I've tried to determine where the clicks originate without success.
I've loosened screws on the top and right side and tightened screws on
the top and right side. No difference. Perhaps someone at Elecraft will
add a comment in this regard.
I did observe that the 5 screws at the center of
/14/2018 19:52, Bob McGraw K4TAX wrote:
What is the recommended solution to stopping the clicks and pops from
the KPA500 as the amp heats during transmission and cools during
receive? I've seen one that suggested replacing the screws in the Z
bracket with 4-40 x 1/4". Any tra
Yes, use only method for PTT. Either CAT or VOX, but never both. I
prefer CAT as, for digital operation, I don't have to mess with the VOX
values for my normal SSB operation.
73
Bob, K4TAX
On 10/20/2018 6:52 PM, Nr4c wrote:
Sounds like you have more than one PTT control active. Check
Make sure you are using only one PTT method. CAT or VOX but never both. I
prefer CAT as any signal or any noise on the audio line will trip the VOX and
thus hold it in transmit.
Bob, K4TAX
Sent from my iPhone
> On Oct 21, 2018, at 11:04 AM, Bill Frantz wrote:
>
> I indeed had MIC BTN
Terry:
My first thought, KX3 over K3S, is portability. If you have the space
and don't usually operate portable, the K3S is the choice. As to price
that is always way down the list and secondary with me in a much as I
demand performance, do not operate portable, have the space for the
wunder
> K6WRU
> Walter Underwood
> CM87wj
> http://observer.wunderwood.org/ (my blog)
>
>> On Oct 17, 2018, at 6:52 PM, Jim Brown wrote:
>>
>> On 10/17/2018 6:36 PM, Bob McGraw K4TAX wrote:
>>> At the same time, many of my contacts are made with 50 watts
ers.
Not picking on you personally, but you made the statement so figure
maybe would reply. Just curious.
73, Ed - KL7UW
* that I/F later was used for JT-65 on eme 15 years ago. Now use my
K3 directly connected.
Date: Tue, 16 Oct 2018 16:59:15 -0500
From: Bob McGraw K4TAX
To: "Dauer, Edw
Check your MON level on your K3. I run mine about 8 for digital
modes. I know nothing about the MicroHam DKII. I just run the USB
interface between the computer running the application software and the
radio. I only use 3 software applications, WSJT-X, HRD or FLDIGI.
And with those, I
Nope. That is the same grounding scheme I've used for years. The 3rd
pin safety ground is really all that is needed for the station inside.
As to lightning protection, that is done outside of the house and takes
into account the tower, the rotor, the antennas and it is bonded outside
of the
The word we use is "mitigation". All efforts in this regard are done
to minimize damage. Note that I used "minimize damage". With
lightning, "elimination of damage" is not a word or phrase we use.
Thus with lightning, "mitigation" methods should be carefully
considered, and in the
Agreed. And your grounding system alone certainly cost several
thousand dollars more than most ham stations.
I will also add, if your ground system, implementation and methods do
not comply with NEC, in the event of any loss, your insurance company
can simply say "it has been nice doing
Depends on which version of WSJT-X being used. For V1.9.1 the 77 bit
message does not apply. For V2.0.0 RC3 it does apply.
73
Bob, K4TAX
On 10/30/2018 10:22 AM, Don Butler wrote:
Same intermittent problem here. I finally found that the ‘Decode only 77 bit
messages’ box seems to be
If one used a KAT500, as I do, it has static bleed resistors on all antenna
inputs.
Bob, K4TAX
Sent from my iPhone
> On Oct 30, 2018, at 2:50 PM, Fred Jensen wrote:
>
> Does my K3 have a static bleed across the antenna terminal(s)? A number of
> years ago, our CQP team in Alpine County
I basically do the same with different radios. The K3S is connected to
the KAT500 and then through the KPAK3AUX cable to the KPA500. The
other radio has a Amp Key output basically an open collector to ground
which I connect to the PA Key input. Either radio will key the KPA500
and no
Excellent point Bob. I'd not thought about that approach.
