Re: [Elecraft] Xenia/Dayton

[Howard Hoyt]

Thanks to a sharp eyed partner, I have to modify a previous statement 
regarding free shipping, here is the revised statement


1) We will be offering free shipping from May 15th until May 31 for all 
USA orders over $20 except ferrite-only orders.  It's not as exciting as 
picking your stuff up at the Hamvention, and meeting Wayne, Eric and the 
Elecraft crew as well as me and my daughter Sarah KM4WHL, but its the 
next best thing!  Due to inflexible PayPal shipping procedures, we will 
omit any shipping charges on the initial order, and then for the 
ferrite-only orders separately invoice for shipping cost before 
shipping.  In most cases ferrite shipping will be $7.00 or for the 
larger items $14.00.


We apologize for any problems this may cause, but I think you will agree 
it is not a good idea to spend $3.00 to ship an item we only make $2.00 
on (unless you make up for it in volume ;-))...and ferrites are so dang 
heavy and brittle you just can't ship them cheaply!  Sorry to take up 
more bandwidth due to my oversight...


Cheers & 73,
Howie - WA4PSC


On 5/14/2017 2:58 PM, Howard Hoyt wrote:
*For those of you who cannot attend the Dayton/Xenia Hamvention we 
have a few announcements:


1)  We will be offering free shipping from May 15th until May 31 for 
all USA orders except ferrite-only orders.  It's not as exciting as 
picking your stuff up at the Hamvention and meeting the dynamic Wayne, 
Eric and the rest of the Elecraft crew as well as me and my daughter 
Sarah KM4WHL, but its the next best thing!


2)  We are showing 2 new products and taking pre-orders (no payment): 
the Kx32fan accessory and Kx21 3-cell DC Charger.  If you cannot make 
the show, please send an email to: i...@proaudioeng.com and let us 
know you want to be on the list, and we'll save your place in the 
initial orders.  Those of you who have already emailed us about these 
products are already in the queue.


To those who will be at Xenia, travel safely, and we are looking 
forward to meeting you!


Cheers & 73,

Howie - WA4PSC
www.proaudioeng.com*


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[Elecraft] [KX2] Using the new 4 PF keys

[Rick Tavan]

The KX2 is a superb example of user interface compression, providing much
of the functionality of KX3 (and even K3) in a tiny box. But there are a
few things relegated to menus that I tend to do often. The KX2 firmware
upgrade to allow four PF keys instead of just one came a few days before my
KX2 and I am very grateful for it. So far I've just been testing my KX2 in
the home shack, so what I do with the keys may change when I get out in the
field. Here is how I'm allocating the four keys so far:

1 - ATU ON/OFF
2 - VOX ON/OFF (= TEST function of K3)
3 - DUAL RX ("SUB") ON/OFF
4 - RF GAIN ADJ (probably unnecessary in the field with lousy antennas)
  In the field I would probably change PF4 to BKLIGHT ON/OFF.

Any better ideas?

73,

/Rick N6XI

-- 

Rick Tavan
Truckee, CA
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[Elecraft] KX2 Heatsink

[Johnny Siu via Elecraft]

The original request for aftermarket heat link was from earlier production of 
KX3.  My KX3 was an early production.  I plainly put up heat sink issue in this 
mailing list that the early KX3 only has thin piece of metal as heat sink which 
simply did not meet the specifications published by Elecraft.
Eventually, Elecraft did respond and now newer production comes with KX3HSMDKT

I believe Elecraft learnt this lesson and the heat sink in KX2 will meet the 
published operating specifications.  For pro-long full duty cycle digital 
operation at 10W, KX2 is simply not designed for that usage hence the stock 
heat sink.
Heat sink problem also exists in the Elecraft transverters, while the max 
output is 20W, it cannot sustain 10W FM causal operation (i.e. too hot)
73
Johnny VR2XMC  寄件人︰ Howard Hoyt 
 收件人︰ elecraft@mailman.qth.net; elecraft-requ...@mailman.qth.net 
 傳送日期︰ 2017年05月15日 (週一) 5:19 AM
 主題︰ [Elecraft] KX2 Heatsink
   
Hi Kev,

The issue is related to the fact that Elecraft, as do virtually all 
amateur radio manufacturers rate power output with 50% duty cycle SSB/CW 
modes only.  As is stated in the KX3 specifications and here copied from 
the KX2 manual:

/"80-17 meters, 10 W PEP max (+/- 1 dB); 12 and 10 meters, 8 W PEP max 
(+/- 1 dB).//
//Recommended transmit duty cycle: 50%, all modes. (If power amplifier 
temperature or//
//current drain is too high, power will automatically be reduced.)//
//NOTE: When using over 5 W in SSB, DATA-A and AFSK-A modes, the//
//recommended supply voltage is 12 V or higher to minimize transmit 
intermodulation//
//products. Higher power with lower voltages should be used only when 
necessary."/

I believe many or most of the requests we have had to make an 
aftermarket heatsink have come from hams using these rigs in digital 
modes such as JT and desire full-power operation, which Elecraft does 
not explicitly endorse, but which is possible with additional cooling.  
Elecraft designs and specifies operation of their rigs very 
conservatively compared to many other manufacturers, and the KX2 and KX3 
specifications are spot on.
Also as is stated in the specification, the KX2 internal battery, at 
10-11V depending on state of charge is considered adequate for 5W or 
less, and we have supplied many Kx33 14V supplies to KX2 owners who want 
to use the rig at 10W power when AC power is available.

I conclude many of these KX2 rigs are being used in digital modes from 
fixed location AC power, not from batteries.  I can't blame the hams who 
do this, the KX2 is a fantastically full-featured rig for fixed 
operation, I have used it at home to check into local 10M SSB nets 
driving a KPA500 and no one was the wiser compared to my K3.

