Using the K3 Utility be sure the filters and modes are correctly
selected. For AM you will need either the 6 kHz or 13 kHz active and
set one of those for AM mode for TX and RX.
73
Bob, K4TAX
On 8/31/2019 8:13 PM, Rick Robinson wrote:
Sounds like the AM mode has been disabled in the menu.
My KPA500 runs from a low of 35% to a high of 55% depending on power.
Lower power is least efficient. Thus I always run close or at maximum
rated power. Also the load impedance will affect efficiency.
73
Bob, K4TAX
On 8/29/2019 2:04 PM, John Simmons wrote:
No one has mentioned
Has anyone collected IMD data on the different version of KPA3A amps?
I seem to recall measuring IMD when I first got my K3S, s/n 10163.
Since that time I' have experienced 2 failures of the KPA3A in my
radio. Elecraft replaced the last one with a newer "more stable"
version. I do run
Equalizers introduce phase shift. Even the very best ones do that.
Thus for a phase shift audio signal, either transmitted or received, use
of any EQ can and will introduce phase shift in the audio path. It is
not at all advisable to have this occur with digital signals.
It is highly
I find a lot of the opposite sideband splatter is originated from
mis-tuned amplifiers or amplifiers which are driven too hard. If it
isn't "linear" it is a splatter generator. And linear means just
that, linear. For an amp to be linear, it must amplify all signal
levels the same amount.
We've made great technical strides in receivers. Transmitters, well
they are best described still as "out house" technology. Nothing has
changed of significance in 25+ years. In looking at my P3 and SSB
signals on the bands, there are lots and lots of really bad signals.
Yet I most
Does this also work the same for the KAT500? I've not tried it.
Bob, K4TAX
Sent from my iPhone
> On Aug 28, 2019, at 5:56 PM, HB via Elecraft wrote:
>
> Me too!!
>
>> On Aug 28, 2019, at 5:32 PM, Jay Rutherford wrote:
>>
>> Ordered mine!
>>
>>> On Wed, Aug 28, 2019, at 16:40,
N.S.
I typically run my KPA500 fan on #1 when operating FT-8. It will ramp
up to #3 when the temp reaches 60°C and during extended exchanges, but
quickly ramps back down to #2. I don't find this at all
objectionable. I've never seen the TEMP above 60°C or so. And at
#1 the fan
I'm keeping my K3S.I'll decide on a K4 next year.
Bob, K4TAX
Sent from my iPhone
> On Aug 26, 2019, at 5:33 PM, Charlie T wrote:
>
> Obviously, a lot of us are dumping our K3's (plural) & K3S' (also plural) as
> their prices have fallen through the floor with the introduction of the
As I've read earlier, likely an issue with the T/R switching diodes in
the amp. Contact Tech Support at Elecraft.
73
Bob, K4TAX
On 8/25/2019 8:17 AM, Mike Sanders wrote:
Probably a cable mess up on my part. Before I go through heroic
efforts to
move the operating desk can anyone offer
Has anyone actually used, observed, and measured the effect of the ALC
feature of the amp in combination with the K3/K3S with regard to output
power variation.
I do use the method and setup as suggested in the manual for both the
KPA500 and K3S with no known ill effects. The amp drives to
Well I must admit I learned something new and I was not correct in
stating the KAT500 followed the RX frequency. I normally never have
the RX and TX more than 1 kHz or less apart and rarely use RIT. Hence,
when I change the RX I'm also changing the TX and the KAT500 follows.
I did confirm
Yes and the most issues I encounter in assisting other hams is that they
DO NOT read the manuals. They take the approach "aw heck, I know how
that works". Well that is just downright wrong. Look at the
questions asked and issues presented and just how many of those are or
can be answered
Train the tuner at closer frequency intervals on the band and antenna. I use
25kHz on 160M & 80M across the entire band. Then 50kHz on all other bands.
Bob, K4TAX
Sent from my iPhone
> On Aug 21, 2019, at 7:48 PM, Robert Cunnings wrote:
>
> Yes, I don't like the way the KAT500 follows
-
From: elecraft-boun...@mailman.qth.net On
Behalf Of Bob McGraw K4TAX
Sent: Tuesday, August 20, 2019 21:11
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KPA500 Coax size requirements
Because in the manual, page 4, item 2 states "Connect to the station 11 to 15 VDC
power s
or 5 years.