Thanks
73
Bob, K4TAX
On 11/7/2018 5:01 PM, Bob Wilson, N6TV wrote:
On Mon, Nov 5, 2018 at 12:32 PM Bob McGraw K4TAX
wrote:
I basically do the same with different radios. The K3S is connected to
the KAT500 and then through
Thanks Eric - The system integration is really super. Updates are so
easy and solid.
Thanks
73
Bob, K4TAX
On 11/7/2018 7:18 PM, Eric Swartz - WA6HHQ, Elecraft wrote:
We’ve just released KPA1500 firmware version 01.87 to production and
is available for download. We recommend everyone
What's spam? I never see any using Greymail as my filter and none of
the senders ever know they've been filtered. I do check the contents
on a regular basis and rarely, very rarely, do I ever find a message
that should have passed through. Best of all, it is easy to use and FREE.
73
:37 AM
To: Jim KO5V , Bob McGraw K4TAX , Elecraft
List
Subject: Re: [Elecraft] K2: KPA100 fan issue + current question
Jim,
That 11 amps would sound more reasonable to me if you can say that the
base K2 is being powered separately, but I would expect something closer
to 50% efficiency rather than
. As to how they interface with
various logging applications, I don't have a clue.
Glad to be of assistance.
73
Bob, K4TAX
On 11/8/2018 2:44 PM, Doug wrote:
Thanks for the idea. Works great and got me away from the problems
using the IF out.
73 Doug N3QW
On 11/8/2018 10:53 AM, Bob McGraw
The model that DXE is selling is a VHF amp. Note the disclaimer for the
HF model - RM Italy KL 405v HF Linear Amplifier with Fan
"Export Only: This Model is not for sale in US, we only ship to the
address outside of US."
Needless to say, I would not run my call through one of these amps.
Zero hum from mine. From other comments, be sure the power transformer
is correctly installed and secured. It may have moved during
transportation if you purchased a factory built unit.
As to 20 watts drive and 350 watts out, what bands? With 20 watts
drive from my K3S I see 450 to 550
My comment and understanding on "FCC Certified". The FCC now allows
companies to perform "self certification". In other words, they allow
the fox to watch the hen house. The companies can elect to do the
testing and submit the results to the FCC. Thus the FCC does not
actually test
Pete et al:
I purchased my K3S 100-F in August of 2015. I experienced a failure
in the form of distorted SSB audio in April 2018. Working with the
techs at Elecraft they suggested and supplied a new KPA3A. That unit
was received and installed and failed within a week. They then
If it will tune to the IF frequency of about 8.2 MHz. From experience,
without an up conversion added, they won't tune that low.
73
Bob, K4TAX
On 11/8/2018 9:57 AM, WW3S wrote:
Can you use one of the less expensive sdr dongles in a similar way?
Sent from my iPad
On Nov 8, 2018, at 10:19
I used HDSDR software and a BNC T and a couple of short coax jumpers
from the RX ANT output back into the RX input. Activate the feature
from the front panel of the K3S. The input impedance of the RSP-1
SDR is well above 50 ohms and thus I didn't observe any loading or loss
of the
l SO2R
> boxes that will accomplish the same thing.
>
> 73,
> Don W3FPR
>
>> On 11/5/2018 3:30 PM, Bob McGraw K4TAX wrote:
>> I basically do the same with different radios. The K3S is connected to the
>> KAT500 and then through the KPAK3AUX cable to the KPA5
At 13.8 volts, 11amps is about 152 watts input. 100/152 = .658 * 100 for about
66% efficiency.
All in all , looks about right to me. AKA - I wouldn't be concerned.
Bob, K4TAX
Sent from my iPhone
> On Nov 9, 2018, at 10:46 AM, Jim KO5V wrote:
>
> Well, after checking that all of the
r in a corner of the chassis. Tells you where to look.
