I'm using VSPM, which K5FR provided free to hams.
http://k5fr.com/DDUtilV3wiki/index.php/VSP_Manager
It does not do port splitting if that is what you need, and it has
been a few years since I heard from him, but he was blogging as late
as last July, so it is worth a shot to contact him.
73,
I've been a member of aviation standards committees, and the quality of the
members is similar. The best engineers from multiple companies come
together, along with hundreds of years of combined experience. The battery
standards committee was across the hall from ours one time. Theirs was much
I'm thinking Red Dog Bone Capacitors like these:
https://reverb.com/item/32640625-47pf-500v-lemco-dog-bone-capacitor-marshall-jmp-jcm800
https://www.surplussales.com/CAPACITORS/RF-TEMPDOGBONE.HTML
73,
Mark
W7MLG
On Wed, Jun 22, 2022 at 7:19 AM David Christ wrote:
> A friend put a question
I would not think the software / firmware would work. The PX3 connects to
the KX3 serial port and they talk. For example, the PX3 knows what
frequency the KX3 is on. It tracks the KX3 and shows colored bars where the
VFO passbands are.
73,
Mark
W7MLG
On Mon, Feb 14, 2022 at 7:58 AM Ed G wrote:
The only way to really know for sure is to have a NIST traceable calibrated
wattmeter and have it calibrated on a regular basis. Hams are generally too
cheap to do that. The LP100 does come calibrated, so that would be my go to
reference, but I'll bet Hams will hardly ever get the calibration
, 2022 at 7:03 PM Ken K6MR wrote:
> The FPGA is a Xilinx XC6SLX9 in a FTG256 1.0 mm pitch BGA package.
>
> *Ken K6MR *
>
> --
> *From:* elecraft-boun...@mailman.qth.net
> on behalf of Mark Goldberg
> *Sent:* Thursday, January 20
What is the chip and what package is it in?
73,
Mark
W7MLG
On Thu, Jan 20, 2022 at 4:47 PM Jim Brown wrote:
> The SVGA board in one of my two P3s has failed, and a friend who works
> for Elecraft told me it's un-repairable. The reason is that its the
> failure of a large chip that simply
There is no clear consensus because there are many different fluxes,
different use cases and different environmental conditions that the
products will be expected to be used in. It would be useful to find out
what the manufacturer of the particular flux used says to do. That is not
sufficient, as
I believe the SPE 1.5K-FA uses one 1800W Mosfet and the KPA1500 uses two
1400W Mosfets. In general, the KPA500 and KPA1500 are more robust than most
of the competitors. I've made mistakes a few times with my KPA500 and it is
still ticking. Everyone I've talked to with an ALS-600 has blown the
Their 100 Ah battery weighs 61 lb. I bet it is still a lead acid battery. A
100 Ah Lithium Iron Phosphate weighs about 31 lb. A Lithium Cobalt may be
half that.
They are dancing around but never say no lead or no acid, only "no acid
mist". Any regular gel cell meets that.
73,
Mark
W7MLG
On
There is going to be a remote application that runs on devices connected to
the K4 via Ethernet. It is not available yet. There is more info and a
preview in the K4 group a groups.io I saw it running on a tablet and it
provides control, panadapter display and more and is independent of the
screen
Those power banks are full of switching power supplies and I bet horrible
RF noise generators.
73,
Mark
W7MLG
On Mon, Aug 9, 2021 at 9:04 AM Gwen Patton wrote:
> I've got a Talentcell 12Ah LiFePO4 that seems to work just fine. I have
> some of their other little power banks, and they work
Most Hams do not have the test equipment to measure phase noise. The big
issue is 49.380 MHz is an unusual frequency and probably a custom order
frequency standard. The knockoff makers generally don't spend for a custom
part. They take a standard TCXO and generate that frequency using a crappy
PLL
For a 2 foot cable, I don't think the loss will be significant whatever
cable is used. Cable loss for RG8 is about 1.6 dB / 100 ft at 50 MHz. Cable
loss for RG8x is about 2.5 dB / 100 ft at 50 MHz. Cable loss for RG58 is
about 3.3 dB / 100 ft at 50 MHz. So 2 ft of each would be 0.03 dB or 0.05
dB
If you want the best, super easy to solder and strip, there is M16878/4.