Cheers,
Howie - WA4PSC


On 5/14/2017 4:01 PM, elecraft-requ...@mailman.qth.net wrote:

>>It seems odd to me that an issue like this would go unmentioned
>> and unaddressed by Elecraft.
>>
>>73,
>>Kev K4VD

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Re: [Elecraft] Ideal input voltage for TX on KXPA100?

[Don Wilhelm]

David,

There is no specific voltage, except that "higher is better".

A fused distribution block will add 6 connector junctions and you can 
expect .001 ohms from each one.

At 15 amps draw, that alone contributes about 0.1 volt drop.

73,
Don W3FPR

On 5/14/2017 6:42 PM, David Orman wrote:

Hi Don,

I'm making sure not to exceed idle voltages like this. If I set the 
power supply to 14.2V no load, it's 13.8V under load (100W out tune on 
80M). I use 10 gauge cable, so I have relatively small voltage drop 
even with the distribution block and fuses involved. I'm just trying 
to find out what the optimal voltage under load is for TX cleanliness. 
Is that 13.8V? Is higher voltage than this better? I appreciate the 
input; I'm truly just trying to find out what 'ideal' looks like under 
load.




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Re: [Elecraft] Ideal input voltage for TX on KXPA100?

[David Orman]

Hi Don,

I'm making sure not to exceed idle voltages like this. If I set the power
supply to 14.2V no load, it's 13.8V under load (100W out tune on 80M). I
use 10 gauge cable, so I have relatively small voltage drop even with the
distribution block and fuses involved. I'm just trying to find out what the
optimal voltage under load is for TX cleanliness. Is that 13.8V? Is higher
voltage than this better? I appreciate the input; I'm truly just trying to
find out what 'ideal' looks like under load.

David

On Sun, May 14, 2017 at 3:50 PM, Don Wilhelm  wrote:

> David,
>
> Be careful about checking for 13.8 under load because you don't yet know
> how much voltage drop you have in the power cable.
> Check the difference between load and idle at whatever voltage you have
> right now.
> You MUST keep the maximum supply voltage to less than 15 volts.
>
> What I am saying is that if you have significant voltage drop in the power
> cable, then setting the voltage under load to 13.8 *may* result in greater
> than 15 volts no load.
>
> If you have significant voltage drop in the power supply to KXPA100 power
> routing, fix that first.
>
> 73,
> Don W3FPR
>
>
> On 5/14/2017 3:42 PM, David Orman wrote:
>
>>
>> Hi Don,
>>
>> Thank you for the reply. Is there an ideal voltage under TX/ load? 13.8V
>> under load is easy, so is 14.5+. If there's advantage to running higher
>> voltages, I can, but if there is no advantage I'll just target 13.8 under
>> load and call it a day and not worry about dropping voltage for other
>> components.
>>
>>
>>
>
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Re: [Elecraft] KX2 Heatsink

[Josh Fiden]

Sorry if this is argumentative, but your post seems to be in conflict 
with Wayne's post earlier today.


Wayne: "...heat sinking that is entirely adequate  in all modes at full 
power, even from a 14 volt external supply."


The manual also says "all modes" which I don't see why that would 
exclude JT65. JT65 is *not* 100% duty cycle. It transmits about 50 
seconds out of the 1 minute interval, then receives for 1 minute. Sounds 
to me like slightly less than 50%.


Wayne's results were 7 mins key down until reduced power at 25c ambient. 
Running JT conditions of 1 min xmit and 1 min receive, how long does it 
take to reduce power, if ever? How much is this performance reduced at 
30 or 35c? Without this data I don't see how we evaluate whether an 
additional heat sink is required.


Thanks & 73,
Josh W6XU

On 5/14/2017 2:18 PM, Howard Hoyt wrote:

Hi Kev,

The issue is related to the fact that Elecraft, as do virtually all 
amateur radio manufacturers rate power output with 50% duty cycle 
SSB/CW modes only.  As is stated in the KX3 specifications and here 
copied from the KX2 manual:


/"80-17 meters, 10 W PEP max (+/- 1 dB); 12 and 10 meters, 8 W PEP max 
(+/- 1 dB).//
//Recommended transmit duty cycle: 50%, all modes. (If power amplifier 
temperature or//

//current drain is too high, power will automatically be reduced.)//
//NOTE: When using over 5 W in SSB, DATA-A and AFSK-A modes, the//
//recommended supply voltage is 12 V or higher to minimize transmit 
intermodulation//
//products. Higher power with lower voltages should be used only when 
necessary."/


I believe many or most of the requests we have had to make an 
aftermarket heatsink have come from hams using these rigs in digital 
modes such as JT and desire full-power operation, which Elecraft does 
not explicitly endorse, but which is possible with additional 
cooling.  Elecraft designs and specifies operation of their rigs very 
conservatively compared to many other manufacturers, and the KX2 and 
KX3 specifications are spot on.
Also as is stated in the specification, the KX2 internal battery, at 
10-11V depending on state of charge is considered adequate for 5W or 
less, and we have supplied many Kx33 14V supplies to KX2 owners who 
want to use the rig at 10W power when AC power is available.


I conclude many of these KX2 rigs are being used in digital modes from 
fixed location AC power, not from batteries.  I can't blame the hams 
who do this, the KX2 is a fantastically full-featured rig for fixed 
operation, I have used it at home to check into local 10M SSB nets 
driving a KPA500 and no one was the wiser compared to my K3.


