from:"Jim Miller"

[Elecraft] KPOD intermittent

2023-03-21 Thread Jim Miller

I really like the KPOD...when it works.

I find the buttons occasionally non responsive resulting in nothing being
sent. After a few taps it eventually works again for a while.

Of course this mostly occurs when trying to send a call in a pileup or a
reply 599TU.

Is this a button thing that needs replacing or something in the K4 being
non responsive?

I think it's the KPOD itself since it also happened on my old K3S.

Jim ab3cv
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[Elecraft] KPA1500 produces birdie

2023-03-18 Thread Jim Miller

I've been chasing RFI over the last couple of days and one surprising
source is the KPA1500. It produces a birdie at 1832.4 which wanders a bit.
Turning off the power to the KPA1500 results in it going away slowly as
some capacitor discharges.

Turn it back on again and the birdie pops up again.

It's about 12db above the noise floor so not insignificant.

FWIW the whole station other than the KPA1500 is currently running on a big
gel cell which isn't my normal practice, only when chasing RFI.

Anyone else see this?

Jim ab3cv
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[Elecraft] K3s noise baseline for 6m

2021-05-09 Thread Jim Miller

I have my ANT2 connected to a 50ohm load on my K3s and reading the noise on
my P3. I turn the integration on the P3 to the max (20) so as to be able to
read the level easier.

With the K3s PRE2 enabled and a 5Khz span on the P3 I read -162db on the P3.

I'd like to compare that to others to see what they read.

Anyone?

73

jim ab3cv
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[Elecraft] Fair price for a used KPA500?

2020-11-20 Thread Jim Miller

I'm looking to buy a used KPA500 from a friend. What would be a fair price?

73

jim ab3cv
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Re: [Elecraft] K4 Remote Antenna button

2020-11-02 Thread Jim Miller

Nothing yet. I'm waiting to see what is possible.

Thanks!

jim ab3cv

On Mon, Nov 2, 2020 at 11:18 AM Wayne Burdick  wrote:

>
> > On Nov 2, 2020, at 7:51 AM, Jim Miller  wrote:
> >
> > This is mentioned in the online manual. However there's no suggestion as
> to
> > how it would interact with an external device. Obviously some code inside
> > the K4 would need to do some signalling, perhaps written by an approved
> ISV.
> >
> > How would it physically transmit commands? USB, Ethernet?
>
>
> USB, Ethernet, or RS232. There's no limit on how this could be done, but
> it hasn't been added yet. Do you have a particular antenna switch or other
> device in mind? It could also be a rotator, etc.
>
> 73,
> Wayne
> N6KR
>
>
>
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[Elecraft] K4 Remote Antenna button

2020-11-02 Thread Jim Miller

This is mentioned in the online manual. However there's no suggestion as to
how it would interact with an external device. Obviously some code inside
the K4 would need to do some signalling, perhaps written by an approved ISV.

How would it physically transmit commands? USB, Ethernet?

I don't see many other choices.

Thanks

Jim ab3cv
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Re: [Elecraft] Smoke detectors

2020-10-29 Thread Jim Miller

Every AHJ is different. Find out what yours says.

Jim ab3cv

On Thu, Oct 29, 2020 at 10:16 PM Hank via Elecraft 
wrote:

> We switched to wireless alarm connected, internal battery detectors due to
> the occasional RFI interference caused by running a little power on 80
> meters. Our alarm company actually had some experience with RFI issues and
> made the recommendation. I installed them and have a calendar reminder to
> swap the batteries every fall when the time changes.
>
> Local fire code does not require detectors. Insurance folks give us a
> break on rates for having them - wired or otherwise here in Ga.
>
> Hank
> K4HYJ
>
> > On Oct 29, 2020, at 5:36 PM, Jim Brown 
> wrote:
> >
> > Most RFI to/from ham radio and "devices" is caused by poorly designed
> electronics using interconnected wiring as TX/RX antennas. Because of the
> frequencies on which they operate, WiFi-connected devices with no exterior
> wiring are inherently FAR less likely to create or receive RFI IF they
> operate on internal batteries. If running from the AC line or a switching
> power supply (wall wart, wall lump, etc.) the PSU will almost certainly
> create RFI noise and wiring both on the AC and DC side will radiate it.
> >
> > Bottom line -- choose stand-alone devices with internal batteries and no
> external wiring for minimum RFI.
> >
> > In your situation, I would try one of them before returning them.
> >
> > 73, Jim K9YC
> >
> >> On 10/29/2020 12:57 PM, Harlan Sherriff via Elecraft wrote:
> >> Dave, I totally agree. I am sure the “problem” the manufacturer is
> cautioning about is RF, since my original post was about “wireless
> connected” detectors. My gripe was nothing in the sales literature warned
> against it. Not till I bought the units and read the installation guide
> >> Sent from my iPhone
>  On Oct 29, 2020, at 3:51 PM, Dave B via Elecraft<
> elecraft@mailman.qth.net>  wrote:
> >>>
> >>> Well, RF (AKA "Radio Waves") can falsely trigger all sorts of
> equipment
> >>> that was not "designed" to work with, or be influenced by them.
> >>>
> >>> That is the classic EMC Susceptibility or Immunity problem.  Basically,
> >>> poor design and/or implementation of the affected (or sometimes bad
> >>> installation of an otherwise good) device.
> >
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Re: [Elecraft] Smoke detectors

2020-10-29 Thread Jim Miller

Strongly suggest contacting county fire marshal before selecting wireless
only detectors.

You don’t want to violate code and have any insurance claim denied if these
is an event.

Jim ab3cv



On Thu, Oct 29, 2020 at 5:38 PM Jim Brown  wrote:

> Most RFI to/from ham radio and "devices" is caused by poorly designed
> electronics using interconnected wiring as TX/RX antennas. Because of
> the frequencies on which they operate, WiFi-connected devices with no
> exterior wiring are inherently FAR less likely to create or receive RFI
> IF they operate on internal batteries. If running from the AC line or a
> switching power supply (wall wart, wall lump, etc.) the PSU will almost
> certainly create RFI noise and wiring both on the AC and DC side will
> radiate it.
>
> Bottom line -- choose stand-alone devices with internal batteries and no
> external wiring for minimum RFI.
>
> In your situation, I would try one of them before returning them.
>
> 73, Jim K9YC
>
> On 10/29/2020 12:57 PM, Harlan Sherriff via Elecraft wrote:
> > Dave, I totally agree. I am sure the “problem” the manufacturer is
> cautioning about is RF, since my original post was about “wireless
> connected” detectors. My gripe was nothing in the sales literature warned
> against it. Not till I bought the units and read the installation guide
> >
> > Sent from my iPhone
> >
> >> On Oct 29, 2020, at 3:51 PM, Dave B via Elecraft<
> elecraft@mailman.qth.net>  wrote:
> >>
> >> Well, RF (AKA "Radio Waves") can falsely trigger all sorts of equipment
> >> that was not "designed" to work with, or be influenced by them.
> >>
> >> That is the classic EMC Susceptibility or Immunity problem.  Basically,
> >> poor design and/or implementation of the affected (or sometimes bad
> >> installation of an otherwise good) device.
>
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Re: [Elecraft] K4 Headphones Q

2020-10-18 Thread Jim Miller

Just did an OTA test and Fan Speed 2 was inaudible but Fan speed 3 could be
easily heard. But since I've never seen Fan 3 in an SSB environment that I
can remember I think this will do. Obviously other shack noise similar to
FS3 would also be an issue but that never happens here. M/M environments
may not work.

I'll run a test later with my ModMic to see how that fares vs fan speed
setting for comparison.

73

jim ab3cv

On Sun, Oct 18, 2020 at 10:42 AM Jim Miller  wrote:

>
> https://www.amazon.com/gp/product/B07W3W9LHV/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8=1
>
> jim ab3cv
>
> On Sun, Oct 18, 2020 at 10:39 AM Rich NE1EE <73.de.ne...@gmail.com> wrote:
>
>> On 2020-10-18 10:10:-0400, Jim Miller wrote:
>> >I took a chance on the QC-35 while on sale and so far I'm pleased. I also
>> >bought an accessory boom mike that plugs into the connector on the QC-35
>> >and so far that has worked well in OTA tests.
>>
>> Which boom mike do you have?
>>
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>
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Re: [Elecraft] K4 Headphones Q

2020-10-18 Thread Jim Miller

https://www.amazon.com/gp/product/B07W3W9LHV/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8=1

jim ab3cv

On Sun, Oct 18, 2020 at 10:39 AM Rich NE1EE <73.de.ne...@gmail.com> wrote:

> On 2020-10-18 10:10:-0400, Jim Miller wrote:
> >I took a chance on the QC-35 while on sale and so far I'm pleased. I also
> >bought an accessory boom mike that plugs into the connector on the QC-35
> >and so far that has worked well in OTA tests.
>
> Which boom mike do you have?
>
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Re: [Elecraft] K4 Headphones Q

2020-10-18 Thread Jim Miller

I took a chance on the QC-35 while on sale and so far I'm pleased. I also
bought an accessory boom mike that plugs into the connector on the QC-35
and so far that has worked well in OTA tests. My QC-15 no longer attenuates
my KPA1500 fans beyond just covering my ears with the cups so something has
gone wrong with those. The QC-35 are very effective. I use a ModMic with
the QC-15 which works very well and may substitute for the accessory mike
if that doesn't pan out.

The boom mike came with a much more rugged cable than the one which came
with the QC-35. I was concerned about the mike moving but with the shirt
clip I find it stays in place to my satisfaction. I don't know if it will
reject amp fan noise however. I'll have to try that today. The fan never
gets above speed 2 on SSB so not much of a challenge. The boom mike came
with a TRRS to dual TRS splitter which worked well on the back on my K3s.

The QC35 claims 40hrs of battery life when wired which is far more time
than I'll ever put in any contest so that isn't a concern. When unplugged
it becomes a Bluetooth set which I've paired with both my phone and PC.
That means that I no longer need a PC headset cluttering up my desk.for
when I want to do MorseRunner or listen to a Youtube session.

73 and stay safe!

jim ab3cv
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Re: [Elecraft] K4 Headphones Q

2020-10-14 Thread Jim Miller

How about latency for CW either wired or wireless?

How do you deal with battery life in contesting?

Stay safe!

Jim ab3cv

On Wed, Oct 14, 2020 at 10:35 AM Jim McDonald  wrote:

> Over the ear - very comfortable.
>
> Top rated (87) by Consumer Reports - tied with the new model.
>
> 73,  Jim N7US
>
> -Original Message-
>
> Do the QC-35 rest on your ear or are they over the ear?
>
> Rich - N5ZC
>
> On 10/14/2020 7:59 AM, Jim McDonald wrote:
> > I just bought a pair yesterday at a closeout price of $170 from my local
> Costco.  They have been discontinued.  Costco online is now out of stock,
> but some stores still have them.  Amazon has them for $199 now.
> >
> > My favorite headphones up to now has been Sennheiser HD 280 PRO but
> these sound great and eliminate the noise from my KPA1500 with the fan on
> #2 and a nearby water heater fan.  No comparison with my old QC2 headphones.
> >
> > 73,  Jim N7US
> >
> > -Original Message-
> >
> >
> > I also use a QC-35. When plugged in with a cord, the power must be on
> for the noise cancelling to work. That also turns on the DSP which greatly
> improves audio quality.
> >
> > ED / W2RF
> >
> >
> >
> >
> > -Original Message-
> >
> > Jim,
> >
> > I only use my Bose QC-35 when:
> >
> > 1. on the cell phone.
> > 2. mowing the yard/tuning my motorcycle 3. whenever using the K3 &
> > K3s.
> >
> > The noise cancelling works perfectly with the blower from the Alpha
> > 77SX right next to me, I only hear what is coming in from the radio.
> > Why your
> > QC-35 does not noise cancel when attached via cord is not normal, mine
> is a Godsend.
> >
> > 73,
> >
> > Gary
> > KA1J
> >
> >> I have Bose QC-35 headphones. Noise canceling does not work on any
> >> radio when you use the cord. Headphones work well with a Bluetooth
> >> connection.What kind of device do I use, if and when my K4 is
> >> delivered?Also on the K4 can a USB port expander be used on the K4
> >> with multiple devices and what is the K4 limited  to?Jim K9TFSent
> >> from my T-Mobile 4G LTE Device
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Re: [Elecraft] [K4] Three RX antennas?

2020-10-12 Thread Jim Miller

Thanks!

jim ab3cv

On Sun, Oct 11, 2020 at 11:03 PM Wayne Burdick  wrote:

> This can be easily set up. The K4 will protect the receivers, too.
>
> Wayne
>
>
>
> 
> elecraft.com
>
> On Oct 11, 2020, at 12:10 PM, Jim Miller  wrote:
>
> I have an application where I would use 3 RX antennas. Two could use the
> RX1 and RX2 ports but the third would use one of the ports provided by the
> KAT4.
>
> My concern is avoiding accidentally transmitting thru that third RX port.
> Will the ANT CFG constraint of the TX antenna to ANT1 ensure that?
>
> 73
>
> jim ab3cv
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[Elecraft] [K4] Three RX antennas?

2020-10-11 Thread Jim Miller

I have an application where I would use 3 RX antennas. Two could use the
RX1 and RX2 ports but the third would use one of the ports provided by the
KAT4.

My concern is avoiding accidentally transmitting thru that third RX port.
Will the ANT CFG constraint of the TX antenna to ANT1 ensure that?

73

jim ab3cv
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[Elecraft] Y Cable

2020-09-24 Thread Jim Miller

Can't find the Y cable any longer on the Elecraft web site. Where is it
hiding?

Jim ab3cv
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Re: [Elecraft] Why predistortion ?

