topic here but should still be relevant.
> 
> This is the only e-mail reflector I get in digest format (the others that I 
> subscribe to only have a handful of messages a week so I get those one by 
> one). Reading through the digest gets difficult at times.
> 
> 
> Can anyone recommend an e-mail digest reader good for XP and later OS'es? The 
> one or two I've found don't like the format of this digest for some strange 
> reason and are no longer supported.
> 
>  
> Take care,
> Mark
> AA3K
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[Elecraft] Install of KX3 in Truck

[Keith Heimbold]

I am starting the installation of my KX3 in my Silverado this weekend with a 
professional installer who does most of the major emergency response, police 
and fire vehicles in the San Diego area. 

I plan to use a Hi Q type antenna and a dedicated 6m vertical. He recommended 
the use of a device called a Turbo Tuner in order to get proper resonance from 
the Hi Q antenna for HF bands. 

I inquired to the gentleman who owns the company that makes the turbo tuner and 
he says it works with the K3. I am curious if anyone who has their KX3 
installed in mobile has installed this device. Any perspective would be very 
welcome.

Thanks,

Keith
AG6AZ

Sent from my iPhone please excuse typos
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Re: [Elecraft] How's the RIT work?

[Ron D'Eau Claire]

When I need to find information quickly, I find the electronic version
superior to a printed manual. 

In this case, typing RIT into the Adobe reader search window finds every
instance of "rit" in the manual. Just a few clicks takes you to RIT on page
11 that reads "RIT/XIT (pg. 16): Three switches control RIT and XIT on/off
and clear (offset zero). The knob below the RIT /XIT switches selects the
offset."

Total search time was about 15 seconds. 

73, Ron AC7AC


-Original Message-

To all that suggested I read the online manual... yeah thanks.  Perfect in
the middle of a dxpedition...


Dr. William J. Schmidt - K9HZ / J68HZ/ 8P6HK/ ZF2HZ

Owner - Operator
Big Signal Ranch
Staunton, Illinois

email:  b...@wjschmidt.com

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[Elecraft] KX3 "DE-Xpedition" - K2N

[stan levandowski]

We'll be taking three KX3s aboard the last surviving destroyer escort in 
the world {USS SLATER (DE-766)} that has been returned to its original 
1945 wartime condition.  The date and time is September 19th from 1600Z 
to 2400Z.  The geographic location is the Port of Albany, NY, on the 
Hudson River.  We'll be operating QRP CW on or around 7031 KHz, 14061 
KHz, and 18097 KHz. We'll be operating from the LOPs ("Local Operating 
Positions") in Radio Central.  We'll be utilizing the authentically 
restored shipboard verticals (70' and 80') and horizontal wires (100' 
and 190').  There is a detailed entry for K2N at qrzed dot com including 
QSL info.  There is insufficient lead time for publication in QST or CQ. 
So anyone with interest please mark your calendar.
73, Stan WB2LQF
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Re: [Elecraft] KX3 "DE-Xpedition" - K2N

[Scott Dunlavey]

cool..and good luck.
FYI, K2N is coming up AfghaniSTAN on QRZ.com

haha




On Fri, Aug 17, 2012 at 11:04 AM, stan levandowski wrote:

> We'll be taking three KX3s aboard the last surviving destroyer escort 
> in the world {USS SLATER (DE-766)} that has been returned to its 
> original 1945 wartime condition.  The date and time is September 19th 
> from 1600Z to 2400Z.  The geographic location is the Port of Albany, 
> NY, on the Hudson River.  We'll be operating QRP CW on or around 7031 
> KHz, 14061 KHz, and 18097 KHz. We'll be operating from the LOPs 
> ("Local Operating Positions") in Radio Central.  We'll be utilizing 
> the authentically restored shipboard verticals (70' and 80') and 
> horizontal wires (100' and 190').  There is a detailed entry for K2N 
> at qrzed dot com including QSL info.  There is insufficient lead time 
> for publication in QST or CQ. So anyone with interest please mark your 
> calendar.
> 73, Stan WB2LQF
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[Elecraft] KX3 and 60 meters

[john]

I haVE BEEN ON THE LIST FOR A KX3 for 3 days 29 minutes and 53 seconds. But 
whose counting. Anyway, I have 
been reading the manual and I haVE SEEN ANYTHING bout 60 Meters. I am 
woindering if it will actually work there or not and how the channelization is 
handled. I suppose write it to memories.


73, John NS5Z 

Bossier City, Louisiana 
EM-32, QRP-ARCI, G-QRP, ARRL, RSGB
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Re: [Elecraft] KX3 "DE-Xpedition" - K2N

[Wayne Burdick]

Sounds like fun, Stan.

Hopefully you won't have the three stations right on top of each  
other. But if you do, you'll want to keep the following menu entries  
in mind:

- If you have two or more radios on the same band, set RX ISO to ON.  
This will prevent them from hearing each other's VFO signals in  
receive mode. This setting defaults to OFF since it adds about 10-15  
mA to receive current drain.

- RX SHFT can be set to 8.0, if needed, to reduce or eliminate any  
mutual interference during transmit. Most SDR-architecture receivers  
have the equivalent of RX SHFT turned on at all times, partly for this  
reason. But it defaults to no shift (NOR) in the KX3 to allow the use  
of dual watch and roofing filters. RX SHFT is a per-band setting; you  
might need it only on one band, or not at all.

- If keying one rig activates the carrier-operated-relay (COR) of the  
other(s), you can optionally move their COR threshold up (MENU:COR  
LVL). The default is 0.1 watts. I wouldn't move it too much higher  
than this.

The KX3 takes other automatic protective steps as required. This  
includes temporary reduction of I.F. gain, and turning off the preamp.

73,
Wayne
N6KR


On Aug 17, 2012, at 8:04 AM, stan levandowski wrote:

> We'll be taking three KX3s aboard the last surviving destroyer  
> escort in
> the world {USS SLATER (DE-766)} that has been returned to its original
> 1945 wartime condition.  The date and time is September 19th from  
> 1600Z
> to 2400Z.  The geographic location is the Port of Albany, NY, on the
> Hudson River.  We'll be operating QRP CW on or around 7031 KHz, 14061
> KHz, and 18097 KHz. We'll be operating from the LOPs ("Local Operating
> Positions") in Radio Central.  We'll be utilizing the authentically
> restored shipboard verticals (70' and 80') and horizontal wires (100'
> and 190').  There is a detailed entry for K2N at qrzed dot com  
> including
> QSL info.  There is insufficient lead time for publication in QST or  
> CQ.
> So anyone with interest please mark your calendar.
> 73, Stan WB2LQF
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Re: [Elecraft] KX3 and 60 meters

[Holger Schurig]

The KX3 can send and receive on any frequency, not only on HAM
frequencies. As always, it's the responsibility of the operator to
stay the legal, frequency-wise, power-wise and bandwidth-wise.

The rig doesn't have some way of chanellizing. You have either to
setup the exact frequency (and make sure no RIT is on ...). Or you can
use some of the memories.
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[Elecraft] [K1] K1 SN 3142 is alive!

[Bob Molloy]

Hi,

 

With superior dexterity, perseverance, dumb luck, and a lot of help from Don
W3FPR my K1 is complete and working on 40 and 20 meters. This is my first
kit rig, my first QRP rig, and my first CW only rig. 

 

When I set out to buy a QRP rig, I looked at everything I could find on the
Web. What sold me on the K1 was the owner's manual, the fact that no
expensive test equipment was needed, and Elecraft's reputation. The K1 is
everything I hoped it would be and more. It's a true pleasure to be able to
build something this well designed. And it's made in the USA.

 

As the saying goes, "You may not be impressed that I built this radio, but
it impresses the hell out of me."

 

73,

Bob KD2UJ

 

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Re: [Elecraft] KX3 and 60 meters

[Matthew Zilmer]

60m works fine on the KX3.  If you give each 60m memory a name starting with 
'*' (asterisk), then adjusting VFO A will allow choosing from the five channels 
directly.  Be sure to put CW  at the channel center frequencies, if you  intend 
to use CW that is.

Matt Zilmer
KX3 #6, F/T

-Original Message-
From: elecraft-boun...@mailman.qth.net 
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of j...@all-the-facts.com
Sent: Friday, August 17, 2012 8:24 AM
To: Elecraft@mailman.qth.net
Subject: [Elecraft] KX3 and 60 meters


I haVE BEEN ON THE LIST FOR A KX3 for 3 days 29 minutes and 53 seconds. But 
whose counting. Anyway, I have been reading the manual and I haVE SEEN ANYTHING 
bout 60 Meters. I am woindering if it will actually work there or not and how 
the channelization is handled. I suppose write it to memories.


73, John NS5Z 

Bossier City, Louisiana 
EM-32, QRP-ARCI, G-QRP, ARRL, RSGB
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[Elecraft] P3 Hash

[Gene Trasti]

> P3 with svga
> 
> I have a considerable amount of "hash" on my panadapter screen.  It tracks 
> the same spot on all bands.  All my equipment is very well grounded.  I have 
> measured my shack for RFI-it is very clean.  I swapped out my switching power 
> supply for a highly filtered one.  I even purchased a pretty expensive ac 
> terminal strip with isolation transformers.  I have been through the house 
> and have virtually switched off and unplugged everything-nothing seems to 
> help.  This hash takes up a pretty healthy portion of the bandwidth.  Any 
> sugestions would be appreciated.  Is it possible that this could be a problem 
> with the P3 or K3 they are both factory built-although I added the svga board 
> using a wrist ground..
> 
> 
> Gene. W6jmp
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Re: [Elecraft] KX3 and 60 meters

[Don Wilhelm]

John,

Certainly the KX3 will transmit on 60 meters.  Where it transmits is up 
to the operator and his license class.

