[Elecraft] Laptop Power Supplies

[Howard Hoyt]

Hi all,

With FD upon us, I have been receiving requests for a low-RFI supply 
like the 14 V Kx33, but in a 19 V version for laptops.  For those of you 
who have such laptops, what is the current demand, and what is the most 
common plug which such a supply would need to have?


Cheers, 73 & good luck all on FD!  I'll once again be part of the 9A 5 W 
CW crew at W4EZ.


Howie - WA4PSC
www.proaudioeng.com

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] ACC1 via Bluetooth HC05 instead of KXSER ?

[Brian Denley]

Rod:
Correct.  Hc05 is Bluetooth 2.0.  The Hm10 is BLE.

Brian 
KB1VBF
Sent from my iPad

> On Jun 19, 2018, at 9:22 PM, Rod Hardman  wrote:
> 
> Running a similar configuration for field Day with KX2, FT8 and a Piglet. 
> It’s a great device and integrates With Pignology’s excellent Hamlog Software 
> (with a field day mode and a Swiss Army knife of utilities.  
> 
> Nick even wrote a multiuser “Server” to run on a Rasp Pi zero to connect from 
> our Hamlog clients - slick. 
> 
> Hours of integration fun
> 
> Rod (VA3ON)
> 
> On Jun 19, 2018, at 09:39, Yngvi (TF3Y)  wrote:
> 
> Have you considered the Piglet by pignoly.net ?
> The Piglet provides CAT via WiFi.
> 
> 73, Yngvi TF3Y
> 
>> On Mon, Jun 18, 2018 at 1:36 PM John Newgas  wrote:
>> 
>> I want to use my KX3 with a 12” Macbook  for FT8 and other digi-modes but
>> it has only one USB port.
>> I thought it would be elegant and lightweight use a HC05 serial to
>> bluetooth adaptor  module for the ACC1 interface to avoid cables like the
>> KXUSB or KXSER.
>> 
>> The HC05 is designed for Arduino level 0 volt low and 3.3 volt high.
>> 
>> Has anyone tried one of these  directly with a KX3 ACC1 but without a
>> MAX232 level shifter ?  Before building a small circuit board i thought it
>> worth asking if anyone else has already tried as I am naturally lazy type.
>> 
>> John N
>> 
>> 
>> 
>> __
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Elecraft@mailman.qth.net
>> 
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to t...@tf3y.net
> 
> 
> 
> -- 
> http://www.tf3y.net
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to va3on.li...@gmail.com
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://ww

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K2 C22 capacitor photos

[Mark Petrovic]

Thanks, Don.

I believe I found it.  Or them, rather.  I found two marked "030" in a bag
labelled "E530065", "2.7pF".  The K2 RF board inventory says C22 is this
very same part number E530065.

Would you please confirm that the 2.7pF parts labelled "030" are indeed C22
for the RF board?

Many thanks.


On Tue, Jun 19, 2018 at 7:42 AM Don Wilhelm  wrote:

> Mark,
>
> I do not have a photo, but it is either a disc ceramic capacitor marked
> with "3.3", or it is a monolythic capacitor which may be marked either
> '3.3' or '339'.
>
> 73,
> Don W3FPR
>
> On 6/19/2018 9:13 AM, Mark Petrovic wrote:
> > Does anyone have a hi-res photo of what C22 (3.3pF) for the K2 (s/n 7809)
> > looks like?  My inventory says I have it, but now I'm not so sure - or, I
> > cannot identify it again.
>


-- 
Mark
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] KPA1500 Linearity

[K9MA]

Yes, the linearity of the two power meters is suspect. However, the 
compression of interest is near the high end for that of both the 
KPA1500 and the K3, so I wouldn't expect their nonlinearity there to 
make much difference. Note that absolute accuracy isn't critical.


73,
Scott K9MA

On 6/19/2018 17:42, Don Wilhelm wrote:

John,

You are exactly right for bring that factor to attention. Typically 
wattmeters use diodes in their detectors, and the response will vary 
by frequency and by the power level.


I would trust only something that has been calibrated to NIST 
traceable standards.  The Telepost LP-100 is one example (and those 
are used on many Elecraft test benches).


While 10% is an OK deviation for amateur purposes, two wattmeters each 
with 10% accuracy can lead to a 20% error in the final measurements.