2020-09-14 Thread Jim Miller

I ordered my K3 in 2008. The K3s was a modest upgrade. The processing power to 
accomplish predistortion has only become affordable in the last few years and 
is far beyond the capacity remaining in the 12 year old K3. 

Jim abt

On Sep 14, 2020, at 4:44 PM, IK4EWX  wrote:

Why it seem so difficult thing for the great Elecraft rigs? 
Apache Labs Anan rigs, from 2.700 to 4.400 $, all have predistortion
included.
Are their power supply with higher voltages than the 12V of Elecraft?
Ian Ik4EWX



--
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Re: [Elecraft] 630 meter operation on the K4

2020-09-14 Thread Jim Miller

Nice!!

Thanks for the update!

jim ab3cv

On Mon, Sep 14, 2020 at 2:11 PM Wayne Burdick  wrote:

> You can directly set the frequency to this range. There's no need for a
> transverter band.
>
> Test mode will not be needed.
>
> For receive purposes, you can use any of the five antenna jacks. I just
> measured the MDS at -135 dBm, which is more than satisfactory on on this
> band.
>
> For transmit you'll need to use XV OUT and an external amplifier.
>
> 73,
> Wayne
> N6KR
>
>
> > On Sep 14, 2020, at 10:26 AM, Jim Miller  wrote:
> >
> > And will the K4 need to be in "Test" mode as the K3 was required?
> >
> > jim ab3cv
> >
> >
> > On Mon, Sep 14, 2020 at 1:25 PM Jim Miller  wrote:
> > Will the band be evident or will it need to be added? Will there be an
> appropriate XV offset to allow direct reading of the frequency?
> >
> > Thanks!
> >
> > jim ab3cv
> >
> > On Mon, Sep 14, 2020 at 12:35 PM Wayne Burdick 
> wrote:
> > The K4 has receive capability in this band, and will transmit at the XV
> OUT jack well in excess of 0 dBm. (More like +7.) This should be suitable
> for use with an external amplifier.
> >
> > Wayne
> > N6KR
> >
> >
> > > On Sep 14, 2020, at 8:10 AM, Nigel Lemaire  wrote:
> > >
> > > Wondering what capabilities the K4 will have on this (these) bands...
> > >
> > > 73
> > > Nigel
> > > Wa6MSE
> > > __
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Re: [Elecraft] 630 meter operation on the K4

2020-09-14 Thread Jim Miller

And will the K4 need to be in "Test" mode as the K3 was required?

jim ab3cv


On Mon, Sep 14, 2020 at 1:25 PM Jim Miller  wrote:

> Will the band be evident or will it need to be added? Will there be an
> appropriate XV offset to allow direct reading of the frequency?
>
> Thanks!
>
> jim ab3cv
>
> On Mon, Sep 14, 2020 at 12:35 PM Wayne Burdick  wrote:
>
>> The K4 has receive capability in this band, and will transmit at the XV
>> OUT jack well in excess of 0 dBm. (More like +7.) This should be suitable
>> for use with an external amplifier.
>>
>> Wayne
>> N6KR
>>
>>
>> > On Sep 14, 2020, at 8:10 AM, Nigel Lemaire  wrote:
>> >
>> > Wondering what capabilities the K4 will have on this (these) bands...
>> >
>> > 73
>> > Nigel
>> > Wa6MSE
>> > __
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Re: [Elecraft] 630 meter operation on the K4

2020-09-14 Thread Jim Miller

Will the band be evident or will it need to be added? Will there be an
appropriate XV offset to allow direct reading of the frequency?

Thanks!

jim ab3cv

On Mon, Sep 14, 2020 at 12:35 PM Wayne Burdick  wrote:

> The K4 has receive capability in this band, and will transmit at the XV
> OUT jack well in excess of 0 dBm. (More like +7.) This should be suitable
> for use with an external amplifier.
>
> Wayne
> N6KR
>
>
> > On Sep 14, 2020, at 8:10 AM, Nigel Lemaire  wrote:
> >
> > Wondering what capabilities the K4 will have on this (these) bands...
> >
> > 73
> > Nigel
> > Wa6MSE
> > __
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Re: [Elecraft] KPA-1500 SWR fault above 700-800 watts on 160m

2020-09-04 Thread Jim Miller

I’ve seen no mention of modeling and/or measurements performed on any of these 
antennas to see if they are within the match range of the KPA1500. 

Jim ab3cv 

On Sep 4, 2020, at 2:29 AM, Victor Rosenthal 4X6GP  wrote:

I had an interesting experience trying to use a balun in a very demanding 
situation. I'll describe it, and at the end I have a question.

Antenna was a dipole with total length of 10m fed with approximately 480 ohm 
open-wire line. Line length was 10m. I was trying to use this antenna on 40m 
with a power of 1200w.

The first attempt was to use a 5kw DX Engineering 1:4 balun in the shack 
between the open line and coax, feeding the coax with an unbalanced T-network 
tuner. There was a lot of RFI with computers, etc. in the shack. The antenna 
seemed to pick up a lot of local noise. During a period of contest operating, 
the balun overheated, causing soaring SWR and ultimately internal arcing.

Next I added two capacitors in series with the line to tune out the reactance 
(the 1/4 wavelength line inverted the capacitive reactance at the feedpoint of 
the antenna making it inductive at the shack end). This eliminated the 
overheating (it ran a little warm), but the RFI problem remained.

Then I rewired the balun to a 1:1 configuration. This seemed to help a little 
with the RFI. It made tuning easier. But the antenna was still noisy.

At this point I had some really good luck and was able to purchase an old 
Johnson KW Matchbox, which is a link-coupled balanced tuner. I replaced the 
T-network tuner, the balun, and the series capacitors with this unit. The 
antenna is now MUCH quieter and RFI problems have been eliminated.

The lesson I learned is that baluns don't work very well with high SWR, 
especially when the impedance is very reactive.

And now for my question: did I permanently damage my balun when it overheated? 
If so, what is the mechanism of damage? I took it apart and didn't see any 
obvious signs.

73,
Victor, 4X6GP
Rehovot, Israel
Formerly K2VCO
CWops no. 5
http://www.qsl.net/k2vco/
.
> On 03/09/2020 19:05, Jim Brown wrote:
>  A choke inserted into a poorly
> matched or un-matched line is much more likely to overheat and fail.
> Dissipation (heating) is addressed in the 2018 Cookbook.
> 73, Jim K9YC 
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Re: [Elecraft] UPDATE KPA1500 on 160M

2020-09-02 Thread Jim Miller

Have you measured the impedance presented to the amplifier with an antenna 
analyzer?

Jim ab3cv 

On Sep 2, 2020, at 9:03 PM, Adrian  wrote:

Ronnie, well done. Moving to a different ratio balun is a smart obvious move 
towards obtaining a better match,

especially at higher power maintaining insulation specs required.

From curiosity what was the model number of the BD 4:1 balun you had initially 
please ?


> On 3/9/20 10:03 am, Ronnie Hull wrote:
> The original thread has gone off on some tangents. I truly appreciate all the 
> suggestions.
> 
> I seem to have cured the problem!
> 
> ORIGINAL ISSUE was using a new W7FG 160m doublet with 600 ohm true ladder 
> line. The ladder line was hooked to a Balun Design 4:1 ( as recommended by 
> the seller of the antenna). The antenna would be matched great in 160M by the 
> internal ATU in the K3 but with the KPA1500 inline it all went north really 
> fast, resulting in the 1500 faulting out
> 
> Earlier today I swapped in a DX Engineering maxi core 4:1 and it worked a 
> hell of a lot better but the KPA1500 still could not match it better than 9:1
> 
> Mind you this antenna matches superb on other bands with the KPA1500
> 
> Also the KPA1500 works great into a dummy load so I knew the issue was the 
> antenna or part of it
> 
> Last I put in line a DX Engineering maxi core 6:1 and BAM... it worked!
> The KPA1500 matches to 2.5:1 which is good enough for now.
> 
> Next I will experiment with the 600 ohm ladder line length. Right now I’m 
> using 57’.  I will add 10’ tomorrow and see what shakes out and will let you 
> fellas know
> 
> Thanks for all the help and suggestions!
> 
> Ronnie W5SUM
> 
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Re: [Elecraft] K3 Diversity RX question

2020-08-03 Thread Jim Miller

Thanks!

Jim ab3cv

On Mon, Aug 3, 2020 at 5:30 PM Victor Rosenthal 4X6GP 
wrote:

> Yes. When you use diversity you are actually not using the VFO B
> synthesizer for the second rx. They are both fed from synth A. VFO B
> remains available for transmitting.
> I do this all the time.
>
> 73,
> Victor, 4X6GP
> Rehovot, Israel
> Formerly K2VCO
> CWops no. 5
> http://www.qsl.net/k2vco/
> .
> On 03/08/2020 21:26, Jim Miller wrote:
> > When using diversity what happens to the ability to do Split on the K3?
> >
> > Can I still listen to the pileup on VFO B and transmit on the VFO B
> > frequency?
> >
> > Thanks
> >
> > jim ab3cv
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[Elecraft] K3 Diversity RX question

2020-08-03 Thread Jim Miller

When using diversity what happens to the ability to do Split on the K3?

Can I still listen to the pileup on VFO B and transmit on the VFO B
frequency?

Thanks

jim ab3cv
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Re: [Elecraft] KPA1500 in the IARU Contest Last weekend

2020-07-15 Thread Jim Miller

Since it is so narrow I suspect it may be a trapped design or have loading
coils which at 1500w may be heating and detuning as a result.

73

jim ab3cv

On Wed, Jul 15, 2020 at 11:45 AM Ray Spreadbury via Elecraft <
elecraft@mailman.qth.net> wrote:

>
>
> A correspondent asked me why I needed to tune a resonant antenna.
> The reason was because although the Yagi was tuned to resonate at about
> 7.130MHz it unfortunately has a rather narrow bandwidth. I needed to
> operate SSB in this contest in ITU Region 1 SSB, which is between 7.080MHz
> and 7.200MHZ. At 7.080MHz the SWR (with tuner bypassed) was 1.75:1 & at
> 7.200 was 1.95:1. I would be operating at power so I preferred to tune for
> 1.1:1.
> Yes I know the Yagi is not very good with that narrow bandwidth, but it is
> what it is. Normally I operate CW only on 40M & tune it to 7.030 with the
> bandwidth covering the preferred Region 1 CW portion of the band ie7.000 to
> 7.040 and the tuner is not needed.
> 73 Ray G3XLG
>
>
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Re: [Elecraft] KPA1500 in the IARU Contest Last Weekend

2020-07-15 Thread Jim Miller

Describe your antenna system.

Jim ab3cv

On Wed, Jul 15, 2020 at 11:19 AM Nr4c  wrote:

> My first thought is “Heat”!
>
>
> Sent from my iPhone
> ...nr4c. bill
>
>
> > On Jul 15, 2020, at 4:43 AM, Ray Spreadbury via Elecraft <
> elecraft@mailman.qth.net> wrote:
> >
> > Hi
> >
> > I was a member of the UK HQ team for this 24hour IARU event last weekend
> and
> > was one of the two Ops on 40M SSB.
> >
> > We took it in turns to be the Run station every 4 hours and I was using a
> > 40M 2-El yagi at 60ft. I noticed that every 30-60mins, I needed to do a
> > re-tune on the KPA1500 to keep the SWR at or near to 1.1:1, as it seemed
> to
> > gradually creep up over time. The amp temp peaked at 70C but was mostly
> at
> > about 55C. The SWR never got above 1.5:1 using KPA1500 screen but I know
> > that the yagi was really presenting about 1.6:1 at the run frequency.
> When
> > not operating as the Run station the other Op was in Partner mode
> spotting
> > mults & helping with call identification.
> >
> > We were using the WinTest logging program as this enables us to private
> > network with the other UK HQ stations (one on CW & one on SSB for each
> > contest band ie. a total 12 stations at any one time, plus Partners).
> > Because of Covid, this year we were all single Ops working from home
> rather
> > than just a few multi op stations.
> >
> > My K3S & the KPA1500 worked faultlessly for the 24hours as did Wintest
> but I
> > wonder what was the cause of the SWR increasing over time & needing a
> > re-tune?
> >
> > 73 Ray G3XLG
> >
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Re: [Elecraft] K3s noise figure spec

2020-07-01 Thread Jim Miller

The PR6-10 was the latest released preamp as an accessory for the K3 prior
to the K3s with its built in preamp. They are likely very similar.

Here's the manual for the preamp:

https://ftp.elecraft.com/PR/Manuals%20Downloads/PR6-10%20Owners%20Manual%20Rev%20A.pdf


NF is claimed to be 0.7db typical.

73 and stay safe

jim ab3cv

On Tue, Jun 30, 2020 at 7:34 PM Dave Sublette  wrote:

> Does anybody KNOW what the noise figure is for the 50MHz preamp on the
> K3s?  It isn't listed in the specifications.
>
> I need to know in order to make system noise figure calculations.  My
> feedline is going to be long (low loss, but long) and I'm trying to
> determine if I will need a preamp mounted at the antenna.
>
> Thanks,
>
> Dave, K4TO
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Re: [Elecraft] Data protection and recovery techniques

2020-06-13 Thread Jim Miller

Backblaze here

On Jun 13, 2020, at 6:11 PM, Phil Kane  wrote:

On 6/13/2020 12:11 PM, kevinr wrote:

> The tool I use for this third method of data protection is a command
> built into Linux but available to Windows and Mac users too.

My regular backup program is NovaBACKUP PC from NovaStor.  It is a
commercial program that I have been using for many years on all my
computers, making a daily incremental backup  and a weekly full backup
using external drives for storage of the compressed files.  It has a GUI
that permits restoration (both overwrite and write elsewhere) of files
and folders.  It has saved my backsplash several times in the recent
past.There is a linux version called NovaBACKUP Data Center that is
distro-independent.  (No, I don't own stock in NovaStor.)