Necessary because the tuners and the amps were remoted in a closet 20 feet from
the operating desk. No problems.
Ken K6MR
From: elecraft-boun...@mailman.qth.net on behalf
of Bob McGraw K4TAX
Sent: Tuesday, August 20, 2019 12:59:11 PM
To
Carter:
The KAT500 can be {should be} powered from the radio 12V supply. I
don't suggest a separate wall wart.
The KPA500 can be powered from either 120VAC or 240VAC, your choice. It
should drive on all bands with 20 to 30 watts output from the K2 to
reach full 500 watts output from the
I'd suggest using RIG for SPLIT mode. This takes care of any issues of concern
Bob, K4TAX
Sent from my iPhone
> On Aug 19, 2019, at 5:23 AM, MaverickNH wrote:
>
> I'm using a KX2/KXPA100 at 40W on a Win10 laptop with WSJT-X 2.1.0 for FT8.
> Antenna is a G5RV at 40ft with base ATU 150ft
First depends on the version of FLFIGI. I use v4.0.5
With that I choose K3/KX3 Beta as the radio from the HamLib. 38400 baud,
1 stop. I do not have DTR or DTS checked. With my configuration I end
up with COM 5.
All works great with these values.
73
Bob, K4TAX
On 8/13/2019 8:14 PM,
From my take, the radio is in transmit mode, the ALC is showing 1 bar
and stuck in transmit. This to me says there is noise coming out of the
computer, even though WSJT-X is given the receive command. Somewhere
in this post I read that the OP reducing the computer slider eliminated
the
See XNn OFS on page 68 of the manual. This compensates fro
oscillator/multiplier errors.
73
Bob, K4TAX
On 8/9/2019 7:55 AM, Greg Troxel wrote:
John Stengrevics writes:
I have followed the calibration procedure in the manual (WWV as I
don’t have a frequency generator). On 50 MHz, I am
Just seen on E-Bay. Wow that's some mark-up!
73
Bob, K4TAX
From another source. F Y I --
73
Bob, K4TAX
An article by two well-known radio amateurs, “Tuning
Electrically Short Antennas for Field Operation,” appeared in
Microwave Journal. Authored by QEX Editor Kai Siwiak, KE4PT,
and award-winning researcher Ulrich
Harry:
Are these values on a dummy load or feeding the KAT500 or antenna direct?
I just quickly checked my KPA500 into a dummy load at 500 watts output.
The currents run from 14.0A on 20M to a low of 11.5A depending on
band. This is done with 500 watts output as shown on my Bird 43 and
Just curious on my part, with my K3S I ran FT-8 for about an hour making
1 contact after another on 20M. Power output was set to100 watts
although the external powers meters (2 different ones) show a bit more
than 100 watts. Started with PA temperature at 36°C and never saw it
go over
F Y I - I pass along from another source.
73
Bob, K4TAX
I am beginning, rather belatedly, to understand the source of the many
users reporting low Tx audio levels with the 64-bit MS Windows version
of WSJT-X. I stated above that "Pwr" slider in WSJT-X directly controls
the Windows audio
Is there an ATU involved? If so , the TX signal and RX signal are then common
to the path through the ATU.
I don't think the RX signal goes through the 100W PA.
Also consider the antenna port switching. That is common to both RX and TX
signal paths.
Bob, K4TAX
Sent from my iPhone
> On
Just shows HOW IMPORTANT keeping a current back-up file becomes. Glad
that resolved the issue.
73
Bob, K4TAX
On 7/27/2019 8:23 AM, Mpridesti via Elecraft wrote:
Although I was unable to exactly determine the source of failure, by using the
Restore K3 Configuration button and use a
Just checked my K3S and P3 using WWV 5.0 MHz and 15.0MHz. The error
indicated on the radio is 1 to 2 Hz low. The P3 is correct for both
frequencies with a Ref Cal value of -55 for both frequencies.
My K3S calibration method uses CW mode, with CWT active and press SPOT.
That will zero the
First make sure the radio is correct on all WWV frequencies. I use CW mode
and Auto Spot. That will get to within 2 Hz or better. Adjust the Ref freq to
calibrate.
Then you can calibrate the P3 to the radio.
No tuning or listening for zero beat required.