It is too easy to jump to conclusions by not considering the potential 
errors in measurement accuracy.  If you want 5% accuracy in your 
conclusions, your measurement tools should be accurate to 0.5% - a far 
stretch for wattmeters as we know them.


73,
Don W3FPR

On 6/19/2018 6:25 PM, John Oppenheimer wrote:

Hi Scott,

I wonder how the linearity of the two power meters was evaluated?

Some years ago I checked the K3 and KX3 power meter against two other
meters. They were just within 10%
http://www.kn5l.net/Elecraft/Power.html

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to k...@sdellington.us



--
Scott  K9MA

k...@sdellington.us

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] ACC1 via Bluetooth HC05 instead of KXSER ?

[Rod Hardman]

Running a similar configuration for field Day with KX2, FT8 and a Piglet. It’s 
a great device and integrates With Pignology’s excellent Hamlog Software (with 
a field day mode and a Swiss Army knife of utilities.  

Nick even wrote a multiuser “Server” to run on a Rasp Pi zero to connect from 
our Hamlog clients - slick. 

Hours of integration fun

Rod (VA3ON)

On Jun 19, 2018, at 09:39, Yngvi (TF3Y)  wrote:

Have you considered the Piglet by pignoly.net ?
The Piglet provides CAT via WiFi.

73, Yngvi TF3Y

> On Mon, Jun 18, 2018 at 1:36 PM John Newgas  wrote:
> 
> I want to use my KX3 with a 12” Macbook  for FT8 and other digi-modes but
> it has only one USB port.
> I thought it would be elegant and lightweight use a HC05 serial to
> bluetooth adaptor  module for the ACC1 interface to avoid cables like the
> KXUSB or KXSER.
> 
> The HC05 is designed for Arduino level 0 volt low and 3.3 volt high.
> 
> Has anyone tried one of these  directly with a KX3 ACC1 but without a
> MAX232 level shifter ?  Before building a small circuit board i thought it
> worth asking if anyone else has already tried as I am naturally lazy type.
> 
> John N
> 
> 
> 
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to t...@tf3y.net



-- 
http://www.tf3y.net
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to va3on.li...@gmail.com
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] KX3 ATU problem

[Bill Frantz]

Thanks Brian. I worked with Gary at Elecraft support who was a 
big help in shooting the problem. Your message was also an 
important clue, and maybe knowing about my problem will help you 
with yours.


I ended up taking out the 2M board and the ATU board and the KX3 
worked. I added in the ATU board and it still worked. When I put 
the 2M board in, the problem became intermittent. (GR!) I 
finally got it so I could poke at one corner of the 2M board and 
make the problem appear and disappear.


It appears that my problem was being caused by having the 
antenna coax for the 2M SMA connector touch a toroid on the ATU 
board. The 2M board installation instructions warn about 
allowing that to happen. Just moving it caused the problem to 
appear and disappear. I'm hoping I have cured the problem, but 
time will tell.


73 Bill AE6JV

On 6/19/18 at 9:30 AM, brian.waterwo...@gmail.com (Brian 
Waterworth) wrote:



Hi Bill,

I too suffered from issues as you are now with my KX3.  Into a dummy load I
was getting high SWR numbers.  I have been so busy at work that I haven't
had the time to find the fault, but what does seem to work for me is not to
tighten the case bolts too tightly.  Looser is better, but not so loose
that the rear legs are flopping about.  When I relieve the tightness on
these bolts, SWR values always settle around 1.0-1.2 depending on the
antenna.  Too tight and SWR jumps up to between 3-15.  This sounds to me
like a bad ground somewhere.  Just haven't had the time to investigate.

Another time that I had the types of SWR you are observing (25+, even 45+
for me), a few years ago, I had to send the KX3 back to Elecraft and they
repaired something.  I am not at home now so I can't recall specifically
what they repaired.  The prevailing theory of the issue was perhaps a
static discharge from the antenna during the winter months when I connected
the KX3 one day.  This was my first experience with static discharge in the
antenna system, assuming that was the problem that fried one of the
components in the KX3.  Again, can't recall which component (actually a
surface mount chip on one of the larger components), but it needed to be
replaced.

regards,
Brian
VE3IBW

On Mon, Jun 18, 2018 at 8:42 PM Bill Frantz  wrote:


Thanks for reminding me to look at dumb things.