M16878/5 or M16878/6 Silver plated stranded Copper wire with Teflon
insulation. It is very expensive and I can't see where to buy small
quantities except on eBay where it may be sketchy. /4 is probably most
typical 600V
For smaller customers that are not buying millions of parts at a time, it
is even worse, as they have no leverage. That includes the company I am
working for and I would assume companies like Elecraft. Even for simple
orders from distributors of in stock parts they are taking a week to ship
rather
Is the key line indication on all the time? This may be indicative of a
stuck key line. There was an unsoldered resistor on mine causing the issue.
73,
Mark
W7MLG
On Sun, Apr 18, 2021, 2:38 PM wrote:
> I just purchased a used KPA500 (SN 0456) from a close friend. The amp was
> just back to
Not to start a flame war about N vs UHF connectors, I prefer N and
built my KPA500 and Hardrock 50 amps with them. My KX3 remains BNC,
and any cable I have that is disconnected often is a BNC, sometimes
with a BNC male to N female adapter, which are really common. No one
but Hams still use
They are very short on specs. I expect it just contains a couple
resistors of unknown value. They are expensive if that is all they
contain. The concern I might have is the attenuation depends on the
impedance of the headphones. Since your headphones are already
unusual, it might be that their
On Wed, Mar 10, 2021 at 8:51 AM Wes wrote:
>
> Ok.
>
> How did you measure phase noise?
>
> Wes N7WS
>
>
> On 3/10/2021 7:55 AM, Mark Goldberg wrote:
> > If the Chinese TCXOs for the K3 are anything like the ones for Kenwood I
> > have measured, they exhibit mu
If the Chinese TCXOs for the K3 are anything like the ones for Kenwood I
have measured, they exhibit much higher phase noise. That will result in
much increased transmit phase noise. That will interfere with anyone trying
to listen close to you in location and frequency.
The K3 is a good
When does it disconnect?
Does it disconnect if you don't transmit?
Does it disconnect if you transmit with the KPA500 in standby?
Does it disconnect if you transmit with the KPA500 operating?
Does it matter which band you are on?
If the answers to the above are different, you may have an RF
The meter itself can be off too. Using more slugs does help things,
but to be really sure, test equipment needs to be periodically
calibrated, which Hams never do. Dummy loads should be measured with a
VNA. So, what you did is a big help, but still can't provide 100%
assurance that it is accurate.
I can't see this as being a good business model. A company has finite
resources. If they spend time and money on a rental business, they
can't spend time and money on their core business. I'd much rather see
Elecraft build and ship as many K4s as possible than spend time and
money on a rental
It's not lost on me that it is a 4K resolution image. My Ham shack
monitor is a 43" 4K TV just waiting patiently for a K4 kit.
73,
Mark
W7MLG
On Sun, Jan 24, 2021 at 12:17 PM Wayne Burdick wrote:
>
> Those of you who saw Eric's Friday presentation got a brief look at one part
> of our K4
You cable likely has a fake Prolific USB to RS232 chip. The latest
drivers will refuse to use it. Where did the cable come from? I don't
think Elecraft used fake chips.
You probably need a new cable to work with the latest drivers.
73,
Mark
W7MLG
On Sun, Jan 17, 2021 at 4:26 PM Chris Meagher
I had done some research a while back of various postings on forums
and came to the conclusion that the fixed Eaton BR or Square D
Homeline AFCIs would work OK in the presence of RF.
I have not tried either yet. ARRL had a link to a contact at Eaton here:
Thanks. I might even work on my screwdriver antenna autotuner now.
73,
Mark
W7MLG
On Mon, Dec 28, 2020 at 1:37 PM Wayne Burdick wrote:
>
> KX3 version 2.95 firmware is now available. It supports the "SW;" remote
> control command (read SWR value during transmit).
>
> One reason we added
On Sun, Dec 6, 2020 at 5:14 PM Dave Cole wrote:
>
> Hi Paul,
>
> Not to pick nits, but I would rather have them write code that does not
> worry them when the Linux kernel is updated.