Look at "Channel hopping" and you can find how to channelize your KX3 on 
60 meters or any other band where that is helpful.

73,
Don W3FPR

On 8/17/2012 11:24 AM, j...@all-the-facts.com wrote:
> I haVE BEEN ON THE LIST FOR A KX3 for 3 days 29 minutes and 53 seconds. But 
> whose counting. Anyway, I have
> been reading the manual and I haVE SEEN ANYTHING bout 60 Meters. I am 
> woindering if it will actually work there or not and how the channelization 
> is handled. I suppose write it to memories.
>
>
> 73, John NS5Z
>
> Bossier City, Louisiana
> EM-32, QRP-ARCI, G-QRP, ARRL, RSGB
>

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[Elecraft] Elecraft Price Increase - My 2 Cents

[W0UCE]

Just my 2 Cents: 
I feel there is no better value or bang for your buck than Elecraft and I
know of no other manufacturer that provides a level of service that compares
or comes close to Elecraft.

73,
Jack W0UCE 

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Re: [Elecraft] [K1] K1 SN 3142 is alive!

[Mike Morrow]

Bob/KD2UJ wrote"

> ...my K1 is complete and working on 40 and 20 meters.

It's a great radio.  I built K1 s/n 175 12 years ago and it remains my
favorite QRP rig.

I hope you installed the LCD back light option.   That is so useful that
no K1 should be sold without it.  It can be a real pain to back fit
later into a K1 that has already been built.

No K1 should be sold with a two-band filter board either.  The four-band
board offers, of course, twice the bands.  Almost as importantly, it has much
sharper filtering for performance that is superior to the two-band model.

A four-band board with 15 meters is ideal for the next few years of the
solar activity cycle...that's the best QRP band when open.

> The K1 is everything I hoped it would be and more.

Unfortunately, it is a "mature" product for which it is unlikely that new
accessories will ever be introduced...such as high-band four-band filter
board for 17/15/12/10m, which would be ideal at this point in solar cycle 24.

Mike / KK5F
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Re: [Elecraft] [K1] K1 SN 3142 is alive!

[William Ravenel]

Congratulations on the K1 build, Bob. The K1 I bought a few years ago was my 
first Elecraft acquisition and my first kit since a Heathkit power supply many 
years ago. I've had a blast using it in portable field operations. I predict 
you'll build the 4 band board next. Even though I've moved up the rig ladder 
since, I still have the K1 and doubt I'll ever part with it.

William, AI4VE
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Re: [Elecraft] Elecraft Price Increase - My 2 Cents

[Richard]

And who announces the price increase so we can avoid it!

Thanks!

Rich
NU6T

W0UCE  wrote:

>Just my 2 Cents: 
>I feel there is no better value or bang for your buck than Elecraft and I
>know of no other manufacturer that provides a level of service that compares
>or comes close to Elecraft.
>
>73,
>Jack W0UCE 
>
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Re: [Elecraft] P3 Hash

[Rowland R Johnson]

I had the same problem. Replacing the BNC coax cable (between the P3 and 
K3) with one I had lying around fixed it. Howard at Elecraft tech 
support then sent a new cable that arrived 36 hours after I talked to 
him. This new cable from Elecraft worked fine, for a while, but then 
started having the same kinds of problems. I put my old cable that I had 
lying around back on and it's worked for several months now.

I haven't pursued getting a second replacement from Elecraft because it 
hardly seems worthwhile. In addition, it's not 100% clear to me that the 
problem is the cable. With the 2 Elecraft cables I've noticed some 
difficulty in connecting the BNC plug to the BNC receptacle on the back 
of the P3. Not so with my old cable. The supposition being that the 
physical dimensions of BNC receptacle on the P3 aren't quite right. 
Whereas the new cables have a problem fitting, my old cable may be worn 
enough that it fits anyway.


On 8/17/2012 9:00 AM, Gene Trasti wrote:
>> P3 with svga
>>
>> I have a considerable amount of "hash" on my panadapter screen.  It tracks 
>> the same spot on all bands.  All my equipment is very well grounded.  I have 
>> measured my shack for RFI-it is very clean.  I swapped out my switching 
>> power supply for a highly filtered one.  I even purchased a pretty expensive 
>> ac terminal strip with isolation transformers.  I have been through the 
>> house and have virtually switched off and unplugged everything-nothing seems 
>> to help.  This hash takes up a pretty healthy portion of the bandwidth.  Any 
>> sugestions would be appreciated.  Is it possible that this could be a 
>> problem with the P3 or K3 they are both factory built-although I added the 
>> svga board using a wrist ground..
>>
>>
>> Gene. W6jmp
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>

-- 
Rowland R Johnson
rowl...@lascanadas.org

www.lascanadas.org
House 805-438-3673
Cell 805-305-5252
Fax 805-438-4970

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Re: [Elecraft] [K1] K1 SN 3142 is alive! Plus questions...

[Gil G.]

Congratulations Bob, I just built one too, great radio!

Mike & all, what do you guys think of the usefulness of the noise blanker?

By the way, I just converted my 2-band board to 80/17, but the 17 side does not 
work, darn!
I must have messed-up somewhere because the board worked before on 40/20.

By the way, what is that RF choke that came in the 80m kit?

Gil.
--
New site: http://radiopreppers.com
PGP Key: http://keskydee.com/gil.asc

On Aug 17, 2012, at 12:51 PM, Mike Morrow wrote:

> Unfortunately, it is a "mature" product for which it is unlikely that new
> accessories will ever be introduced...such as high-band four-band filter
> board for 17/15/12/10m, which would be ideal at this point in solar cycle 24.

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Re: [Elecraft] P3 Hash

[Jack Smith]

Some Chinese BNC male connectors don't properly mate with a 
dimensionally correct BNC female.

Not sure where the dimensional problem is, but I've run into the problem 
more than once.

Jack K8ZOA

On 8/17/2012 1:15 PM, Rowland R Johnson wrote:
> I had the same problem. Replacing the BNC coax cable (between the P3 and
> K3) with one I had lying around fixed it. Howard at Elecraft tech
> support then sent a new cable that arrived 36 hours after I talked to
> him. This new cable from Elecraft worked fine, for a while, but then
> started having the same kinds of problems. I put my old cable that I had
> lying around back on and it's worked for several months now.
>
> I haven't pursued getting a second replacement from Elecraft because it
> hardly seems worthwhile. In addition, it's not 100% clear to me that the
> problem is the cable. With the 2 Elecraft cables I've noticed some
> difficulty in connecting the BNC plug to the BNC receptacle on the back
> of the P3. Not so with my old cable. The supposition being that the
> physical dimensions of BNC receptacle on the P3 aren't quite right.
> Whereas the new cables have a problem fitting, my old cable may be worn
> enough that it fits anyway.
>
>
> On 8/17/2012 9:00 AM, Gene Trasti wrote:
>>> P3 with svga
>>>
>>> I have a considerable amount of "hash" on my panadapter screen.  It tracks 
>>> the same spot on all bands.  All my equipment is very well grounded.  I 
>>> have measured my shack for RFI-it is very clean.  I swapped out my 
>>> switching power supply for a highly filtered one.  I even purchased a 
>>> pretty expensive ac terminal strip with isolation transformers.  I have 
>>> been through the house and have virtually switched off and unplugged 
>>> everything-nothing seems to help.  This hash takes up a pretty healthy 
>>> portion of the bandwidth.  Any sugestions would be appreciated.  Is it 
>>> possible that this could be a problem with the P3 or K3 they are both 
>>> factory built-although I added the svga board using a wrist ground..
>>>
>>>
>>> Gene. W6jmp
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>>
>>

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Re: [Elecraft] [K1] K1 SN 3142 is alive! Plus questions...

[Mike Morrow]

Gil asked:

> ...what do you guys think of the usefulness of the noise blanker?

For years, I thought the KNB1 was only marginally useful, because only
rarely did I find a noise source for which it was effective.  But in
the past four years I've encountered in several locations, including
my home that an odd digital-type noise is present on some bands.  The
KNB1 has been very effective for that, and I've been very happy to have
it.  I stay away from using the noise blanker at its most extreme
setting (which is LO, meaning it triggers on a low signal threshold).
That can dramatically reduce receiver dynamic range.

> By the way, I just converted my 2-band board to 80/17, but the 17 side
> does not work, darn!  I must have messed-up somewhere because the board
> worked before on 40/20.

I converted my original 40/20m board to 80/17m after I built the
40/30/20/15m board.  It works fine, with a little better power output
on the 17m side than the 80m side.

I'm sure that you must have a simple problem on 17m, like maybe poor
solder connections to any of the six 17m band toroids (L2, L3, L7, L8,
L11, L12).  Does it receive?  The first thing I'd check is that a nearby
receiver can hear the 17m heterodyne crystal oscillator, which should
be heard about 26050 +/- 5 kHz when the 17m band is selected.