Yes, the BNC was pugged into the tuner board. Note that the
radio has been working well for a while. I ran FT8 in New
Hampshire using it in April/May. The most recent venture into
the inside was to pull the batteries to recover from a hung
firmware load. That load worked after getting other programs and
the PX3 out of the way.

73 Bill AE6JV

On 6/18/18 at 5:29 PM, ghyoung...@gmail.com (Grant Youngman) wrote:


Probably a dumb question, but did you unplug the jumper from
the BNC connector to the main board and plug it into the tuner board?

Grant NQ5T
K3 #2091, KX3 #8342


On Jun 18, 2018, at 8:04 PM, Bill Frantz  wrote:

AE6JV


---
Bill Frantz| gets() remains as a monument | Periwinkle
(408)356-8506  | to C's continuing support of | 16345 
Englewood Ave
www.pwpconsult.com | buffer overruns. | Los Gatos, 
CA 95032


__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] KPA1500 Linearity

[Bob McGraw K4TAX]

Yes and most power meters are voltage sensing instruments which are 
calibrated to a specific value or load.  Thus is the load being used may 
not be the identical value to which it was calibrated, hence another 
error enters the equation.


To wit, I have 3 "allegedly" 50 ohm dummy loads.  Only one is actually 
50 ohms but others are as low as 45 ohms and as high as 58 ohms, while 
one actually measures 50.5 ohms.   If one is trying to measure power 
then both voltage and current should be measured with a known load and 
then do the math.  If you are using an antenna, it most likely is 
somewhat reactive.  This throws another curve into the ballpark in terms 
of power measurement.


73

Bob, K4TAX


On 6/19/2018 7:15 PM, Fred Jensen wrote:
Most, if not all analog measurement devices are spec'd at % of full 
scale which can lead to high absolute variances if the levels being 
measured are significantly below full scale.  A Bird with a 100W slug 
accurate to 10% of full scale [+/- 5W] would be within spec if it 
indicated a real 10 W signal at 5 W.  Many folks would say, "My K2/10 
will only produce half the power it should."  Most digital 
measurements involve processing circuitry/computation, again which can 
introduce errors in the lower end of a range, and be dependent on 
frequency as well.


Mathematics can be hard.  Arithmetic can be tricky. [:-)

73,

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



__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] KPA1500 Linearity

[Fred Jensen]

Most, if not all analog measurement devices are spec'd at % of full 
scale which can lead to high absolute variances if the levels being 
measured are significantly below full scale.  A Bird with a 100W slug 
accurate to 10% of full scale [+/- 5W] would be within spec if it 
indicated a real 10 W signal at 5 W.  Many folks would say, "My K2/10 
will only produce half the power it should."  Most digital measurements 
involve processing circuitry/computation, again which can introduce 
errors in the lower end of a range, and be dependent on frequency as well.


Mathematics can be hard.  Arithmetic can be tricky. [:-)

73,

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

On 6/19/2018 3:25 PM, John Oppenheimer wrote:

Hi Scott,

I wonder how the linearity of the two power meters was evaluated?

Some years ago I checked the K3 and KX3 power meter against two other
meters. They were just within 10%
http://www.kn5l.net/Elecraft/Power.html

John KN5L

On 06/19/2018 04:56 PM, K9MA wrote:

I just repeated the linearity measurements, on both 40 and 15 meters.  I
used the KPA1500 meter to measure output, and the K3 power setting for
input.

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to k6...@foothill.net


__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] KPA1500 Linearity

[Don Wilhelm]

John,

You are exactly right for bring that factor to attention.  Typically 
wattmeters use diodes in their detectors, and the response will vary by 
frequency and by the power level.


I would trust only something that has been calibrated to NIST traceable 
standards.  The Telepost LP-100 is one example (and those are used on 
many Elecraft test benches).


While 10% is an OK deviation for amateur purposes, two wattmeters each 
with 10% accuracy can lead to a 20% error in the final measurements.


It is too easy to jump to conclusions by not considering the potential 
errors in measurement accuracy.  If you want 5% accuracy in your 
conclusions, your measurement tools should be accurate to 0.5% - a far 
stretch for wattmeters as we know them.


73,
Don W3FPR

On 6/19/2018 6:25 PM, John Oppenheimer wrote:

Hi Scott,

I wonder how the linearity of the two power meters was evaluated?