Unfortunately, that is not possible.
I've been working with Linux for decades now. Unfortunately, they
Check if the key line is stuck on. Is the TX LED on when in receive?
73,
Mark
W7MLG
On Wed, Nov 4, 2020 at 5:56 AM Jim McDonald wrote:
>
> My KPA1500 seems to disconnect the antenna when switching the amplifier from
> standby to operate. It transmits OK but the receive signal path seems to
On Fri, Oct 30, 2020 at 9:55 AM Jack Brindle via Elecraft
wrote:
> Once you get all this taken care of, the KPA500 is a pleasure to use. But
> then I’m biased…
Can't resist. zero biased? self biased? good old fashion grid biased?
Hope everyone is OK and stay safe.
73,
Mark
W7MLG
I have an older wired alarm system that uses serial data, and it is
indeed awful. The serial data is quite slow but it has no filtering. I
added an LC filter that works well enough to keep the RFI out of my
station, at least down to the level of what comes from my neighbors
and keeps my station
I think that competitive prize part could just be dropped. If the
system wasn't successfully gamed this time, it will be next time.
There are plenty of folks around the world with time on their hands to
create bots to do just about anything. It just begs for someone to do
it and now they will have
On Sat, Aug 22, 2020 at 1:48 PM Eric Swartz wrote:
> We’re waiting for the recording K4 Q video that followed my show talk. the
> show recorded that one. When we receive it we will put it up on the Elecraft
> YouTube page.
>
> I’ll also check to see if we have the recordings from our various
Gem's Products KX3 and PX3 mounts and some plywood works for me. See
the bottom of this page:
https://sites.google.com/site/marksmobilehamstation/
73,
Mark
W7MLG
On Sun, Aug 9, 2020 at 1:18 PM Ron Bell via Elecraft
wrote:
>
> Any recommendation for a desktop stand for a KX3 and PX3 that would
On Sat, Jul 11, 2020 at 7:06 PM Frank O'Donnell wrote:
> As for Walter's point about the ATU, the results are mighty odd. I just
> set the KX3 to 40 meters with 15 watts out, appropriate slug in the Bird
> 43, set ATU to bypass and started keying. The power out dropped to about
> 5w. I then set
On Sat, Jul 11, 2020 at 12:41 PM Frank O'Donnell wrote:
>
> After a fair time of non-use, today I got out my KX3 and started working
> through configuration checklists. Among other things I thought I'd check
> the power out.
>
> For this test I used a Bird 43 and MFJ-260C dummy load. For HF I
un...@mailman.qth.net
> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Mark Goldberg
> Sent: Monday, June 29, 2020 9:09 AM
> To: Bob Morgan
> Cc: Elecraft Mailing List
> Subject: Re: [Elecraft] KPA 500 Codan Envoy
>
> That is not a Ham radio. Is it legal to use an amplifier
That is not a Ham radio. Is it legal to use an amplifier type accepted
for Ham radio for other services?
73,
Mark
W7MLG
On Mon, Jun 29, 2020 at 6:49 AM Bob Morgan wrote:
>
> I would like to know if any in the group has used the KPA 500 with a Codan
> Envoy 2. Any help would be much
NX1P created a modification that is legal for an individual Ham to do
at your own risk. It is more complicated than just a jumper. This is
the only site I could find it at:
https://docplayer.net/22608412-Kpa-500-modifications.html
73,
Mark
W7MLG
On Thu, Jun 18, 2020 at 8:34 AM Charlie T
The noise shown on the spectrum is not from the monitor. No change in or
off.
73,
Mark
W7MLG
On Sat, Jun 13, 2020, 8:54 AM Mark Goldberg wrote:
> On Sat, Jun 13, 2020, 8:03 AM Rick Bates, NK7I
> wrote:
>
>> I went with a 50" 4K TV (LG from Costco ~US$300) mounted t
On Sat, Jun 13, 2020, 8:03 AM Rick Bates, NK7I wrote:
> I went with a 50" 4K TV (LG from Costco ~US$300) mounted to the wall
> behind the operating desk. If your computer can manage 4K video (or
> even HD), LOADS of space to see (don't need my readers)
I also installed a slightly smaller
value of 0.0. Of course
> higher gain antennas typically have a bit less bandwidth, but still, the
> lower 1 MHz should be totally usable without a tuner.