>
> 73,
>
> Fred ["Skip"] K6DGW
> Sparks NV DM09dn
> Washoe County
>
>> On 10/4/2018 3:15 PM, Bob McGraw K4TAX wrote:
>> Thank you Don. Over and over again, I've said "what did you do las
Thank you Don. Over and over again, I've said "what did you do last,
before you broke it?" Well then, go undo that.
73
Bob, K4TAX
On 10/4/2018 5:03 PM, Don Wilhelm wrote:
Mike,
It is not unusual at all for things to "get jumpy" when the computer
is busy doing some frequent task.
Why
I would look closely at the ALC level and the CMP level to see that the
new mike, which has more output, is not driving things into
saturation. Likewise, as Jim, K9YC says, use the TX EQ to get rid of
some of the low end, thus not to suck up power which is not heard on the
other end. And
For my SM58 and my K3S I use the following:
50 Hz -16
100 Hz -16
200 Hz - 9
400 Hz 0
800 Hz 0
1600 Hz 0
2400 Hz +3
3200Hz +6
The Behringer XM8500 dynamic mike gives identical performance and it
costs only $20. Heard one and just had to try it. I can swap between
Or if you will, when you sit down to operate, go to Windows Time and Date and
update the time. More than adequately accurate for several hours of
operation.
Bob, K4TAX
Sent from my iPhone
> On Oct 6, 2018, at 3:15 PM, Larry (K8UT) wrote:
>
> David
>
> >There should be very little
I normally start with the IF NB OFF. Turn on the DSP NB and adjust the
level for what I feel is optimum effect. Then remember the ## and set
it to OFF. Then turn on the IF NB, set it to what I feed is optimum
effect. Then go back to the DSP NB and set it to the previous value.
Best done
While I use both WSJT-X, V1.9.1, and HRD, I allow WSJT to create and
save its own log. Then I transfer the entries from the WSJT log to my
other log system. That then uploads the selected entries to LOTW.
I've more often than not found that if I allow one software to run
within or under
The value of SWR doesn't really inform us about the load impedance, line
current or line voltage conditions existing.
In the case of a 1.5:1 SWR, the load Z is 75 ohms, with a power of 500
watts the line current is 2.58 amps with a voltage of 193.6 volts.
At the same time a 1.5:1 SWR, the
Here is another good information source on baluns and specifically the
type of material and how it performs under various conditions.
http://www.karinya.net/g3txq/chokes/
As it is said "I have no dog in this fight".
73
Bob, K4TAX
On 9/2/2018 8:28 PM, Bill Frantz wrote:
This is one of the
I had assembled two K3 radios for friends that didn't believe they were
competent to do so. In doing this, I was able to use these radios for a
few weeks. I noted some artifacts regarding the receive audio and
elected not to purchase one for my station at that time.
Then came along the K3S
Personally having used two different K3 radios and then my K3S, the
difference was enough for me to buy a new K3S. Small or
incrementalnah, very noticeable specially coming from someone
{me} who worked in professional audio and recording studio environment
most of my career. Of
I have two original K3. Wondering if I missed something. The "S" has
improvements to receive audio? Or is this just referring to the new synthesizer?
Thanks & 73,
Josh W6XU
Sent from my mobile device
On Sep 3, 2018, at 7:24 AM, Bob McGraw K4TAX
Then came along the K3S with its
Don't shortchange yourself by looking at only 1 or 2 parameters.
Here's the list. Some items can be upgraded in a K3 to make it almost
to the level of a K3S.
** Ultra low-noise synthesizer for exceptional strong-signal receive
performance and transmit signal purity (KSYN3A)
** USB
The RX Ant In and RX Ant Out are protected during transmit. As to
protecting the input of the SDR-IQ, make sure you use very good quality
connectors and very good quality coax such that any transmitted RF is
not picked up by leakage into these components. I use Amphenol BNC
connectors and
ke the solution is to get a spare K3s right side panel and
sib-machine it in a way that it can serve as a common panel for both
components
73,Clay, KY5G
Sent from my Verizon, Samsung Galaxy smartphone
Original message ----From: Bob McGraw K4TAX
Date: 9/21/18 16:45 (GMT-06:0
Based on published numbers, the P3 is 6.1" wide, the K3S is 10.7"
wide. As I recall a 19" rack shelf is 16.75". If all is correct, a
real tight fit, I'd say.