Some years ago I checked the K3 and KX3 power meter against two other
meters. They were just within 10%
http://www.kn5l.net/Elecraft/Power.html

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] KPA1500 Linearity

[John Oppenheimer]

Hi Scott,

I wonder how the linearity of the two power meters was evaluated?

Some years ago I checked the K3 and KX3 power meter against two other
meters. They were just within 10%
http://www.kn5l.net/Elecraft/Power.html

John KN5L

On 06/19/2018 04:56 PM, K9MA wrote:
> I just repeated the linearity measurements, on both 40 and 15 meters.  I 
> used the KPA1500 meter to measure output, and the K3 power setting for 
> input.
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

[Elecraft] KPA1500 Linearity

[K9MA]

I just repeated the linearity measurements, on both 40 and 15 meters.  I 
used the KPA1500 meter to measure output, and the K3 power setting for 
input.  Results on the two bands were similar, though 15 required much 
more drive.


On 40, the maximum gain occurred at about 800 W out, 17.2 dB.  At 1 kW, 
it was 16.9 dB, and at 1.5 kW it was 15.7 dB.  However, at 1.45 kW the 
gain was 16.2 dB, so there was a lot of compression in that last 55 W. 
The gain compression at 1.5 kW vs 1 kW is 1.2 dB, but only 0.7 dB at 
1.45 kW.  Overall, I'm told this compression is typical of the KPA1500, 
and probably doesn't indicate excessive IMD, at least compared to other 
solid-state amplifiers. It's probably a good idea to be very careful not 
to overdrive it on SSB, though.


The gain drops off at low power, to 16.0 dB at 200 W.  This is 
consistent with the BLF188 data sheet. However, the data sheet shows the 
gain almost perfectly flat to over 1 kW per device. They show maximum 
gain, in fact, at about 1 kW per device, which means gain ought to be a 
bit HIGHER at 1.5 kW than 1 kW for two devices. Since there are two of 
them in the KPA1500, the compression at 1.5 kW is a bit surprising. 
(That's about what one would expect from ONE device at 1.5 kW.) Yes, the 
data sheet curves are for a specific test circuit at 108 MHz, but it's 
still surprising. On the other hand, anyone who has designed electronics 
knows to take the published data sheets skeptically.  Elecraft has, no 
doubt, tested lots of them, and knows their REAL characteristics.


73,

Scott K9MA

--
Scott  K9MA

k...@sdellington.us

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

[Elecraft] K3 receive audio phenomenon

[Erik Basilier]

I was transmitting wspr on 40 at 100 mW from a WSPRLite tx, and monitoring
on an antennaless K3 in SSB mode (just listening in SP3, not trying to
decode). (Background: I have for a while been fascinated with how room
accoustics will sometimes, with a given head position, make the tone in cw
reception almost disappear). Watching the WSPR signal on the P3 at minimum
span, I could see two sideband peaks well separated from the carrier. Tuning
slowly I noticed something similar to the cw/room accoustics phenomenon: At
a certain tuning point the whistle from the speaker got very quiet. Moving
my head around I concluded that this was probably not room accoustics but
some kind of characteristic of the wspr modulation. Be that as it may, then
came a big surprise, and here is my main issue for the group: Suddenly there
was a loud click followed by complete silence, which lasted a second or so.
It was like someone had ripped the speaker cable out of the radio. The
normal sound then came back, but several seconds later the click and silence
came again. This seemed to cycle forever. The picture on the P3 remained
steady, so the wspr tx did not interrupt its operation, and the K3 front end
kept operating normally. I then tuned around, changed the rx to cw, etc, and
the phenomenon went away. Normally I would take time to study further before
bothering the group, since many things could cause a break in rx audio, but
I have not been able to repeat it. One thought that came to mind was that
somehow the K3 dsp got saturated and hickuped, but the received signal was
quite weak on a quiet band, only about 20 or 30 dB above noise, and hardware
agc should prevent that anyway. While I am waiting for something similar to
happen in the future, I am just asking the group if anyone has had a similar
experience.