Cheers,
Howie - WA4PSC


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[Elecraft] KX2 Heatsink

[Howard Hoyt]

Hi Kev,

The issue is related to the fact that Elecraft, as do virtually all 
amateur radio manufacturers rate power output with 50% duty cycle SSB/CW 
modes only.  As is stated in the KX3 specifications and here copied from 
the KX2 manual:


/"80-17 meters, 10 W PEP max (+/- 1 dB); 12 and 10 meters, 8 W PEP max 
(+/- 1 dB).//
//Recommended transmit duty cycle: 50%, all modes. (If power amplifier 
temperature or//

//current drain is too high, power will automatically be reduced.)//
//NOTE: When using over 5 W in SSB, DATA-A and AFSK-A modes, the//
//recommended supply voltage is 12 V or higher to minimize transmit 
intermodulation//
//products. Higher power with lower voltages should be used only when 
necessary."/


I believe many or most of the requests we have had to make an 
aftermarket heatsink have come from hams using these rigs in digital 
modes such as JT and desire full-power operation, which Elecraft does 
not explicitly endorse, but which is possible with additional cooling.  
Elecraft designs and specifies operation of their rigs very 
conservatively compared to many other manufacturers, and the KX2 and KX3 
specifications are spot on.
Also as is stated in the specification, the KX2 internal battery, at 
10-11V depending on state of charge is considered adequate for 5W or 
less, and we have supplied many Kx33 14V supplies to KX2 owners who want 
to use the rig at 10W power when AC power is available.


I conclude many of these KX2 rigs are being used in digital modes from 
fixed location AC power, not from batteries.  I can't blame the hams who 
do this, the KX2 is a fantastically full-featured rig for fixed 
operation, I have used it at home to check into local 10M SSB nets 
driving a KPA500 and no one was the wiser compared to my K3.


Cheers,
Howie - WA4PSC


On 5/14/2017 4:01 PM, elecraft-requ...@mailman.qth.net wrote:


It seems odd to me that an issue like this would go unmentioned
and unaddressed by Elecraft.

73,
Kev K4VD


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Re: [Elecraft] Fixed bug in K3 macro handling; also fixes "lost K-Pod switch event" syndrome

[Doug Turnbull]

There are many reasons I like Elecraft and this is one of the major ones.
Thank you.   I am still amazed to have a K-Pod at all.

Tonight though I am on the KX2 with 5W into 4 el SteppIR at 24M - sort of
cheating at QRP but I want to exercise the Elecraft CW paddle.

Elecraft is a class operation.

 73 Doug EI2CN

-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Wayne
Burdick
Sent: 14 May 2017 19:53
To: Elecraft Reflector
Subject: [Elecraft] Fixed bug in K3 macro handling; also fixes "lost K-Pod
switch event" syndrome

Hi all,

If you use a K-Pod, or K3 macros in general, you may have occasionally
noticed that a macro's name was flashed on VFO B but the macro itself didn't
get executed. This would only happen if you also had an external application
such as LP-Bridge or HRD polling the radio continuously. 

The K-Pod is affected because it uses K3 macros to define its switch
tap/hold behavior.

I found the source of the problem and will have a new field-test firmware
release by tomorrow. If you have time to test it, please email me directly.

73,
Wayne
N6KR


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Re: [Elecraft] Fixed bug in K3 macro handling; also fixes "lost K-Pod switch event" syndrome

[Wayne Burdick]

This also applies to the K3S.

Wayne


> On May 14, 2017, at 12:53 PM, Wayne Burdick  wrote:
> 
> Hi all,
> 
> If you use a K-Pod, or K3 macros in general, you may have occasionally 
> noticed that a macro’s name was flashed on VFO B but the macro itself didn’t 
> get executed. This would only happen if you also had an external application 
> such as LP-Bridge or HRD polling the radio continuously. 
> 
> The K-Pod is affected because it uses K3 macros to define its switch tap/hold 
> behavior.
> 
> I found the source of the problem and will have a new field-test firmware 
> release by tomorrow. If you have time to test it, please email me directly.
> 
> 73,
> Wayne
> N6KR
> 
> 

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Re: [Elecraft] Ideal input voltage for TX on KXPA100?

[Don Wilhelm]

David,

Be careful about checking for 13.8 under load because you don't yet know 
how much voltage drop you have in the power cable.
Check the difference between load and idle at whatever voltage you have 
right now.

You MUST keep the maximum supply voltage to less than 15 volts.

What I am saying is that if you have significant voltage drop in the 
power cable, then setting the voltage under load to 13.8 *may* result in 
greater than 15 volts no load.


If you have significant voltage drop in the power supply to KXPA100 
power routing, fix that first.


73,
Don W3FPR

On 5/14/2017 3:42 PM, David Orman wrote:


Hi Don,

Thank you for the reply. Is there an ideal voltage under TX/ load? 
13.8V under load is easy, so is 14.5+. If there's advantage to running 
higher voltages, I can, but if there is no advantage I'll just target 
13.8 under load and call it a day and not worry about dropping voltage 
for other components.





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Re: [Elecraft] KX2 Heatsink [which is entirely sufficient for typical operation]

[kevino z]

I like the way the way the VE7FMN heat sink I bought for my KX3 looks. Now that 
the PAs are on the side of the KX2, I just don't feel the same about the 
appearance of the heat sinks I've seen for it. Kind of look lopsided.

-Kevin (KK4YEL)

-
The problem with the world is that the intelligent people are full of doubts, 
while the stupid ones are full of confidence.

On May 14, 2017, at 16:02, Kevin - K4VD > 
wrote:

Thanks Wayne. I bought the heat sink for the KX3 and found it wasn't needed
for the way I operate. Seems the same for the KX2. Normal conditions don't
require additional heatsinking. Extreme conditions might.

73,
Kev K4VD

On Sun, May 14, 2017 at 12:55 PM, Wayne Burdick 
> wrote:

Hi Kevin,

We have shipped many thousands of KX2s, and in all that time I have seen
only a few comments asking about additional heat sinking.

The KX2’s thick right side panel is thermally integrated with both the top
and bottom cover. This results in heat sinking that is entirely adequate
in all modes at full power, even from a 14 volt external supply. When
running from internal battery (11 V), heat dissipation is further reduced
for a given power level.