73
Bob, K4TAX
On 9/21/2018 4:36 PM, Clay Autery wrote:
I haven't measured lately... Is a K3/P3 width too wide for a single 19"
I just took mine to the authorized Fed-X shipping store and let them deal with
it. No hassles. Less expensive than UPS and faster service.
Bob, K4TAX
Sent from my iPhone
> On Sep 25, 2018, at 1:36 PM, Grant Youngman wrote:
>
> The thread started by the gentleman who thought his KX2 might
w, N8VZ
>> 17 Coventry Lane
>> Athens, Ohio 45701-3718
>>
>> c...@n8vz.com
>> www.n8vz.com
>> EM89wh
>>
>> IRLP 4533 Echolink 116070
>>
>> PSK and JT65 Forever!
>> ===
>>
>>> On Sep 25, 2018, a
Just purchased a NIB P3 for my K3S station. Love it!
Question - is it normal for it to initially power on with a bright white
screen while it loads? This is very brief, but sure makes a flash. If
normal, then so be it. It is powered from the DC jack on the K3S. I
always switch the
on, replaced with a P3 boot loader message, that's also
> gone very quickly.
>
> Martin, HS0ZED
>
>
>> On 26/09/2018 07:15, Bob McGraw K4TAX wrote:
>> Just purchased a NIB P3 for my K3S station. Love it!
>>
>> Question - is it normal for it to init
See manual page 19 PWR ON Also BAND CHG is the other parameter.
Good luck with the repairs.
Bob, K4TAX
Sent from my iPhone
> On Nov 16, 2018, at 8:56 AM, Michael Walker wrote:
>
> Thanks all
>
> I'll check the menu. I certainly don't remember it being there, but I will
> have a 2nd
Look for me various hours on 6M using MSK-144. I'll be using my K3S and
KPA500 to excite the 4 ele yagi.
*THE LEONID METEOR SHOWER: *Earth is entering a stream of debris from
Comet 55P/Tempel-Tuttle, source of the annual Leonid meteor shower. NASA
cameras have already detected a number of
Probably you will need a good shielded USB cable and may need to add a
clamp on ferrite choke on the cable close to the computer. I went
through 4 different brands of cables and types of USB cables before I
found one that didn't have issues. The one I ended up using does have
"shielded"
Shucks, I waited 40 years to finally own a complete Collins S Line.
Then at age 74, and fully retired, I purchased a complete Elecraft K
Line. Love it. Now at age 76, I figure it will last me to my final QSO.
73
Bob, K4TAX
On 11/16/2018 12:31 PM, Bob Nielsen, N7XY wrote:
I bought my
NO MORE CONTESTSPLEASE!
73
Bob, K4TAX
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I have a small COMPOSITION notebook by my computer. It contains all of
the USER and PASSWORD information for every account I use. Each page is
designated for a user site and there is plenty of room to write down the
current password for that account. And I do change passwords
frequently.
Ditto on those points. Yes, Thunderbird is a excellent application. Very easy,
very powerful and free.
Bob, K4TAX
Sent from my iPhone
> On Dec 29, 2018, at 10:44 AM, Tim McDonough N9PUZ wrote:
>
>> On 12/29/2018 6:47 AM, Don Wilhelm wrote:
>> Please *don't* switch to a message board! I
I always sell for a price and state that the buyer pays packing and
shipping charges. I don't recall ever loosing a sale due to those
terms. I use a commercial packing service and can always quote the
packing and shipping charges once the destination is known.
In general I find USPS
Think Field Day where it is normal to run several transceivers at the same
time. Antenna separation and orientation is a key factor plus good quality
band pass filters for each radio.