Bob, K4TAX
Sent from my iPhone
ure. You can precisely calculate power.
>
> Sent from my iPad
>
>> On Jul 23, 2019, at 9:38 AM, Bob McGraw K4TAX wrote:
>>
>> Since power meter systems are calibrated at a known impedance {usually 50
>> ohms}, and they are voltage sensing devices, any deviation
Since power meter systems are calibrated at a known impedance {usually
50 ohms}, and they are voltage sensing devices, any deviation from the
calibration value will introduce an error in power indication. It just
depends on how precise one prefers to be with power measurements.
100 watts
I agree that Bird dummy loads are some of the best. Be sure to get one rated
for at least your maximum power anticipated. And do allow a margin of safety.
I use 2x, thus for 100 watts I use a 250 watt rated load.
I purchase all of my power measurement equipment from NM3E.COM.
Bob, K4TAX
I used a RSP-1 {SDR Play} on the IF output of my K3S before I purchased
my P3. I used HDSDR and OmniRig as the controlling software. I was
very pleased with its performance, ease of use, and ease of configuration.
73
Bob, K4TAX
On 7/22/2019 8:31 AM, Conrad PA5Y wrote:
Hi Raj the
I agree with Don and Joe. One of my radios some 10 years ago had the
feature. It could be turned on or off. Yet some really didn't like it
and some thought it was the best thing since sliced bread. To me, my
K3S in its present configuration fits ALL of my needs.
73
Bob, K4TAX
On
Here is the link to the app that I use. Take the FREE download.
https://www.ccleaner.com/ccleaner/download
73
Bob, K4TAX
On 7/20/2019 10:18 AM, Clay Autery wrote:
THIS!
jv16.org < The Registry Cleaner, et al. that I use.
__
Clay Autery, KY5G
(318) 518-1389
I would first reboot the computer a couple of times. Then go to the
Windows Update application and run it. Take all the defaults and let it
"do its thing". A failed update will leave lots of fragments and crap
in the computer.
Also I suggest, as I do, run an application that gets rid of
Yes as I wrote earlier there are 3 places which are "in series" if you
will, that affect the audio level to the radio. In order: (a) Windows
SPKR level. (b) WSJT-X PWR slider, (c) K3S Line Gain.
I don't know anything about TX audio processing changes and I don't find
it a challenge or any
What is the Line gain on the radio?
My values:
For transmit:
Computer SPKR level @ 30 or -18 dB
WSJT-X PWR at mid scale, thus Transmit Digital Gain is -17.3 dB
K3S Line gain at 25.
For receive:
Microphone (USB Audio CODEC) = @ 27 or -10 dB
K3S Line Out = Normal 010
These values
.1. is good enough for me.
>
>
> - pjd
>
> -----Original Message-
> From: Bob McGraw K4TAX
> Sent: Tuesday, July 16, 2019 7:24 PM
> To: elecraft@mailman.qth.net; li...@w2irt.net >> Peter Dougherty
>
> Subject: Re: [Elecraft] FT8 TX levels = no power
>
Peter:
In that configuration there are 3 specific places where adjustments are
needed for transmit levels. Left click on the SPKR icon in the lower
right side of the computer display. Set that slider to a value between
30 and 50. That controls the transmit audio via the software. And
First, how have you determined that you will need EQ for AM? With the
stock SSB filter you won't get AM to sound good. And with the 6 kHz AM
filter, that depends largely on the type of mike being used and your
mike technique. I use the same mike and mike technique and EQ for SSB
as I do
Don't confuse compression and clipping. Compression reduces dynamic range
while clipping sets a hard ceiling and does generate distortion. Compression
used correctly does not generate distortion.
73
Bob, K4TAX
Sent from my iPhone
> On Jul 12, 2019, at 4:00 PM, Wes wrote:
>
> What
It is silver sulfide {tarnish} which is semiconductor and will therefore
conduct electricity, but will reduce the surface conductivity. To what
extent will depend on the thickness of the tarnish. Surface tarnish
will not affect bulk conductivity unless the "bulk" thickness is very
thin.
These cables, like many cables with connectors will accrue connector
oxidation. Often the oxidation is such that it prevents a very low
level signal from passing. The solution for many instances is simply
to clean connectors.