> By the way, what is that RF choke that came in the 80m kit?

It's a small 100 uH choke that installs in place of the jumper installed
at manual page 30 (upper right paragraph), which says:

"Locate the component outline for RFC8, on the bottom of the RF
board in the transmitter area. Install a short wire jumper at RFC8,
formed from a component lead or solid hookup wire.
Note: an RF choke may be supplied with the 80-meter band kit (2-
band Filter board only) for use at RFC8. This RF choke can be
installed at any time, and will have no effect on K1 alignment or
testing on any band. Its function is to improve stability on 80 meters
when the K1 is used with poorly-matched loads or an ATU."

Also specific to 80m use is C78, from manual page 45 (right side):

"Make sure that all component locations on the RF board have
been filled, except for two: J1, which is supplied with the noise
blanker option kit (KNB1), and C78, which may be supplied with the
80-m band kit for the 2-band Filter board. If you have the 80 meter
board, install C78 at this time on the bottom of the board near the PA
and 12V labels with the (+) lead oriented as shown on the outline.
Fold C78 down flat against the board before soldering."

I think that RFC8 and C78 should be supplied standard with every K1,
but for some reason they never have been.  Sometimes RFC8 is not even
supplied with an 80m parts kit, though it should be.

73,
Mike / KK5F
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Re: [Elecraft] P3 Hash

[Rowland R Johnson]

I took a close look and the BNC on the P3 and the center conductor 
either was faulty to begin with or was damaged by the male BNC being 
misaligned. My old cable still fits without any difficulty. I'm 
supposing that, although it's not certain, it's likely that this caused 
the hash seen on the P3.

Anyway, Howard at Elecraft is sending a replacement board that has the 
damaged BNC receptacle.


On 8/17/2012 11:02 AM, Jack Smith wrote:
> Some Chinese BNC male connectors don't properly mate with a
> dimensionally correct BNC female.
>
> Not sure where the dimensional problem is, but I've run into the problem
> more than once.
>
> Jack K8ZOA
>
> On 8/17/2012 1:15 PM, Rowland R Johnson wrote:
>> I had the same problem. Replacing the BNC coax cable (between the P3 and
>> K3) with one I had lying around fixed it. Howard at Elecraft tech
>> support then sent a new cable that arrived 36 hours after I talked to
>> him. This new cable from Elecraft worked fine, for a while, but then
>> started having the same kinds of problems. I put my old cable that I had
>> lying around back on and it's worked for several months now.
>>
>> I haven't pursued getting a second replacement from Elecraft because it
>> hardly seems worthwhile. In addition, it's not 100% clear to me that the
>> problem is the cable. With the 2 Elecraft cables I've noticed some
>> difficulty in connecting the BNC plug to the BNC receptacle on the back
>> of the P3. Not so with my old cable. The supposition being that the
>> physical dimensions of BNC receptacle on the P3 aren't quite right.
>> Whereas the new cables have a problem fitting, my old cable may be worn
>> enough that it fits anyway.
>>
>>
>> On 8/17/2012 9:00 AM, Gene Trasti wrote:
 P3 with svga

 I have a considerable amount of "hash" on my panadapter screen.  It tracks 
 the same spot on all bands.  All my equipment is very well grounded.  I 
 have measured my shack for RFI-it is very clean.  I swapped out my 
 switching power supply for a highly filtered one.  I even purchased a 
 pretty expensive ac terminal strip with isolation transformers.  I have 
 been through the house and have virtually switched off and unplugged 
 everything-nothing seems to help.  This hash takes up a pretty healthy 
 portion of the bandwidth.  Any sugestions would be appreciated.  Is it 
 possible that this could be a problem with the P3 or K3 they are both 
 factory built-although I added the svga board using a wrist ground..


 Gene. W6jmp
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>

-- 
Rowland R Johnson
rowl...@lascanadas.org

www.lascanadas.org
House 805-438-3673
Cell 805-305-5252
Fax 805-438-4970

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Re: [Elecraft] P3 Hash

[Fred Townsend]

BNCs are known as constant impedance connectors but what impedance? Usually
it's 50 ohms but there are 75 ohm out there particularly in the video world.
They do have different dimensions but you are not likely to detect the
difference with the naked eye. Jack you are absolutely correct that at least
one Chinese connector company markets both 50 and 75 ohm but with identical
dimensions. These connectors actually measure out at about 62 ohms, a
compromise dimension. The worst part is the oversized parts can damage the
mating connector. Correspondingly some connectors may use soft metal so once
they are spread they are forever sloppy. Caveat Emptor. Buy quality American
or UK connectors and save the headache.  
73
Fred, AE6QL

-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jack Smith
Sent: Friday, August 17, 2012 11:03 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] P3 Hash

Some Chinese BNC male connectors don't properly mate with a dimensionally
correct BNC female.

Not sure where the dimensional problem is, but I've run into the problem
more than once.

Jack K8ZOA

On 8/17/2012 1:15 PM, Rowland R Johnson wrote:
> I had the same problem. Replacing the BNC coax cable (between the P3 
> and
> K3) with one I had lying around fixed it. Howard at Elecraft tech 
> support then sent a new cable that arrived 36 hours after I talked to 
> him. This new cable from Elecraft worked fine, for a while, but then 
> started having the same kinds of problems. I put my old cable that I 
> had lying around back on and it's worked for several months now.
>
> I haven't pursued getting a second replacement from Elecraft because 
> it hardly seems worthwhile. In addition, it's not 100% clear to me 
> that the problem is the cable. With the 2 Elecraft cables I've noticed 
> some difficulty in connecting the BNC plug to the BNC receptacle on 
> the back of the P3. Not so with my old cable. The supposition being 
> that the physical dimensions of BNC receptacle on the P3 aren't quite
right.
> Whereas the new cables have a problem fitting, my old cable may be 
> worn enough that it fits anyway.
>
>
> On 8/17/2012 9:00 AM, Gene Trasti wrote:
>>> P3 with svga
>>>
>>> I have a considerable amount of "hash" on my panadapter screen.  It
tracks the same spot on all bands.  All my equipment is very well grounded.
I have measured my shack for RFI-it is very clean.  I swapped out my
switching power supply for a highly filtered one.  I even purchased a pretty
expensive ac terminal strip with isolation transformers.  I have been
through the house and have virtually switched off and unplugged
everything-nothing seems to help.  This hash takes up a pretty healthy
portion of the bandwidth.  Any sugestions would be appreciated.  Is it
possible that this could be a problem with the P3 or K3 they are both
factory built-although I added the svga board using a wrist ground..
>>>
>>>
>>> Gene. W6jmp
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>>

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[Elecraft] KX3 Aux 2 linear keying hookup

[David Robertson]

Philippe,

On the 2.5 mm Aux2 jack connect the ring to your linear's Key input. The
sleeve is ground.  Do not connect anything to the tip as that is a DC
voltage. Make sure the linear's keying voltage and current is low. Old
linears like the Collins and Heathkit SB series employ high keying voltages
and will damage the KX3. Elecraft has not been at all clear about the Aux2
jack on the KX3 manual.  Have fun with your KX3. I am having a ball with
mine.
73
Dave KD1NA

On 8/17/2012 1:05 PM, philippe PARACHEY wrote:

Hello Dear Dave,

 I have read your post on the Juma with KX3, very fine. I just received the
KX3 this morning...

 On the book, the setup to connect an ext amp to KX3 is not very clear...

 Could you tell me how to use the 2,5 mm stéréo jack, tip, ring, sleeve???
to connect a simple relay to the amp.

 My first qso this afternoon was with NA, 10W, too funny. Thanks in advance.

 Best regards,


73's Philippe F5JWH

 SKCC N° 8069T

 Philippe PARACHEY
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Re: [Elecraft] P3 Hash

[Brian Alsop]

There are 50 ohm and 72 ohm BNC's.  They look the same.  They differ in 
the pin details and dielectric used.

See for example:
http://www.milestek.com/blog/index.php/2011/04/50-ohm-vs-75-ohm-bnc-connectors-explained/

They supposedly can be plugged in to the "other type" without damage.
I'm not sure just what that means.

73 de Brian/K3KO

On 8/17/2012 17:15, Rowland R Johnson wrote:
> I had the same problem. Replacing the BNC coax cable (between the P3 and
> K3) with one I had lying around fixed it. Howard at Elecraft tech
> support then sent a new cable that arrived 36 hours after I talked to
> him. This new cable from Elecraft worked fine, for a while, but then
> started having the same kinds of problems. I put my old cable that I had
> lying around back on and it's worked for several months now.
>
> I haven't pursued getting a second replacement from Elecraft because it
> hardly seems worthwhile. In addition, it's not 100% clear to me that the
> problem is the cable. With the 2 Elecraft cables I've noticed some
> difficulty in connecting the BNC plug to the BNC receptacle on the back
> of the P3. Not so with my old cable. The supposition being that the
> physical dimensions of BNC receptacle on the P3 aren't quite right.
> Whereas the new cables have a problem fitting, my old cable may be worn
> enough that it fits anyway.
>
>
> On 8/17/2012 9:00 AM, Gene Trasti wrote:
>>> P3 with svga
>>>
>>> I have a considerable amount of "hash" on my panadapter screen.  It tracks 
>>> the same spot on all bands.  All my equipment is very well grounded.  I 
>>> have measured my shack for RFI-it is very clean.  I swapped out my 
>>> switching power supply for a highly filtered one.  I even purchased a 
>>> pretty expensive ac terminal strip with isolation transformers.  I have 
>>> been through the house and have virtually switched off and unplugged 
>>> everything-nothing seems to help.  This hash takes up a pretty healthy 
>>> portion of the bandwidth.  Any sugestions would be appreciated.  Is it 
>>> possible that this could be a problem with the P3 or K3 they are both 
>>> factory built-although I added the svga board using a wrist ground..
>>>
>>>
>>> Gene. W6jmp
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>>
>>
>



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No virus found in this message.
Checked by AVG - www.avg.com
Version: 2012.0.2178 / Virus Database: 2437/5205 - Release Date: 08/17/12

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Re: [Elecraft] [K1] K1 SN 3142 is alive! Plus questions...