>
> Besides, tuners only make the transmitter happy and the added feed line
> loss due to SWR still remains.
>
> 73
>
> Bob
I want to mention that my LDG AT-600Pro has a minimum capacitance that is
too high for a good match to my antenna on 6 meters. Certainly seems like
removing the Ten Tec tuner would be a good thing to try. Can you open the
Ten Tec tuner and use an IR thermometer to monitor the components? I don't
I haven't seen a discussion of your grounding system or feedline length. 6M
can be picky. What does your ground system look like? Do you have any
common mode chokes on the feedline? Have you tried adding or subtracting
2-3 feet from the feedline? If it is exactly a multiple of 1/2 wave or 1/4
I tend to agree. With the right calculations, the reported power, SWR and
matching inductors and capacitors from the KPA1500 will tell you more about
the antenna. In addition, the KPA1500 already has a monitoring port that
could be used for an output modulation / spectrum monitor. Of course,
In actual usage, I get about 250W - 300W out from my KPA500 when driven
with 15W from my KX3.
I use it in my RV station, description linked to on my qrz.com page.
73,
Mark
W7MLG
On Sat, May 16, 2020 at 1:40 PM Edward R Cole wrote:
>
> Just read the KX3 (with upgraded firmware) does 15w
I do want to understand what "must accept" means. Why did the FCC put #2 in
there?
I'm from the avionics industry. We have to not produce unwanted RF
interference and we have to operate correctly in the presence of high
levels of RF. Especially in recent years, someone could put their phone
down
Have you contacted Bose? They are FCC part 15 and even say this in the user
manual:
This device complies with part 15 of the FCC Rules and with Industry Canada
license-exempt RSS standard(s).
Operation is subject to the following two conditions: (1) This device may
not cause harmful
Careful, I bet this is a phishing email. The domain is registered in India.
I bet is does not actually belong to Mcafee and actually is owned by one of
those fake call centers that charge you to remove a virus that they
installed.
73,
Mark
W7MLG
Domain Name: MCAFEECOMACTIVATES.ORG
Registry
My confusion is connecting the KPA500 to both the KX2 and K3 at the same
time. I use my KPA500 with two different radios, but it is only connected
to one of them at a time. In my case it is:
RF, RS232 and PTT in from my TS-590S
OR
RF, and PTT in from my KX3
I assumed that pull ups / downs when
On Tue, Apr 21, 2020 at 12:29 PM David Gilbert
wrote:
>
> Well, not all 10:1 conditions are equal (low impedances tend to give
> higher tuner voltages and power loss than higher impedances),
Dave's comment is very significant. Matching capability, loss and the power
level a tuner can handle
It was about $24 with tax last summer, but I was able to pick it up, so
tax, but no shipping.
73,
Mark
W7MLG
On Wed, Apr 15, 2020, 2:12 PM Richard Perry wrote:
>
> ... and that ALL having been said, I'll bet you that the cost of a
> replacement cover from Elecraft is cheaper still :)
>
>
>
On Sat, Apr 11, 2020 at 6:09 PM Bob McGraw K4TAX
wrote:
> My 6M yagi shows a 5.3:1 SWR as indicated on my K3S on 28.3MHz with the
> ATU in Bypass mode. When the KAT3A ATU in the radio resolves a match,
> the indicated SWR indicated is 1.1:1 on the radio.
>
> Using the same antenna but using
My experience is that slowly increasing SWR is from a component heating up,
usually an inductor in a tuner or balun. You don't see it with lower power.
Ferrite cores change their inductance radically as they heat up near their
Curie temperature. If they get to their Curie temperature, they lost
I have a 12V 20 Ah (240 Wh) LiFePO4 and it will run my heated CPAP machine
(likely a different model) for two nights in a tent (about 50 Degrees F).
The FAA will allow two spare batteries up to 160 Wh each most of the time.