My approach is to use a Q-Tip, apply your favorite contact
I did look at the parameters of my KPA500 this morning. In STBY the HV
is 75.4 and in OPER at 500 watts out, CW mode, key closed the HV is 63.7
and current is 10.5 amps. Amp is operated from a 240 volt source.
73
Bob, K4TAX
On 7/7/2019 6:20 AM, Mark Murray via Elecraft wrote:
For Doug,
I would remove Microham and connect the USB cable directly from the radio to
the computer. Then set the audio CODEC as found under the Setup menu of
WSJT-X.
The SPKR level on the computer should be about 30%, the PWR slider on WSJT
about 50% and the K3S Line Gain at 25 to 30. This should
A bandpass filter is designed for optimum rejection and pass frequencies
only when operated at 50 ohms. Thus both ends of the filter need to see
50 ohms. If the antenna has a SWR issue, no matter how small, it is not
likely 50 ohms. And if one uses the transceiver internal ATU to the
input
Make sure you balance the station receive performance with that of the 1
KW amp. Power is easy to generate. Low noise receive performance is
a challenge. Start with a mast mounted low noise preamp, then low loss
feedline such as 7/8" hard-line, and such. Remember, loss in the
feedline
These are available and are adequate for general ham radio use. They are
$10.21 each + $3.50 shipping. Worth having just to look at.
First, check all power connections. And if your radio is powered
through a DC distribution strip, my suggestion is to not use the strip
for the radio power. In other words, connect the radio power cable
direct to the power supply. Also shorten the power cable to be more
convenient and
I've found that all USB cables are not created equal. Some are
apparently better shielded than others. I tried and replaced 3 or 4
different ones / brands / lengths, in the same location and
configuration {between my K3S and my laptop} before I found one that did
not cause the WSJT-X
A clue. at 500 watts with the KPA500 there is an issue. At 50 watts
using just the K3 there is no reported issue. What's the difference?
RF field strength. Sounds like it might be and RFI issue.
Check all PL-259's and make sure they are VERY TIGHT. Check jumper
cables, between each
Sounds like the power from the K3 is too high. Should be about 25 or
so watts. Actually, 20 watts drives my KPA500 to 500 watts output on
all bands. I trust the SWR as seen by the amplifier is 1.5:1 or less.
Do you get any FAULT LED indications on the KPA500? You can use the
KPA500
EXACTLY!
73
Bob, K4TAX
On 7/1/2019 4:35 PM, Don Wilhelm wrote:
Bill,
That is quite generous of you, and all those who provide public domain
code.
Each of those software packages you mention run on a computer, and are
a complete package within itself. That is different than a situation
Oh my. It seems that folks keep designing good stuff, circuits,
software,radios and the like, and for economic reasons end up with
Chinese manufacturing some of the boards or assemblies. It doesn't
take them long to figure out what makes it tick and end up with a clone
available at 1/2
Since it is only to be used not mobile, I would not add a fuse to the
power cord. It only adds a few tenths ohms but it still is added R
that isn't needed.
As to ICOM, any radio that is used mobile should be fused in the DC Pos
and DC Neg leads.
73
Bob, K4TAX
On 7/1/2019 3:45 AM, David
Well written generic paper for operation of FT-8 and other digital
signals of like mode. It does not totally nor correctly apply to
Elecraft radios as power management is handled by a totally different
means. And those means and methods suggested in this paper are not
applicable to
Indian Chief said; "White man stupid. Thinks he can cut 12" off of
one end of his blanket, sew it on the other end, and have a longer blanket".
73
Bob, K4TAX
On 6/27/2019 3:26 PM, Logan R Zintsmaster wrote:
Amateur astronomers refer to Advanced Time as Darkness Wasting Time.
Logan,
Some years ago when operating HF packet in S. FL., I built an antenna
switching arrangement which would take the error signal from my PK-232,
count the errors and at some point switch to the other antenna. One
antenna was an 80M inverted V, the other was a Butternut vertical
mounted over a
If you run the K3 Utility and the KPA500 Utility, download the latest
from Elecraft and install same. Also while you have those utilities up
and running, do a back-up of each. The current version for the
KPA500 is 1.54 and for the K3S is 5.67 for the MCU. I'd say both of
your items are
(pulsating). I always felt there was something intermittent but now I
know. The issue is simply where I chose to test. I'd have never
figured that out.
Thanks and 73!