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

From a Clearing in the Silicon Forest
Beaverton (Washington County) Oregon
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Re: [Elecraft] Two instances of WSJT on K3s with SubRX?

2020-06-10 Thread Jim Miller

I have it working fine now. Thanks for all the suggestions!

jim ab3cv

On Mon, Jun 8, 2020 at 4:23 PM Jim Miller  wrote:

> Has anyone run two instances of WSJT on a single K3s with the SubRX so as
> to be able to monitor both 50.323 and 50.313?
>
> Of course I'll only be able to transmit on the instance that has the Main
> RX but it would be handy to be able to see both.
>
> Thanks
>
> Jim ab3cv
>
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Re: [Elecraft] Two instances of WSJT on K3s with SubRX?

2020-06-09 Thread Jim Miller

Thanks!

I'll keep playing around.

jim ab3cv

On Tue, Jun 9, 2020 at 3:09 AM hdv  wrote:

> Hi Jim,
>
> Yes, I am using this set-up, using the USB audio connection. Works great.
>
> Just select right or left channel microphone audio in the Audio set-up of
> each instance of WSJT.
>
> It could be that you also need to set stereo in Windows 10.
> Go to the advanced microphone audio settings and select stereo with a high
> sampling rate.
> Be aware that this setting is sometimes reset to mono by W10 updates.
>
> 73 Henk
> PA0C
>
>
>
> Verzonden vanaf mijn Samsung Galaxy-smartphone.
>
>
>  Oorspronkelijk bericht 
> Van: Jim Miller 
> Datum: 08-06-2020 22:24 (GMT+01:00)
> Aan: Elecraft Reflector 
> Onderwerp: [Elecraft] Two instances of WSJT on K3s with SubRX?
>
> Has anyone run two instances of WSJT on a single K3s with the SubRX so as
> to be able to monitor both 50.323 and 50.313?
>
> Of course I'll only be able to transmit on the instance that has the Main
> RX but it would be handy to be able to see both.
>
> Thanks
>
> Jim ab3cv
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[Elecraft] Two instances of WSJT on K3s with SubRX?

2020-06-08 Thread Jim Miller

Has anyone run two instances of WSJT on a single K3s with the SubRX so as
to be able to monitor both 50.323 and 50.313?

Of course I'll only be able to transmit on the instance that has the Main
RX but it would be handy to be able to see both.

Thanks

Jim ab3cv
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[Elecraft] K3 with 2m internal transverter

2020-06-05 Thread Jim Miller

Helping a friend to try to get the most out of his 2m equipped K3
especially for EME.

Is it recommended to use the internal preamp when the internal
transverter is in use? I'm guessing "no" due to to 20db transverter RX
gain.

On page 21 of the P3 Owners Manual it describes the integration of the
K3/P3 wrt attenuator and preamp settings. Does the K3 and P3 similarly
communicate the additional 20db gain of the transverter and reflect
that in a downward push of the P3 noise display?

Thanks

Jim ab3cv
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Re: [Elecraft] KPA-1500 faulting on 6m; SWR issues

2020-05-31 Thread Jim Miller

I run 1500w for JT65 EME. No problems. My antenna measures 1.4:1 on the
KPA1500 swr meter and therefore never engages ATU.

Have you vetted your feedline at 1500w? Many times something might be good
at low power and fail at 1500. neither the AA230 or K3s will stress such a
feedline.

I believe the AA230 will do TDR. What does that show? Have you inspected
each connector for corrosion?

jim ab3cv

On Sun, May 31, 2020 at 12:47 PM Peter Dougherty  wrote:

> Hi all (and sorry about the blank post-I don't know what happened there).
>
>
>
> I am experiencing a continuing and repeatable problem with my KPA-1500 on
> 6m. With the amp in bypass I am able to operate normally with my K3s, but
> the amp's meter is showing a 1.8 to 2:1 SWR on that band, despite
> measurements on an AA-230 analyzer and the SWR meter on the K3s itself
> showing it virtually flat (no more than 1.2:1).
>
> Once the amp is placed set to operate it's still showing SWR measurements
> of
> 1.8:1 to 2.1:1 consistently when delivering power. If the tuner is bypassed
> I can't run more than about 600W out before it faults. If I put the tuner
> in
> and click it to tune, it will deliver power just fine at 1200 or 1300 Watts
> for ONE FT8 transmit cycle. When it goes to transmit again it hard-faults
> with too much reflected power. Using 100W straight from the K3s there is no
> issue whatsoever, but *any* level of power from the KPA is liable to trip
> the excess reflected power sensor on the amp.
>
> At first I thought I had an antenna problem, but yesterday I put up a brand
> new 6m LFA and it's doing the same thing. This coming week I plan to
> replace
> the feedline with LMR-400--it's got a combination of 3/8" hardline and
> RG-213 at the moment. Any thoughts on what might be going on here? Is there
> a known-issue on 6m with the KPA?
>
>
> -
> 73 and Good DX
> Peter, W2IRT
>
>
>
> President, North Jersey DX Association
>
> DXCC Card Checker
> Letter O Manager, ARRL Incoming 2nd District QSL bureau
>
>
>
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[Elecraft] K4 modes?

2020-05-16 Thread Jim Miller

If I'm on 6m with my K4D can I have different modes on the separate
receivers? I'd like to have WSJT listening on 50313 on one receiver and
listen to 50.110 to 50.125 in USB on other.

Obviously I'd have to switch VFOs to transmit appropriately.

Thanks

jim ab3cv
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[Elecraft] Quick 6m noise survey

2020-04-18 Thread Jim Miller

For anyone who has a reasonably quiet 6m location, what levels are you seeing 
on the P3 with Span set to 5khz and averaging set to 20?

I get a bit below -150 after rain quiets my powerline noise. 

-160 is a dummy load. 

Thanks

Jim ab3cv 
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Re: [Elecraft] K3s/P3 noise comparisons

2020-04-18 Thread Jim Miller

Alan

You nailed it!

Thanks!

jim ab3cv



On Sat, Apr 18, 2020 at 3:46 PM Alan Bloom  wrote:

> > Since noise power scales with the square root of the bandwidth
>
>
>
> That may be the source of the error.  Noise power scales directly with the
> bandwidth.  (Noise *voltage* scales as the square root of the bandwidth.)
>
>
> Since the P3's effective bandwidth is 11 Hz and the K3 sensitivity is
> specified for 500 Hz, the P3 should be showing
>
> 10 * log (500/11) = 16.5 dB lower than the P3.
>
>
> If the P3 is reading -162 dBm, then that corresponds to -145.5 dBm on the
> K3, close to the -145 dBm spec.
>
>
> Alan N1AL
>
>
>
> On 2020-04-18 12:33, Jim Miller wrote:
>
> I'm doing some work on measuring RFI levels on 6m at my QTH.
>
> One tool I'm using is the P3 with averaging set to 20 to make for easier
> reading.
>
> With the K3s preamp 2 engaged I read -162dbm on the P3 scale when connected
> to a 50ohm dummy load.
>
> I'm trying to correlate that to the MDS numbers for the K3s.
>
> The K3s specification with Pre2 engaged is -145dbm measured in a 500hz
> bandwidth.
>
> The effective bandwidth of the P3 per the P3 manual is Scale/450 which for
> 5K that I'm using is 11hz.
>
> Since noise power scales with the square root of the bandwidth that
> should result in a ratio of SQRT(45) or 6.7. 10*log(6.7) = 8.2
>
> Adding -162 to 8.2 only brings me to -153db.
>
> So it seems I'm missing something. The P3 is telling me the K3s is 8db more
> sensitive than its specification.
>
> What am I missing?
>
> Thanks
>
> JIm ab3cv
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[Elecraft] K3s/P3 noise comparisons

2020-04-18 Thread Jim Miller

I'm doing some work on measuring RFI levels on 6m at my QTH.

One tool I'm using is the P3 with averaging set to 20 to make for easier
reading.

With the K3s preamp 2 engaged I read -162dbm on the P3 scale when connected
to a 50ohm dummy load.

I'm trying to correlate that to the MDS numbers for the K3s.

The K3s specification with Pre2 engaged is -145dbm measured in a 500hz
bandwidth.

The effective bandwidth of the P3 per the P3 manual is Scale/450 which for
5K that I'm using is 11hz.

Since noise power scales with the square root of the bandwidth that
should result in a ratio of SQRT(45) or 6.7. 10*log(6.7) = 8.2

Adding -162 to 8.2 only brings me to -153db.

So it seems I'm missing something. The P3 is telling me the K3s is 8db more
sensitive than its specification.

What am I missing?

Thanks

JIm ab3cv
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Re: [Elecraft] K3S relay noise when using Rx ANT IN port

2020-02-01 Thread Jim Miller

Ray

That is indeed the protective relay on the RX Ant port. You should find a
way to protect the RX Ant port from your TX signal.

There are many products in the market for his purpose. Not sure of the best
choice on your side of the Atlantic.

73

jim ab3cv

On Sat, Feb 1, 2020 at 5:23 PM raycollins  wrote:

>
> My K3S is configured to use the RX ANT IN port for a separate Rx antenna.
> However, on SSB transmissions I can hear an internal relay operating in
> synchronism with peaks in transmit power.  I assume this is a relay in the
> receiver input protection circuit?
>
> Is operation of the relay in this manner normal? Apart from finding the
> noise rather irritating I am concerned about the reliability of the relay
> when it is called upon to operate so many times during a QSO.
>
> The Tx and Rx antennas are about 10 metres apart and I am transmitting 100
> Watts.
>
> Thanks for your help,
>
> Ray M1FJL
>
>
>
> --
> Sent from: http://elecraft.365791.n2.nabble.com/
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Re: [Elecraft] FT8 question

2019-12-16 Thread Jim Miller

Also note if you have a lot of other things running your CPU utilization
may get too high to do decoding. I find that Chrome browser will shut down
decoding until it is closed and decoding promptly then resumes.

Use the Task manager to watch a few cycles and sort on CPU utilization to
see what the big contributors are.

Jim ab3cv

On Mon, Dec 16, 2019 at 2:36 PM Jim Brown  wrote:

> On 12/16/2019 11:03 AM, Eddy Avila wrote:
> > So, my question am I doing something wrong? Any suggestions would be
> > appreciated?
>
> What are you doing to sync your computer's clock?  Do you decode
> signals?  Look at the DT values -- they should be between -0.4 and +0.4
> sec. Do you have the latest WSJT-X software?  Changes to the FT8
> protocol were made a year or so ago, and the old software no longer
> works for FT8. The current version is 2.1.2
>
> Are you sure that Windoze audio is set correctly for the sound input and
> output device you're using? Windoze tends to trash audio setups when it
> does updates.
>
> 73, Jim K9YC
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[Elecraft] K4 RX routing?

2019-11-18 Thread Jim Miller

Like many I'd like to get the feed from my RX antenna to both the RX in and
Aux in. Some just do a parallel connection while others use a splitter.

Does the K4 have any tricks up its sleeve to do this without an external
splitter?

Thanks

Jim ab3cv
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Re: [Elecraft] KPA1500 Thermal problems

2019-11-11 Thread Jim Miller

Unit is now in transit to Elecraft for repair. 

Jim ab3cv 

> On Nov 11, 2019, at 9:03 AM, Jim Miller  wrote:
> 

I participated in the WAE RTTY contest this past weekend and was having 
problems with thermal tripping.

I have resonant antennas for 80, 40 and 20m and had SWR between 1:1 and 1.2:1, 
power nominally set between 1400-1500w.

I found that I couldn't repeatedly CQ without temperature creeping up so I 
paused to around 50% duty cycle to stop that.

However when sending QTC which amount to about 200 characters the temperature 
would rapidly increase and eventually thermal trip.

I took several actions to try to compensate:

I opened the shack windows and bundled up. Shack then stayed at 60f or below.
I immediately manually cranked the fan speed to max (5) when started to send 
QTCs.
I rode the drive power downward as the power increased to stay below the trip 
point of 105c.

Upon taking all these actions I was able to eventually send the QTC packets but 
it was unnerving and unexpected.

This is a low serial number KPA1500 but with latest production firmware.

What have others seen?

73

jim ab3cv
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Re: [Elecraft] KPA1500 Thermal problems

2019-11-11 Thread Jim Miller

It trips off at 105C.

It starts warning with a yellow indication at 100c

Power reduced to 1kw helped slow the rate of temperature increase but still
required a cold room and max fan speed at the beginning to contain it. It
never stopped climbing.

Jim ab3cv

On Mon, Nov 11, 2019 at 9:32 AM Fred Massey  wrote:

> What output power did that reduce too ultimately,  is 105c the design temp
> limit?
>
> On Mon, Nov 11, 2019 at 8:30 AM Jim Miller  wrote:
>
>> " I rode the drive power downward as the power increased to stay below the
>> trip point of 105c."
>>
>> Should have been "as the temperature increased"
>>
>> jim ab3cv
>>
>> On Mon, Nov 11, 2019 at 9:03 AM Jim Miller  wrote:
>>
>> > I participated in the WAE RTTY contest this past weekend and was having
>> > problems with thermal tripping.
>> >
>> > I have resonant antennas for 80, 40 and 20m and had SWR between 1:1 and
>> > 1.2:1, power nominally set between 1400-1500w.
>> >
>> > I found that I couldn't repeatedly CQ without temperature creeping up
>> so I
>> > paused to around 50% duty cycle to stop that.
>> >
>> > However when sending QTC which amount to about 200 characters the
>> > temperature would rapidly increase and eventually thermal trip.
>> >
>> > I took several actions to try to compensate:
>> >
>> > I opened the shack windows and bundled up. Shack then stayed at 60f or
>> > below.
>> > I immediately manually cranked the fan speed to max (5) when started to
>> > send QTCs.
>> > I rode the drive power downward as the power increased to stay below the
>> > trip point of 105c.
>> >
>> > Upon taking all these actions I was able to eventually send the QTC
>> > packets but it was unnerving and unexpected.
>> >
>> > This is a low serial number KPA1500 but with latest production firmware.
>> >
>> > What have others seen?
>> >
>> > 73
>> >
>> > jim ab3cv
>> >
>> __
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Re: [Elecraft] KPA1500 Thermal problems

2019-11-11 Thread Jim Miller

" I rode the drive power downward as the power increased to stay below the
trip point of 105c."

