[Elecraft] MD2 and K3 Rear Connector

[John Huffman]

Hi -

I would like to hook my Elecraft MD2 to the rear microphone connector of 
my K3.

I'll get a small box and mount a male 8-pin connector on one end for the 
microphone and a cable to a 1/8" plug (stereo or mono?) on the other end 
to plug into the K3 rear panel.

What pins get connected?  How is bias connected?  Does someone already 
make this adapter?

73 de K1ESE
John
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[Elecraft] K2 Use of KUSB cable with the K2

[KM4VX]

I realize this topic is not new, but it is confusing to review the archives
when searching this question. The KUSB is sold to support the K3. It is not
advertised to support the K2. Can it be used out of the box to support the
K2? Can I plug it into the serial port of the K2 (okay not a real serial
port  but looks like it) and then connect it to a USB port on my laptop
without damaging the K2? I thought there might be a good  reason why
ELECRAFT does not list it for use with the K2 as well as the K3. I seem to
recall a warning about damaging the K2 when using the wrong interface, but
can't find it in the K2 manual or module building instructions. Any help
would be appreciated. Many thanks, and this reflector is addictive! Ron
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Re: [Elecraft] MD2 and K3 Rear Connector

[David Ferrington, M0XDF]

If your going to the trouble of getting the 8 pin connector, why not get a line 
end on and save on the box, the drilling and the space that will use up?
73 de M0XDF, K3 #174 
-- 
If you have the same ideas as everybody else but have them one week earlier
than everyone else then you will be hailed as a visionary. But if you have
them five years earlier you will be named a lunatic. -Barry Jones,
politician, author (1932- )

On 29 Jan 2010, at 11:39, John Huffman wrote:

> Hi -
> 
> I would like to hook my Elecraft MD2 to the rear microphone connector of 
> my K3.
> 
> I'll get a small box and mount a male 8-pin connector on one end for the 
> microphone and a cable to a 1/8" plug (stereo or mono?) on the other end 
> to plug into the K3 rear panel.
> 
> What pins get connected?  How is bias connected?  Does someone already 
> make this adapter?

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Re: [Elecraft] K2 Use of KUSB cable with the K2

[Brian Machesney]

Ron,

This topic has been discussed over just the past few days here on the
reflector.

Apparently, people are having different experiences. My K2 works by plugging
the K2's   ** serial cable **   into the end of the KUSB cable and setting
up the application software to run at 4800 / N / 8 / 1.

It seems that ONE SHOULD NOT PLUG THE KUSB INTO THE K2'S AUXIO JACK for risk
of damage to the K2.

73 -- Brian -- K1LI

On Fri, Jan 29, 2010 at 6:20 AM, KM4VX  wrote:

>
> I realize this topic is not new, but it is confusing to review the archives
> when searching this question. The KUSB is sold to support the K3. It is not
> advertised to support the K2. Can it be used out of the box to support the
> K2? Can I plug it into the serial port of the K2 (okay not a real serial
> port  but looks like it) and then connect it to a USB port on my laptop
> without damaging the K2? I thought there might be a good  reason why
> ELECRAFT does not list it for use with the K2 as well as the K3. I seem to
> recall a warning about damaging the K2 when using the wrong interface, but
> can't find it in the K2 manual or module building instructions. Any help
> would be appreciated. Many thanks, and this reflector is addictive! Ron
> --
>
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[Elecraft] SDR-IQ, Etherlogic and CW via serial

[Ignacy]

I used CW keyeing via serial successfuly. Now after splitting the port via
Eterlogic to connect SDR-IQ, it does not work.

Did anybody get it to work?

Would LP-Bridge work?

Would it cause timing problems?

Ignacy, NO9E
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[Elecraft] K3 1.5Khz filter user?

[Barry N1EU]

I have a request for anyone out there using the Inrad 1.5Khz narrow ssb
filter and who can make a simple .wav recording.  Please set width to 1.5Khz
and tune to an empty part of the band and make a 10 second recording of just
band noise with RX EQ flat, and email me the .wav file.

I'll make a high quality passband plot and post for all to see.

Thanks & 73,
Barry N1EU
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Re: [Elecraft] K2 Use of KUSB cable with the K2

[Don Wilhelm]

Ron, Brian,

Yes, that is correct - the KUSB should not be plugged directly into the 
back of the K2 - the K2 can be damaged.
All that uses a DB-9 connector is NOT a serial port connection, the K2 
is clearly labeled AUX I/O.
Use the K2 defined cable to plug into the KUSB and all will be OK (if 
your KUSB works OK at the 4800 baud rate.