Thanks in advance,
73,
Erik K7TV

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] KPA1500 and KPA500 set up question

[Bob Wilson, N6TV]

On Tue, Jun 19, 2018 at 10:55 AM, Earl  wrote:

> Presently I have the K3/KPA500/KAT500 in line with the AUX Cable connected
> to a N6TV Y-BOX.
>
> I now have the KPA1500 connected to the Y-BOX also. All looks good.
>
> Presently the KPA500 powers on when the K3 is turned on.
>
> Is there a setting, that I can't find, to not have the KPA500 turn on
> automatically.
>

Hi Earl,

It looks like you ordered a v1.3 Y-BOX, so all 15-pins of all five
connectors are wired parallel.  Pin 8 is the "Power On" pin.  Pulsing that
pin low will cause a KPA500 or KPA1500 amplifier to power up.  Powering up
the K3 could cause such a pulse if you have the wrong cable connected
between things.  Pin 8 of the KPA1500 and KPA500 could also be connected in
parallel to each other.

Solution:  use an Elecraft AUX cable, not a 15-pin cable or VGA monitor
cable, between the Y-BOX, the KAT500, and the KPA1500.  This cable has no
connection on the power on pin.

The recommended way to correctly connect these devices together would be:

K3 ACC Port -> 15 pin M/M cable -> Y-BOX input

Y-BOX v1.3 Output 1 -> Elecraft M/F AUX cable -> KAT500 -> 15 pin M/F cable
(or another AUX cable) -> KPA500
Y-BOX v1.3 Output 2 -> Elecraft M/F AUX cable -> KPA1500
Y-BOX v1.3 Outputs 3/4 -> Other devices (Band Decoder, MK2R+, RemoteRig
etc.)


Some Elecraft AUX cables were modified to short Pin 11 (DIGOUT1) to Pin 8
to allow for remote power on.  If you bought the cable second-hand, it may
have been modified to do that.

FYI, for Y-BOX v2.1 (upgrades available), only one Elecraft AUX cable would
be needed to connect all three devices (KAT500, KPA500, KPA1500), because the
new Y-BOX v2.1 has one dedicated "AMP AUX" port, which by default has no
connection in pins 1, 4, 6, 7, and 8, same as the AUX cable).  So it can be
wired like this:

K3 ACC Port -> 15 pin MM cable -> Y-BOX input

Y-BOX v2.1 AMP AUX Output -> 15 pin M/F cable -> KAT500 -> 15 pin M/F cable
-> KPA500
Y-BOX v2.1 Output 2 -> Elecraft M/F AUX cable -> KPA1500
Y-BOX v2.1 Outputs 3/4 -> Other devices (Band Decoder, MK2R+, RemoteRig
etc.)


73,
Bob, N6TV
https://bit.ly/Y-BOX
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] KPA1500 and KPA500 set up question

[John Langdon]

I think you mean the KPA500 is coming on with the K3 but the KPA1500 is not.  

You can run an RCA phono patch cable from the 12V out on the K3 to the REM jack 
on the KPA1500 and it will turn on when the K3 does.

73 John N5CQ


-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Earl
Sent: Tuesday, June 19, 2018 12:55 PM
To: Elecraft 
Subject: [Elecraft] KPA1500 and KPA500 set up question

Received my new KPA1500 yesterday ordered early March. Yea!!

Presently I have the K3/KPA500/KAT500 in line with the AUX Cable connected to a 
N6TV Y-BOX.

I now have the KPA1500 connected to the Y-BOX also. All looks good.

Presently the KPA500 powers on when the K3 is turned on.

Is there a setting, that I can't find, to not have the KPA500 turn on 
automatically.

I have looked through both config menus and manuals also Fred Cady's book for 
the K3.

Thanks in advance,

Earl  N5ZM..

__
Elecraft mailing list
Home: 
https://nam04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmailman.qth.net%2Fmailman%2Flistinfo%2Felecraft=02%7C01%7C%7Ccbdbbca76dcb4e44d11208d5d60df3ad%7C84df9e7fe9f640afb435%7C1%7C0%7C636650277761687805=S5MISY4Ov6s0GU7YV8anlLHJt1ELGbh0uz2FK%2FK%2FkdQ%3D=0
Help: 
https://nam04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmailman.qth.net%2Fmmfaq.htm=02%7C01%7C%7Ccbdbbca76dcb4e44d11208d5d60df3ad%7C84df9e7fe9f640afb435%7C1%7C0%7C636650277761687805=sGHzdGlg2OL5xGBcRFDgcn7P37Y8qkEwf4XaJh4XES0%3D=0
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: 
https://nam04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.qsl.net=02%7C01%7C%7Ccbdbbca76dcb4e44d11208d5d60df3ad%7C84df9e7fe9f640afb435%7C1%7C0%7C636650277761687805=IjepkuTXcvPkkHWwMnd9lzyafgqdRd6s9tOuNwqwFfM%3D=0
Please help support this email list: 
https://nam04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.qsl.net%2Fdonate.html=02%7C01%7C%7Ccbdbbca76dcb4e44d11208d5d60df3ad%7C84df9e7fe9f640afb435%7C1%7C0%7C636650277761687805=YM8CHpdf1pO6%2FVe8tQ9F8enbmRKhVJ5Ik05QFhEPuzg%3D=0
Message delivered to woyb10...@outlook.com
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