Kev N4TT
On Tue, Jun 25, 2019 at 4:17 PM Bob McGraw K4TAX <mailto:rmcg...@blomand.net>> wrote:
The pulsating is t
The pulsating is the result of the refresh rate of the display and the
1500 Hz tone. Change the TUNE tone to a non- 500 Hz interval such as
1250 Hz. or 1700 HZ as such. Yes, in FLDIGI the TUNE tone is a single
frequency you have selected on the waterfall scale or in the box at the
bottom of
2019, at 3:12 PM, Bob McGraw K4TAX wrote:
You can find the latest version {2.0.1} of WSJT-X here:
<https://www.physics.princeton.edu/pulsar/K1JT/>
https://www.physics.princeton.edu/pulsar/K1JT/
<https://www.physics.princeton.edu/pulsar/K1JT/>
<https://www.physics.princeton.edu/pu
==
On Jun 25, 2019, at 12:48 PM, Bob McGraw K4TAX wrote:
The WSJT-X software does have a provision for the correct Field Day exchange
found under the Advanced tab. I worked several stations on FT-8 and also on
FT-4 with the latest version.Most activity was on FT-8 of which a lo
The WSJT-X software does have a provision for the correct Field Day
exchange found under the Advanced tab. I worked several stations on
FT-8 and also on FT-4 with the latest version. Most activity was on
FT-8 of which a lot was found on 6M. There are a few issues with RC-7
for FT-4.
There is w too much of that on the air today. I'll be glad to
see the day in which Riley Hollingsworth gets the VM program up and
running.
73
Bob, K4TAX
On 6/24/2019 1:59 PM, Ken G Kopp wrote:
Such offensive behavior is an age-old ploy to maintain a clear frequency,
especially
I respectfully disagree on Drake receivers and EF Johnson transmitters
as boat anchors. My finding is there no suitable place on either one
to which one can attach a length of rope, hence becoming an anchor
line. Therefore, neither are considered to be a boat anchor.
73
Bob, K4TAX
On
To evaluate speech use a pink noise source. That is the standard source signal
for acoustic measurements.
Bob, K4TAX
Sent from my iPhone
> On Jun 20, 2019, at 10:34 AM, John Oppenheimer wrote:
>
> Hi Don,
>
>> On 6/20/19 9:21 AM, Don Wilhelm wrote:
>> John,
>>
>> That connection is OK
Here is a paper on the topic. This covers the correct procedure.
http://www.eng.auburn.edu/~troppel/courses/TIMS-manuals-r5/TIMS%20Experiment%20Manuals/Student_Text/Vol-A1/a1-12.pdf
73
Bob, K4TAX
Sent from my iPhone
> On Jun 20, 2019, at 8:38 AM, John Oppenheimer wrote:
>
> Using DL1 with
Perhaps you have a recent configuration backup. Load that into your K3.
Should get you back to a working radio.
Bob, K4TAX
Sent from my iPhone
> On Jun 18, 2019, at 12:19 PM, Jim Rhodes wrote:
>
> OK, I have done some fat fingered thing to my K3. For years I have been
> running RTTY in
Kev:
First the ALC indication should be, no must be, 4 bars solid and the
5th bar flickering. To monitor your signal, use the MON function of
the K3S. It should sound VERY clean. If there is buzz, growl, humm or
anything besides pure tone, there are issues to be resolved. Check all
/2019 6:04 PM, Bob McGraw K4TAX wrote:
Also if you use your computer for other "sound" activities, any
change made from that activity may or will change other
things. Just understand how things works and expect to quickly
be able to make adjustments with good understanding as to why
The company for which I previously worked designed and built recording
studio consoles. In order to eek out every bit of noise, that is
achieve the lowest noise floor, it was necessary to crimp and then
solder the lugs on the power supply cables on both ends. Crimping was
only OK and was
As I've written in the past, there are 3 places which affect the audio
levels. As a good rule, all three need to be adjusted and all about
the same value. Thus the computer SPKR level needs to be about 30% to
40%, the WSJT-X PWR slider about 30% to 40% and the radio line gain
about 30%
You need to back down the level out of the computer. Also the PWR level in the
software, which is actually audio level , needs to be backed down. This
should allow you to run the Line Gain at 25 to 35. Never run any of the
controls or levels at maximum or near minimum. Mid range is best
From a source and a friend of mine, KE4PT.