73,
Don W3FPR

Brian Machesney wrote:
> Ron,
>
> It seems that ONE SHOULD NOT PLUG THE KUSB INTO THE K2'S AUXIO JACK for risk
> of damage to the K2.
>
> 73 -- Brian -- K1LI
>
> On Fri, Jan 29, 2010 at 6:20 AM, KM4VX  wrote:
>
>   
>> I realize this topic is not new, but it is confusing to review the archives
>> when searching this question. The KUSB is sold to support the K3. It is not
>> advertised to support the K2. Can it be used out of the box to support the
>> K2? Can I plug it into the serial port of the K2 (okay not a real serial
>> port  but looks like it) and then connect it to a USB port on my laptop
>> without damaging the K2? I thought there might be a good  reason why
>> ELECRAFT does not list it for use with the K2 as well as the K3. I seem to
>> recall a warning about damaging the K2 when using the wrong interface, but
>> can't find it in the K2 manual or module building instructions. Any help
>> would be appreciated. Many thanks, and this reflector is addictive! Ron
>> --
>>
>> 
>
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Re: [Elecraft] BNC Connectors

[Phil & Debbie Salas]

"Ok so if I was looking for a relatively universal crimp tool to meet 2most 
of my needs...  (I'm big on if I'm going to buy something I want it to do 
many things)... ;) I was looking into this crimp tool..
http://www.westmountainradio.com/PWRcrimp.htm";.

The only issue I see is that it apparently doesn't crimp the coax center 
pins.  So you'd need to always get the solder-on center pin connector.

Phil - AD5X 

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[Elecraft] cqww 160m contest

[chen dave]

Hello all,
   Anyone will take part in the cqww 160m contest?
  Waiting for K3 to K3 qso on top bands.

73 de ba4rf,David
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[Elecraft] Arctic Silver - anyone using it instead of thermal-pads?

[dw]

Hey Gang,
Anyone using Acrtic Silver instead of the thermal pads on the 2879s?

Interested in your comments.

Tnx,
Mr. D
N1BBR
-- 
 bw...@fastmail.net

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[Elecraft] K2: connecting a condenser mic

[Brian Machesney]

I have a condenser mic that is not on the list of "known" mics in the docs
or on the Elecraft web site. I'm trying to decide whether to simply short
the +5V to the AF when connecting my condenser mic to the KSB2, or to place
a resistor in between. I am more concerned about potential long-term adverse
effects on the mic element by operating it out-of-spec than I am concerned
with damaging the K2.

A DMM shows the DC resistance of the element to be 400 Kohms! Not really
surprising, I guess, since a condenser mic is electrically similar to a
capacitor.

The manufacturer specs the mic element at 4.5Kohms and 1.5V to 9.0V bias.
Applying the KSB2's +5V directly to the mic element's 4.5K ohms should
produce 1mA drain, no sweat for the KSB2, and right in the middle of the
manufacturer's applied DC voltage spec.

The manufacturer's tech sent me a wiring diagram that shows a +12V supply
with a series resistor between 470 and 2.2K ohms to the mic. The 470 ohm
resistor would apply nearly 11V to the mic, if the mic element and the
series act as a pure voltage divider. The 2.2K ohm resistor would produce 8V
at the mic.

The KSB2 schematic shows a 2.2uF electrolytic cap between the MIC AF and the
rest of the KSB2, so I wouldn't think there's any risk of a short.

Help from those in the know, please?

-- 
73 -- Brian -- K1LI
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Re: [Elecraft] This reflector is very nice

[K2QI]

Hi Bob,

Glad you finally made it over to the dark side. We have cookies.

The reflector is a great resource for Elecrafters.  Trying to solicit
information about the K3 on other forums, ala the Zed can sometimes be
painful.  Expect to receive the usual grumblings from old men saying "why do
you need to spend that much money on a rig when you can have a Hallicrafters
or FT-101 instead?"

Anyway, welcome and enjoy the madness.  Got your anti-static mat ready?

Vy 73 de James K2QI



On Thu, Jan 28, 2010 at 6:42 PM, Bob Stonesifer wrote:

> While I have had a K1 for quite a while, I have never posted on the
> reflector. It is a pretty straight forward little rig, and I never
> really had any issues.
>
> And to be honest, the reflector always seemed a bit strange in
> operation.
>
> But now that I have a K3 on the way, I figured I will be doing some
> posting, as it is a complex rig compared to the K1.
>
> So now that I figured out how to post, I can see that it may be a bit
> strange compared to most forums, but works very well.
>
> And the Elecraft community is a nice bunch of hams.
>
> Checking UPS, the K3 just left Sparks, NV at 11:30 am.  Am I excited or
> what. :>)
>
> Don't crash UPS man
>
>
>
>
>
>
>
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Re: [Elecraft] cqww 160m contest

[Dale Putnam]

Would a K3 to K2 Q work? My K2 would like that.

Good luck in the contest, hpe to cu there,

--... ...-- Dale - WC7S in Wy


 
> Date: Fri, 29 Jan 2010 21:20:10 +0800
> From: lowb...@gmail.com
> To: elecraft@mailman.qth.net
> Subject: [Elecraft] cqww 160m contest
> 
> Hello all,
> Anyone will take part in the cqww 160m contest?
> Waiting for K3 to K3 qso on top bands.
> 
> 73 de ba4rf,David
  
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Re: [Elecraft] Arctic Silver - anyone using it instead of thermal-pads?

[Don Wilhelm]

Duane,

I really don't understand why anyone would want to use that white gooey 
messy stuff that sticks to everything and jumps off where it was placed 
to get all over one's clothing and skin!
The supplied thermal pads are supposed to provide better heat 
conductivity than all the thermal grease in the world!
'Nuff said.