Bob, K4TAX
Sent from my iPhone
> On Jan 1, 2019, at 11:27 AM, wrote:
>
> Two transceivers is a typical
that would be cause for termination.
Sent from my iPad
On Dec 29, 2018, at 1:30 PM, Bob McGraw K4TAX
wrote:
I have a small COMPOSITION notebook by my computer. It contains
all of the USER
and PASSWORD information for every account I use. Each page is
designated for a user site
What amp?
With mine I just press TEMP on the front of the amp.
73
Bob, K4TAX
On 1/4/2019 8:40 PM, Jamie WW3S wrote:
I seem to recall there is a way to display the PA temp but cant find the
setting to do that.
__
Elecraft
First would seem that something in the antenna system is causing a
problem. I run my KPA500 & KAT500 at 450 to 550 watts out without any
issues. What's the antenna and feed line being used? What bands? Is
the output of the FLEX surging as well?
73
Bob, K4TAX
On 1/6/2019 3:36 PM,
Yes I use a balanced feed line being the "window" type line. It feeds
a 250 ft wire in the center at 50 feet. I have about 75 ft of feed line
from the center of the antenna then, through the attic eve vent,
supported on some wooden hangers I made and attached to the roof
rafters. Then it
Correct on all points.
That is the reason I gave my feedline type, and length and antenna
length alone with specific balun type and common mode choke type. Any
old ragged combination of chunks of wire and feed line is not assured to
work and is largely the reason many hams shy away from
I agree with Jim on this point. I have means to measure current in
each side of the balanced feed line. And I have means to measure the
voltage on each leg and observe the phase difference in each leg. A
dual trace scope with 2 current probes is the basic configuration. If
the currents
I agree with Jim on this point. I have means to measure current in
each side of the balanced feed line. And I have means to measure the
voltage on each leg and observe the phase difference in each leg. A
dual trace scope with 2 current probes is the basic configuration. If
the currents
I agree but in the case of using two radios, two pair of headphones, a
switching system and getting hum indicates a serious deficiency in the
station interconnection and ground scheme. Everything should be at the
same potential, thus no current would flow. As they say "sum-tin not
right".
I see no need for isolation transformers with headphones. Likely the
transformers is the reason the HP output won't drive a pair of
headphones. Isolation transformers? Are they 3 winding hybrid
transformers? I've used them in professional audio installations but
they are rare and
Perhaps someone will come up with petite or very tiny jumper cables.
That might solve the Low Battery issue. Maybe a "jumper cable kit".
:-)
73
Bob, K4TAX
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Elecraft mailing list
Home:
I have experienced issues where a computer and the application software
left fragments of data in the radio. Not specific to the KX2 but could
be. From your description it seems the radio was in FSK mode. That
performs as you described which is a function of APF.
I have found in most
I have a whole house surge protector installed at the Mains breaker
panel. Thus I find no need to have individual surge protection for any
of the equipment locations in the QTH. This takes care of microwave,
range, furnace, washer, radios, TV's, entertainment systems, phone
system and such.
If lightning is the item of concern, there's bigger fish to fry in that
regard. Lightning protection is an entire other story and a very
specific approach to lightning mitigation. I use the word
"mitigation" to emphasize the point that all efforts for lightning
protection is an effort to
Using matching transformers and my spectrum analyzer with tracking
generator, I measured a 100 ft length dry and I measured it wet. My
measurements indicated the velocity factor changed when wet, i.e. the
electrical length of the line changed. Thus explains to me the reason
to "retune" when
-boun...@mailman.qth.net On
Behalf Of Bob McGraw K4TAX
Sent: Friday, January 18, 2019 10:30 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KPA500 external mains switch
I have a whole house surge protector installed at the Mains breaker panel.
Thus I find no need to have individual surge
There is a Freq Cal mode in WSJT-X. I suggest if the radio or sound
card is in question, run this mode and determine the results. Bet
you'll be surprised at the inaccuracy of the digital readout on a radio
and or soundcard. I was!