To put a rough number on this: I just ran my KX2 at 10 watts key-down in
CW mode, into a dummy load, while watching the PA temperature (using the
DISP switch function). It took well over 7 minutes for the temperature to
reach the limit (63 C), at which point power was reduced automatically to 5
watts. If you persisted in operating key-down, the radio would eventually
exit transmit mode. Starting temperature was 25 C (shack ambient).

Additional heat sinking might be desirable if you’re going well beyond
“typical” operation: e.g., trying to run full power key-down for many
minutes at a time, repeatedly, in a hot car or in direct sunlight. In that
case, you have other options besides using supplemental heat sinking:
reduce power, run from a lower supply voltage (like the internal battery),
move into the shade, roll down the car windows, etc.

But for the overwhelming majority of our customers, the KX2’s thermal
design is completely up to the task. Note that the heat sinking is
intentionally designed to heat up the right end of the enclosure, so that
when using the rig like an HT (holding the non-antenna end), you’ll barely
feel any increase in warmth.

73,
Wayne
N6KR



Kevin - K4VD wrote:

From a recent post:

"We have been told by people running the rig in digital modes at 10W the
unit will thermal down after a few transmit cycles"

I understand the KX3 also had an early issue with heatsinks that was
corrected in time by the company making the aftermarket heatsink
unnecessary I think? I wonder if Elecraft has acknowledged the issue and
is
correcting it for the KX2 also?






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Re: [Elecraft] KX2 Heatsink [which is entirely sufficient for typical operation]

[Kevin - K4VD]

Thanks Wayne. I bought the heat sink for the KX3 and found it wasn't needed
for the way I operate. Seems the same for the KX2. Normal conditions don't
require additional heatsinking. Extreme conditions might.

73,
Kev K4VD

On Sun, May 14, 2017 at 12:55 PM, Wayne Burdick  wrote:

> Hi Kevin,
>
> We have shipped many thousands of KX2s, and in all that time I have seen
> only a few comments asking about additional heat sinking.
>
> The KX2’s thick right side panel is thermally integrated with both the top
> and bottom cover. This results in heat sinking that is entirely adequate
> in all modes at full power, even from a 14 volt external supply. When
> running from internal battery (11 V), heat dissipation is further reduced
> for a given power level.
>
> To put a rough number on this: I just ran my KX2 at 10 watts key-down in
> CW mode, into a dummy load, while watching the PA temperature (using the
> DISP switch function). It took well over 7 minutes for the temperature to
> reach the limit (63 C), at which point power was reduced automatically to 5
> watts. If you persisted in operating key-down, the radio would eventually
> exit transmit mode. Starting temperature was 25 C (shack ambient).
>
> Additional heat sinking might be desirable if you’re going well beyond
> “typical” operation: e.g., trying to run full power key-down for many
> minutes at a time, repeatedly, in a hot car or in direct sunlight. In that
> case, you have other options besides using supplemental heat sinking:
> reduce power, run from a lower supply voltage (like the internal battery),
> move into the shade, roll down the car windows, etc.
>
> But for the overwhelming majority of our customers, the KX2’s thermal
> design is completely up to the task. Note that the heat sinking is
> intentionally designed to heat up the right end of the enclosure, so that
> when using the rig like an HT (holding the non-antenna end), you’ll barely
> feel any increase in warmth.
>
> 73,
> Wayne
> N6KR
>
>
>
> > Kevin - K4VD wrote:
> >
> > From a recent post:
> >
> > "We have been told by people running the rig in digital modes at 10W the
> > unit will thermal down after a few transmit cycles"
> >
> > I understand the KX3 also had an early issue with heatsinks that was
> > corrected in time by the company making the aftermarket heatsink
> > unnecessary I think? I wonder if Elecraft has acknowledged the issue and
> is
> > correcting it for the KX2 also?
>
>
>
>
>
>
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[Elecraft] Fixed bug in K3 macro handling; also fixes "lost K-Pod switch event" syndrome

[Wayne Burdick]

Hi all,

If you use a K-Pod, or K3 macros in general, you may have occasionally noticed 
that a macro’s name was flashed on VFO B but the macro itself didn’t get 
executed. This would only happen if you also had an external application such 
as LP-Bridge or HRD polling the radio continuously. 

The K-Pod is affected because it uses K3 macros to define its switch tap/hold 
behavior.

I found the source of the problem and will have a new field-test firmware 
release by tomorrow. If you have time to test it, please email me directly.

73,
Wayne
N6KR


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Re: [Elecraft] Ideal input voltage for TX on KXPA100?

[David Orman]

Hi Don,

Thank you for the reply. Is there an ideal voltage under TX/ load? 13.8V
under load is easy, so is 14.5+. If there's advantage to running higher
voltages, I can, but if there is no advantage I'll just target 13.8 under
load and call it a day and not worry about dropping voltage for other
components.

David

On Sun, May 14, 2017, 14:11 Don Wilhelm  wrote:

> David,
>
> Turn it up until you see at least 13.8 on the KX3 when idle, then check
> the voltage during transmit.  You really  can go up to 14.5 volts with
> no harm.  If the voltage drops by more than 1 volt, you have too much
> resistance (too many connections) in the power cord run from the power
> supply.
> Connect the power cable to the KXPA100 directly to the power supply
> terminals.  With a 15 amp draw there will be a substantial voltage drop
> across a device like a Rigrunner.
>
> 73,
> Don W3FPR
>
> On 5/14/2017 2:43 PM, David Orman wrote:
> > Hi,
> >
> > In order to maximize TX quality and cleanliness from the KXPA100, what
> > should I aim for regarding input voltage on 100W keydown as seen by the
> KX3
> > display option PS? I've got an adjustable Astron VS-70M, but would like
> to
> > power other equipment, so am trying to find to sweet spot for the radio
>
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[Elecraft] W2 Found

[nz8j]

Sent from my Verizon, Samsung Galaxy smartphone
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[Elecraft] Taking KX3 on Airlines -Any issues/hassles with TSA/etc here days -…

[Milan]

Nobody even look or ask something on JFK last two times. 
Just put everything in drawer. Antenna, except battery put in 
checking luggage with copy of licence and have original with you. 
That way I did this winter.