Don W3FPR

dw wrote:
> Hey Gang,
> Anyone using Acrtic Silver instead of the thermal pads on the 2879s?
>
> Interested in your comments.
>
> Tnx,
> Mr. D
> N1BBR
>   
>   
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Re: [Elecraft] cqww 160m contest

[chen dave]

K2 for sure. See you in contest.

73 de ba4rf,David

2010/1/29 Dale Putnam 

>  Would a K3 to K2 Q work? My K2 would like that.
> Good luck in the contest, hpe to cu there,
>
> --... ...-- Dale - WC7S in Wy
>
>
>
> > Date: Fri, 29 Jan 2010 21:20:10 +0800
> > From: lowb...@gmail.com
> > To: elecraft@mailman.qth.net
> > Subject: [Elecraft] cqww 160m contest
>
> >
> > Hello all,
> > Anyone will take part in the cqww 160m contest?
> > Waiting for K3 to K3 qso on top bands.
> >
> > 73 de ba4rf,David
>
> --
> Your E-mail and More On-the-Go. Get Windows Live Hotmail Free. Sign up
> now. 
>



-- 


All the best!

David,ba4rf
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Re: [Elecraft] K2: connecting a condenser mic

[Don Wilhelm]

Brian,

Is that a 3 terminal mic element?  If so, then you can follow the 
manufacturer's instructions and apply the 5 volts to the voltage 
terminal on the element.
OTOH, most of these elements are 2 terminal, and the voltage should be 
applied to the AF pin through a resistor - try 5.6k like the Elecraft 
MH2 uses as a first trial, it will likely work because the resistance is 
not critical.
If you try to connect the 5 volts directly to the AF terminal, you will 
effectively bypass all the audio to ground.  For AC signals, a power 
rail is jst the same as ground because there are large bypass capacitors 
on the voltage rail.

73,
Don W3FPR

Brian Machesney wrote:
> I have a condenser mic that is not on the list of "known" mics in the docs
> or on the Elecraft web site. I'm trying to decide whether to simply short
> the +5V to the AF when connecting my condenser mic to the KSB2, or to place
> a resistor in between. I am more concerned about potential long-term adverse
> effects on the mic element by operating it out-of-spec than I am concerned
> with damaging the K2.
>
> A DMM shows the DC resistance of the element to be 400 Kohms! Not really
> surprising, I guess, since a condenser mic is electrically similar to a
> capacitor.
>
> The manufacturer specs the mic element at 4.5Kohms and 1.5V to 9.0V bias.
> Applying the KSB2's +5V directly to the mic element's 4.5K ohms should
> produce 1mA drain, no sweat for the KSB2, and right in the middle of the
> manufacturer's applied DC voltage spec.
>
> The manufacturer's tech sent me a wiring diagram that shows a +12V supply
> with a series resistor between 470 and 2.2K ohms to the mic. The 470 ohm
> resistor would apply nearly 11V to the mic, if the mic element and the
> series act as a pure voltage divider. The 2.2K ohm resistor would produce 8V
> at the mic.
>
> The KSB2 schematic shows a 2.2uF electrolytic cap between the MIC AF and the
> rest of the KSB2, so I wouldn't think there's any risk of a short.
>
> Help from those in the know, please?
>   
>
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Re: [Elecraft] Arctic Silver - anyone using it instead of thermal-pads?

[K2QI]

Slightly OT, but when it comes to processors, there's no way I'd use a
thermal pad.

A thin layer of Arctic Silver is a far better heat conductor than any
thermal pad available.

I see no downside to using AS on any FET apart from the potential mess, but
the trick is to use a small amount.  A little goes a long way with that
stuff.

James K2QI

On Fri, Jan 29, 2010 at 9:25 AM, Don Wilhelm  wrote:

> Duane,
>
> I really don't understand why anyone would want to use that white gooey
> messy stuff that sticks to everything and jumps off where it was placed
> to get all over one's clothing and skin!
> The supplied thermal pads are supposed to provide better heat
> conductivity than all the thermal grease in the world!
> 'Nuff said.
>
> Don W3FPR
>
>
>
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Re: [Elecraft] K2: connecting a condenser mic

[Brian Machesney]

Thanks, Don.

Not knowing any better, I simply shorted the AF and MICBIAS when I connected
the mic to the K3. From what I can see in the K3 schematics, the only
bypassing on the MICBIAS line is 1uF (rev B, sheet 5 of 7, "Front Panel -
Miscellaneous"). Can I build the same resistor into the mic plug and use it
that way for both the K2 and K3?