[Mike Morrow]

I wrote:

> I'm sure that you must have a simple problem on 17m, like maybe poor
> solder connections to any of the six 17m band toroids (L2, L3, L7, L8,
> L11, L12).

Correction.  Only L11 and L12 are toroids.  The other four are slug-tuned
inductors.

Mike / KK5F
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Re: [Elecraft] Price increase in mid Sept.

[Oliver Dröse]

Thanks a lot Wayne.

That is the major explanation I was looking for. With Elecraft it's easy to 
follow sales figures as everybody's proud and posts them (me too ;-)). That 
is more difficult with the other big manufacturers. But my assumption is 
they do sell lots lots more radios (take alone all those HT's although they 
get some big competitors fro China nowadays). Heard rumors once (not sure if 
that's true but could imagine) that Yaesu sold > 100.000 FT-817's in the 
first 8 years alone. Then they have all their other products, too. So that 
certainly is another volume also for buying components etc. and using their 
market share to literally "dictate" prices at some semi-conductors, too. 
Keeping fingers crossed that Elecraft will grow further and further (keeping 
up your good support structures, etc.) and increase their market share. 
Would be interesting to see an "official" market share diagram concerning 
amateur radio manufacturers one day.

To all of you "drifting" into a value discussion: I did not question if 
Elecraft products are worth their prices (some might have misinterpreted my 
original mail - judging from a few responses here on the reflector and quite 
a number of privat mails). They are, that's why I spent quite some 
Dollars/Euros with them, too, and intend to buy even more. ;-)

73, Olli - DH8BQA
K3 #4546, KPA500 #431,
KX3 # 602, KAT500 #???




- Original Message - 
From: "Wayne Burdick" 
To: "Oliver Dröse" 
Cc: "Eric Swartz WA6HHQ - Elecraft" ; "Elecraft 
Reflector" 
Sent: Friday, August 17, 2012 12:43 AM
Subject: Re: [Elecraft] Price increase in mid Sept.


Our volume is certainly less than that of the "big three." That means
we can't order in quantities as large as they do, and we have less
leverage at times when prices go up. And they have been going up --
almost everything gets more expensive year to year.

73,
Wayne
N6KR

Oliver Dröse wrote:

> What I have already been wondering when the last price increase was
> announced 2 years ago (I believe it was) is why are prices  increasing for
> Elecraft gear (even if only slightly) while prices of all other
> manufacturers are falling after products a certain time on the market?
>
> I understood that Kenwood, Yaesu, Icom start with an a bit higher  price 
> (but
> still acceptable otherwise they would not sell their radios) and after
> "earning" all the development costs (and "milking" the early  adaptors who
> always need the newest and "best") they can and do decrease the  product
> prices as they only have the production costs then (including  margin, 
> etc.).
> Typical mass-production mechanisms.
>
> So what is different at Elecraft? No mass-production (compared to  the 
> "big
> ones")? Or is that lower prices right away and thus always only 
> production
> costs + margin + only small uplift for development (which might  level out
> that of the others seen over a complete product life-cycle)? At  least 
> those
> others have to fight the same cost increases for components, etc.




-
E-Mail ist virenfrei.
Von AVG überprüft - www.avg.de
Version: 2012.0.2197 / Virendatenbank: 2437/5203 - Ausgabedatum: 15.08.2012


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Re: [Elecraft] P3 Hash

[Jack Smith]

If you look at an HP/Agilent 75 ohm BNC connector you will find it has 
no supporting insulation, just the bare spring finger in the female 
version or the outer metal shell in the male version.

As far as I have been able to determine from checking dimensional 
drawings, BNC 50 and 75 ohm connectors will mechanically mate without 
damage. There will be, of course, a bump in the line that may or may not 
be of concern.

There may have been some very old BNCs - 1940's vintage - for which the 
pins are different diameter but that seems not to be the case for 
anything made in recent times.

50 and 75 ohm N connectors, in contrast, do not physically mate as the 
75 ohm male pin is smaller diameter than the 50 ohm version. If mated 
with a 50 ohm female, the center pin will not make reliable contact. 
Worse yet, a  50 ohm male N will splay out the spring fingers in a 75 
ohm female connector and damage it.

Jack K8ZOA


On 8/17/2012 3:20 PM, Brian Alsop wrote:
> There are 50 ohm and 72 ohm BNC's.  They look the same.  They differ in
> the pin details and dielectric used.
>
> See for example:
> http://www.milestek.com/blog/index.php/2011/04/50-ohm-vs-75-ohm-bnc-connectors-explained/
>
> They supposedly can be plugged in to the "other type" without damage.
> I'm not sure just what that means.
>
> 73 de Brian/K3KO
>
> On 8/17/2012 17:15, Rowland R Johnson wrote:
>> I had the same problem. Replacing the BNC coax cable (between the P3 and
>> K3) with one I had lying around fixed it. Howard at Elecraft tech
>> support then sent a new cable that arrived 36 hours after I talked to
>> him. This new cable from Elecraft worked fine, for a while, but then
>> started having the same kinds of problems. I put my old cable that I had
>> lying around back on and it's worked for several months now.
>>
>> I haven't pursued getting a second replacement from Elecraft because it
>> hardly seems worthwhile. In addition, it's not 100% clear to me that the
>> problem is the cable. With the 2 Elecraft cables I've noticed some
>> difficulty in connecting the BNC plug to the BNC receptacle on the back
>> of the P3. Not so with my old cable. The supposition being that the
>> physical dimensions of BNC receptacle on the P3 aren't quite right.
>> Whereas the new cables have a problem fitting, my old cable may be worn
>> enough that it fits anyway.
>>
>>
>> On 8/17/2012 9:00 AM, Gene Trasti wrote:
 P3 with svga

 I have a considerable amount of "hash" on my panadapter screen.  It tracks 
 the same spot on all bands.  All my equipment is very well grounded.  I 
 have measured my shack for RFI-it is very clean.  I swapped out my 
 switching power supply for a highly filtered one.  I even purchased a 
 pretty expensive ac terminal strip with isolation transformers.  I have 
 been through the house and have virtually switched off and unplugged 
 everything-nothing seems to help.  This hash takes up a pretty healthy 
 portion of the bandwidth.  Any sugestions would be appreciated.  Is it 
 possible that this could be a problem with the P3 or K3 they are both 
 factory built-although I added the svga board using a wrist ground..


 Gene. W6jmp
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>>>
>>>
>
>
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> Checked by AVG - www.avg.com
> Version: 2012.0.2178 / Virus Database: 2437/5205 - Release Date: 08/17/12
>
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Re: [Elecraft] Price increase in mid Sept.

[N5GE]

On Thu, 16 Aug 2012 21:09:57 -0500, Tony Estep  wrote:

>On Thu, Aug 16, 2012 at 8:32 PM, N5GE  wrote:
>
>> ...You cannot buy a rig directly from the giant rig manufacturers. ...
>
>
>This has nothing  to do with the original point
[snip]

Nonsense.  

Any time there is a distributor in a transaction the transaction will be
affected by adjustments made by the distributor .  The distributor can even
decide to sell a product at a loss.

The factory doesn't pay to ship it's product, the distributor does.  Even
Elecraft has no control over the shipping cost passed on to the distributor by
the company who hauls the freight, which is passed on by Electraft to the
customer, unless Elecraft decides to provide free shipping or not charge the
customer for the parts in the assembled product.

Caution: OT Comment...

I agree with you that stock holders drive the price of products, but it seems to
me that the stock holders should never be so stupid as to pay CEO's the insane
salaries they have these days. 
Amateur Radio Operator N5GE
ARRL Lifetime Member
QCWA Lifetime Member

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[Elecraft] KXpd3 paddles

[bill . va3ol]

I am not sure if this is a fair comment on the paddles or just my
particular circumstance. I like the Kx3 paddles; I can adjust them with
close enough spacing and they are smooth but when it comes to  the
positioning. I find that the paddles are to close to the desk and this is
exacerbated when I am using a wrist brace, which I do about 30 % of the
time. As near as I can figure it out; looking at my other keys, I need 1/2
of an inch clearance above the desk to match my natural finger positioning.
I have found that if I use a small 1/3 inch 'artists eraser' under the
front of the rig I can send much better. Peter pointer isn't dragging on
the desk and there is room for uneven surfaces.

Comments welcome.