Milan
YU7NS

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Re: [Elecraft] Ideal input voltage for TX on KXPA100?

[Don Wilhelm]

David,

Turn it up until you see at least 13.8 on the KX3 when idle, then check 
the voltage during transmit.  You really  can go up to 14.5 volts with 
no harm.  If the voltage drops by more than 1 volt, you have too much 
resistance (too many connections) in the power cord run from the power 
supply.
Connect the power cable to the KXPA100 directly to the power supply 
terminals.  With a 15 amp draw there will be a substantial voltage drop 
across a device like a Rigrunner.


73,
Don W3FPR

On 5/14/2017 2:43 PM, David Orman wrote:

Hi,

In order to maximize TX quality and cleanliness from the KXPA100, what
should I aim for regarding input voltage on 100W keydown as seen by the KX3
display option PS? I've got an adjustable Astron VS-70M, but would like to
power other equipment, so am trying to find to sweet spot for the radio

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[Elecraft] Xenia/Dayton

[Howard Hoyt]

*For those of you who cannot attend the Dayton/Xenia Hamvention we have 
a few announcements:


1)  We will be offering free shipping from May 15th until May 31 for all 
USA orders except ferrite-only orders.  It's not as exciting as picking 
your stuff up at the Hamvention and meeting the dynamic Wayne, Eric and 
the rest of the Elecraft crew as well as me and my daughter Sarah 
KM4WHL, but its the next best thing!


2)  We are showing 2 new products and taking pre-orders (no payment): 
the Kx32fan accessory and Kx21 3-cell DC Charger.  If you cannot make 
the show, please send an email to: i...@proaudioeng.com and let us know 
you want to be on the list, and we'll save your place in the initial 
orders.  Those of you who have already emailed us about these products 
are already in the queue.


To those who will be at Xenia, travel safely, and we are looking forward 
to meeting you!


Cheers & 73,

Howie - WA4PSC
www.proaudioeng.com*
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[Elecraft] Ideal input voltage for TX on KXPA100?

[David Orman]

Hi,

In order to maximize TX quality and cleanliness from the KXPA100, what
should I aim for regarding input voltage on 100W keydown as seen by the KX3
display option PS? I've got an adjustable Astron VS-70M, but would like to
power other equipment, so am trying to find to sweet spot for the radio
before figuring out solutions for the other devices.

I do intend to eventually move to a K* device, wishful thinking/fingers
crossed we will see it at Dayton and it'll have a 200W output. ;) For now,
though, I just want to make sure I'm running my KX3/KXPA100 optimally and
being a good radio citizen on TX. Thank you in advance!

David / K5DJO
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[Elecraft] K1 w/KBT1 battery pack

[w1dwz]

I would like to  make use of this ample resource of ELECRAFT
knowledgeable  persons  available  , to clear up an issue of how to use
my K1  w/ internal battery pack properly. 

ELECRAFT urges the practice of not charging the battery pack  KBT1 
while sitting  in the K1 itself. I assume it is for thermal reasons.   I
have found  that  it is kind of a hassle to take out the 4 screws
holding the top ,  pop out the pack  , remove the 8  AA cells , 
recharge them , reinstall , etc...   What if one recharges  them
 ,  while still in the K1   ,  at reduced charge rate , like say  10 C  
or 20 C   rate  , perhaps around   100 ma  or so,   for a   typical 
1200 maH   cell  ? And monitor what that would do to the
temperature of the pack by feeling of it for a test ?   If the pack is
just mildly warm  , feed the charge line in the  12VDC Aux line ,  set
it for  a low sort of trickle rate   60-100 ma  , and do away with all
that hassle. 

All comments / suggestionsgratefully received. 

73  Dave   W1DWZ
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Re: [Elecraft] Taking KX3 on Airlines -Any issues/hassles with TSA/etc here days - with Bio-Engg 12V 7Ah Lithium Battery as Carry On Luggage

[Ken Arck]

Whatever you do, if they ask for your KX2 to give up its seat for a 
crew member, don't argue!





At 08:47 AM 5/14/2017, you wrote:
Taking KX3 on Airlines -Any issues/hassles with TSA/etc  here days - 
with Bio-Engg 12V 7Ah Lithium Battery as Carry On Luggage



USA to Hawaii


USA oversea's


Any recent traveler's experience with Airport screeners ?


etc


Mike
WB6DJi



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--
President and CTO - Arcom Communications
Makers of repeater controllers and accessories.
http://www.arcomcontrollers.com/
Authorized Dealers for Kenwood and Telewave and
we offer complete repeater packages!
AH6LE/R - IRLP Node 3000
http://www.irlp.net
"We don't just make 'em. We use 'em!"

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Re: [Elecraft] KX2 Heatsink [which is entirely sufficient for typical operation]

[Wayne Burdick]

Hi Kevin,

We have shipped many thousands of KX2s, and in all that time I have seen only a 
few comments asking about additional heat sinking.

The KX2’s thick right side panel is thermally integrated with both the top and 
bottom cover. This results in heat sinking that is entirely adequate  in all 
modes at full power, even from a 14 volt external supply. When running from 
internal battery (11 V), heat dissipation is further reduced for a given power 
level.

To put a rough number on this: I just ran my KX2 at 10 watts key-down in CW 
mode, into a dummy load, while watching the PA temperature (using the DISP 
switch function). It took well over 7 minutes for the temperature to reach the 
limit (63 C), at which point power was reduced automatically to 5 watts. If you 
persisted in operating key-down, the radio would eventually exit transmit mode. 
Starting temperature was 25 C (shack ambient).