Brian K1LI

On Fri, Jan 29, 2010 at 9:34 AM, Don Wilhelm  wrote:

> Brian,
>
> Is that a 3 terminal mic element?  If so, then you can follow the
> manufacturer's instructions and apply the 5 volts to the voltage terminal on
> the element.
> OTOH, most of these elements are 2 terminal, and the voltage should be
> applied to the AF pin through a resistor - try 5.6k like the Elecraft MH2
> uses as a first trial, it will likely work because the resistance is not
> critical.
> If you try to connect the 5 volts directly to the AF terminal, you will
> effectively bypass all the audio to ground.  For AC signals, a power rail is
> jst the same as ground because there are large bypass capacitors on the
> voltage rail.
>
> 73,
> Don W3FPR
>
>
> Brian Machesney wrote:
>
>> I have a condenser mic that is not on the list of "known" mics in the docs
>> or on the Elecraft web site. I'm trying to decide whether to simply short
>> the +5V to the AF when connecting my condenser mic to the KSB2, or to
>> place
>> a resistor in between. I am more concerned about potential long-term
>> adverse
>> effects on the mic element by operating it out-of-spec than I am concerned
>> with damaging the K2.
>>
>> A DMM shows the DC resistance of the element to be 400 Kohms! Not really
>> surprising, I guess, since a condenser mic is electrically similar to a
>> capacitor.
>>
>> The manufacturer specs the mic element at 4.5Kohms and 1.5V to 9.0V bias.
>> Applying the KSB2's +5V directly to the mic element's 4.5K ohms should
>> produce 1mA drain, no sweat for the KSB2, and right in the middle of the
>> manufacturer's applied DC voltage spec.
>>
>> The manufacturer's tech sent me a wiring diagram that shows a +12V supply
>> with a series resistor between 470 and 2.2K ohms to the mic. The 470 ohm
>> resistor would apply nearly 11V to the mic, if the mic element and the
>> series act as a pure voltage divider. The 2.2K ohm resistor would produce
>> 8V
>> at the mic.
>>
>> The KSB2 schematic shows a 2.2uF electrolytic cap between the MIC AF and
>> the
>> rest of the KSB2, so I wouldn't think there's any risk of a short.
>>
>> Help from those in the know, please?
>>
>
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[Elecraft] Yaesu Mics on a K3?

[Dean]

All of my mics are set up for standard Yaesu hf rigs including an MD-100 and an 
MH-31. My K2 was set up for this configuration too.

Is it feasible to configure the K3 to use these mics? Or do I need to change 
all of the mic configurations?

Thanks!

Dean
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Re: [Elecraft] Yaesu Mics on a K3?

[Don Wilhelm]

Dean,

The K3 is permanently wired for the Elecraft mic configuration, so you 
must either create an adapter or rewire your microphones for the 
Elecraft pinout.  If you choose to rewire the microphones, you will have 
to change your K2 as well if you wish to use the same mic on both.

After answering many questions about how to set the K2 microphone 
configuration header for a wide variety of mics, I for one am glad that 
the K3 does not have a configurable mic pinout.

The K3 microphone jack pinout is in the K3 manual.

73,
Don W3FPR

Dean wrote:
> All of my mics are set up for standard Yaesu hf rigs including an MD-100 and 
> an MH-31. My K2 was set up for this configuration too.
>
> Is it feasible to configure the K3 to use these mics? Or do I need to change 
> all of the mic configurations?
>
> Thanks!
>
> Dean
>   
>
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Re: [Elecraft] K2: connecting a condenser mic

[Don Wilhelm]

Brian,

You *could* put the resistor in the mic plug, but I would think it 
easier to add the resistor in the K2 to the back of the microphone jack 
between pin 1 and pin 6 as is normally done.  In the K3, you simply turn 
Bias on in the menu.

If you choose to put the resistor in the mic plug, run the K3 without 
Bias selected, it will pick up the voltage from pin 6

73,
Don W3FPR

Brian Machesney wrote:
> Thanks, Don.
>
> Not knowing any better, I simply shorted the AF and MICBIAS when I connected
> the mic to the K3. From what I can see in the K3 schematics, the only
> bypassing on the MICBIAS line is 1uF (rev B, sheet 5 of 7, "Front Panel -
> Miscellaneous"). Can I build the same resistor into the mic plug and use it
> that way for both the K2 and K3?
>
> Brian K1LI
>
> On Fri, Jan 29, 2010 at 9:34 AM, Don Wilhelm  wrote:
>
>   
>> Brian,
>>
>> Is that a 3 terminal mic element?  If so, then you can follow the
>> manufacturer's instructions and apply the 5 volts to the voltage terminal on
>> the element.
>> OTOH, most of these elements are 2 terminal, and the voltage should be
>> applied to the AF pin through a resistor - try 5.6k like the Elecraft MH2
>> uses as a first trial, it will likely work because the resistance is not
>> critical.
>> If you try to connect the 5 volts directly to the AF terminal, you will
>> effectively bypass all the audio to ground.  For AC signals, a power rail is
>> jst the same as ground because there are large bypass capacitors on the
>> voltage rail.
>>
>> 73,
>> Don W3FPR
>>
>>
>> Brian Machesney wrote:
>>
>> 
>>> I have a condenser mic that is not on the list of "known" mics in the docs
>>> or on the Elecraft web site. I'm trying to decide whether to simply short
>>> the +5V to the AF when connecting my condenser mic to the KSB2, or to
>>> place
>>> a resistor in between. I am more concerned about potential long-term
>>> adverse
>>> effects on the mic element by operating it out-of-spec than I am concerned
>>> with damaging the K2.
>>>
>>> A DMM shows the DC resistance of the element to be 400 Kohms! Not really
>>> surprising, I guess, since a condenser mic is electrically similar to a
>>> capacitor.
>>>
>>> The manufacturer specs the mic element at 4.5Kohms and 1.5V to 9.0V bias.
>>> Applying the KSB2's +5V directly to the mic element's 4.5K ohms should
>>> produce 1mA drain, no sweat for the KSB2, and right in the middle of the
>>> manufacturer's applied DC voltage spec.
>>>
>>> The manufacturer's tech sent me a wiring diagram that shows a +12V supply
>>> with a series resistor between 470 and 2.2K ohms to the mic. The 470 ohm
>>> resistor would apply nearly 11V to the mic, if the mic element and the
>>> series act as a pure voltage divider. The 2.2K ohm resistor would produce
>>> 8V
>>> at the mic.
>>>
>>> The KSB2 schematic shows a 2.2uF electrolytic cap between the MIC AF and
>>> the
>>> rest of the KSB2, so I wouldn't think there's any risk of a short.
>>>
>>> Help from those in the know, please?
>>>
>>>   
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Re: [Elecraft] cqww 160m contest