I think, unless you can charge the battery before using it for the radio,
My Morningstar PWM controller has a bang bang mode that only switches once
a second or so. In the normal mode it is noisy. You give up the extra
efficiency from an MPPT charger, but it is much cheaper.
73,
Mark
W7MLG
On Sat, Jan 4, 2020 at 8:45 PM Jim Brown wrote:
> What can you tell us about
Contact my friend Harry at h.niedec...@wirlnet.com (
https://squareup.com/store/wirlnet-com). He builds larger systems, but may
have a smaller one too. In any case, he knows the lay of the land and what
is good and what is not. Tell him I sent you.
I use 12V LiFePO4s which keep the voltage up
Although I expect you are nowhere near me, where is the tower located? What
rotor? Those will probably help sell it, as transportation for a tower and
antenna system that big is an issue.
73,
Mark
W7MLG
On Tue, Nov 12, 2019 at 2:33 AM David F. Reed wrote:
> Due to an upcoming move, I am
Richard:
If you are asking about anti-seize, I use Nickle anti-seize on stainless
hardware, even in Aluminum.
What is your environment? Are you near salt water? What are your
temperature extremes?
I am in a dry climate so Aluminum - Stainless Steel galvanic corrosion is
not a big issue.
John:
You can find a lot of explanations by searching "advantages of direct
conversion sdr".
Adam has a good explanation here as it relates to amateur radio:
https://www.ab4oj.com/sdr/apdxc16_sdr.pdf
The K4 page K4FAQ tab has some good info too:
https://elecraft.com/pages/k4-pre-order
73,
Mark
I have a well used hot air gun (OK Industries SMT-1160) but I use my Metcal
iron and hot tweezers a lot more. They have an infinite selection of tips
for almost anything. They are expensive though, even used.
For us old farts with unsteady hands and bad eyes, a vacuum pickup, lots of
tweezers and
I have no experience with that one, but a common failure of other small two
port VNAs is ESD blowing the RF switches at the ports. That is a one port
VNA, so I don't know if it even has switches.
What can it hurt to replace whatever part is closest to the connector?
I have a MiniVNA Tiny two
Take a look at this coax loss calculator. It will tell you how much loss
there is in the coax, including extra loss due to SWR. You will have to
determine how much loss you can tolerate.
https://www.qsl.net/co8tw/Coax_Calculator.htm
73,
Mark
W7MLG
On Tue, Aug 20, 2019, 12:19 PM Carter Craigie
https://www.thebalancesmb.com/how-money-laundering-works-on-ebay-4145387
73,
Mark
W7MLG
On Thu, Aug 8, 2019, 2:09 PM David Gilbert wrote:
>
> It doesn't seem obvious at all to me that it's a knockoff. There are
> only 2 units available and he's asking way too high a price for a knockoff.
>
>
ood
> points. As to the final fold-back, if I waded through this correctly, I
> understand that the OP has the built-in tuner in his KX2. That solves
> that issue.
>
> BTW, SWR = 15:1 is a return loss of about 1.1 dB, not 3 dB.
>
> Wes N7WS
>
>
> On 8/7/2019 5:29
You need to take into account the radio finals. When the SWR is high, My
KX3 cuts back because it gets too much reflected power. I expect the KX3,
and in fact any other radio or amplifier is similar. 15:1 is about half the
power coming back.
Regards,
Mark
W7MLG
On Wed, Aug 7, 2019 at 5:14 PM
The exact cable Wunder suggested is still available at Amazon for $4.95.
They can probably thank him for some sales! I bought one.
73,
Mark
W7MLG
On Fri, Jul 5, 2019 at 1:11 PM Don Wilhelm wrote:
> Note carefully that Wunder specified a "SPLITTER" and that is different
> than an 'adapter'.
>
On Fri, Jul 5, 2019 at 12:54 PM Jack Brindle via Elecraft <
elecraft@mailman.qth.net> wrote:
> As commonly used, bandpass filters have one main use - to protect
> receivers. That may be the local receiver, protecting it from sting out of
> band signals, or a neighbor receiver, gain protecting it
d idea. And to me it seems the answer is yes.