73
Bob, K4TAX
On 1/18/2019 3:23 PM, Don Wilhelm wrote:
One easy method is place the radio on the CW mode. Time to one of the WWV
frequencies. Press the SPOT to activate the function. Any difference between
the WWV frequency and the readout is the error.
Bob, K4TAX
Sent from my iPhone
> On Jan 18, 2019, at 4:42 PM, Mike Harris via Elecraft
>
This type of discussion makes me wonder if folks are feeding audio
direct from the computer to the Line IN on the rear or to the MIC
input. If they are using an external soundcard, i.e. Signalink or such,
then I can understand Windows sounds being heard. Not good.
If they are using the USB
So what happens if you don't run Win4K3Suite? I run WSJT-X and nothing
else and have NO issues with audio, control, or Windows sound. I find
that WSJT-X handles everything that is needed, radio control, audio
control, and logging.
Conclusion: More software applications running = more
This all works with Windows 10 Pro. I've not used the Home edition.
73
Bob, K4TAX
On 1/20/2019 6:14 AM, Andy Durbin wrote:
"Hope you check your windows setting, you might be surprised."
No surprises here. I have never had my rig CODEC as the default sound playback device.
I don't have
having problems setting up CAT for their radios give this a try and see how
> well it works. And BTW: I do use FT8 fairly regularly as well as RTTY and
> PSK31.
>
> 73,
> Barry
> K3NDM
>
> -- Original Message --
> From: "Bob McGraw K4TAX"
> To: elecraft
Are you saying the K3S does not go into the transmit mode, or are you
saying there is no audio?
From the K3S CONFIG menu you should have RS232 set to USB. The K3S
Menu should have MIC SEL set to Line IN. Is anything plugged into the
Line In on the back of the radio? Unplug it if so. The
I didn't measure significant increase in loss with clean water i.e. tap
water sprayed on the entire length of the line from a hose. I did make
a solution of dish washing detergent and water and , using a spray
bottle, sprayed that on the line. This caused much more water to cling
to the
Just be glad they don't use TOTSU screws typical of many Japanese
products. i.e the dot and slot ones. Find one of those
screwdrivers at Harbor Freight.
73
Bob, K4TAX
On 1/15/2019 11:04 AM, Arthur Nienhouse wrote:
*/Don
Good advice on shinny Phillips drivers.
Are the screws in the
Another trick which works well. Tune to a WWV frequency in CW mode.
Press SPOT and the radio will jump on the exact carrier frequency. The
SPOT function can pull on to the WWV frequency as far away as about 100
Hz. Once the radio has resolved SPOT, the readout / display is the
frequency
Yes CAT can be somewhat confusing IFyou are running multiple
applications at the same time. Otherwise, I use CAT for: WSJT-X,
FLDIGI, HRD/DM780, MMTTY and have zero issues with any of the
applications or levels or commands. And all were easy to configure and
are reliable. When I
I'd say initially that you aren't configuring the radio for the best
decode. Here's something I wrote some months earlier. It might prove
worthwhile in your case. Of course not knowing what bands and your
noise conditions is something you'll have to judge for yourself. You
may need to
Depends. If you have a stiff 120 V service from the breaker panel, a
service that doesn't loop through other outlets, specially the ones that
use the push in the wire type connections, then the KPA500 will run OK
on 120 volts. If you have other stuff on that circuit, or have the
maximum
Someone suggested performing 2 tone tests. Seems reasonable.
I tried that with my K3S into a dummy load and an a RF sample fed to my
RSP1 receiver using HDSDR software. I find that it does indeed
display the IMD products from the 2 tones. I now need to study the
results a bit more to
When the farmer plows up the ground field in the Spring! Gr
73
Bob, K4TAX
On 12/18/2018 12:00 PM, Lynn W. Taylor, WB6UUT wrote:
How often does the match change at a well-engineered broadcast station?
On 12/18/2018 9:47 AM, W2xj wrote:
That’s why we have adjustable antenna tuners. Same
But usually they have only 2 or 3 switched frequencies. They also switch
directions, sometimes on different frequencies. All of these conditions are
known and networks are pre set for the required combination.