[Brendan Minish]

I plan on being on with my K3, Please don't forget to listen towards EI,
here on the west of Ireland our Greyline is an hour later than most of
the rest of europe but BA is tough for us as we have to work you
'though' the EU wall  
-- 
73
Brendan EI6IZ 

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Re: [Elecraft] K2: connecting a condenser mic

[Jim Brown]

On Fri, 29 Jan 2010 08:49:43 -0500, Brian Machesney wrote:

>I have a condenser mic 

If it's like most 2-wire mics, you want a series resistor between V+ 
and the "hot" terminal of the mic. It serves as the load resistor 
for the output stage of the mic, and also limits current to that 
output stage to a safe value. If I knew nothing about the mic, a 
value on the order of 4.7K - 5.6K would be a good starting point. 
The mfr is giving you lower values. If you use NO resistor, the V+ 
shorts out the audio. 

73,

Jim K9YC



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Re: [Elecraft] Yaesu Mics on a K3?

[W4CCS]

I use a MD-100 with my K3 with excellant results. I purchased a NCS 
Mulit-Switcher to do the task. I use the same mike on the K3, a Kenwood 
2000 and my Yeasu FT-950. This switch works great on all.

Link:  http://www.ncsradio.com/m_switch.html

No, I don't know these guys..

de W4CCS


On 1/29/2010 10:34 AM, Don Wilhelm wrote:
> Dean,
>
> The K3 is permanently wired for the Elecraft mic configuration, so you
> must either create an adapter or rewire your microphones for the
> Elecraft pinout.  If you choose to rewire the microphones, you will have
> to change your K2 as well if you wish to use the same mic on both.
>
> After answering many questions about how to set the K2 microphone
> configuration header for a wide variety of mics, I for one am glad that
> the K3 does not have a configurable mic pinout.
>
> The K3 microphone jack pinout is in the K3 manual.
>
> 73,
> Don W3FPR
>
> Dean wrote:
>
>> All of my mics are set up for standard Yaesu hf rigs including an MD-100 and 
>> an MH-31. My K2 was set up for this configuration too.
>>
>> Is it feasible to configure the K3 to use these mics? Or do I need to change 
>> all of the mic configurations?
>>
>> Thanks!
>>
>> Dean
>>
>>
>>  
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Re: [Elecraft] cqww 160m contest

[Jan Erik Holm]

chen dave wrote:
> Hello all,
>Anyone will take part in the cqww 160m contest?
>   Waiting for K3 to K3 qso on top bands.
> 
> 73 de ba4rf,David
 >
Yes I will use a K3, will be on for a few hours now
and then, look for me I will look for you.

73 good luck / Jim SM2EKM

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[Elecraft] K3 and Centurion

[k6rb]

What's the best way to interface a K3 with a Centurion QSK amplifier? I
can run the keying through the Centurion back to the K3 (as Ten Tec
suggests), or key the K3 directly and let the TX DLY remain 008 to delay
the time RF appears relative to asserting the KEY OUT line.

I'm going to try the K3 out on 160 this weekend (during CQWW160) and will
most likely be using the Centurion amp.

Rob K6RB

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Re: [Elecraft] cqww 160m contest

[Andrew Faber]

David,
  I'll be on with my K3, #076.  Hope to work you at about 1400Z or so??
73, andy, ae6y
- Original Message - 
From: "chen dave" 
To: 
Sent: Friday, January 29, 2010 5:20 AM
Subject: [Elecraft] cqww 160m contest


> Hello all,
>   Anyone will take part in the cqww 160m contest?
>  Waiting for K3 to K3 qso on top bands.
> 
> 73 de ba4rf,David
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[Elecraft] Email addresses

[Mike]

Does anyone know if i...@elecraft.com and/or sa...@elecraft.com are working?