Additional heat sinking might be desirable if you’re going well beyond 
“typical” operation: e.g., trying to run full power key-down for many minutes 
at a time, repeatedly, in a hot car or in direct sunlight. In that case, you 
have other options besides using supplemental heat sinking: reduce power, run 
from a lower supply voltage (like the internal battery), move into the shade, 
roll down the car windows, etc.

But for the overwhelming majority of our customers, the KX2’s thermal design is 
completely up to the task. Note that the heat sinking is intentionally designed 
to heat up the right end of the enclosure, so that when using the rig like an 
HT (holding the non-antenna end), you’ll barely feel any increase in warmth. 

73,
Wayne
N6KR



> Kevin - K4VD wrote:
> 
> From a recent post:
> 
> "We have been told by people running the rig in digital modes at 10W the
> unit will thermal down after a few transmit cycles"
> 
> I understand the KX3 also had an early issue with heatsinks that was
> corrected in time by the company making the aftermarket heatsink
> unnecessary I think? I wonder if Elecraft has acknowledged the issue and is
> correcting it for the KX2 also?





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Re: [Elecraft] KX2 Heatsink

[rich hurd WC3T]

I had thermal warnings on my KX3 with WSPR at 0.1 watt.  60% duty cycle,
however.

On Sun, May 14, 2017 at 12:19 PM Walter Underwood 
wrote:

> First, read the specifications. They are on page 54 of the latest KX3
> manual.
>
> " 5 W or less recommended for high-duty-cycle modes (FM, AM, DATA). Power
> will automatically be reduced if PA temperature or current limits are
> exceeded.”
>
> A larger heatsink was introduced a couple of years ago. The serial numbers
> for the new heatsink are listed on the mods page.
>
> http://www.elecraft.com/order_form_parts.htm#kx3 <
> http://www.elecraft.com/order_form_parts.htm#kx3>
>
> Description and instructions include this: "The enhanced heat sink is
> thicker than the original and wraps around the bottom of the KX3 as shown
> in Figure 1. The additional mass and area of this heat sink provides as
> much as twice the operating time at full power before the KX3’s protective
> circuitry automatically reduces the power to 5 watts."
>
>
> http://www.elecraft.com/manual/E740254%20KX3HSMDKT%20Heat%20Sink%20Installation%20rev%20A.pdf
> <
> http://www.elecraft.com/manual/E740254%20KX3HSMDKT%20Heat%20Sink%20Installation%20rev%20A.pdf
> >
>
> For digital modes that require a lot of headroom and linearity (PSK31),
> I’d probably stick with 5 W.
>
> wunder
> K6WRU
> Walter Underwood
> CM87wj
> http://observer.wunderwood.org/ (my blog)
>
> > On May 14, 2017, at 8:05 AM, Kevin - K4VD  wrote:
> >
> > From a recent post:
> >
> > "We have been told by people running the rig in digital modes at 10W the
> > unit will thermal down after a few transmit cycles"
> >
> > I understand the KX3 also had an early issue with heatsinks that was
> > corrected in time by the company making the aftermarket heatsink
> > unnecessary I think? I wonder if Elecraft has acknowledged the issue and
> is
> > correcting it for the KX2 also?
> >
> > It seems odd to me that an issue like this would go unmentioned and
> > unaddressed by Elecraft.
> >
> > 73,
> > Kev K4VD
> > __
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> > Message delivered to wun...@wunderwood.org
>
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> Message delivered to r...@wc3t.us

-- 
73 (or 72 for the QRP folks),
Rich Hurd / WC3T
Northampton County RACES
EPA-ARRL Public Information Officer for Scouting
Latitude: 40.761621 Longitude: -75.288988  Grid: *FN20is*
40°45.68' N 75°17.33' W
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Re: [Elecraft] Taking KX3 on Airlines -Any issues/hassles with TSA/etc there days - with Bio-Engg 12V 7Ah Lithium Battery as Carry On Luggage

[Craig Buck]

I took a KX3, coax and coil of wire in carryon through Reagan to JFK and to
Israel on El AL.  That is the toughest security route in the world.  No one
said a thing or asked about it.  Brought it back in checked and Xrayed
luggage.  Again not a peep.

I was prepared with a copy of an ad showing what it was but never had to
show it.

On May 14, 2017 11:57, "Michael Aust"  wrote:

> Just trying to plan the logistics for taking a KX3 with me
> on the Airlines
>
>
> Mike
> WB6DJi
>
>
>
>
> -Original Message-
> From: Michael Aust 
> To: elecraft 
> Sent: Sun, May 14, 2017 8:47 am
> Subject: Taking KX3 on Airlines -Any issues/hassles with TSA/etc there
> days - with Bio-Engg 12V 7Ah Lithium Battery as Carry On Luggage
>
>
> Taking KX3 on Airlines -Any issues/hassles with TSA/etc  here days - with
> Bio-Engg 12V 7Ah Lithium Battery as Carry On Luggage
>
>
> USA to Hawaii
>
>
> USA oversea's
>
>
> Any recent traveler's experience with Airport screeners ?
>
>
> etc
>
>
> Mike
> WB6DJi
>
>
>
>
>
> __
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>
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Re: [Elecraft] Taking KX3 on Airlines -Any issues/hassles with TSA/etc there days - with Bio-Engg 12V 7Ah Lithium Battery as Carry On Luggage

[Doug Turnbull]

Dear OMs and YLs,
 I have travelled across Europe and from USA to Europe with a KX2 and
had no problems - no one commented except the TSA man in JFK seemed to have
been an SWL and commented on how small they were making radios these days.
Surprisingly they did not want me to turn the radio on though I did have it
out of the carryon and on display.   Go for it and do not worry.   

 Take the battery in the radio and remove them when you get to KH6 a
charge only takes two hours so there is no big deal in this; a big advantage
over my KX3.  I had a second batter stored in the LowPro carry case and this
caused no concern - I would have given them the battery if it was a problem.
Enjoy your trip.