Bill, VA3OL
Oro-Medonte, Ontario
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[Elecraft] K3 Utility won't run on OSX 10.7.4 (Lion)

[William Ravenel]

I recently upgraded to the Lion OS on a MacBook and downloading the latest Mac 
version of the K3 Utility (K3UtilityOSX_1_12_3_28B). I unzipped the utility to 
my Applications folder but when I try to start the program I see an 
"Installing" message and then the statement,  "An exception of 
NilObjectException was not handled. The application must shutdown." I have no 
choice but to click OK, at which point the app shut downs. I am using a 
Prolific version of the USB to Serial cable with the latest driver and it works 
fine with MacLoggerDX. Has the latest K3 Utility been proven to work with Lion?

William, AI4VE
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[Elecraft] P3 use to detect signal from Mars

[Randy Hall]

Hi

I used my P3 to help receive a signal from Mars. Here is the video.

Randy
K7AGE

http://www.youtube.com/watch?v=MeG1d1cORpE
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Re: [Elecraft] K3 Utility won't run on OSX 10.7.4 (Lion)

[W4ATK]

Go to the Disk Utility found in the Applications/Utilities folder and run 
Repair Permissions. This will clear the problem.

73s Jim, W4ATK

On Aug 17, 2012, at 3:35 PM, William Ravenel wrote:

> I recently upgraded to the Lion OS on a MacBook and downloading the latest 
> Mac version of the K3 Utility (K3UtilityOSX_1_12_3_28B). I unzipped the 
> utility to my Applications folder but when I try to start the program I see 
> an "Installing" message and then the statement,  "An exception of 
> NilObjectException was not handled. The application must shutdown." I have no 
> choice but to click OK, at which point the app shut downs. I am using a 
> Prolific version of the USB to Serial cable with the latest driver and it 
> works fine with MacLoggerDX. Has the latest K3 Utility been proven to work 
> with Lion?
> 
> William, AI4VE
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Re: [Elecraft] K3 Utility won't run on OSX 10.7.4 (Lion)

[David Fleming]

I doubt that will help. I'm in touch with William off list.

David, W4SMT (developer of the Mac version of the K3 Utility)



 From: W4ATK 
To: William Ravenel  
Cc: Elecraft Reflector  
Sent: Friday, August 17, 2012 5:02 PM
Subject: Re: [Elecraft] K3 Utility won't run on OSX 10.7.4 (Lion)
 
Go to the Disk Utility found in the Applications/Utilities folder and run 
Repair Permissions. This will clear the problem.

73s Jim, W4ATK

On Aug 17, 2012, at 3:35 PM, William Ravenel wrote:

> I recently upgraded to the Lion OS on a MacBook and downloading the latest 
> Mac version of the K3 Utility (K3UtilityOSX_1_12_3_28B). I unzipped the 
> utility to my Applications folder but when I try to start the program I see 
> an "Installing" message and then the statement,  "An exception of 
> NilObjectException was not handled. The application must shutdown." I have no 
> choice but to click OK, at which point the app shut downs. I am using a 
> Prolific version of the USB to Serial cable with the latest driver and it 
> works fine with MacLoggerDX. Has the latest K3 Utility been proven to work 
> with Lion?
> 
> William, AI4VE
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Re: [Elecraft] KX3 "DE-Xpedition" - K2N

[Willis]

Stan, that is great news!  While Slater is the only DE that is seaworthy, there 
is another.  It is the USS Stewart, DE 238 that is displayed at Seawolf Park at 
Galveston, Texas.  We have three functional antennas and a TS-440 installed.  
Our call is N5BPS.  I will attempt to hear you when you get on the air and will 
be happy to exchange information and pictures.
Sent from my iPhone Willis Cooke, trustee for USS Stewart and USS Cavalla

On Aug 17, 2012, at 10:04, stan levandowski  wrote:

> We'll be taking three KX3s aboard the last surviving destroyer escort in 
> the world {USS SLATER (DE-766)} that has been returned to its original 
> 1945 wartime condition.  The date and time is September 19th from 1600Z 
> to 2400Z.  The geographic location is the Port of Albany, NY, on the 
> Hudson River.  We'll be operating QRP CW on or around 7031 KHz, 14061 
> KHz, and 18097 KHz. We'll be operating from the LOPs ("Local Operating 
> Positions") in Radio Central.  We'll be utilizing the authentically 
> restored shipboard verticals (70' and 80') and horizontal wires (100' 
> and 190').  There is a detailed entry for K2N at qrzed dot com including 
> QSL info.  There is insufficient lead time for publication in QST or CQ. 
> So anyone with interest please mark your calendar.
> 73, Stan WB2LQF
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Re: [Elecraft] KX3 "DE-Xpedition" - K2N

[Chip Stratton]

Stan, Willis -

I MIGHT be able to make it to our submarine USS Batfish SS-301 to operate
from the LOP that day. And, I MIGHT have a KX3 by then - if not then my K2.
It should be a reasonable hop to Albany on 20m, not so sure about Galveston
though.

Like DE-238 our club has a TS-440 that resides on the submarine, though
there has been talk of finding a US made rig to replace it someday.

If I or another sub club member can make it, look for call WW2SUB.

Chip
AE5KA


On Friday, August 17, 2012, Willis wrote:

> Stan, that is great news!  While Slater is the only DE that is seaworthy,
> there is another.  It is the USS Stewart, DE 238 that is displayed at
> Seawolf Park at Galveston, Texas.  We have three functional antennas and a
> TS-440 installed.  Our call is N5BPS.  I will attempt to hear you when you
> get on the air and will be happy to exchange information and pictures.
> Sent from my iPhone Willis Cooke, trustee for USS Stewart and USS Cavalla
>
> On Aug 17, 2012, at 10:04, stan levandowski  wrote:
>
> > We'll be taking three KX3s aboard the last surviving destroyer escort in
> > the world {USS SLATER (DE-766)} that has been returned to its original
> > 1945 wartime condition.  The date and time is September 19th from 1600Z
> > to 2400Z.  The geographic location is the Port of Albany, NY, on the
> > Hudson River.  We'll be operating QRP CW on or around 7031 KHz, 14061
> > KHz, and 18097 KHz. We'll be operating from the LOPs ("Local Operating
> > Positions") in Radio Central.  We'll be utilizing the authentically
> > restored shipboard verticals (70' and 80') and horizontal wires (100'
> > and 190').  There is a detailed entry for K2N at qrzed dot com including
> > QSL info.  There is insufficient lead time for publication in QST or CQ.
> > So anyone with interest please mark your calendar.
> > 73, Stan WB2LQF
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[Elecraft] Elecraft KPA500 vs Tokyo Hy-Power 1.1Kfx

[Robbins, James]

I am wondering if anyone has an explanation for why the Elecraft  
KPA500 amplifier (500 watts) employs 2 VRF2933 FETs (Microsemi) in  
the final PA where the THP uses 4 ST2933 FETs (STMicroelectronics) to  
generate very similar power levels.  The data sheets for each FET  
indicate that both brands are rated at 300-400 watts, support similar  
mismatches and run at similar voltage maximums.  They have very  
similar specs all together.

Perhaps our amplifier gurus could weigh in here.  Much appreciated.

73,
Jim Robbins
N1JR

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Re: [Elecraft] P3 Hash

[Jim Brown]

On 8/17/2012 11:02 AM, Jack Smith wrote:
> Some Chinese BNC male connectors don't properly mate with a
> dimensionally correct BNC female.

I'm a member of the AES Standards Committee Working Group on Connectors, 
and the Working Group includes representatives of major manufacturers of 
audio connectors, most notably Switchcraft and Neutrik.  Likewise, 
virtually all major mfrs of pro mics are represented in the Microphone 
Working Group, of which I am also a member.  Most of these manufacturers 
have major problems with counterfeits of their products, and dimensions 
are only one of the characteristics that don't meet specifications.

Yet another reason for sticking to known quality manufacturers (and 
reputable distributors who buy direct from those manufacturers, not 
counterfeits) of this sort of product.

73, Jim K9YC
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[Elecraft] K3 Utility won't run on OSX 10.7.4 (Lion

[Adrian]

. Try:

1. Open Finder and go to your "Macintosh HD."
2. Right-click on the "Library" folder and select "Get Info"
3. In the Info window click the padlock at the bottom and enter your admin
password.
4. Under "Sharing and Permissions" click the [+] and add your user name to
the list and click "OK."
5. Change your Privileges to "Read and Write"
6. Close the Info window for the "Library" folder

7. Open the "Library" folder
8. Find the "Preferences" folder, right-click it and select "Get Info"
9. In the Info window click the padlock at the bottom and enter your admin
password.
10. Under "Sharing and Permissions" click the [+] and add your user name to
the list and click "OK."
11. Change your Privileges to "Read and Write"
12. Close the Info window for the "Preferences" folder

13. Open the "Preferences" folder
14. Find  files named ~"K3Util..plist" or like enough to be associated with
K3Util and delete them all.

15. Run the K3Util installer once more. 

Adrian . vk4tux

. Adrian . vk4tux

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Re: [Elecraft] P3 Hash

[Don Wilhelm]

Good points Jim, but as a group we are a "lazy sort" and many purchase 
their BNC coax assemblies from those who offer pre-assembled cables.  In 
that case, there is no opportunity to specify the connectors - we have 
to trust that the cable vendors are using quality connectors in the 
cable assemblies that they sell. Unfortunately that may not always be 
the case.