73, Mike NF4L

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Re: [Elecraft] K3 and Centurion

[Steve Ellington]

My K3 keys my Centurion directly via the key out jack of the K3 and key-in 
jack on the Centurion. No additional delay seems necessary and QSK is very 
smooth.

Steve
N4LQ
- Original Message - 
From: 
To: 
Sent: Friday, January 29, 2010 1:08 PM
Subject: [Elecraft] K3 and Centurion


> What's the best way to interface a K3 with a Centurion QSK amplifier? I
> can run the keying through the Centurion back to the K3 (as Ten Tec
> suggests), or key the K3 directly and let the TX DLY remain 008 to delay
> the time RF appears relative to asserting the KEY OUT line.
>
> I'm going to try the K3 out on 160 this weekend (during CQWW160) and will
> most likely be using the Centurion amp.
>
> Rob K6RB
>
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[Elecraft] [K3]K3 switched off after power failure

[Dr. Werner Furlan]

When my K3 looses power, it will not switch on itself after power is back. 

Is there a way to achieve this? 
The question is because I am thinking of an unattended use with an 
unreliable power source. 

73! de Werner OE9FWV

-- 
"Sometimes, a cigar is just a cigar."-- often attributed to Freud


Email powered by Pegasus Mail free at 
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Re: [Elecraft] Inrad 1500Hz filter for the K3

[Guy Olinger K2AV]

You don't have to buy one to try it out. You can adjust the
SHIFT/WIDTH controls to see what it sounds like.  Having a narrow
roofing filter pays off in a contest or other heavy operating
conditions to keep something loud in the space between the roofing
bandwidth and DSP bandwidth from pumping the hardware AGC.

73, Guy.

On Thu, Jan 28, 2010 at 11:56 PM,   wrote:
>
> It is narrow but you slew the passband shift over so the max
> intelligibility matches up with the center of the audio (not necessarily with 
>  the center
> of the filter) and you can copy SSB with a 1.1 khz filter.   Play with it
> you will be amazed.  The intelligible portion of audio is  really quite
> narrow.
>
> Buck
> k4ia
> k3# 101
>
>
>
> In a message dated 1/28/2010 9:33:44 P.M. Eastern Standard Time,
> b...@gotoloveland.com writes:
>
> Well  they are out of stock, so the filter must be pretty good, or at
> least  popular.
>
> I have read nothing but good about this filter, though it  seems to be a
> bit narrow for SSB, or that is what history tells  me.
>
> Any bad on this filter?
>
> I would actually like to put one in  the K3 and also the Mark-V, as they
> share a common IF frequency ( 8125 kHz  ).
>
> Not looking for Hi-FI, just the best blocking that will still give  an
> intelligible SSB  signal.
>
>
>
>
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Re: [Elecraft] [K3]K3 switched off after power failure

[Don Wilhelm]

Werner,

The K3 has a Remote Power ON input on the ACC connector.  See the manual 
page 44 for how it is to be used.
You might want to add a battery at the output of the power supply 
because of the unreliable power source which will allow an orderly 
shutdown of the K3 when the mains power is interrupted.

73,
Don W3FPR

Dr. Werner Furlan wrote:
> When my K3 looses power, it will not switch on itself after power is back. 
>
> Is there a way to achieve this? 
> The question is because I am thinking of an unattended use with an 
> unreliable power source. 
>
> 73! de Werner OE9FWV
>   
>
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Re: [Elecraft] cqww 160m contest

[Hector Padron]

I don't have antenna space for that band but look for my very good friend Julio 
AD4Z from Miami/FL, a professional contester who never miss that one and he 
always does it with his K3 barefoot and a Battlecreek vertical antenna
.Good luck to all who will do it.
 
AD4C

"For a refined ham it is compulsory to own a k3"

--- On Fri, 1/29/10, chen dave  wrote:


From: chen dave 
Subject: [Elecraft] cqww 160m contest
To: elecraft@mailman.qth.net
Date: Friday, January 29, 2010, 1:20 PM


Hello all,
       Anyone will take part in the cqww 160m contest?
      Waiting for K3 to K3 qso on top bands.

73 de ba4rf,David
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Re: [Elecraft] cqww 160m contest

[Julius Fazekas n2wn]

And EU can be strong even after your SR in the US.

Best of luck to all in the contest. Hope we don't lose power due to the
ice/snow storm moving into the area.

73,
Julius


-
Julius Fazekas
N2WN

Tennessee Contest Group
http://www.k4ro.net/tcg/index.html

Tennessee QSO Party
http://www.tnqp.org/

Elecraft K2/100 #4455
Elecraft K3/100 #366
Elecraft K3#1875
-- 
View this message in context: 
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Re: [Elecraft] [K3]K3 switched off after power failure

[Ed Muns]

Has the 12v Sense Mod been done?