 73 Doug EI2CN

-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of kevino
z
Sent: 14 May 2017 16:04
To: Michael Aust
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Taking KX3 on Airlines -Any issues/hassles with
TSA/etc there days - with Bio-Engg 12V 7Ah Lithium Battery as Carry On
Luggage

https://www.faa.gov/about/office_org/headquarters_offices/ash/ash_programs/h
azmat/passenger_info/media/Airline_passengers_and_batteries.pdf

I've brought my KX2 with internal battery numerous times within CONUS. not
sure if Hawaii is any different. Don't have batteries for my KX3, but I did
travel to Europe several times as carry on in pelican case without incident.

-Kevin (KK4YEL)

-
The problem with the world is that the intelligent people are full of
doubts, while the stupid ones are full of confidence.

On May 14, 2017, at 11:57, Michael Aust
> wrote:

Just trying to plan the logistics for taking a KX3 with me
on the Airlines


Mike
WB6DJi




-Original Message-
From: Michael Aust >
To: elecraft >
Sent: Sun, May 14, 2017 8:47 am
Subject: Taking KX3 on Airlines -Any issues/hassles with TSA/etc there days
- with Bio-Engg 12V 7Ah Lithium Battery as Carry On Luggage


Taking KX3 on Airlines -Any issues/hassles with TSA/etc  here days - with
Bio-Engg 12V 7Ah Lithium Battery as Carry On Luggage


USA to Hawaii


USA oversea's


Any recent traveler's experience with Airport screeners ?


etc


Mike
WB6DJi





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Re: [Elecraft] Taking KX3 on Airlines -Any issues/hassles with TSA/etc there days - with Bio-Engg 12V 7Ah Lithium Battery as Carry On Luggage

[Mike Murphy]

I traveled to St. Lucia with my KX3, matching amplifier and power supply. The 
only thing TSA was interested in was my bencher paddle. 

I had a copy of my license in my carrying case, just in case they were 
interested. They were not.

Mike - KI8R 

--
Michael Murphy -KI8R

m...@ki8r.com

twitter.com/ki8r

www.ki8r.com

614-371-8265
--

> On May 14, 2017, at 12:03 PM, kevino z  wrote:
> 
> https://www.faa.gov/about/office_org/headquarters_offices/ash/ash_programs/hazmat/passenger_info/media/Airline_passengers_and_batteries.pdf
> 
> I've brought my KX2 with internal battery numerous times within CONUS. not 
> sure if Hawaii is any different. Don't have batteries for my KX3, but I did 
> travel to Europe several times as carry on in pelican case without incident.
> 
> -Kevin (KK4YEL)
> 
> -
> The problem with the world is that the intelligent people are full of doubts, 
> while the stupid ones are full of confidence.
> 
> On May 14, 2017, at 11:57, Michael Aust 
> > wrote:
> 
> Just trying to plan the logistics for taking a KX3 with me
> on the Airlines
> 
> 
> Mike
> WB6DJi
> 
> 
> 
> 
> -Original Message-
> From: Michael Aust >
> To: elecraft >
> Sent: Sun, May 14, 2017 8:47 am
> Subject: Taking KX3 on Airlines -Any issues/hassles with TSA/etc there days - 
> with Bio-Engg 12V 7Ah Lithium Battery as Carry On Luggage
> 
> 
> Taking KX3 on Airlines -Any issues/hassles with TSA/etc  here days - with 
> Bio-Engg 12V 7Ah Lithium Battery as Carry On Luggage
> 
> 
> USA to Hawaii
> 
> 
> USA oversea's
> 
> 
> Any recent traveler's experience with Airport screeners ?
> 
> 
> etc
> 
> 
> Mike
> WB6DJi
> 
> 
> 
> 
> 
> __
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Re: [Elecraft] KX2 Heatsink

[Walter Underwood]

First, read the specifications. They are on page 54 of the latest KX3 manual.

" 5 W or less recommended for high-duty-cycle modes (FM, AM, DATA). Power will 
automatically be reduced if PA temperature or current limits are exceeded.”

A larger heatsink was introduced a couple of years ago. The serial numbers for 
the new heatsink are listed on the mods page.

http://www.elecraft.com/order_form_parts.htm#kx3 


Description and instructions include this: "The enhanced heat sink is thicker 
than the original and wraps around the bottom of the KX3 as shown in Figure 1. 
The additional mass and area of this heat sink provides as much as twice the 
operating time at full power before the KX3’s protective circuitry 
automatically reduces the power to 5 watts."

http://www.elecraft.com/manual/E740254%20KX3HSMDKT%20Heat%20Sink%20Installation%20rev%20A.pdf
 


For digital modes that require a lot of headroom and linearity (PSK31), I’d 
probably stick with 5 W.

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

> On May 14, 2017, at 8:05 AM, Kevin - K4VD  wrote:
> 
> From a recent post:
> 
> "We have been told by people running the rig in digital modes at 10W the
> unit will thermal down after a few transmit cycles"
> 
> I understand the KX3 also had an early issue with heatsinks that was
> corrected in time by the company making the aftermarket heatsink
> unnecessary I think? I wonder if Elecraft has acknowledged the issue and is
> correcting it for the KX2 also?
> 
> It seems odd to me that an issue like this would go unmentioned and
> unaddressed by Elecraft.
> 
> 73,
> Kev K4VD
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Re: [Elecraft] Taking KX3 on Airlines -Any issues/hassles with TSA/etc here days - with Bio-Engg 12V 7Ah Lithium Battery as Carry On Luggage

[Nicklas Johnson]

The only trouble I had was TSA in Hawaii confiscating my cheap wire
strippers, because they have a rule against tools greater than 8 inches in
length.  Because of course that's how terrorists are going to hijack a
plane-- with a pair of Home Depot wire strippers.  Funnily enough, TSA at
SFO on the way out didn't notice or care.  I had my Buddistick in my
checked luggage.