Bob, K4TAX
Sent from my iPhone
> On Dec 18, 2018, at 12:35 PM, W2xj wrote:
>
>
WOW! 12 towers. I've only worked with a 3 tower directional array
that was switched between 2 frequencies and 4 different patterns. A
small 100 KW shortwave transmitter and it too switched between the 2
frequencies. Flip the switch and hope that the TX quenched as it
should, all
The Johnson Matchbox configuration is indeed a banpass filter meaning it
attenuates both above and below the frequency to which it is tuned. I
use mine at Field Day to provide attenuation to stations operating both
above and below the band being used. The amount of attenuation does
vary as
I find the 500 Hz 5 pole filter works very satisfactory for this purpose.
73
Bob, K4TAX
On 12/23/2018 6:54 AM, Victor Rosenthal 4X6GP wrote:
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Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help:
Be sure the wire is LCOF copper. The electrons are reported to move
faster and with less resistance in that medium. This makes your signal
get to the DX station faster than anyone else . HA HA HA
Seriously folks, to evaluate the insulation on the zip cord or speaker
wire, my method is
Yes while true, however the DSP doesn't take the place of or perform
the function of a roofing filter.
73
Bob, K4TAX
On 12/23/2018 11:13 AM, Roger D Johnson wrote:
I can vary the selectivity from 2800 to 50 Hz with the width knob.
73, Roger
Sounds like RF getting into the audio amps of the speakers. May require
ferrite beads with a couple of turns thorough the beads on the audio and power
cables.
Bob, K4TAX
Sent from my iPhone
> On Dec 22, 2018, at 3:59 PM, Mark Wheeler via Elecraft
> wrote:
>
> While the K3S is in the
>> distortion, no RF even when driving the KPA500 with the KX3.
>>
>>
>> Michael Blake
>> k9...@mac.com <mailto:k9...@icloud.com>
>>
>>
>>
>>
>>
>>
>>> On Dec 22, 2018, at 5:08 PM, Bob McGraw K4TAX wrote:
Just made a quick sweep of my K3S in DATA A mode, no EQ, No SP, and find
that it will pass 70 Hz with little to no attenuation. On the high end
it will pass 3000 Hz but greatly attenuates 3100 Hz. This is done with
the stock filter of 2.7 kHz.
At this point in time, I don't have a suitable
that much.
Thanks and 73!
Harv
K2PI
-Original Message-----
From: Bob McGraw K4TAX [mailto:rmcg...@blomand.net]
Sent: Wednesday, December 19, 2018 10:43 AM
To: Gadget Lust
Cc: donw...@embarqmail.com
Subject: Re: [Elecraft] k3 High Current Message on 10 meters
Harv:
Per the manual the t
Just went through the setup for WSPR on 160M - 6M for my station, K3S,
KAT500, etc. I have the KAT500 in MAN mode and it switches bands
correctly. I didn't see any issues at 5 watts transmit.
Why is it re-tuning? Are you operating the KAT500 in the AUTO mode?
Just go through each
John et al:
With my KPA500 and SSB rag chews I keep the fan on NORMAL. It does
cycle on and up from time to time. When operating digital modes at 400
to 500 watts, I set the fan to 1. It still does move to higher speeds
during transmissions as the TEMP gets to 60 degrees or so. Then
What happened to using a Simpson 260 or 270 or Triplet 603? Those are
actually better for finding a peak or null, which in both cases are only
relative. If one works on HV amps as I do from time to time, you'll
find the life of a DVM to be zap.
73
Bob, K4TAX
On 11/30/2018 11:54
In checking my K3S into an antenna that presents a 2:1 SWR as indicated
on my external Power/SWR meter, my KPA500 in STBY, and my KAT500 in
bypass mode, it does deliver 100 watts. Although, I prefer not to
operate in that configuration if not necessary.
I think in general we fret too much
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