Should have been "as the temperature increased"

jim ab3cv

On Mon, Nov 11, 2019 at 9:03 AM Jim Miller  wrote:

> I participated in the WAE RTTY contest this past weekend and was having
> problems with thermal tripping.
>
> I have resonant antennas for 80, 40 and 20m and had SWR between 1:1 and
> 1.2:1, power nominally set between 1400-1500w.
>
> I found that I couldn't repeatedly CQ without temperature creeping up so I
> paused to around 50% duty cycle to stop that.
>
> However when sending QTC which amount to about 200 characters the
> temperature would rapidly increase and eventually thermal trip.
>
> I took several actions to try to compensate:
>
> I opened the shack windows and bundled up. Shack then stayed at 60f or
> below.
> I immediately manually cranked the fan speed to max (5) when started to
> send QTCs.
> I rode the drive power downward as the power increased to stay below the
> trip point of 105c.
>
> Upon taking all these actions I was able to eventually send the QTC
> packets but it was unnerving and unexpected.
>
> This is a low serial number KPA1500 but with latest production firmware.
>
> What have others seen?
>
> 73
>
> jim ab3cv
>
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[Elecraft] KPA1500 Thermal problems

2019-11-11 Thread Jim Miller

I participated in the WAE RTTY contest this past weekend and was having
problems with thermal tripping.

I have resonant antennas for 80, 40 and 20m and had SWR between 1:1 and
1.2:1, power nominally set between 1400-1500w.

I found that I couldn't repeatedly CQ without temperature creeping up so I
paused to around 50% duty cycle to stop that.

However when sending QTC which amount to about 200 characters the
temperature would rapidly increase and eventually thermal trip.

I took several actions to try to compensate:

I opened the shack windows and bundled up. Shack then stayed at 60f or
below.
I immediately manually cranked the fan speed to max (5) when started to
send QTCs.
I rode the drive power downward as the power increased to stay below the
trip point of 105c.

Upon taking all these actions I was able to eventually send the QTC packets
but it was unnerving and unexpected.

This is a low serial number KPA1500 but with latest production firmware.

What have others seen?

73

jim ab3cv
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Re: [Elecraft] 4k monitors for the shack, late 2019

2019-11-07 Thread Jim Miller

My antennas are 100ft from the shack. I don't pick up any noise from it.

Jim ab3cv

On Thu, Nov 7, 2019 at 6:58 PM Clay Autery  wrote:

> Dude!  That's awesome  One of those would fit between the uprights
> on my shack desk/hutch with 0.2" to spare...  Most efficient use of
> space possible in my setup... dual inputsKVM...
>
> IF ONLY it had an external power supply... :-(
>
> __
> Clay Autery, KY5G
> (318) 518-1389
>
> On 07-Nov-19 16:48, Jim Miller wrote:
> > Or this one which is really nice. Dell U4919
> >
> >
> https://www.dell.com/en-us/shop/dell-ultrasharp-49-curved-monitor-u4919dw/apd/210-arnw/monitors-monitor-accessories
> >
> > My early xmas/birthday gift to myself!!
> >
> > jim ab3cv
> >
> >
> > On Thu, Nov 7, 2019 at 5:40 PM Grant Youngman 
> wrote:
> >
> >> For ham use in the shack it would be pointless (unless you have money
> >> burning holes in your pocket).  If you do photography/video editing or
> >> graphics as a pro — that’s another thing entirely, and where the market
> for
> >> this display lives :-)
> >>
> >> Grant NQ5T
> >>
> >>
> >>
> >>> On Nov 7, 2019, at 5:09 PM, Bert  wrote:
> >>>
> >>> There are always people happy to part with their money! ;-))
> >>>
> >>> Bert  VE3NR
> >>>
> >>>
> >>> On 11/7/2019 4:59 PM, Paul Gacek via Elecraft wrote:
> >>>> Only Apple could come up with a desktop display that cost more than
> the
> >> K4.
> >>>> https://www.apple.com/pro-display-xdr/ <
> >> https://www.apple.com/pro-display-xdr/>
> >>>> Paul
> >>>> W6PNG
> >>>>
> >>>>> On Nov 7, 2019, at 12:47 PM, Tox  wrote:
> >>>>>
> >>>>> Hello all,
> >>>>>
> >>>>> I'm going to continue to eagerly await a K4 for A While. In the
> >>>>> meantime, I've been reconfiguring a room to become my shack, and am
> >>>>> slowly terraforming it.
> >>>>>
> >>>>> I'd like to pick up a couple of HDMI displays to hang on the wall
> >>>>> above/behind the rig and the computer I interface to it. Viewing
> angle
> >>>>> will be shaded, pretty much on-axis due to location, and it will be
> >>>>> right next to the entry of my feedline. Expected usage would be
> >>>>> waterfall/UI and pskreporter type apps.
> >>>>>
> >>>>> What can people suggest for quasi-affordable *RF-quiet* 4k displays
> in
> >>>>> the 27-40" range? (I'm not averse to buying something like one of the
> >>>>> midtier Samsungs, but do not have enough left in the wallet to
> >>>>> consider things like OLED).
> >>>>>
> >>>>> Bonus points for quiet 4k HDMI switchers so I can bring Pis to the
> >> party.
> >>>>> Thanks,
> >>>>>
> >>>>> Scott
> >>>>> AD6YT
> >>>>> --
> >>>>> Scott Small
> >>>>> __
> >>>>> 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 w6...@yahoo.com
> >>>> __
> >>>> Elecraft mailing list
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> >>>
> >>> This list h

Re: [Elecraft] 4k monitors for the shack, late 2019

2019-11-07 Thread Jim Miller

Or this one which is really nice. Dell U4919

https://www.dell.com/en-us/shop/dell-ultrasharp-49-curved-monitor-u4919dw/apd/210-arnw/monitors-monitor-accessories

My early xmas/birthday gift to myself!!

jim ab3cv


On Thu, Nov 7, 2019 at 5:40 PM Grant Youngman  wrote:

> For ham use in the shack it would be pointless (unless you have money
> burning holes in your pocket).  If you do photography/video editing or
> graphics as a pro — that’s another thing entirely, and where the market for
> this display lives :-)
>
> Grant NQ5T
>
>
>
> > On Nov 7, 2019, at 5:09 PM, Bert  wrote:
> >
> > There are always people happy to part with their money! ;-))
> >
> > Bert  VE3NR
> >
> >
> > On 11/7/2019 4:59 PM, Paul Gacek via Elecraft wrote:
> >> Only Apple could come up with a desktop display that cost more than the
> K4.
> >>
> >> https://www.apple.com/pro-display-xdr/ <
> https://www.apple.com/pro-display-xdr/>
> >>
> >> Paul
> >> W6PNG
> >>
> >>> On Nov 7, 2019, at 12:47 PM, Tox  wrote:
> >>>
> >>> Hello all,
> >>>
> >>> I'm going to continue to eagerly await a K4 for A While. In the
> >>> meantime, I've been reconfiguring a room to become my shack, and am
> >>> slowly terraforming it.
> >>>
> >>> I'd like to pick up a couple of HDMI displays to hang on the wall
> >>> above/behind the rig and the computer I interface to it. Viewing angle
> >>> will be shaded, pretty much on-axis due to location, and it will be
> >>> right next to the entry of my feedline. Expected usage would be
> >>> waterfall/UI and pskreporter type apps.
> >>>
> >>> What can people suggest for quasi-affordable *RF-quiet* 4k displays in
> >>> the 27-40" range? (I'm not averse to buying something like one of the
> >>> midtier Samsungs, but do not have enough left in the wallet to
> >>> consider things like OLED).
> >>>
> >>> Bonus points for quiet 4k HDMI switchers so I can bring Pis to the
> party.
> >>>
> >>> Thanks,
> >>>
> >>> Scott
> >>> AD6YT
> >>> --
> >>> Scott Small
> >>> __
> >>> Elecraft mailing list
> >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> >>> Help: http://mailman.qth.net/mmfaq.htm
> >>> Post: mailto:Elecraft@mailman.qth.net
> >>>
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> >>> Message delivered to w6...@yahoo.com
> >> __
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Re: [Elecraft] Dual panadapter on K4 at Pacificon

2019-10-18 Thread Jim Miller

Since the K4 is running Linux if attached to the internet it would likely be 
timesynched by default. 

> On Oct 18, 2019, at 4:31 PM, Doug Turnbull  wrote:
> 

Chuck,
   Do you mean a 24 hour clock?   I too would like this.

 73 Doug EI2CN

-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of hawley, charles j jr
Sent: 18 October 2019 18:04
To: Wayne Burdick
Cc: Elecraft Reflector; elecraft...@groups.io
Subject: Re: [Elecraft] Dual panadapter on K4 at Pacificon

Is a more accurate clock possible? I imagine that depends on available chips
but it's a common topic.

Chuck Jack Hawley 
KE9UW

Sent from my iPhone, cjack 

> On Oct 17, 2019, at 5:24 PM, Wayne Burdick  wrote:
> 
> One of many K4 features we're putting the finishing touches on is the dual
panadapter display, which will make its debut at Pacificon. Please stop by
our booth this weekend if you get a chance.
> 
> 73,
> Wayne
> N6KR
> 
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[Elecraft] K4 Exref?

2019-10-15 Thread Jim Miller

I see there’s a external reference knockout on the K4 back panel but is it a 
option or is the feature part of the base K4?

73

Jim ab3cv 
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Re: [Elecraft] Audio Hum in TX Data Mode

2019-09-27 Thread Jim Miller

Do you hear the human SSB also?

> On Sep 27, 2019, at 8:20 PM, Bill Johnson  wrote:
> 

You can buy an audio isolator cable on line to remove the ground loop issues.  
Just search the topic for devices.  I believe I used Amazon.

Bill
920-421-1172

From: elecraft-boun...@mailman.qth.net  on 
behalf of Conrad PA5Y 
Sent: Friday, September 27, 2019 4:26:55 PM
To: elecraft@mailman.qth.net 
Subject: [Elecraft] Audio Hum in TX Data Mode

I put up a new 6m antenna mainly for EME and I was so looking forward to using 
my K3S. The RX is great, I run it in parallel with 2 other receivers and it 
works very well on EME. However try as I might I cannot get rid of some quite 
bad hum on the TX Audio. I am using USB and before you ask yes I have got a low 
impedance ground from the PC to the K3S although removing it makes absolutely 
no difference.  What did make a difference was moving the radio away from 
sources of magnetic fields such as monitors. However I cannot get rid of it 
completely. It also increases or at least changes when I put my hands on the 
radio.

I have a few other radios located nearby and close to a monitor, pc or PSU and 
they do not suffer from this at all. Is this a common problem, is it a bad 
ground in the audio path internally or magnetic coupling into an audio 
transformer?

It is completely impractical for me to move my radios 10 feet from any magnetic 
fields. Short of wrapping the radio in mu metal I really do not seem to be able 
to fix this.

Any ideas? I have read and understood and followed Jim K9YC's advice and this 
works perfectly for my other 3 radios. I am really at a loss.

73

Conrad PA5Y
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Re: [Elecraft] KPA-1500 failing on 160...AGAIN!

2019-09-27 Thread Jim Miller

Although the RMS voltage is pretty high. The peak voltage is higher
especially if SWR isn't 1:1 along the transmission line.

It could easily be above 1Kv and causing arcing.

73

jim ab3cv


On Fri, Sep 27, 2019 at 10:35 AM Michael Walker 
wrote:

> Like others have said
>
> Even though your analyzer says the antenna is ok, that is only one part.
> It can still be part of the problem at 1500 watts and if memory serves me
> well, that is about 275V (RMS) at 50 ohms.
>
> Something could be breaking down at that voltage so a good visual
> inspection would help.  Look for arcing at each connector, Ununs, Baluns,
> etc.
>
> Mike va3mw
>
> On Fri, Sep 27, 2019 at 9:18 AM Bob McGraw K4TAX 
> wrote:
>
> >  Check for burn marks or carbon traces, both on the inside and outside,
> of
> > the SO-239 connectors.  These may look good with the antenna analyzer but
> > fail under power.
> >
> > I've also had PL-259's arc from center pin to shell on the inside. These
> > required removal/ disassembly of the coax in order to actually find the
> > fault.
> >
> > In all cases, once a flashover occurs, replacement of the connector is
> the
> > only solution.
> >
> > Bob, K4TAX
> >
> >
> > Sent from my iPhone
> >
> > > On Sep 27, 2019, at 6:00 AM, John Langdon 
> wrote:
> > >
> > > If it also happens with a dummy load, and the antenna analyzers shows
> > the same graph as before for R, X, then it is likely one of the
> connectors
> > between the KPA1500 output and the antenna. The one such problem I had
> was
> > old jumper I had put in to add an SWR bridge/monitor. It looked okay, and
> > was finger tight, but when I replaced it in an A/B test, the problem went
> > away.
> > >
> > > The other time, the antenna had changed its impedance curve, but was
> > still 'okay' and the tuner was trying to retune for it.
> > >
> > > 73 John N5CQ
> > >
> > >
> > > -Original Message-
> > > From: elecraft-boun...@mailman.qth.net <
> elecraft-boun...@mailman.qth.net>
> > On Behalf Of Jim Brown
> > > Sent: Friday, September 27, 2019 4:19 AM
> > > To: elecraft@mailman.qth.net
> > > Subject: Re: [Elecraft] KPA-1500 failing on 160...AGAIN!
> > >
> > >> On 9/26/2019 10:26 PM, Peter Dougherty wrote:
> > >> Any idea where to start looking here?
> > >
> > > And if it's a vertical, what about the radial system?
> > >
> > > 73, Jim K9YC
> > > __
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[Elecraft] K3 original - ALC erratic

2019-09-15 Thread Jim Miller

K3 original - ALC erratic

Noticeable on digital mode(s?) (FT8).  The ALC  - set at 4 solid and 5th
flashing - is far more critical than I remember. Seems like I could easily
set it exactly where I wanted it and it would stay there.  Now not so.
Just wondering what can affect the adjustment to where it will drop to 2
bars sometimes and the small change of the "mic" gain will make it higher
than wanted.  Not sure it is a continuous condition.  Just far more critical
than usual.