[Elecraft] KPA1500 and KPA500 set up question

[Earl]

Received my new KPA1500 yesterday ordered early March. Yea!!

Presently I have the K3/KPA500/KAT500 in line with the AUX Cable connected to 
a N6TV Y-BOX.


I now have the KPA1500 connected to the Y-BOX also. All looks good.

Presently the KPA500 powers on when the K3 is turned on.

Is there a setting, that I can't find, to not have the KPA500 turn on 
automatically.


I have looked through both config menus and manuals also Fred Cady's book for 
the K3.


Thanks in advance,

Earl  N5ZM..

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] KX3 ATU problem

[Brian Waterworth]

Hi Bill,

I too suffered from issues as you are now with my KX3.  Into a dummy load I
was getting high SWR numbers.  I have been so busy at work that I haven't
had the time to find the fault, but what does seem to work for me is not to
tighten the case bolts too tightly.  Looser is better, but not so loose
that the rear legs are flopping about.  When I relieve the tightness on
these bolts, SWR values always settle around 1.0-1.2 depending on the
antenna.  Too tight and SWR jumps up to between 3-15.  This sounds to me
like a bad ground somewhere.  Just haven't had the time to investigate.

Another time that I had the types of SWR you are observing (25+, even 45+
for me), a few years ago, I had to send the KX3 back to Elecraft and they
repaired something.  I am not at home now so I can't recall specifically
what they repaired.  The prevailing theory of the issue was perhaps a
static discharge from the antenna during the winter months when I connected
the KX3 one day.  This was my first experience with static discharge in the
antenna system, assuming that was the problem that fried one of the
components in the KX3.  Again, can't recall which component (actually a
surface mount chip on one of the larger components), but it needed to be
replaced.

regards,
Brian
VE3IBW

On Mon, Jun 18, 2018 at 8:42 PM Bill Frantz  wrote:

> Thanks for reminding me to look at dumb things.
>
> Yes, the BNC was pugged into the tuner board. Note that the
> radio has been working well for a while. I ran FT8 in New
> Hampshire using it in April/May. The most recent venture into
> the inside was to pull the batteries to recover from a hung
> firmware load. That load worked after getting other programs and
> the PX3 out of the way.
>
> 73 Bill AE6JV
>
> On 6/18/18 at 5:29 PM, ghyoung...@gmail.com (Grant Youngman) wrote:
>
> >Probably a dumb question, but did you unplug the jumper from
> >the BNC connector to the main board and plug it into the tuner board?
> >
> >Grant NQ5T
> >K3 #2091, KX3 #8342
> >
> >>On Jun 18, 2018, at 8:04 PM, Bill Frantz  wrote:
> >>
> >>AE6JV
> >
> >
> ---
> Bill Frantz| Truth and love must prevail  | Periwinkle
> (408)356-8506  | over lies and hate.  | 16345
> Englewood Ave
> www.pwpconsult.com |   - Vaclav Havel | Los Gatos,
> CA 95032
>
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to brian.waterwo...@gmail.com
>
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] ACC1 via Bluetooth HC05 instead of KXSER ?

[Bob Snyder]

MacOS supports the Serial Port Profile of Bluetooth just fine; it’s only iOS 
for the iPhone and iPad (and presumably tvOS for Apple TV though I haven’t 
looked) that doesn’t support SPP.  