I agree that we are hams and should have some element of technical 
expertise, and the simple matter of putting a BNC connector on a piece 
of RG-58 should not be a problem for us, but the reality is that hams 
are more and more becoming "appliance operators" with little skill in 
how to assemble things like BNC connectors.

I have done my best to get my grandson Josh KJ4NYI interested in 
homebrewing (or at least kit building), and so far the results have been 
successful.  He has built a K1 and a K2, as well as many of the QRPme 
kits, and is currently building a KPA100.  He takes pride in his work 
and does a really good job of it.  I am working with him on 
troubleshooting steps and techniques - progress is OK, he does not yet 
understand all the theory, but at least he is trying to "put it all 
together" which is more than I can say for some of the questions 
presented on the common ham radio reflectors which seem to ask - "I 
don't want to look in the manual, just tell me how to operate this thing".

73,
Don W3FPR


On 8/17/2012 6:30 PM, Jim Brown wrote:
> On 8/17/2012 11:02 AM, Jack Smith wrote:
>> Some Chinese BNC male connectors don't properly mate with a
>> dimensionally correct BNC female.
> I'm a member of the AES Standards Committee Working Group on Connectors,
> and the Working Group includes representatives of major manufacturers of
> audio connectors, most notably Switchcraft and Neutrik.  Likewise,
> virtually all major mfrs of pro mics are represented in the Microphone
> Working Group, of which I am also a member.  Most of these manufacturers
> have major problems with counterfeits of their products, and dimensions
> are only one of the characteristics that don't meet specifications.
>
> Yet another reason for sticking to known quality manufacturers (and
> reputable distributors who buy direct from those manufacturers, not
> counterfeits) of this sort of product.
>
> 73, Jim K9YC
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Re: [Elecraft] Elecraft KPA500 vs Tokyo Hy-Power 1.1Kfx

[Fred Townsend]

Jim I'm not sure what you are looking for here. It is highly desirable to
use parts with a second source. That way if the factory burns down you are
not put out of business. That being said with RF parts the second source is
seldom identical hence the reference to the manufacturer. Manufacturing
processes differ from factory to factory. Sometimes the difference will be
noise or something you will have to look at a Smith chart to see. This makes
it difficult to interchange.   

A major problem with using quads (two push-pull pairs) is current sharing.
If more current flows in one transistor than the others it will get hotter
and possibly be pushed beyond specifications leading to failure. Failures
may 'domino' leading to secondary failures. Fortunately FETs have a negative
coefficient of resistivity which makes them much easier to balance, hence
their popularity in newer amps. 
73
Fred, AE6QL

-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Robbins, James
Sent: Friday, August 17, 2012 3:21 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] Elecraft KPA500 vs Tokyo Hy-Power 1.1Kfx

I am wondering if anyone has an explanation for why the Elecraft
KPA500 amplifier (500 watts) employs 2 VRF2933 FETs (Microsemi) in the final
PA where the THP uses 4 ST2933 FETs (STMicroelectronics) to generate very
similar power levels.  The data sheets for each FET indicate that both
brands are rated at 300-400 watts, support similar mismatches and run at
similar voltage maximums.  They have very similar specs all together.

Perhaps our amplifier gurus could weigh in here.  Much appreciated.

73,
Jim Robbins
N1JR

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Re: [Elecraft] Elecraft KPA500 vs Tokyo Hy-Power 1.1Kfx

[David Christ]

I myself am not qualified to judge the designs, but a friend of mine 
with decades of design experience at Rockwell Collins has been saying 
from the first revealing of the KPA500 design that he would have used 
4 devices not two.  If I understand his comments it relates to 
current density and voltage.  With only two of these devices he says 
you either have to run the voltage too high or have the current 
density too high in order to get 500 watts.  He does agree that the 
KPA500 is a nice amp but that he would have made different choices. 
He was designing military/aircraft gear and had to allow a big safety 
margin.

Hopefully a real engineer can tell me if this makes any sense.

David K0LUM

At 6:20 PM -0400 8/17/12, Robbins, James wrote:
>I am wondering if anyone has an explanation for why the Elecraft 
>KPA500 amplifier (500 watts) employs 2 VRF2933 FETs (Microsemi) in 
>the final PA where the THP uses 4 ST2933 FETs (STMicroelectronics) to 
>generate very similar power levels.  The data sheets for each FET 
>indicate that both brands are rated at 300-400 watts, support similar 
>mismatches and run at similar voltage maximums.  They have very 
>similar specs all together.
>
>Perhaps our amplifier gurus could weigh in here.  Much appreciated.
>
>73,
>Jim Robbins
>N1JR
>
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Re: [Elecraft] KX3 and 60 meters

[Fred Jensen]

On 8/17/2012 8:59 AM, Matthew Zilmer wrote:
>
> Be sure to put CW  at the
> channel center frequencies, if you  intend to use CW that is.

Likewise if you're going to run PSK31.  The FCC calls it "RTTY" but the 
emission designator is too narrow for 170Hz shift RTTY.  The basic rule 
on 60m is, "One QSO at a time per channel."

73,

Fred K6DGW
- Northern California Contest Club
- CU in the 2012 Cal QSO Party 6-7 Oct 2012
- www.cqp.org

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Re: [Elecraft] K3 Utility won't run on OSX 10.7.4 (Lion)

[Mercury]

Thank you, Dave. Removing the Preferences file did the trick. I should have 
known better than to question the software. You guys are the best.

73 - William, AI4VE
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Re: [Elecraft] Elecraft KPA500 vs Tokyo Hy-Power 1.1Kfx

[Joe Subich, W4TV]

> With only two of these devices he says you either have to run the
> voltage too high or have the current density too high in order to get
> 500 watts.

Since the VRF2933 is *designed* for the current necessary to produce
300 W each with proper cooling, one can not say the current density
is "too high".  The THP design with its four ST2933 is effectively
the old Granberg 4xMRF150 amplifier and no different than an Ameritron
ALS-600 with more expensive FETs that are not being used to their full
capability.

 > He was designing military/aircraft gear and had to allow a big safety
 > margin.

The military can afford to pay for redundancy - particularly in mission
critical applications - but such overkill is wasteful in commercial and
amateur applications.

73,

... Joe, W4TV


On 8/17/2012 7:31 PM, David Christ wrote:
> I myself am not qualified to judge the designs, but a friend of mine
> with decades of design experience at Rockwell Collins has been saying
> from the first revealing of the KPA500 design that he would have used
> 4 devices not two.  If I understand his comments it relates to
> current density and voltage.  With only two of these devices he says
> you either have to run the voltage too high or have the current
> density too high in order to get 500 watts.  He does agree that the
> KPA500 is a nice amp but that he would have made different choices.
> He was designing military/aircraft gear and had to allow a big safety
> margin.
>
> Hopefully a real engineer can tell me if this makes any sense.
>
> David K0LUM
>
> At 6:20 PM -0400 8/17/12, Robbins, James wrote:
>> I am wondering if anyone has an explanation for why the Elecraft
>> KPA500 amplifier (500 watts) employs 2 VRF2933 FETs (Microsemi) in
>> the final PA where the THP uses 4 ST2933 FETs (STMicroelectronics) to
>> generate very similar power levels.  The data sheets for each FET
>> indicate that both brands are rated at 300-400 watts, support similar
>> mismatches and run at similar voltage maximums.  They have very
>> similar specs all together.
>>
>> Perhaps our amplifier gurus could weigh in here.  Much appreciated.
>>
>> 73,
>> Jim Robbins
>> N1JR
>>
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Re: [Elecraft] Elecraft Price Increase - My 2 Cents

[Jack West]

How true...

I bought my K3 when Elecraft announced a price increase
was coming soon. It was my deciding factor.

73 de
Jack / W7LD / "Lucky Dog"

- Original Message - 
From: "Richard" 
To: "W0UCE" 
Cc: 
Sent: Friday, August 17, 2012 9:56 AM
Subject: Re: [Elecraft] Elecraft Price Increase - My 2 Cents


> And who announces the price increase so we can avoid it!
> 
> Thanks!
> 
> Rich
> NU6T
> 
> W0UCE  wrote:
> 
>>Just my 2 Cents: 
>>I feel there is no better value or bang for your buck than Elecraft and I
>>know of no other manufacturer that provides a level of service that compares
>>or comes close to Elecraft.
>>
>>73,
>>Jack W0UCE 
>>
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[Elecraft] K3 - Griffin Powermate/Contour Shuttle Pro

[Charles Sanders]

Roger --

I've used the Shuttle Pro to act as a multi-function tuning knob for my K3
using my CQ/X software as the controlling software -- see info at
www.no5w.com for details.

The Shuttle Pro can be configured to mimic any function keys or combination
of function keys so the only requirement is that the software that is
actually controlling the K3 support the appropriate function keys and
cursor keys, etc.

The Shuttle Pro is just another device for exercising those keys.

73/Chuck/NO5W
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Re: [Elecraft] P3 Hash

[Bill Frantz]

Nice job of Elmering Don.

I also must have done something right. My son ended up with a 
MSEE and still occasionally brings boards around to rework on my bench.

There is something magic about working someone a long ways away 
with a rig you built yourself. It must be an even greater thrill 
if you designed and built it yourself.