Thanks, Jim KG0KP

 

 

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[Elecraft] K4 ACC connector to KPA1500

2019-09-02 Thread Jim Miller

Today the accessory connector between the K3s and KPA1500 provides information 
to let the K3s know the KPA1500 is present and operating as well as 
bidirectional information about which band is selected and frequency 
information as well to tune the KAT in the KPA1500. 

Since I have the key line interrupted that is separately provided. 

So can the K4 communicate with the KPA1500 exclusively either by its USB or 
ethernet to replace the serial bus and band data functions from the accessory 
cable?

I hate jackscrews!

Thanks 

Jim ab3cv (who now needs to replace one on RF deck...)
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[Elecraft] K4 IPV6?

2019-08-30 Thread Jim Miller

Will the K4 and its software stack support IPv6?

I’m aware that security by obscurity isn’t a great choice but it is better than 
nothing. 

Jim ab3cv 
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Re: [Elecraft] K4

2019-08-25 Thread Jim Miller

I'm not aware of any Bluetooth implementation that has latency short enough
for CW. I'd be happy to be wrong.

Anyone?

jim ab3cv

On Sun, Aug 25, 2019 at 8:03 PM Tox  wrote:

> Actually, on the note of Bluetooth, and given the security issues announced
> at Usenix Security conference in Santa Clara a week backif Bluetooth is
> supported, ensuring minimum entropy >1 byte would be a Good Thing.
>
> Scott
> AD6YT
>
>
> On Sun, Aug 25, 2019, 2:03 PM Gmail  wrote:
>
> > Probably too late however:
> > 1. Built in Bluetooth capability to allow use of wireless headsets.
> > 2. Ability to inhibit linear key during tune mode. Use with non Elecraft
> > amps.
> >
> > Ray
> > W8LYJ
> >
> >
> > Sent from my iPad
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[Elecraft] Fwd: K4 630m?

2019-08-11 Thread Jim Miller

-- Forwarded message -
From: Jim Miller 
Date: Sun, Aug 11, 2019 at 2:19 PM
Subject: Re: [Elecraft] K4 630m?
To: Wayne Burdick 


Eagerly awaiting Santa's sleigh!!!

73

jim ab3cv

On Sun, Aug 11, 2019 at 2:17 PM Wayne Burdick  wrote:

> Hi Jim,
>
> There will definitely be an improvement along these lines to make it
> easier to use the 630 meter band.
>
> Wayne
> N6KR
>
>
> 
> elecraft.com
>
> On Aug 11, 2019, at 9:47 AM, Jim Miller  wrote:
>
> Will transmission on 630m still require “TEST” mode like the K3? Or will a
> 0hz IF be available when driving an amp.
>
> 73
>
> Jim ab3cv
>
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[Elecraft] K4 630m?

2019-08-11 Thread Jim Miller

Will transmission on 630m still require “TEST” mode like the K3? Or will a 0hz 
IF be available when driving an amp. 

73

Jim ab3cv 

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[Elecraft] For Sale: K3s/P3 combo

2019-06-05 Thread Jim Miller

Loaded Elecraft K3S 100W transceiver with sub-receiver and well equipped
with filters for contesting, DXing and just fun.
Note that the general coverage option permits 2200m and 630m as well.
Since the 250Hz filters are actually around 370Hz I have them cut in at
350Hz and use them as my default filters for CW and RTTY.
The 2.1Khz filter in the main helps in SSB contesting when the band is
crowded.
The 200 filters are often used on 160m to hear the faint DX or in contests
to hear DX in the presence of nearby domestic stations.
I got matched filters where needed to allow for diversity reception but
never had antennas sufficient to try it.

P3 with SVGA option. This is like cheating in DX pileups!

I'm the original owner for each and they've been well kept in a non-smoking
environment. Both operating flawlessly.

K3S-K S/N 10122 with all standard equipment plus installed options:
KPA3A 100W power amp
KAT3A Antenna tuner
KRX3A Sub receiver
KBPF3A General coverage RX filter module
KTCXO3-1 TCXO 1 ppm f/w correction for 0.5 ppm
K3EXREF Ext 10Mhz ref input
KDVR3 Digital voice recorder
KFL3A-2.7K 5 pole in Main RX
KFL3A-2.7K 5 pole matched to main in Sub RX
KFL3A-2.1K in Main RX
KFL3A-250hz 8 pole in Main RX
KFL3A-250hz 8 pole in Sub RX
KFL3A 200hz 5 pole in Main RX
KFL3A 200hz 5 pole matched to main in Sub RX
KFL3B-FM 13Khz filter Main RX

P3-F Panadater S/N 1811: Installed options
P3SVGA P3 SVGA Adapter

>
Power cables for K3s and P3
Coax to connect K3S and P3
Control cables to connect K3S and P3

I prefer to sell as a combo but will consider offers for separates.

Asking price for the combo $4300 shipped. Paypal OK as well as check.

Jim AB3CV
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[Elecraft] K4HD filter physical format

2019-05-29 Thread Jim Miller

Are the K4HD filters the same ones currently used in the K3?

73

Jim ab3cv 
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Re: [Elecraft] K4 RX antenna ports

2019-05-29 Thread Jim Miller

If/when implemented how would the REM ANT control communicate with the 
controlled device?

73

Jim ab3cv 

> On May 28, 2019, at 11:53 PM, Wayne Burdick  wrote:
> 

> n6wg  wrote:
> 
> There are 5 rx ant ports on the K4, 3 UHF and 2 BNC.  I've seen no mention of 
> how they are to be selected though.  In my imagination, I see pressing the RX 
> ANT button putting a list of up to 5 antennas on the screen.

This is pretty close, Bob. There are actually four antenna controls on the K4:

  ANT (tap)Selects the transmit antenna (if a KAT4 is installed: ANT 
1/2/3)
  REM ANT (hold)   Might be used to control a remote antenna switch, rotator, 
etc. (future)

  RX ANT (tap) Selects the main RX antenna (default: TX ANT)
  SUB ANT (hold)   Selects the sub RX antenna (default: TX ANT)

When you tap RX ANT or hold SUB ANT, you'll get a pick list of all available 
antennas for that receiver. In the case of the K4D or K4HD, you can make 
independent selections for these, because they both include the diversity 
option module (with a second ADC, second set of band-pass filters, and separate 
set of of RX antenna relays).

The default antenna for both receivers is the selected transmit antenna. This 
means the signal goes through the KAT4 ATU and its antenna switch (ANT 1, 2, 3).

The other possible receive antenna choices are:

  RX ANT 1
  RX ANT 2 (which doubles as XVTR IN)
  Either of the two KAT4 *non-transmit* antennas 

ANT 4 is reserved for use with the future VHF/UHF module. The connector could 
be UHF or N.

73,
Wayne
N6KR
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Re: [Elecraft] Trees eating wire

2019-05-26 Thread Jim Miller

Forgot to add. Slit tennis ball on a seam and insert weight. I use 22 pennies. 
Close slit with hot melt glue. 

Jim ab3cv 

On May 26, 2019, at 6:37 PM, Bill Johnson  wrote:

Jim,  I have done that.  I am going to use my bow one more time and if that has 
any glitches will try the Sherrill launcher.  Not cheap but is commercial and 
well liked.

73,
Bill
K9YEQ

https://wrj-tech.com/

-Original Message-
From: Jim Miller  
Sent: Sunday, May 26, 2019 4:05 PM
To: Bill Johnson 
Cc: Tom Boucher ; Elecraft@mailman.qth.net
Subject: Re: [Elecraft] Trees eating wire

Always let the weight drop and remove it at ground level before retrieving the 
line. Highly recommend slick line,tennis ball, and pneumatic launcher with 60 
lb spiderwire on an open faced spinning real. 

Jim ab3cv 

On May 26, 2019, at 4:36 PM, Bill Johnson  wrote:

I have had my  best success with using a bow and arrow.  I drill into the nock 
and have either a fishing pole and line attached or mount the real on the bow.  
Open real works best as it creates the least amount of drag, resistance to the 
arrow.  Do check the flight path carefully before letting the arrow loose. 

I have used a pneumatic plumbing constructed cannon, wrist rocket and other 
methods.  Those stinking weights and round objects, when they get swinging, 
wrap around the smallest objects in the trees and are a pain.  The trees at my 
place are thick, a forest. However, the arrow goes up and comes straight down.  

The issue with any of these methods is the projection path including wind 
drift.  Once I lob an arrow and it lands, I disconnect the fishing line from 
the arrow and then attach another fishing line with a fishing pole, then 
retrieve the line from the initial fishing reel.  It may seem a bit more work, 
but less danger, and nothing gets lost.  Then one can pull from the launching 
site whatever wire was to be strung.

73,
Bill
K9YEQ

https://wrj-tech.com/

-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Tom Boucher
Sent: Sunday, May 26, 2019 1:35 PM
To: Elecraft@mailman.qth.net
Subject: [Elecraft] Trees eating wire

Wayne's problem with a tree eating his wire reminds me of an incident some 
years ago when I was attempting to get an antenna halyard over a tall oak tree. 
I used some braided nylon cord with a probable breaking strain of several 
hundred pounds, which was attached to a drilled golf ball.

My catapult put the ball and cord over a branch somewhat lower than intended so 
I attempted to pull it back. Of course the inevitable happened and the ball 
wound itself around the branch. No matter how hard I pulled the cord it 
wouldn't come. So I wound the cord around a piece of wood and with my heels dug 
into the ground, gave it my full body weight plus some.

Finally it released itself and the golf ball shot towards me hitting me in the 
right foot and breaking several bones. I had literally shot myself in the foot! 
I'm just thankful it wasn't 2 or 3 feet up otherwise my voice would now be an 
octave or so higher.

Heard the guys sniggering behind the curtain in the hospital A department 
after I told them I had shot myself with a golf ball. XYL not at all impressed 
at having to drive me to the salt mine for 6 weeks.

Lead weights used by anglers could be even more lethal.

Needless to say I don't use that method any more and now use a compressed air 
device with weighted tennis balls which works a treat!

73,
Tom G3OLB
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Re: [Elecraft] Trees eating wire

2019-05-26 Thread Jim Miller

Always let the weight drop and remove it at ground level before retrieving the 
line. Highly recommend slick line,tennis ball, and pneumatic launcher with 60 
lb spiderwire on an open faced spinning real. 

Jim ab3cv 

On May 26, 2019, at 4:36 PM, Bill Johnson  wrote:

I have had my  best success with using a bow and arrow.  I drill into the nock 
and have either a fishing pole and line attached or mount the real on the bow.  
Open real works best as it creates the least amount of drag, resistance to the 
arrow.  Do check the flight path carefully before letting the arrow loose. 

I have used a pneumatic plumbing constructed cannon, wrist rocket and other 
methods.  Those stinking weights and round objects, when they get swinging, 
wrap around the smallest objects in the trees and are a pain.  The trees at my 
place are thick, a forest. However, the arrow goes up and comes straight down.  

The issue with any of these methods is the projection path including wind 
drift.  Once I lob an arrow and it lands, I disconnect the fishing line from 
the arrow and then attach another fishing line with a fishing pole, then 
retrieve the line from the initial fishing reel.  It may seem a bit more work, 
but less danger, and nothing gets lost.  Then one can pull from the launching 
site whatever wire was to be strung.

73,
Bill
K9YEQ

https://wrj-tech.com/

-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Tom Boucher
Sent: Sunday, May 26, 2019 1:35 PM
To: Elecraft@mailman.qth.net
Subject: [Elecraft] Trees eating wire

Wayne's problem with a tree eating his wire reminds me of an incident some 
years ago when I was attempting to get an antenna halyard over a tall oak tree. 
I used some braided nylon cord with a probable breaking strain of several 
hundred pounds, which was attached to a drilled golf ball.

My catapult put the ball and cord over a branch somewhat lower than intended so 
I attempted to pull it back. Of course the inevitable happened and the ball 
wound itself around the branch. No matter how hard I pulled the cord it 
wouldn't come. So I wound the cord around a piece of wood and with my heels dug 
into the ground, gave it my full body weight plus some.

Finally it released itself and the golf ball shot towards me hitting me in the 
right foot and breaking several bones. I had literally shot myself in the foot! 
I'm just thankful it wasn't 2 or 3 feet up otherwise my voice would now be an 
octave or so higher.

Heard the guys sniggering behind the curtain in the hospital A department 
after I told them I had shot myself with a golf ball. XYL not at all impressed 
at having to drive me to the salt mine for 6 weeks.

Lead weights used by anglers could be even more lethal.