Ed - W0YK

--Original Message--
From: Don Wilhelm
Sender: elecraft-boun...@mailman.qth.net
To: fur...@gmx.net
Cc: elecraft@mailman.qth.net
ReplyTo: d...@w3fpr.com
Subject: Re: [Elecraft] [K3]K3 switched off after power failure
Sent: Jan 29, 2010 12:04

Werner,

The K3 has a Remote Power ON input on the ACC connector.  See the manual 
page 44 for how it is to be used.
You might want to add a battery at the output of the power supply 
because of the unreliable power source which will allow an orderly 
shutdown of the K3 when the mains power is interrupted.

73,
Don W3FPR

Dr. Werner Furlan wrote:
> When my K3 looses power, it will not switch on itself after power is back. 
>
> Is there a way to achieve this? 
> The question is because I am thinking of an unattended use with an 
> unreliable power source. 
>
> 73! de Werner OE9FWV
>   
>
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Sent from my BlackBerry
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[Elecraft] K3 F Gain mod

[Brian Alsop]

The instructions have you clipping one SMT resistor and then removing 
the pieces.

I've did a trial of this method on a junk PCB here.

At least on the board I used, there apparently is some kind of adhesive 
under under the chip.  The clipping process seems to remove the solder 
resist and perhaps any PCB traces under the chip.

Is there anything under R8 that can be damaged?

(Guess not, since nobody complaining.  A blow up of the pix doesn't seem 
to show anything either)

73 de Brian/K3KO
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Re: [Elecraft] cqww 160m contest

[Arie Kleingeld PA3A]

Yes,

My K3 will do the work at PI4D, nice vertical for TX/RX and EW-beverage for
the sub rx.  Diversity of course.

73
Arie PA3A

-Oorspronkelijk bericht-
Van: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] Namens chen dave
Verzonden: vrijdag 29 januari 2010 14:20
Aan: elecraft@mailman.qth.net
Onderwerp: [Elecraft] cqww 160m contest

Hello all,
   Anyone will take part in the cqww 160m contest?
  Waiting for K3 to K3 qso on top bands.

73 de ba4rf,David
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Re: [Elecraft] K3 and Centurion

[Jim Brown]

On Fri, 29 Jan 2010 10:08:57 -0800 (PST), k...@baymoon.com wrote:

>I'm going to try the K3 out on 160 this weekend (during CQWW160) and will
>most likely be using the Centurion amp.

Rob,

Like the FT1000MP, the K3 includes circuitry so that the DC signal "keys the 
amp" occurs about 8 msec before RF output. The 8 msec is adjustable by a 
menu setting. The 8 msec default works fine with my Ten Tec Titan 425 amps 
in both QSK and semi-QSK mode. 

73,

Jim K9YC


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Re: [Elecraft] Email addresses

[Eric Swartz - WA6HHQ, Elecraft]

Yes - both addresses make it to our sales group. Lisa sees all of these.

Note that you may not always get a response the same day due to high 
levels of incoming emails. Especially on Mondays, when we have to catch 
up on all the weekend emails. :-)

73, Eric   WA6HHQ



Mike wrote:
> Does anyone know if i...@elecraft.com and/or sa...@elecraft.com are working?
>
> 73, Mike NF4L
>   
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Re: [Elecraft] [K3]K3 switched off after power failure

[oe9fwv]

hi Don, 

thank you for the hint to the ACC connector. Well, that's easy. I only have
to ground the "power on pin". 

And @ Ed: yes the 12V sense mod is installed. (it is not a 12V sense
problem, but a real power shutoff)


73! de Werner OE9FWV

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Re: [Elecraft] K3 F Gain mod

[Matt Zilmer]

The K3 electronics seems to be assembled with a "clean" SMT process,
which means that only solder paste is used to hold the components on
the board during reflow.  The boards are designed for rework.

You should not experience the same problem with K3 PCBA's.  I've done
most of the approved rework to the K3 and had no trouble like this.

73,
matt W6NIA
K3 #24

On Fri, 29 Jan 2010 21:40:33 +, you wrote:

>The instructions have you clipping one SMT resistor and then removing 
>the pieces.
>
>I've did a trial of this method on a junk PCB here.
>
>At least on the board I used, there apparently is some kind of adhesive 
>under under the chip.  The clipping process seems to remove the solder 
>resist and perhaps any PCB traces under the chip.
>
>Is there anything under R8 that can be damaged?
>
>(Guess not, since nobody complaining.  A blow up of the pix doesn't seem 
>to show anything either)
>
>73 de Brian/K3KO
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[Elecraft] Yaesu Mic to K3

[J.A. Wolf, MD, K6JW]

   Another solution to the mic interface problem is the MFJ 1251 Universal 
Microphone Adapter. You configure internal jumpers for the specific mic and 
radio you're using. You'll have to reconfigure the device for each different 
type or style of mic (Yaesu 8 pin round or modular, ICOM 8 pin round or 
modular, etc.), but 
it will solve the problem. The K3 mic connector is configured in the Kenwood 
mode, so you'd follow the directions for Yaesu mic to Kenwood radio. It should 
work well. The cost of the device is about $35.
   I originally bought one of these things because I wanted to use it to plug 
two mics into a Yaesu FT-857D that I use as a backup HF and VHF/UHF radio in 
the shack. I quickly found that I really couldn't run the two mics 
simultaneously with it, but by combining a couple of Heil adapters with the 
unit, I can now run both the modular hand mic and a Heil dual element desk mic 
with footswitch through it, one at a time. This is better on the 857D than 
reconnecting each time at the radio's connector, since that requires removal of 
the control head -- a stupid design decision by Yaesu. Anyway, if you're just 
trying to adapt Yaesu mics to the K3, you might consider the MFJ adapter. It 
should work just fine.
73,
Jeff, K6JW 
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Re: [Elecraft] K3 F Gain mod