Cheers - Bill, AE6JV

On 8/17/12 at 15:53, w3...@embarqmail.com (Don Wilhelm) wrote:

>I have done my best to get my grandson Josh KJ4NYI interested 
>in homebrewing (or at least kit building), and so far the 
>results have been successful.
---
Bill Frantz|"After all, if the conventional wisdom was 
working, the
408-356-8506   | rate of systems being compromised would be 
going down,
www.pwpconsult.com | wouldn't it?" -- Marcus Ranum

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Re: [Elecraft] [OT] Digest reader recommendation

[David Dietrich]

Don Wilhelm is right about filters...I get the individual messages and 
filtering is the way to go.  Since I don't own a K3, I have all those messages 
immediately sent to "trash" (sorry) so my inbox isn't overwhelmed.  


73,

David
KC9EHQ




 From: Mark Kempisty 
To: "elecraft@mailman.qth.net"  
Sent: Friday, August 17, 2012 7:31 AM
Subject: [Elecraft] [OT] Digest reader recommendation
 
Going a bit off topic here but should still be relevant.

This is the only e-mail reflector I get in digest format (the others that I 
subscribe to only have a handful of messages a week so I get those one by one). 
Reading through the digest gets difficult at times.


Can anyone recommend an e-mail digest reader good for XP and later OS'es? The 
one or two I've found don't like the format of this digest for some strange 
reason and are no longer supported.

 
Take care,
Mark
AA3K
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[Elecraft] KPA 500

[William Levy]

I am not a design engineer or a technician.
Simply a ham for 51 years or so.

I have always loved 500 watt amps. My first was a Collins 30L-1.
Still have it.
Bought the first 12 volt solid state amp from Trans World Communications.
Still have it.
Bought the Icom AT 500.
Still have it.
Bought the SGC 500 watt Power Cube.
Still have it.
Have the Ten Tec Hercules 2.
Still have it.
Using the HECK out of the KPA 500.


I have managed to blow up a 30L-1 or suffice to say some grid resistors died 
and had to be replaced.
I have used these 500 watt amps mobile into great and lousy excuses for 
antennas. 

I have yet to blow up a 500 watt solid state amp. 
Still waiting too. Must be possible. 

So the blah blah about the KPA500 not being Mil Spec and having enough amp 
transistors is just blah blah.
It's nothing different then all the blah blah we here from the politicians who 
think we don't know the truth or history.

The bottom line is that my KPA500 works flawlessly. It faults into hi swr, it 
runs on 115 or so VAC and frankly there isn't much difference in the signal I 
get far and near compared to my 8877's. 

Frankly, I compare the KPA500 to the Collins 30L-1. They were both compromises 
and they both work brilliantly.
Perhaps I can blow up the KPA500 running RTTY. Can't do that with a 30L-1

73 all,
N2WL


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[Elecraft] [K3] Macro with UP/DN parameter changes?

[w9rit]

Hello,
 
I am trying to create a K3 remote control command string (or macro) to turn 
on/off the text decode. The K3 release notes and the programmers manual show 
this is possible, but I can not get it to work.
 
Back in 2008, the release notes for (MCU 1.68) highlight that the "UP" and "DN" 
remote control commands now work for parameter setup, such as NB, TEXT DEC, 
DATA MD, NR ADJ, etc. Adding 'B' (e.g., "UPB;", "DNB;") controls the VFO B 
parameter; otherwise, the VFO A parameter is controlled.
 
With my "Text Dec" set at "CW30-90". I have tried this command string 
SWH40;DNB;DNB;DNB;SWT40; to hold the TEXT DEC, turn vfo b three selections, and 
tap TEXT DEC. The SWH and SWT commands work but the vfo commands do not. 
 
Maybe, I am missing something? Can anyone else confirm that these "VFO UP/DN 
Parameter controls" work in K3 Release 4.48 or higher?
 
Thanks for your help,
 
73 - Dave W9RIT
K3 #3177



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Re: [Elecraft] Elecraft KPA500 vs Tokyo Hy-Power 1.1Kfx

[David Christ]

I think I was not clear and am possibly being misunderstood.  First, 
I own a KPA500 and couldn't be happier.  Second, in no way am I 
saying there is anything wrong with the KPA500 design.  The question 
was if the power levels are the same and the individual device 
capabilities are similar, why would one use 2 or 4 devices.  I merely 
reported what one experienced designer told me would cause him to use 
4 devices.  Was he right or wrong?  Probably neither.  As I indicated 
he was used to designing for a different market with a different 
cost/reliability model.  If you are cost driven you will run closer 
to device maximums.  If you wish to go for long life and a lower 
chance of failure you derate devices.



David K0LUM

At 8:10 PM -0400 8/17/12, Joe Subich, W4TV wrote:
>  > With only two of these devices he says you either have to run the
>>  voltage too high or have the current density too high in order to get
>>  500 watts.
>
>Since the VRF2933 is *designed* for the current necessary to produce
>300 W each with proper cooling, one can not say the current density
>is "too high".  The THP design with its four ST2933 is effectively
>the old Granberg 4xMRF150 amplifier and no different than an Ameritron
>ALS-600 with more expensive FETs that are not being used to their full
>capability.
>
>  > He was designing military/aircraft gear and had to allow a big safety
>  > margin.
>
>The military can afford to pay for redundancy - particularly in mission
>critical applications - but such overkill is wasteful in commercial and
>amateur applications.
>
>73,
>
> ... Joe, W4TV
>
>
>On 8/17/2012 7:31 PM, David Christ wrote:
>>  I myself am not qualified to judge the designs, but a friend of mine
>>  with decades of design experience at Rockwell Collins has been saying
>>  from the first revealing of the KPA500 design that he would have used
>>  4 devices not two.  If I understand his comments it relates to
>>  current density and voltage.  With only two of these devices he says
>>  you either have to run the voltage too high or have the current
>>  density too high in order to get 500 watts.  He does agree that the
>>  KPA500 is a nice amp but that he would have made different choices.
>>  He was designing military/aircraft gear and had to allow a big safety
>>  margin.
>>
>>  Hopefully a real engineer can tell me if this makes any sense.
>>
>>  David K0LUM
>>
>>  At 6:20 PM -0400 8/17/12, Robbins, James wrote:
>>>  I am wondering if anyone has an explanation for why the Elecraft
>>>  KPA500 amplifier (500 watts) employs 2 VRF2933 FETs (Microsemi) in
>>>  the final PA where the THP uses 4 ST2933 FETs (STMicroelectronics) to
>>>  generate very similar power levels.  The data sheets for each FET
>>>  indicate that both brands are rated at 300-400 watts, support similar
>>>  mismatches and run at similar voltage maximums.  They have very
>>>  similar specs all together.
>>>
>>>  Perhaps our amplifier gurus could weigh in here.  Much appreciated.
>>>
>>>  73,
>>>  Jim Robbins
>>>  N1JR
>>>
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[Elecraft] KPA500 on AM?

[Ralph Parker]

I don't 'do' any digital modes, but I understand that the KPA500 can run
pretty much full-tilt-boogie on RTTY.
Anyone tried it on AM? Might be nice with a Ranger.
I've gotta do something until I get that 813 amp built, and the KPA500 is
just sitting there on the shelf...

Ralph, VE7XF

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[Elecraft] KX3 - Pandapter woes

[Buck k4ia]

I am having a devil of a time with my KX3 and NaP3 running through an 
EM0202 outboard soundcard.  It works great with my K3 to an LpPan 
pandapter.

With the KX3, I get a big blip in the middle and mirror images on either 
side that move along with the tuning.  I have tried reversing the I/Q. 
This is telling me there is something wrong with the cables but I have 
switched them out, including the 2.5>3.5 adapter to no avail.  Now, I am 
suspecting the I/Q jack on the KX3 but that seem unlikely.

Anyone have an idea for me to try?

-- 
Buck
k4ia
K3 # 101  KX3 #715
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Re: [Elecraft] Elecraft KPA500 vs Tokyo Hy-Power 1.1Kfx

[Joe Subich, W4TV]

> The question was if the power levels are the same and the individual
> device capabilities are similar, why would one use 2 or 4 devices.

Using four devices instead of two makes cooling system design somewhat
less critical.  On the other hand, four FETs instead of two makes the
biasing much more critical (current balance), makes transformer design
more difficult due to the higher capacitance involved and makes the
amplifier marginally less stable.