Needless to say I don't use that method any more and now use a compressed air 
device with weighted tennis balls which works a treat!

73,
Tom G3OLB
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Re: [Elecraft] K4HD switchable?

2019-05-23 Thread Jim Miller

Nice!

Thanks!

Jim ab3cv 

On May 23, 2019, at 12:17 PM, Wayne Burdick  wrote:


> On May 23, 2019, at 8:24 AM, Jim Miller  wrote:
> 
> Can the superhet option be switched in/out independently for each of the K4D 
> receivers?

In theory.


> 
> For example it might be nice to run a full band skimmer on one receiver (so 
> no superhet) while still needing the strong signal performance on another 
> receiver (with superhet). 

Even when the superhet module is in use, the panadapter(s) will still be in 
direct-sampling mode. The resulting I/Q stream could be used for this purpose.

Wayne
N6KR


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[Elecraft] K4HD switchable?

2019-05-23 Thread Jim Miller

Can the superhet option be switched in/out independently for each of the K4D 
receivers?

For example it might be nice to run a full band skimmer on one receiver (so no 
superhet) while still needing the strong signal performance on another receiver 
(with superhet). 

Jim ab3cv 


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Re: [Elecraft] K4 bandpass filters?

2019-05-20 Thread Jim Miller

Hi Wayne

Could you respond to my other questions on bandpass filters?

Thanks

Jim ab3cv 

On May 20, 2019, at 7:00 AM, Wayne Burdick  wrote:


> Nr4c  wrote:
> 
> The K4D has s second ADC and therefore must have the band pass filters 
> identical to the existing ADC use for the main two receivers in the base K4. 

Indeed it does. 

Wayne
N6KR


> 
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[Elecraft] K4 630m and 2200m TX?

2019-05-19 Thread Jim Miller

What is expected power out of the K4 on these bands?

Jim ab3cv 
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[Elecraft] K4 bandpass filters?

2019-05-19 Thread Jim Miller

Eric mentions bandpass filters in his interview and the description of the K4D 
mentions a second set of those. 

I wonder how those are configured?
Are they always active? 
Do they permit general coverage operation?

Jim ab3cv 
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[Elecraft] KPA1500 PF keys?

2019-04-22 Thread Jim Miller

Anyone find some good use for PF1 and PF2?

I'm thinking of putting the KPA1500 RF deck and PSU out of arms reach but
still in the shack to reduce their noise impact. I'll use the KPA1500
Utility if I decide that works for me.

If it doesn't make a real difference in noise I'll just revert to "normal".

Thanks

jim ab3cv
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[Elecraft] 630m xvtr support?

2019-04-12 Thread Jim Miller

Has the support for a 630m xvtr band via other than Test mode made it nearer 
the top of the list for the K3s?

Presumably this would have an IF of zero and be able to use the DIGOUT0, LP 
setting and the XVTR IN/OUT jacks. 

Thanks

Jim ab3cv 


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[Elecraft] SDR on K3 IF to look for RFI

2019-04-01 Thread Jim Miller

Now that 160 season is almost over and my antenna farm is doing good I'm
going to start chasing RFI at my new QTH.

I plan to use my RSP2Pro with HDSDR to do some time lapse recording to see
when things come and go as a first step.

To do this I plan to use my existing antennas and I'd like to avoid
connecting and disconnecting my rig as much as possible.

So I'd like to use the IF port of the K3s. That's currently passed to the
P3 and I thought I could use its IF output to drive the SDR.

That would allow me to leave it connected all the time even while using the
K3 for normal use.

How wide is the bandwidth of that port? Is it limited to the 200Khz the P3
presents?

Thanks

Jim ab3cv
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Re: [Elecraft] The case against touch screens

2019-03-24 Thread Jim Miller

Not in love with the one in my 2018 Camry. Very difficult to use while
driving.

I'm getting better at using voice as a result.

jim ab3cv


On Sun, Mar 24, 2019 at 9:52 PM W2xj  wrote:

> Old news. They have existed for a while.
>
> Sent from my iPad
>
> > On Mar 24, 2019, at 9:43 PM, Dave Cole (NK7Z)  wrote:
> >
> > I suspect touch screens are just a fad for rigs...  Imagine one in your
> moving car...
> >
> > 73s and thanks,
> > Dave (NK7Z)
> > https://www.nk7z.net
> > ARRL Technical Specialist
> > ARRL Volunteer Examiner
> > ARRL OOC for Oregon
> >
> >> On 3/24/19 5:35 PM, Al Lorona wrote:
> >> Thaddeus sits down at the rig. Today is the day Bouvet is supposed to
> come on the air, and thousands of hams around the world must be tuning
> around at this moment trying to be the first to work the DXpedition.
> >> He gets a feeling and tunes low in the band, turning the knob as if he
> were breaking into a safe. His intuition pays off: he hears a weak signal
> tuning up, and then... a callsign. It's Bouvet! Instant rush. Instant
> clammy hands. He reaches to tap the Split button on his fancy new rig's
> touch screen. He taps again. The screen does nothing. Oh no, not now, touch
> screen. Please recognize my finger... please! Bouvet turns it over, but
> nobody has heard them yet, so Bouvet calls again, and while Thaddeus is
> tapping frantically, time slows down, four seconds feel like four hours,
> and still the dim-witted screen does nothing as Thaddeus begins all the
> usual finger gymnastics that people do when they're trying to make their
> device understand that they in fact want it to do something. The radio sits
> there stupidly, the DX stops calling, and then the pileup mayhem begins.
> Thaddeus sits there, stupefied, wondering why those

Re: [Elecraft] KPA-1500 tuner question

2019-02-21 Thread Jim Miller

Things to check

Could be bad aux cable. Is it from Elecraft?

Do you have anything else connected to aux?

Are you sure connectors are fully engaged?

On Feb 21, 2019, at 10:21 AM, Walter J. Legowski  wrote:

I experienced the same thing, especially on 20M.  The tuner is apparently 
ignoring some of the signals on the AUXBUS line.  I put a scope on that line.  
I can see, some of the time, the amplifier responding to the signal with a 
"clunk" as the tuner relays adjust to the new segment.  The rest of the time, I 
see the signal, but no response from the amp.  If you attempt to transmit when 
the signal is ignored, you get chattering relays followed by "ATU Retune 
Complete" on the amp display.  I took a photo of the signal trace and sent it 
to Support yesterday.  They haven't gotten back to me yet.

Walt, WA1KKM


> On 2/21/19 3:36 AM, Peter Dougherty wrote:
> Hi all,
> Something I noticed this past weekend in the contest about the KPA1500,
> especially on 80 and 160, where the internal tuner was needed on antennas
> that were above ~1.5:1 SWR. When I changed frequencies into a range that
> required retuning, I had to manually press the ATU control and initiate a
> tune sequence, or else when I was auto-sending CW my call would get cut off
> as the tuner set its needed values.
> Since I'd memorized the entire band(s) ahead of time, is there a way for the
> memorized tuning solutions to load on QSY, rather than on RF application? It
> really slowed me down as I was S my way through the low bands on Friday
> night.
>  -
> 73 and Good DX
> Peter, W2IRT
> President, North Jersey DX Association
> DXCC Card Checker
> Letter O Manager, ARRL Incoming 2nd District QSL bureau
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Re: [Elecraft] KPA-1500 tuner question

2019-02-20 Thread Jim Miller

With updated firmware and an aux cable this should be happening. 

Jim ab3cv 

On Feb 20, 2019, at 10:42 PM, Nr4c  wrote:

Put the ATU in Man mode. 

Sent from my iPhone
...nr4c. bill


> On Feb 20, 2019, at 10:36 PM, Peter Dougherty  wrote:
> 
> Hi all,
> Something I noticed this past weekend in the contest about the KPA1500,
> especially on 80 and 160, where the internal tuner was needed on antennas
> that were above ~1.5:1 SWR. When I changed frequencies into a range that
> required retuning, I had to manually press the ATU control and initiate a
> tune sequence, or else when I was auto-sending CW my call would get cut off
> as the tuner set its needed values.
> 
> Since I'd memorized the entire band(s) ahead of time, is there a way for the
> memorized tuning solutions to load on QSY, rather than on RF application? It
> really slowed me down as I was S my way through the low bands on Friday
> night.
> 
> 
> 
> -
> 73 and Good DX
> Peter, W2IRT
> 
> 
> 
> President, North Jersey DX Association
> 
> DXCC Card Checker
> Letter O Manager, ARRL Incoming 2nd District QSL bureau
> 
> 
> 
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Re: [Elecraft] KPA-1500 failed!

2019-02-16 Thread Jim Miller

Google DIN 4.3/10.

https://blog.pasternack.com/rf-components/coaxial-connectors/what-is-so-special-about-the-4-3-10-coaxial-connector/

jim ab3cv

On Sat, Feb 16, 2019 at 7:09 PM Gary K9GS  wrote:

> That's about the silliest thing I've ever heard.Really, DIN connectors on
> a radio?73,Gary K9GS
>  Original message From: John Stengrevics <
> jstengrev...@comcast.net> Date: 2/16/19  2:55 PM  (GMT-06:00) To:
> j...@audiosystemsgroup.com Cc: elecraft@mailman.qth.net Subject: Re:
> [Elecraft] KPA-1500 failed! Who uses PL-259s?  They suck.  I ordered my K3S
> with Ns and really should have specified DINs.  But, that is a retrofit
> project for another day.JohnWA1EAZ> On Feb 16, 2019, at 2:47 PM, Jim Brown <
> j...@audiosystemsgroup.com> wrote:> > On 2/16/2019 9:39 AM, Bob McGraw
> K4TAX wrote:>> Do not trust PL-259 connectors installed only "finger
> tight". Today many of those PL-259 connectors "look good" but are really
> poor quality connectors.> > If you live in North America, the ONLY good
> PL-259 connector is one that labeled Amphenol 83-1SP.  Most others are
> JUNK.  I'm told there are some other decent brands sold in EU.> >> ALWAYS
> snug the PL-259's with a pair of 4" channel lock pliers.> > RIGHT. And
> always be VERY careful about how you solder them, especially the shield.> >
> 73, Jim K9YC> >
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Re: [Elecraft] Can anyone share a picture K3 with KPA1500

2019-02-11 Thread Jim Miller

March QST page 47. Review.  73, Jim KG0KP

-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of K2bew
Sent: Sunday, February 10, 2019 8:41 PM
To: Bill Rowlett
Cc: Elecraft Mail List; hs0...@gmail.com
Subject: Re: [Elecraft] Can anyone share a picture K3 with KPA1500

QST February 2019 Page 21 - Click this to read https://goo.gl/QpCjVp


On Sun, Feb 10, 2019, 9:40 AM Bill Rowlett  Page 19 of the February QST.
>
> Bill  KC4IM
>
>
> > On Feb 10, 2019, at 3:00 AM, Martin Sole  wrote:
> >
> > I have not seen, and google did not reveal a picture of a K3 with a
> KPA1500 alongside. Plenty of the KPA500 with a K3 but none of the 1500. I
> would like to see the amp and radio side by side both with the tilt bail
> raised and lowered. Anyone have a picture they could share, or maybe a QRZ
> page with them on?
> >
> > Thanks
> >
> > Martin, HS0ZED
> >
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Re: [Elecraft] [KX3] Urban stealth HF: Inside-the-backpack loop antenna?

2019-01-23 Thread Jim Miller

I assume that this "backpack frame antenna" wouldn't be actually used when
being worn. The circulating currents in a Hi-Q loop result in strong RF
fields along the loop axis which should be avoided in use.

jim ab3cv

On Wed, Jan 23, 2019 at 11:21 AM Wayne Burdick  wrote:

> Wish I had time to build one of these myself! A few other things in the
> queue
>
> Wayne
> N6KR
>
>
> > On Jan 23, 2019, at 6:32 AM, 'Dale Parfitt' pari...@frontier.com [KX3] <
> kx3-nore...@yahoogroups.com> wrote:
> >
> >
> > HI Wolf,
> >
> > VK3YE could have done so much better from an efficiency standpoint
> without making the loop any larger.
> >
> > 1. Flat metal stock is not as efficient as round stock (of the same
> circumference) because current crowding at the edges of the rectangular
> stock makes it appear smaller in surface area.
> >
> > 2. A much lower D capacitor such as a dual gang air variable with the
> gangs in series (to avoid resistive losses in the bearings) or  a butterfly
> would also have aided in  higher efficiency.
> >
> > 3. Copper would have helped efficiency  somewhat with its lower RF
> resistance and ability to be soldered  versus mechanical connections, but
> that is partially offset by aluminum’s larger skin depth. Of course copper
> is heavier and more expensive, but in tube form the weight issue could be
> minimized..
> >
> >
> >
> > Just some thoughts. Again, the VK1OD calculator allows one to make
> precise efficiency measurements so even small improvements can be
> measured.  As an example, the difference in efficiency between using
> braided coax as the loop radiator versus hardline or copper tubing is
> readily apparent. For the same diameter loop and same conductor diameter, a
> narrower bandwidth  means higher efficiency.
> >
> >
> >
> > Dale W4OP
> >
> >
> >
> > From: k...@yahoogroups.com [mailto:k...@yahoogroups.com] On Behalf Of
> 'Wolf Hoeller, OE7FTJ' wolf.oe7...@gmail..com [KX3]
> > Sent: Wednesday, January 23, 2019 4:57 AM
> > To: k...@yahoogroups.com
> > Subject: Fwd: [KX3] Urban stealth HF: Inside-the-backpack loop antenna?
> >
> >
> >
> >
> >
> > Wayne,
> >
> >
> >
> > a really good idea.
> >
> > Have a look at VK3YE's youtube channel for his experiment to put a loop
> antenna in (frame of) a notebook bag.
> https://www.youtube.com/watch?v=BC5lFbLqaeg
> >
> >
> >
> > Another good idea for a stealth antenna has the spain company Inac. Here
> is the suitcase with a loop inside the frame:
> https://www.inac-radio.com/MAK721PRO
> >
> >
> >
> > I would like the idea, to sit in an urban park with my backpack or
> similar on my knees and make some contacts.
> >
> >
> >
> >
> > Wolf, OE7FTJ
> >
> > Emergency Communications via Winlink Global Radio Email ®️
> >
> >
> >
> >
> >
> >
> >
> > Am Di., 22. Jan. 2019 um 21:57 Uhr schrieb Wayne Burdick
> n...@elecraft.com [KX3] :
> >
> >>
> >>
> >> I’ve engaged in plenty of ultralight HF pack operation, with a KX2, AX1
> antenna and a dragged counterpoise. In wide open spaces it’s a blast. But
> urban settings with dogs, wire-eating cacti and overzealous Neighborhood
> Watchers can distract from one’s radio experience.
> >>
> >>
> >>
> >> So, just for grins, I’d like to try something completely incognerdo: no
> visible antenna. A small remotely tuned loop (say 12” diameter) would seem
> to be the best choice, as it would fit entirely inside a small backpack. It
> could have  modest efficiency while not requiring a counterpoise wire.
> Rigid 1” copper pipe formed in a square would be convenient to deploy.
> >>
> >>
> >>
> >> The loop would be only 6 to 8” from soft tissue, so you’d want to run
> QRP, of course.  OTOH, we’re talking about HF. A cellphone by your ear is
> probably worse.
> >>
> >>
> >>
> >> Any other antenna suggestions?
> >>
> >>
> >>
> >> Wayne
> >>
> >> N6KR
> >>
> >>
> >>
> >>
> >>
> >
> >
> > __._,_.___
> > Posted by: "Dale Parfitt" 
> > Reply via web post•   Reply to sender •   Reply to
> group  •   Start a New Topic   •   Messages in this topic (2)
> >
> > Have you tried the highest rated email app?
> > With 4.5 stars in iTunes, the Yahoo Mail app is the highest rated email
> app on the market. What are you waiting for? Now you can access all your
> inboxes (Gmail, Outlook, AOL and more) in one place. Never delete an email
> again with 1000GB of free cloud storage.
> > VISIT YOUR GROUP
> > • Privacy • Unsubscribe • Terms of Use
> >
> > SPONSORED LINKS
> >
> >
> >
> > .
> >
> >
> > __,_._,___
>
> __
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Re: [Elecraft] K3s audio question

2018-10-24 Thread Jim Miller

skype is basically half duplex with vox. any thing that happens locally
that triggers the vox will cause receive cut outs.

the cure is to mute the mike whenever you're done talking. treat the mute
button like PTT and you'll have better luck.

jim ab3cv


On Wed, Oct 24, 2018 at 7:51 PM  wrote:

> It sure does sound like a Skype issue.
> At work we use Skype and Cisco Webex for remote video display of meetings.
> In either app if you touch any button on the hardware or software IP
> phones, even to mute them, the software will mute the presentation.
>
> Is the K3s set to beep on button presses?
>
>
> R. Kevin StoverAC0H
>
> ARRL, FISTS, SKCC, NAQCC.
> “If it doesn’t work the first time you push the button it won’t work the
> 20th…Just stop.”
>
> -Original Message-
> From: elecraft-boun...@mailman.qth.net 
> On Behalf Of tomb18
> Sent: Wednesday, October 24, 2018 3:55 PM
> To: KE8G ; Elecraft 
> Subject: Re: [Elecraft] K3s audio question
>
> HiOne thing I just thought of  is that perhaps Skype is muting the sound
> when you hit a key. Try to set the mic input on mute and see what
> happens.73 Tom
>
> Sent from my Samsung Galaxy smartphone.
>  Original message From: KE8G  Date:
> 2018-10-24  4:43 PM  (GMT-05:00) To: Elecraft 
> Subject: [Elecraft] K3s audio question Hi All, I apologize in advance, as
> this is going to be a long post.  I will try to include all the relevant
> information, so not many questions are left unanswered.
>
> I recently bought a K3s and got rid of my K3 rigs.  The K3s is located at
> my Ohio QTH (remote radio) and hooked up properly to the PC, which is Win7
> 64 bit, running the latest OS updates.
>
> To operate remotely, while in Texas, I use all software, no RemoteRig.
> The software I use for radio control is Win4Ksuite (I have been
> corresponding with Tom and he suggested I ask this group), N1MM for
> contesting and logging.  I run com0com to allow the virtual comports to run
> both Win4K3suite and N1MM simultaneously.  I run 2 instances (with different
> Id's) of Skype, so I have audio and can see my P3 via webcam.  Included
> hardware is a Winkeyer.  The K3s and Winkeyer are properly configured in
> N1MM.  This setup has worked flawlessly for several years.
>
> *The only difference is I went from a K3 to a K3s... no other changes.*
>
> The K3s came with firmware version 5.62.  When I used the remote setup
> last time (in August 2018) it worked perfectly.  The K3 then, had version
> 5.60.
> I have updated the K3s with firmware version 5.60 and still experience the
> issue.
>
> The ISSUE... whenever I hit a key on the control station keyboard, makes
> no difference which key, the audio will "mute" for a couple of characters,
> then pop back on strong.  It makes no difference if I have Win4K3suite &
> N1MM running, just Win4K3suite running or nothing other than Skype and the
> radio on, the moment I hit a key, the audio is muted momentarily!
>
> Any suggestions on a remedy would be greatly appreciated.
>
> 73 de Jim - KE8G
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Re: [Elecraft] K3s+KPA500 SSB audio distortion

2018-08-01 Thread Jim Miller

I ran my KPA500 for several years at 500w and often received unsolicited “great 
audio” reports. CM500 was my headset. 

Something is wrong with your setup. 

Jim ab3cv (have kpa1500 now)

On Aug 1, 2018, at 11:09 AM, Ignacy  wrote:

Could it be RF feedback? You can check it by transmitting into a dummy load
or lowering the drive power.
Ignacy, NO9E  



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Re: [Elecraft] Subreceiver Installation Suggestions

2018-07-05 Thread Jim Miller

Take a run at what u want in main and sub for filters as the sub will need to 
be removed for any changes afterwards. 

73
Jim ab3cv 

On Jul 5, 2018, at 12:56 PM, Grant Youngman  wrote:

Unless you have a specific application, I’d just use the default antenna 
routing configuration.

And be careful when you drop it in. I’ve had my sub-receiver box in and out 
quite a few times over the years for one reason or another.  Not long ago I 
discovered it wasn’t working (?).  Dead as a doorknob.  Discovered that when I 
put it in the connector block on the side nearest the front of the radio I had 
pinched a coax cable, and pulled it out of its socket.  Never saw it … dumb as 
a brick ;-)

It’s also not a bad idea (not sure if it’s in the instructions or not) to 
remove the left side panel (looking at the radio from the front) so you can see 
the rear connector.  It makes it a bit easier to see the pins and get them 
properly lined up and seated.

Grant NQ5T
K3 #2091, KX3 #8342

> On Jul 5, 2018, at 12:21 PM, Lee Murrah via Elecraft 
>  wrote:
> 
> I recently purchased the subreceiver for the K3S.  Before I install it, it 
> there anything I should know or think about?  I think there is a choice of 
> antennas. Is there anything else I should do now that would be harder to do 
> after the installation?
> 

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Re: [Elecraft] Low Voltage Band Data Output

2018-07-04 Thread Jim Miller

The open collector outputs is
F the K3 or K3s are lightly pulled up then fed thru a series resistor. Your 
decode must have adequate buffering in place to avoid drawing excessive 
current. A cmos buffer chip will do the trick. 

73

Jim ab3cv (got the t shirt)

On Jul 4, 2018, at 11:55 AM, William Liporace  wrote:

Hi Folks,
I thought it was me, but I guess not... When I hook up a cable to the ACC plug 
for band data output, I get about 4.8v (slightly less than 5v). When I hook up 
the radio to any antenna switch that has band data input, the voltage goes down 
to 3v. This is not enough to drive the antenna switches.  This is a new KIO3B 
board, so is it a bad board? Is there something else not set right that I am 
missing?? I didn't anything in the manuals..

TNX Will WC2L

-- 
William Liporace WC2L
http://www.wc2l.com or http://dxc.wc2l.com
AR-Cluster Node  telnet dxc.wc2l.com or 144.93 MHz
w...@wc2l.com

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Re: [Elecraft] Proposed: more 6 meter CW beacons

2018-07-01 Thread Jim Miller

http://www.hanssummers.com/

73

jim ab3cv

On Sun, Jul 1, 2018 at 11:34 AM Walter Underwood 
wrote:

> Hmm, sounds like a good idea for a kit…
>
> wunder
> K6WRU
> Walter Underwood
> CM87wj
> http://observer.wunderwood.org/ (my blog)
>
> > On Jul 1, 2018, at 7:32 AM, Wayne Burdick  wrote:
> >
> > When 6 meters opens up, a few low-power CW beacons I’ve never heard
> always pop up in the low end of the band. We could use a lot more of these
> during sporadic-E seasons. If you have a 6-meter-capable QRP rig gathering
> dust and an antenna to put it on, you might consider joining in. In
> addition to giving us a few more data points on propagation, it’s a novel
> way of promoting CW use.
> >
> > If you decide to put a beacon on the air, please let us know so we can
> all listen for it.
> >
> > 73,
> > Wayne
> > N6KR
> >
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Re: [Elecraft] OT (sort of, but they use all Elecraft gear): Baker Island

2018-06-27 Thread Jim Miller

forgot to mention: with my K3s/P3 (essential!) and my KPA1500!

jim ab3cv

On Wed, Jun 27, 2018 at 7:21 AM Jim Miller  wrote:

> I worked them on 40cw a few minutes ago.
>
> ATNO!
>
> Good luck!
>
> jim ab3cv
>
> On Wed, Jun 27, 2018 at 7:20 AM ab2tc  wrote:
>
>> Hi all Elecraft DXers,
>>
>> What happened to the Baker Island DXpedition? They were supposed to be QRV
>> today, but their latest news update on the website was June 4.
>>
>> AB2TC - Knut
>>
>>
>>
>> --
>> Sent from: http://elecraft.365791.n2.nabble.com/
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Re: [Elecraft] OT (sort of, but they use all Elecraft gear): Baker Island

2018-06-27 Thread Jim Miller

I worked them on 40cw a few minutes ago.

ATNO!

Good luck!

jim ab3cv

On Wed, Jun 27, 2018 at 7:20 AM ab2tc  wrote:

> Hi all Elecraft DXers,
>
> What happened to the Baker Island DXpedition? They were supposed to be QRV
> today, but their latest news update on the website was June 4.
>
> AB2TC - Knut
>
>
>
> --
> Sent from: http://elecraft.365791.n2.nabble.com/
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Re: [Elecraft] K3S HI SIGNAL

2018-06-25 Thread Jim Miller

Note that Frank's reply was to a FD (W3AO) setup question.

Frank's W3LPL station has a much different matrix of antennas.

73
jim ab3cv

On Mon, Jun 25, 2018 at 2:31 PM  wrote:

> Hi John,
>
>
> No, they are all pointed in exactly the same direction.
>
>
>
> To eliminate all interference between multiple K3 transceivers
> operating in the same band, all W3AO HF antennas are deployed in
> a 10 00 foot long straight line running north-south with all of our
> 3 element HF Yagis and 2 element 40 meter Yagis pointed west.
> All of our dipoles are broadside east-west.
>
>
> There's no trace of interference among any of the K3 transceivers
>
>
> 73
> Frank
> W3LPL
>
> - Original Message -
>
> From: j...@kk9a.com
> To: elecraft@mailman.qth.net
> Sent: Monday, June 25, 2018 5:34:37 PM
> Subject: [Elecraft] K3S HI SIGNAL
>
> What does tip to tip mean - pointing 90 degrees apart?
>
> Don't you use verticals for your mult stations at W3LPL to minimize in
> band interference? How far are they from the Yagis?
>
> John KK9A
>
>
> Frank Donovanf W3LPL wrote:
>
> We routinely operate three or more K3 transceivers on the same band
> at W3AO, four on the band our GOTA station is operating. Not only
> is there no damage to the K3s and no HI SIG warnings, we don't hear
> any cross-station interference at all!
>
>
> The trick is to use horizontally polarized antennas installed tip-to-tip
> with at least 100 feet of spacing between each other.
>
>
> 73
> Frank
> W3LPL
>
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[Elecraft] TX Sample level on KPA1500?

2018-05-28 Thread Jim Miller

I've seen no documentation on this output. I assume it is a tap on the PA
output before the ATU.

Does anyone know the expected level here? Is is 30 or 40db or more down
from the PA out?

Is the attenuated level flat with frequency?

tnx
jim ab3cv
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Re: [Elecraft] New wierd K3s behavior

2018-05-23 Thread Jim Miller

That's it!