[Dave - AB7E]

There are different methods used to solder SMT components to PC boards.  The 
use of adhesive under the body of the component is an older process typically 
used for wave soldering.  Reflow soldering is more common now (especially for 
single sided boards), where the solder paste is screened onto the board first 
and then the component leads are placed into the paste.  The sticky paste holds 
the component in place until the solder melts, at which point the surface 
tension of the solder takes over.

I'm pretty sure the K3 uses the latter technique and wouldn't have any epoxy 
holding the resistor to the board.

73,
Dave   AB7E



--Original Mail--
From: "Brian Alsop" 
To: 
Sent: Fri, 29 Jan 2010 21:40:33 +
Subject: [Elecraft] K3 F Gain mod

The instructions have you clipping one SMT resistor and then removing 
the pieces.

I've did a trial of this method on a junk PCB here.

At least on the board I used, there apparently is some kind of adhesive 
under under the chip.  The clipping process seems to remove the solder 
resist and perhaps any PCB traces under the chip.

Is there anything under R8 that can be damaged?

(Guess not, since nobody complaining.  A blow up of the pix doesn't seem 
to show anything either)

73 de Brian/K3KO
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Re: [Elecraft] Email addresses

[Mike]

Thanks Eric.

I had sent one to info on the 21st and a followup to sales on the 27th. 
Must still be in the ketchup ;-)
I'll try again.

73, Mike NF4L

Eric Swartz - WA6HHQ, Elecraft wrote:
> Yes - both addresses make it to our sales group. Lisa sees all of these.
>
> Note that you may not always get a response the same day due to high 
> levels of incoming emails. Especially on Mondays, when we have to 
> catch up on all the weekend emails. :-)
>
> 73, Eric   WA6HHQ
> 
>
>
> Mike wrote:
>> Does anyone know if i...@elecraft.com and/or sa...@elecraft.com are 
>> working?
>>
>> 73, Mike NF4L
>>   
>


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[Elecraft] FS Loaded K3

[Bob]

Hi,

Like new 100% awesome and mint K3, loaded. If you are in the Detroit area,
you are welcome to come and use it and see it in action. For all inquiries
or for further details, please contact me off of  list.

If you prefer, you can email me your phone number and I will call you.

Thanks
Bob
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Re: [Elecraft] Arctic Silver - anyone using it instead of thermal-pads?

[Leigh L. Klotz, Jr WA5ZNU]

You probably already know this, but for the archives, there is one 
reason: if the active component must be insulated from ground, Bergquist 
and other thermal pads will do that, but Arctic Silver, white Silicone, 
and Diamond Powder won't do that.

Leigh/WA5ZNU

On 01/29/2010 07:01 AM, K2QI wrote:
> Slightly OT, but when it comes to processors, there's no way I'd use a
> thermal pad.
>
> A thin layer of Arctic Silver is a far better heat conductor than any
> thermal pad available.
>
> I see no downside to using AS on any FET apart from the potential mess, but
> the trick is to use a small amount.  A little goes a long way with that
> stuff.
>
> James K2QI
>
> On Fri, Jan 29, 2010 at 9:25 AM, Don Wilhelm  wrote:
>
>
>> Duane,
>>
>> I really don't understand why anyone would want to use that white gooey
>> messy stuff that sticks to everything and jumps off where it was placed
>> to get all over one's clothing and skin!
>> The supplied thermal pads are supposed to provide better heat
>> conductivity than all the thermal grease in the world!
>> 'Nuff said.
>>
>> Don W3FPR
>>
>>
>>
>>  
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[Elecraft] FS: Elecraft W1 computing wattmeter and SWR bridge

[Johnny Siu]

Hello Group,

I have already had the LP100A and W2.  This W1 is surplus to my requirement. It 
comes with the PC interface cable.  Original price from Elecraft was $104.9 + 
shipping.

I would like to sell it at $55 plus $10 for shipping by registered airmail.  
The W1 was well built and 100% functional.  I accept payment by paypal.

If interested,  please email me off the list.

73

Johnny Siu VR2XMC


  Yahoo!香港提供網上安全攻略，教你如何防範黑客! 請前往 http://hk.promo.yahoo.com/security/ 了解更多!

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[Elecraft] Hexkey OT

[rfenabled]

Hi,

Does anyone have one of the Elecraft paddles?

Would you be able to email me with your thoughts on these.

I am getting back into CW and the selection available is a little daunting to 
the uninitiated.

Please reply direct to reduce the bandwidth on the reflector as I don't wish to 
cause unnecessary clutter..(:-))

73's
Gary
VK4FD
Sent via BlackBerry® from Telstra
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