>
> I think we all agree that the right feed impedance and load impedance
> for a filter is important. And as I pointed out, not just for power
> handling, but also for the filter to actually filter as it was intended.
>
> 73,
> Dav
I could not let this go. I've done a lot of work with bandpass filters. The
mismatch will degrade the filter.
For an example, I used Elsie, which is a filter calculator. Using the
example 20 Meter bandpass filter, the passband loss is about .25 dB with
matched 50 ohms in and out. Changing the
I'm going to take these two postings and suggest the possibility of RF
getting into the USB link to the PC causing it to drop samples.
Check the grounds and make sure there is a good ground connection between
the PC, Signalink and the radio equipment. Try ferrite beads (Mix 31) on
the USB line or
Can you watch the SWR when this happens? If the antenna is hard to tune,
the tuner may find a match, but it may actually be fairly lossy, with power
being dissipated in the tuner. As the tuner inductors heat up, they change
value, and the SWR goes up, triggering a retune. You should be able to see
LiFePO4s will stay at high enough voltage for most of the discharge cycle
to keep the KX3 above 15W. 9Ah will run it a long time.
Regards,
Mark
On Fri, Jun 28, 2019 at 1:14 PM Chris Waldrup wrote:
> Will the Bioenno batteries have enough terminal voltage to get the 15W?
> I'm looking at a
I've brought the 3 Ah ones on aircraft multiple times and had no issues. I
brought a copy of the UN safety certification that I got from the battery
company but have never been asked for it.
The batteries did save me from having my bag checked once though. I put my
bag in the overhead. Someone
Go with LiFePO4 cells. Four cells will keep the voltage between 12 and 14.4
V from 10% to 100% state of charge and most of the time the voltage is
between 13 and 13.5 V. I use small ones (3 AH )for backpack portable
operation, 20 AH for fixed portable and my RV has 400 Ah to run the rig
forever!
Oops, adding my call.
Mark,
W7MLG
On Mon, Jun 24, 2019 at 11:44 AM Mark Goldberg
wrote:
> I'd be interested to hear how it does in the presence of close in strong
> signals, especially SSB. I was operating a KX3 on SSB in close frequency to
> someone that was far away, but the
I'd be interested to hear how it does in the presence of close in strong
signals, especially SSB. I was operating a KX3 on SSB in close frequency to
someone that was far away, but they had all the knobs up to 11 and was
maybe S9+20 and about 10 kHz wide with lots of splatter. I could hear
anyone
I cut a cross-section of my battery cable crimps and it essentially is one
solid block of copper:
See this page:
https://sites.google.com/site/marksrvmods/home/battery-wiring
Note that expensive crimpers are "calibrated". They make one or more
connections on sacrificial wiring and cross-section
What do people think about voice recognition? Recent Google Android phones
do a decent job of voice recognition on the phone itself with no connection
to the internet or cloud voice recogniton servers. There are open source
voice recognition software applications that run on Linux. No idea how
Way down in the specs you have the sampling rate, 122 MHz and I don't see a
spec for the A/D Equivalent Number Of Bits (ENOB). That is a useful measure
of the dynamic range, as most if not all 16 Bit A/Ds have a lower number of
ENOB. Perhaps these should be more prominently advertised as they can
My Sprinter is rated by Mercedes to handle 100W at HF. I'm pushing that a
little, but that is another reason I am satisfied with 250W. Sprinters are
used a lot for ambulances, work trucks, and government vehicles, all with
radios, so I figure if they had RF problems, they would have to fix them. I
On Mon, May 6, 2019 at 12:12 AM John Marvin wrote:
>
> So, how is this Elecraft related you might ask? Well the club is still
> looking for operators, and Elecraft is a sponsor for the event,
> providing four KX3's and four KPA500 amplifiers for the event (Thanks
> Wayne and Eric!). So if you
How much do you want to spend?
One of these Bird Termaline series, or similar is the top of the line, but
will cost you:
https://www.birdrf.com/Products/Test%20and%20Measurement/Loads/Coaxial-Terminations/500-watts/8201_500-Watt-Oil-Cooled-Terminations.aspx
I was lucky to find a DA412B/U
Forgot to include my call.