73,

... Joe, W4TV


On 8/17/2012 10:18 PM, David Christ wrote:
> I think I was not clear and am possibly being misunderstood.  First,
> I own a KPA500 and couldn't be happier.  Second, in no way am I
> saying there is anything wrong with the KPA500 design.  The question
> was if the power levels are the same and the individual device
> capabilities are similar, why would one use 2 or 4 devices.  I merely
> reported what one experienced designer told me would cause him to use
> 4 devices.  Was he right or wrong?  Probably neither.  As I indicated
> he was used to designing for a different market with a different
> cost/reliability model.  If you are cost driven you will run closer
> to device maximums.  If you wish to go for long life and a lower
> chance of failure you derate devices.
>
>
>
> David K0LUM
>
> At 8:10 PM -0400 8/17/12, Joe Subich, W4TV wrote:
>>   > With only two of these devices he says you either have to run the
>>>   voltage too high or have the current density too high in order to get
>>>   500 watts.
>>
>> Since the VRF2933 is *designed* for the current necessary to produce
>> 300 W each with proper cooling, one can not say the current density
>> is "too high".  The THP design with its four ST2933 is effectively
>> the old Granberg 4xMRF150 amplifier and no different than an Ameritron
>> ALS-600 with more expensive FETs that are not being used to their full
>> capability.
>>
>>   > He was designing military/aircraft gear and had to allow a big safety
>>   > margin.
>>
>> The military can afford to pay for redundancy - particularly in mission
>> critical applications - but such overkill is wasteful in commercial and
>> amateur applications.
>>
>> 73,
>>
>>  ... Joe, W4TV
>>
>>
>> On 8/17/2012 7:31 PM, David Christ wrote:
>>>   I myself am not qualified to judge the designs, but a friend of mine
>>>   with decades of design experience at Rockwell Collins has been saying
>>>   from the first revealing of the KPA500 design that he would have used
>>>   4 devices not two.  If I understand his comments it relates to
>>>   current density and voltage.  With only two of these devices he says
>>>   you either have to run the voltage too high or have the current
>>>   density too high in order to get 500 watts.  He does agree that the
>>>   KPA500 is a nice amp but that he would have made different choices.
>>>   He was designing military/aircraft gear and had to allow a big safety
>>>   margin.
>>>
>>>   Hopefully a real engineer can tell me if this makes any sense.
>>>
>>>   David K0LUM
>>>
>>>   At 6:20 PM -0400 8/17/12, Robbins, James wrote:
   I am wondering if anyone has an explanation for why the Elecraft
   KPA500 amplifier (500 watts) employs 2 VRF2933 FETs (Microsemi) in
   the final PA where the THP uses 4 ST2933 FETs (STMicroelectronics) to
   generate very similar power levels.  The data sheets for each FET
   indicate that both brands are rated at 300-400 watts, support similar
   mismatches and run at similar voltage maximums.  They have very
   similar specs all together.

   Perhaps our amplifier gurus could weigh in here.  Much appreciated.

   73,
   Jim Robbins
   N1JR

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>>>
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Re: [Elecraft] Elecraft KPA500 vs Tokyo Hy-Power 1.1Kfx

[Ron D'Eau Claire]

Things such as the input capacitance of the devices plays a huge role in the
design too. As a general rule, more capacitance is an issue as one goes up
in frequency. Twice as many devices means twice the input capacitance. 

And then there's the issue of ensuring equal power sharing between the
devices. Doubling the number of devices more than doubles the circuit
complexity. 

I played no part in the design of the KPA500 so I'll leave it there without
speculating on the design choices made. 

73, Ron AC7AC

-Original Message-
I think I was not clear and am possibly being misunderstood.  First, I own a
KPA500 and couldn't be happier.  Second, in no way am I saying there is
anything wrong with the KPA500 design.  The question was if the power levels
are the same and the individual device capabilities are similar, why would
one use 2 or 4 devices.  I merely reported what one experienced designer
told me would cause him to use
4 devices.  Was he right or wrong?  Probably neither.  As I indicated he was
used to designing for a different market with a different cost/reliability
model.  If you are cost driven you will run closer to device maximums.  If
you wish to go for long life and a lower chance of failure you derate
devices.



David K0LUM


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[Elecraft] OT: Tokyo Ham Fair 2012

[Johnny Siu]

Hello Elecrafters,
 
I am going to Tokyo Ham Fair 2012 next week.  I am possibly wondering around 
the A1 Club, Tokyo International Amateur Radio Association, JARL and Icom 
booths.  If you get the chance to 'catch' me, please feel free to say 'hello' 
to me and have an eye ball qso.
 
cheers,

TNX & 73,


Johnny VR2XMC
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Re: [Elecraft] Elecraft KPA500 vs Tokyo Hy-Power 1.1Kfx

[Bob Henderson]

Jim

The ST SD2933 and Microsemi VRF2933 are only superficially similar.

The key differentiator is drain source breakdown voltage, which for the
SD2933 is 130V but for the VRF2933 is typically 180V.

The THP 550fx was designed using SD2933 devices but failures were high.  I
have met several dead HL550fx amps on my trips to the Pacific.  The
THP1.1kfx is essentially the same amp.  THP now use devices marked
THP2933.  I can't say with absolute certainty but I believe these to be
VRF2933.

Running the VRF2933 from a 60V supply is a good idea.  Doing the same with
SD2933 isn't such a good one.

73 Bob, 5B4AGN



Date: Fri, 17 Aug 2012 18:20:39 -0400
From: "Robbins, James" 
Subject: [Elecraft] Elecraft KPA500 vs Tokyo Hy-Power 1.1Kfx
To: elecraft@mailman.qth.net
Message-ID: <45b49d8f-baf4-4b94-81fe-7690a8f9b...@earthlink.net>
Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed

I am wondering if anyone has an explanation for why the Elecraft
KPA500 amplifier (500 watts) employs 2 VRF2933 FETs (Microsemi) in
the final PA where the THP uses 4 ST2933 FETs (STMicroelectronics) to
generate very similar power levels.  The data sheets for each FET
indicate that both brands are rated at 300-400 watts, support similar
mismatches and run at similar voltage maximums.  They have very
similar specs all together.

Perhaps our amplifier gurus could weigh in here.  Much appreciated.

73,
Jim Robbins
N1JR
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[Elecraft] KX3 Amazed by it

[KC6CNN]

I am amazed by this little radio. 
Tonight I decided to operate at the Ranch with it. 
Wind Turbine and Solar power to my 900 amp hour bank of batteries. 
I got here late so I put up a double bazooka antenna on twenty meters. 
The antenna is only 16 feet up in an inverted vee configuration. 
The KX3 at 5 watts running my signalink and HRD I made two awesome qso's.
One to bosnia, and one to hungry. on 5 watts. got good signal reports also. 
When a station started transmitting next to me, I was able to narrow the
band width and he no longer
bothered my qso. 
Thank you Elecraft for such a fine little radio. 
73's Gerald - KC6CNN



-
KC6CNN - Gerald
K2
K3
KX3

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Re: [Elecraft] KX3 - Pandapter woes

[Lyle Johnson]

Buck,

Time to isolate.

Connect up the KX3 2.5 mm jack to the EMU-0202 as normal.

Instead of running NaP3, run an application that lets you see or hear 
each channel of the EMU-0202. Maybe one of the apps that was bundled 
with the EMU, or maybe one of the many sound editor programs.  Maybe 
NaP3 lets you do this, I don't know.  The whole idea is to see which 
channel of the EMU is getting audio fromthe KX3.

Now, swap the cables at the EMU-0202.  Since this uses a pair of 6.5 mm 
mono jacks, they are easy to swap.  See if the prtoblem moves to the 
other channel.  If so, verify the cable with an ohmmeter -- the problem 
is the cable or the KX3.  If not, the problem is the EMU-0202.

Finally, if it is the cable or the KX3, do the usual jiggling of the 
cable, etc. to see if it is just poor contact or ?

Hope this helps, sorry for the problem you are having.

73,

Lyle KK7P

> I am having a devil of a time with my KX3 and NaP3 running through an
> EM0202 outboard soundcard.  It works great with my K3 to an LpPan
> pandapter.
>
> With the KX3, I get a big blip in the middle and mirror images on either
> side that move along with the tuning.  I have tried reversing the I/Q.
> This is telling me there is something wrong with the cables but I have
> switched them out, including the 2.5>3.5 adapter to no avail.  Now, I am
> suspecting the I/Q jack on the KX3 but that seem unlikely.
>
> Anyone have an idea for me to try?
>

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Re: [Elecraft] KX3 - Pandapter woes

[Ignacy]

I got the same results initially with a laptop using HDSDR. Turned out it had
a mono input. A bit better picture with a default sound card on desktop.
Then ran sound card calibration in HDSDR to decrease image and the center
has disappeared.

Now HDSDR works very well; adding frequency display by OmniRig is simple.
The effective range is 45KHz. Not sure this is limit of my sound card or IQ
in KX3.

No complains as free I/Q in KX3 is icing on the cake. 

Ignacy



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[Elecraft] Elecraft Price Increase - My 2 Cents

[eric manning]

Interestingly, I have  never compared Elecraft prices (K2, K3 and KX3) 
with competitive radios.
Perhaps that is because I didn't see any genuine competitors to

the K2 - a kit! plus a great little cw rig,
  the  K3 - also a kit, plus
great specs, nice size,  great support, and leading DXers and contesters 
using it, or
the KX3 - is there anything remotely close to  it out there?

So  in  my  case   the competition is not acting as a brake on price 
increases. There isn't any.
So, Elecraftcan raise prices until  I decide I can't afford the  radio 
and take up stamp collecting.

( Maybe I shouldn't have said that  out  loud!)

Eric
VA7DZ

-- 

"Democracy depends on well-informed voters;
absent that, it is all mud flowing down hill."
--Charles Harpole
  


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[Elecraft] P3 hash

[Gene Trasti]

Thanks to all that responded.  The problem was indeed the BNC cable provided by 
Elecraft.  Wish I had posted my problem a little sooner-I would have saved a 
lot of time and effort.  Once it was drawn to my attention I noticed that the 
BNC connectors on the cables provided by Elecraft had a loose fit on the K3 and 
P3.  I Used an older cable out of my junk drawer, the BNC connectors had a 
tighter fit and the hash on the P3 cleaned up instantly.

Gene w6jmp

Sent from my iPad
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