Have you reported this to Wayne?

jim ab3cv

On Wed, May 23, 2018 at 12:00 AM, Michael Eberle <mtebe...@mchsi.com> wrote:

> Mine does this on 6 meters if SPLIT is enabled. Turning SPLIT off and then
> pressing TUNE it will put out power.  Turn SPLIT back on and TUNE will put
> out full power until the next power cycle of the radio.  Strangely, it only
> happens on 6 meters.
>
> I posted about it here before and was told it was probably an issue with
> WSJT-X which doesn't make sense because the radio behaves this way without
> WSJT-X even running on my computer.  I don't know how WSJT-X could change
> the K3 firmware.
>
> Mike - KI0HA
>
>
> On 5/22/2018 07:11, Jim Miller wrote:
>
>> When I turn on my K3s (and let it finish booting) and try pressing TUNE
>> (hold XMIT) I get a zero power indication rather than tune power if in
>> DATA
>> A mode.
>>
>> A quick trip to CW then hitting a few dits on the paddle produces the
>> expected 100w barefoot power.
>>
>> Then returning to DATA A and TUNE and the expected tune power is emitted.
>>
>> No idea why this would occur and it is a new thing. I have recently
>> updated
>> to the latest beta firmware for the enhanced KPA1500 integration. Perhaps
>> a
>> bug was introduced there?
>>
>> Ideas?
>>
>> Jim ab3cv
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Re: [Elecraft] New wierd K3s behavior

2018-05-22 Thread Jim Miller

never mind...

operator error

On Tue, May 22, 2018 at 8:11 AM, Jim Miller <j...@jtmiller.com> wrote:

> When I turn on my K3s (and let it finish booting) and try pressing TUNE
> (hold XMIT) I get a zero power indication rather than tune power if in DATA
> A mode.
>
> A quick trip to CW then hitting a few dits on the paddle produces the
> expected 100w barefoot power.
>
> Then returning to DATA A and TUNE and the expected tune power is emitted.
>
> No idea why this would occur and it is a new thing. I have recently
> updated to the latest beta firmware for the enhanced KPA1500 integration.
> Perhaps a bug was introduced there?
>
> Ideas?
>
> Jim ab3cv
>
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Re: [Elecraft] New wierd K3s behavior

2018-05-22 Thread Jim Miller

weird...not wierd...

not enuf coffee...

jim

On Tue, May 22, 2018 at 8:11 AM, Jim Miller <j...@jtmiller.com> wrote:

> When I turn on my K3s (and let it finish booting) and try pressing TUNE
> (hold XMIT) I get a zero power indication rather than tune power if in DATA
> A mode.
>
> A quick trip to CW then hitting a few dits on the paddle produces the
> expected 100w barefoot power.
>
> Then returning to DATA A and TUNE and the expected tune power is emitted.
>
> No idea why this would occur and it is a new thing. I have recently
> updated to the latest beta firmware for the enhanced KPA1500 integration.
> Perhaps a bug was introduced there?
>
> Ideas?
>
> Jim ab3cv
>
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[Elecraft] New wierd K3s behavior

2018-05-22 Thread Jim Miller

When I turn on my K3s (and let it finish booting) and try pressing TUNE
(hold XMIT) I get a zero power indication rather than tune power if in DATA
A mode.

A quick trip to CW then hitting a few dits on the paddle produces the
expected 100w barefoot power.

Then returning to DATA A and TUNE and the expected tune power is emitted.

No idea why this would occur and it is a new thing. I have recently updated
to the latest beta firmware for the enhanced KPA1500 integration. Perhaps a
bug was introduced there?

Ideas?

Jim ab3cv
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Re: [Elecraft] Kpa1500 PSU orientation?

2018-04-04 Thread Jim Miller

I just decided to lay it flat for now. Still plenty of foot room under the
desk.

73

jim ab3cv

On Wed, Apr 4, 2018 at 5:26 PM, Torrey Mitchell <torr...@q.com> wrote:

> After discussing it with Elecraft, I keep my KPA-1500 PS front panel down.
> I place a small book between the front panel and the floor of my shack.
> This prevents any pressure on the three green lights protruding a little
> from the panel.  This configuration allows full ventilation access and
> facilitates routing the cables to the amplifier (they face upwards to the
> amp).  Also allows easy access to the PS ON/OF switch.
>
> Best 73 Torrey N9PY (amp #52)
>
> -Original Message-
> From: elecraft-boun...@mailman.qth.net <elecraft-boun...@mailman.qth.net>
> On
> Behalf Of Jim Miller
> Sent: April 4, 2018 12:54
> To: Elecraft@mailman.qth.net
> Subject: [Elecraft] Kpa1500 PSU orientation?
>
> I keep the KPA1500 PSU on its side feet when in operation under my desk.
>
> These feet are pretty thin. Should I put additional spacer boards beneath
> them to create more depth for airflow?
>
> 73
>
> Jim AB3CV
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[Elecraft] Kpa1500 PSU orientation?

2018-04-04 Thread Jim Miller

I keep the KPA1500 PSU on its side feet when in operation under my desk. 

These feet are pretty thin. Should I put additional spacer boards beneath them 
to create more depth for airflow?

73

Jim AB3CV 
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Re: [Elecraft] KPA1500 #39 in operation!

2018-03-27 Thread Jim Miller

Chalk up two JA contacts via 6M EME to the KPA1500#39!! JG1TSG and JG2BRI
gave me good signal reports and completed with me. JA7QVI and I ran out of
moon before completion. KPA1500 handled the full power 47 second key down
cycles with no problem.

Earlier in the day UR0MC, S59A and G8BCG gave me good signal reports but I
was unable to hear any of them through the noise in that direction.

Just a 6M7 with azimuth only here up 65ft and buried in the oak forest
behind my house.

73

jim ab3cv

On Sat, Mar 24, 2018 at 1:51 PM, Jim Miller <jtmille...@gmail.com> wrote:

> Checks out full power all bands!
>
> Bring on the DX!!
>
> 73
>
> Jim ab3cv
>
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[Elecraft] KPA1500 #39 in operation!

2018-03-24 Thread Jim Miller

Checks out full power all bands!

Bring on the DX!!

73

Jim ab3cv
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Re: [Elecraft] KPOD Beep?

2018-03-21 Thread Jim Miller

My room is quiet and I do hear them. The F1 trick at power on does the job.

Thanks!

Jim

On Wed, Mar 21, 2018 at 1:13 PM, Ken K6MR <k...@outlook.com> wrote:

> The beeps are not very loud, and fairly high pitched.  I don’t bother
> shutting them off because I never operate on a speaker and don’t notice
> them. But if your high frequency hearing is pretty good you might notice
> the beeps in a quiet room.
>
> Ken K6MR
>
> From: Kenneth Moorman<mailto:n...@cox.net>
> Sent: Wednesday, March 21, 2018 09:59
> To: 'Elecraft Reflector'<mailto:elecraft@mailman.qth.net>
> Subject: Re: [Elecraft] KPOD Beep?
>
> How loud are these beeps?  I can barely hear mine and only if I put my ear
> directly above the KPod front panel.  I suspect I have a defective sound
> device and am not that hard of hearing.
>
> Ken, NU4I
>
> -Original Message-
> From: elecraft-boun...@mailman.qth.net
> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Ken K6MR
> Sent: Wednesday, March 21, 2018 12:07 PM
> To: Jim Miller <j...@jtmiller.com>; Elecraft Reflector
> <elecraft@mailman.qth.net>
> Subject: Re: [Elecraft] KPOD Beep?
>
> Hold  F1 during power up.  It will revert to beeping at the next power up
> so
> you need to do this each time it is power cycled.
>
>
>
> Ken K6MR
>
>
>
> 
> From: elecraft-boun...@mailman.qth.net <elecraft-boun...@mailman.qth.net>
> on
> behalf of Jim Miller <j...@jtmiller.com>
> Sent: Wednesday, March 21, 2018 6:18:49 AM
> To: Elecraft Reflector
> Subject: [Elecraft] KPOD Beep?
>
> Is there anyway to kill the beep that the KPOD creates when a button is
> pressed?
>
> Couldn't find anything in the manual.
>
> 73
>
> jim ab3cv
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[Elecraft] KPOD Beep?

2018-03-21 Thread Jim Miller

Is there anyway to kill the beep that the KPOD creates when a button is
pressed?

Couldn't find anything in the manual.

73

jim ab3cv
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[Elecraft] KPOD: how to turn off beep on button press?

2018-03-18 Thread Jim Miller

How do I stop the KPOD from beeping each time a button is pressed?

Thanks

Jim ab3cv
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Re: [Elecraft] Dish/Direct TV RFI?

2018-03-14 Thread Jim Miller

Satellite will give tv but what about internet upload download speeds latency 
and jitter?

On Mar 14, 2018, at 11:28 AM, "j...@kk9a.com"  wrote:

I have Dish and there is no interference to it when transmitting on the HF
bands.  During heavy rain storms there is occasional signal loss and I
suppose if you live in areas with a lot of snow you could have similar
issues.

John KK9A

Reed w4jz wrote:
Wed Mar 14 08:56:34 EDT 2018

Has anyone had trouble with RFI, receive or transmit, with Dish or
Direct TV.  I have cable through Comcast & tired of their rate increases
so thought I give satellite a try since looks like more bang for the buck.

Thanks,

Reed  W4JZ

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Re: [Elecraft] Y-Adapter for K3S ACC - KPAK3AUX - KPA-1500

2018-02-12 Thread Jim Miller

VGA Y adapters will NOT work. They don't have a completely pin to pin thru
wiring.

Just get the Elecraft unit or shop carefully.

73

jim ab3cv

On Mon, Feb 12, 2018 at 2:37 PM, Don Butler  wrote:

> Tnx John …. I guess a better option might be to just buy a VGA Y-Adapter
> rather than make one up and have to do all that soldering …
>
> Don, N5LZ
>
> Sent from Mail for Windows 10
>
> From: j...@kk9a.com
> Sent: Monday, February 12, 2018 12:16 PM
> To: elecraft@mailman.qth.net
> Subject: [Elecraft] Y-Adapter for K3S ACC - KPAK3AUX - KPA-1500
>
> Yes a Y will work.  I have had a MicroHAM keyer, a Top Ten Band Decoder
> and a KPA500 all connected to the same ACC jack.
>
> John KK9A
>
>
> Don Butler n5lz at comcast.net
> Mon Feb 12 12:31:13 EST 2018
>
> I've been studying the manual while waiting for my new KPA-1500 to ship ...
> I see that the KPAK3AUX cable must run from AUX on the amp to ACC on the
> K3S.   In my case I already have a microHAM MK2R+ cable connected to the
> K3S
> ACC  (providing band data for switching bandpass filters).
> I'm thinking that I can build a Y-Adapter cable assembly with DB-15s  to
> run
> from the K3S ACC and split (1) to KPAK3AUX and on to the KPA-1500 AUX . and
> (2) to the MK2R+ ACC cable.
>
> Will that work?
>
> Will conflicts with KPA-1500 or MK2R+ be created?
>
> Thanks,
>
> Don, N5LZ
>
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[Elecraft] KPA1500 ordered 8/24

2018-02-07 Thread Jim Miller

Early notification received 9:14pm. 

Confirmation of full paid order received 9:34pm. 

No notice received yet. 

Jim ab3cv 
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Re: [Elecraft] K3s IF bandwidth?

2017-12-25 Thread Jim Miller

Thanks all!

Jim ab3cv

On Dec 25, 2017, at 12:37 PM, tomb18 <tom...@videotron.ca> wrote:

Hi
If you connect an sdrplay to the if output you can see over  2mhz bandwidth. 
73 Tom 

Sent from my Samsung Galaxy smartphone.

 Original message 
From: Don Wilhelm <donw...@embarqmail.com>
Date: 2017-12-25 12:31 PM (GMT-05:00)
To: Jim Miller <jtmille...@gmail.com>, Elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3s IF bandwidth?

Jim,

The IF takeoff point in the K3 is right after the 8.215mHz mixer, so at 
that point, it has a very wide bandwidth.
The K3 filtering is after that IF takeoff point, so any filtering in the 
K3 will not affect that bandwidth.

I don't know how much wider than 200kHz the IF takeoff might be.
200kHz is a substantial portion of any band.

73,
Don W3FPR

On 12/25/2017 12:17 PM, Jim Miller wrote:
> The P3 displays a maximum of 200khz. Is that the maximum useful K3 IF 
> bandwidth or is it wider?
> 
> 73
> 
> Jim ab3cv
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[Elecraft] K3s IF bandwidth?

2017-12-25 Thread Jim Miller

The P3 displays a maximum of 200khz. Is that the maximum useful K3 IF bandwidth 
or is it wider?

73

Jim ab3cv 
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Re: [Elecraft] SVGA capture

2017-12-24 Thread Jim Miller

Hi George 

Tried it and it worked fine. 

73

Jim ab3cv 

On Dec 24, 2017, at 11:09 PM, M. George <m.matthew.geo...@gmail.com> wrote:

Jim, you should try the DirectShow feed with Win4K3Suite, I don't have a P3, 
but I know it supports a couple of different VGA capture devices and I'm pretty 
sure it's using a DirectShow feed.  There is a trial of Win4K3Suite, you should 
give it a try.  Then you have an integrated setup for your K3 and you won't 
need to use VLC.  It's worth a try, maybe Tom the author of Win4K3Suite will 
chime in.

Max NG7M

> On Sun, Dec 24, 2017 at 6:52 PM, Jim Miller <j...@jtmiller.com> wrote:
> A little victory here for me. Finally downloaded a new driver for my
> Startech USB3 video capture box and also a new version of VLC media player
> (free, open source, donation would be nice...)
> 
> After installing the driver I fired up VLC, opened the media menu, opened
> capture device and selected DirectShow.
> 
> P3 SVGA came up instantly in a resizable window nice and clean. I'm just
> using a NUC i5, Win10 and it's consuming about 5% CPU time which is very
> reasonable.
> 
> For extra points I modified the properties of the desktop shortcut for VLC
> putting "dshow://" after the program invocation which was already in
> quotes. Include the quotes in the dshow portion.
> 
> Clicking on the link now goes directly to showing the SVGA stream.
> 
> I'll do some further testing to see if anything weird crops up when running
> N1MM+ and sending CW, etc., but looks good so far!
> 
> woo hoo!!
> 
> 73
> 
> jim ab3cv
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-- 
M. George
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