73,
Bob N2KGO

> On Jun 19, 2018, at 4:40 AM, Petr, OK1RP/M0SIS  wrote:
> 
> Hi John,
> 
> if I remember well the HC05 is not supporting BLE. You need the BT class 4.0
> or higher for all Apple gears if I am right.
> 
> 73 - Petr, OK1RP
> 
> 
> 
> 
> 
> -
> http://ok1rp.blogspot.com
> --
> Sent from: http://elecraft.365791.n2.nabble.com/
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to rsny...@toontown.erial.nj.us

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K2 C22 capacitor photos

[Don Wilhelm]

Mark,

I do not have a photo, but it is either a disc ceramic capacitor marked 
with "3.3", or it is a monolythic capacitor which may be marked either 
'3.3' or '339'.


73,
Don W3FPR

On 6/19/2018 9:13 AM, Mark Petrovic wrote:

Does anyone have a hi-res photo of what C22 (3.3pF) for the K2 (s/n 7809)
looks like?  My inventory says I have it, but now I'm not so sure - or, I
cannot identify it again.

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] ACC1 via Bluetooth HC05 instead of KXSER ?

[John Newgas]

A Piglet is overkill for my needs - its needs power and is another box. 
At the moment my fixed station is in the roof - loft, and connects to a 
Raspberry Pi 3 running  WSJT-X.

I can operate it all via VNC from downstairs in comfort.  It also functions 
much as a Piglet when using Ser2Net to give a virtual serial port accessed just 
like Piglet.
This keeps my home tidy and is friendly towards my XYL.

The Bluetooth solution would be small and elegant for ACC1 - and portable for 
travel.   Further research has now shown the IRXON Bluetooth Serial Adaptor 
BT578 adapter , which is moderately priced.

My idea was if the HC05 can interface directly then it would give  very low 
cost wire free solution.


John N



> On 19 Jun 2018, at 14:39, Yngvi (TF3Y)  wrote:
> 
> Have you considered the Piglet by pignoly.net  ?
> The Piglet provides CAT via WiFi.
> 
> 73, Yngvi TF3Y
> 
> On Mon, Jun 18, 2018 at 1:36 PM John Newgas  > wrote:
> I want to use my KX3 with a 12” Macbook  for FT8 and other digi-modes but it 
> has only one USB port. 
> I thought it would be elegant and lightweight use a HC05 serial to bluetooth 
> adaptor  module for the ACC1 interface to avoid cables like the KXUSB or 
> KXSER.
> 
> The HC05 is designed for Arduino level 0 volt low and 3.3 volt high. 
> 
> Has anyone tried one of these  directly with a KX3 ACC1 but without a MAX232 
> level shifter ?  Before building a small circuit board i thought it worth 
> asking if anyone else has already tried as I am naturally lazy type.
> 
> John N
> 

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] ACC1 via Bluetooth HC05 instead of KXSER ?

[Yngvi (TF3Y)]

Have you considered the Piglet by pignoly.net ?
The Piglet provides CAT via WiFi.

73, Yngvi TF3Y

On Mon, Jun 18, 2018 at 1:36 PM John Newgas  wrote:

> I want to use my KX3 with a 12” Macbook  for FT8 and other digi-modes but
> it has only one USB port.
> I thought it would be elegant and lightweight use a HC05 serial to
> bluetooth adaptor  module for the ACC1 interface to avoid cables like the
> KXUSB or KXSER.
>
> The HC05 is designed for Arduino level 0 volt low and 3.3 volt high.
>
> Has anyone tried one of these  directly with a KX3 ACC1 but without a
> MAX232 level shifter ?  Before building a small circuit board i thought it
> worth asking if anyone else has already tried as I am naturally lazy type.
>
> John N
>
>
>
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to t...@tf3y.net



-- 
http://www.tf3y.net
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

[Elecraft] K2 C22 capacitor photos

[Mark Petrovic]

Does anyone have a hi-res photo of what C22 (3.3pF) for the K2 (s/n 7809)
looks like?  My inventory says I have it, but now I'm not so sure - or, I
cannot identify it again.

Thanks.
Mark
AE6RT

-- 
Mark
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] ACC1 via Bluetooth HC05 instead of KXSER ?

[Petr, OK1RP/M0SIS]

Hi John,

if I remember well the HC05 is not supporting BLE. You need the BT class 4.0
or higher for all Apple gears if I am right.

73 - Petr, OK1RP





-
http://ok1rp.blogspot.com
--
Sent from: http://elecraft.365791.n2.nabble.com/
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com