73,
Mark
W7MLG
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The I/Q feeds through the PX3. You need to take the I/Q out of the PX3 and
send it to a high quality sound card, usually a USB sound card.
If you want wideband, choose a 192 kHz card from here:
http://www.telepostinc.com/soundcards.html
I use a U7.
The rig control also feeds through the PX3
It's been said there are no coincidences. Have you checked your coaxes /
connectors? I agree that protection built in should not allow radios to
blow finals, but this sounds like too much of a coincidence with two
different radios blowing to not be an external intermittent connection. Try
wiggling
Take a look at this in the archives:
http://elecraft.365791.n2.nabble.com/KPA1500-Static-IPv4-address-td7645170.html
Maybe something there will help. There are ways to do it in a more secure
manner.
I'm not a big fan of exposing your $6000 amplifier with no security to the
wild internet.
On Fri, Feb 1, 2019, 7:33 AM Barry
> The insurance claim, processed by the vendor paid for the replacement which
> was then shipped. The invoice on the second one was marked "replacement
> for
> damaged product," and valued at $10, so it passed right through without any
> duty or tax. That's
I would expect any high Q antenna like a loop would be detuned by any
movement or any metal you pass by. One more reason to support automatic
mobile screwdriver / mag loop antenna tuning on the KX series.
A flag on a backpack would be more or less ignored. Just put a flag on the
top of the AX1.
Actually, there are issues with USPS Priority Mail if you use Paypal and
sell to someone you don't know and hope to use the Seller Protections. If
you read the fine print, Paypal does not accept the proof of delivery
unless a specific signature is obtained, which is not available with
Priority
It's been said before. Check your cables and connectors for arcing. It
won't happen with lower power but as the voltage goes up with higher power
it may arc across a bad cable or connector. Possibly even in a tuner.
Can you test with different cables or a dummy load?
73,
Mark
On Sun, Dec 30,
Are you going to use the KX3, KXPA100 and the KPA500 all together? I can't
help with that as I don't have the KXPA100.
I use the KX3 with just the KPA500. You get about 250W out with 12W in.
You use the ACC2IO cable that comes in the right angle cable kit or
standalone and an RCA to RCA cable.
What is your menu setting for MIC BTN? If it is set to UP.DN and used with
a non Elecraft mic without up/down buttons, it may trigger the frequency
change. Try changing the setting to PTT.
73,
Mark
W7MLG
On Wed, Dec 5, 2018 at 6:41 AM André .. wrote:
> Hello to everyone .
>
> I have a
Amazon reviews are not good for similar cells of the same brand, lots of
references to them popping and leaking chemicals out, sometimes even with
the supposed right charger. They also are reported to lose capacity quickly
with a few discharge cycles. I also expect that 3000 mAh is an
I have to second the VPN solution. I have a similar setup with an incoming
VPN. You can be anywhere in the world with a computer or mobile device and
connect to your home network and have access to everything as if you are
there.
I also use OpenVPN, but on a larger Linux computer. It also can be
A good one that you know is 50 ohms over the range of frequencies and power
you want to use it at. Unfortunately, any particular model may be good or
bad, depending on how it has been used or abused. Is there any way you can
get access to an analyzer to determine if the dummy load is good? I have
Take a look at Autohotkey. It is a scripting language for Windows that can
do things like simulate key presses and mouse clicks, and a whole bunch
more. If you can write it in their scripting language and compile it to an
executable, that can be run on startup. I use it to automate the
Can you try the K3 utility and talk directly to the K3 and eliminate HRD
from the picture? You could try the Windows and Linux versions and compare
operation. Someone else may have to suggest what operation would exercise
the interface. I would NOT try a firmware upgrade, try something innocuous
HI, can you confirm that the KXUSB uses TTL signal levels rather than
standard RS232 levels? I got an extra one with my PX3 and repurposed it to
talk to a GPSDO that requires TTL serial levels and it seems to work fine.
I just put a 3.5mm TRS jack on the GPSDO.
73,
Mark
W7MLG
On Mon, Aug 6,
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