You definitely want anything with batteries in your carry-on, but you knew
that.

I brought along a photocopy of my license in my carry-on just in case I
needed it, but I didn't.

   Nick

On 14 May 2017 at 08:47, Michael Aust  wrote:

> Taking KX3 on Airlines -Any issues/hassles with TSA/etc  here days - with
> Bio-Engg 12V 7Ah Lithium Battery as Carry On Luggage
>
>
> USA to Hawaii
>
>
> USA oversea's
>
>
> Any recent traveler's experience with Airport screeners ?
>
>
> etc
>
>
> Mike
> WB6DJi
>
>
>
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> Message delivered to n...@n6ol.us
>



-- 
*N6OL*
Saying something doesn't make it true.  Belief in something doesn't make it
real. And if you have to lie to support a position, that position is not
worth supporting.
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Re: [Elecraft] Taking KX3 on Airlines -Any issues/hassles with TSA/etc there days - with Bio-Engg 12V 7Ah Lithium Battery as Carry On Luggage

[kevino z]

https://www.faa.gov/about/office_org/headquarters_offices/ash/ash_programs/hazmat/passenger_info/media/Airline_passengers_and_batteries.pdf

I've brought my KX2 with internal battery numerous times within CONUS. not sure 
if Hawaii is any different. Don't have batteries for my KX3, but I did travel 
to Europe several times as carry on in pelican case without incident.

-Kevin (KK4YEL)

-
The problem with the world is that the intelligent people are full of doubts, 
while the stupid ones are full of confidence.

On May 14, 2017, at 11:57, Michael Aust 
> wrote:

Just trying to plan the logistics for taking a KX3 with me
on the Airlines


Mike
WB6DJi




-Original Message-
From: Michael Aust >
To: elecraft >
Sent: Sun, May 14, 2017 8:47 am
Subject: Taking KX3 on Airlines -Any issues/hassles with TSA/etc there days - 
with Bio-Engg 12V 7Ah Lithium Battery as Carry On Luggage


Taking KX3 on Airlines -Any issues/hassles with TSA/etc  here days - with 
Bio-Engg 12V 7Ah Lithium Battery as Carry On Luggage


USA to Hawaii


USA oversea's


Any recent traveler's experience with Airport screeners ?


etc


Mike
WB6DJi





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Re: [Elecraft] Taking KX3 on Airlines -Any issues/hassles with TSA/etc there days - with Bio-Engg 12V 7Ah Lithium Battery as Carry On Luggage

[Michael Aust]

Just trying to plan the logistics for taking a KX3 with me 
on the Airlines


Mike
WB6DJi




-Original Message-
From: Michael Aust 
To: elecraft 
Sent: Sun, May 14, 2017 8:47 am
Subject: Taking KX3 on Airlines -Any issues/hassles with TSA/etc there days - 
with Bio-Engg 12V 7Ah Lithium Battery as Carry On Luggage


Taking KX3 on Airlines -Any issues/hassles with TSA/etc  here days - with 
Bio-Engg 12V 7Ah Lithium Battery as Carry On Luggage 


USA to Hawaii


USA oversea's 


Any recent traveler's experience with Airport screeners ?


etc


Mike
WB6DJi





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[Elecraft] Taking KX3 on Airlines -Any issues/hassles with TSA/etc here days - with Bio-Engg 12V 7Ah Lithium Battery as Carry On Luggage

[Michael Aust]

Taking KX3 on Airlines -Any issues/hassles with TSA/etc  here days - with 
Bio-Engg 12V 7Ah Lithium Battery as Carry On Luggage 


USA to Hawaii


USA oversea's 


Any recent traveler's experience with Airport screeners ?


etc


Mike
WB6DJi



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[Elecraft] KX2 Heatsink

[Kevin - K4VD]

>From a recent post:

"We have been told by people running the rig in digital modes at 10W the
unit will thermal down after a few transmit cycles"

I understand the KX3 also had an early issue with heatsinks that was
corrected in time by the company making the aftermarket heatsink
unnecessary I think? I wonder if Elecraft has acknowledged the issue and is
correcting it for the KX2 also?

It seems odd to me that an issue like this would go unmentioned and
unaddressed by Elecraft.

73,
Kev K4VD
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[Elecraft] K2 For Club Radio

[Tom Hellem]

Thanks to all who responded to my post. Looks like it's pretty
much unanimous, the K2 makes a great Field Day radio.

You folks are the best!

Tom K0SN
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Re: [Elecraft] New Product Announcement

[MaverickNH]

Hi Howie,

I got your email "Thank you for your order of the Kx22 Heatsink for the
Elecraft KX2.  Elecraft has notified us of a recent modification which
affects the installation procedure of our new Kx22 Heatsink.  It is
relatively minor but requires some additional parts to electrically isolate
the PA FETs from the heatsink.  KX2s which were supplied with this mod from
the factory can be identified by the presence of a piece of foam and copper
tape linking the two FETs as shown in this picture..."

My KX2 with ATU does NOT have the foam/copper tape as SN 00757, as I replied
to your email. But I'm wondering why this recent modification was necessary
from Elecraft - presumably linked to recent revision and not needed for my
older unit?

Bret (aka Charles Jessee)
N4SRN



--
View this message in context: 
http://elecraft.365791.n2.nabble.com/OT-Looking-for-Bay-Area-radio-hikers-with-kids-tp7630287p7630599.html
Sent from the Elecraft mailing list archive at Nabble.com.
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[Elecraft] Looking for a W2 wattmeter

[Tim Cook]

Anyone have a W2 wattmeter for sale? Need one with the 2kw coupler, the vhf/uhf 
coupler would be a bonus.
If you have one you'd like to sell please send particulars including price 
shipped.
Thanks
Tim
NZ8J
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