F Y I -
{quote}
In article by two well-known radio amateurs, “Tuning Electrically Short
Antennas for Field Operation,” appeared in Microwave Journal. Authored by QEX
Editor Kai Siwiak, KE4PT, and award-winning researcher Ulrich Rohde, N1UL, the
couldn’t operate CW on the same band even
though there was no problem caused by his SSB signal.
Victor 4X6GP
On 14 Jun 2019, at 20:52, Bob McGraw K4TAX wrote:
So was the issue the result of poor shielding and connectors of cables inside
the trailer or actual antenna separation? That would do
multiple HF transmitters simultaneously its wise to:
- avoid multi-band antennas, or
- use external bandpass filters, or even better
- avoid multi-band antennas and use bandpass filters
73
Frank
W3LPL
- Original Message -
From: "Bob McGraw K4TAX"
To: donov...@starpower.net
Cc
Very good info to know. Thanks for sharing.
73
Bob, K4TAX
Sent from my iPhone
> On Jun 14, 2019, at 5:58 PM, Wes wrote:
>
> In an earlier post I asked for help from the collective wisdom of this group.
> In response I received a lot, some via the reflector, some privately. I
> would
David et al;
My statement is almost word for word from the Elecraft K3 manual. And
some from work done by Art Collins and company at Collins Radio. They
prescribed the function of a Noise Blanker as follows:
"The following operational requirements were kept in mind:
1. Reduction of
e wanted to make any contacts. It took three
steps of backing down his gain to get him to reasonable copy. He was
over 10 db weaker but suddenly started running stations.
Cranking the knob to 11 is, as you say, totally counterproductive.
73,
Dave AB7E
On 6/14/2019 10:52 AM, Bob McGraw K4
we
> (CW) were obliged to share a trailer.
>
> I tried a TRP-150 for the first time on the air this morning and a station in
> Michigan detected no clicks, truncating, or other aberrations.
>
> We'll see.
>
> 73,
>
> Kent K9ZTV
>
>
>
>
>
>&
that K3 transceivers have built in bandpass
> filters. As far as I'm aware their performance characteristics have
> never been published, hence our preference to also also use external
> bandpass filters.
>
>
> 73
> Frank
> W3LPL
>
>
>
>
>
>From experience, I find running any audio level at 100% is usually an
>indication that the levels throughout the "system" are not correctly balanced.
>
With my version of Windows 10 Pro the SPKR level runs 30% to 35%. With the
radio and or the Signalink the PWR slider on WSJT-X is 50 to 60%
With stations running 100 watts or less and reasonable antenna
separation, I've found no reason for a Receiver Input Protector.
Although, it might be a good idea to circumvent a "screw up" by an
operator. I've seen some mighty strange things done by knowledgeable
hams at Field Day.
73
I just completed update of this Windows 10 Pro system, 1809 update.
Checked to see if WSJT-X communicated between the computer and radio and
find all is well. No issues, sound card both ways is correct and with
my K3S works as it should. I didn't have to change anything. Also
checked
The Noise Blanker only affects repetitive pulse noise such as ignition
type noise. Lightning and atmospheric is random noise. As to the Noise
Reduction, I find that use of the Attenuation and RF Gain control is far
superior to using DSP systems. Also remember it is Noise Reduction and
not
Regarding "heavy gauge wire", I suggest one measure the voltage drop
using a DVM connected direct between the power supply Pos terminal and
the radio Pos terminal. Likewise do the same for the Neg DC line.
Put the radio in CW mode and close the key for rated output. If one
finds more
I run WSJT-X V2.xxx with my K3S and have no issues with other applications,
port sharing as such. Only use one USB cable between the radio and computer.
I've found the more applications one runs, then one WILL have more problems.
Thus the question "has one made their system overly complex?"
I've found a good source for power supply wire for the DC connections.
Automotive primary wire, #10 AWG. This wire is made using many small
strands which make it very flexible. Various colors are available. I
use Red {DC Pos}, Black {DC Neg} and White {equipment bonding wire}.
Also I
Gerry:
Thanks for reporting your findings and correction. It seems so many
folks will post a question, receive an answer and solution, and are
never heard from again. Sharing makes us all better informed.
73
Bob, K4TAX
On 6/11/2019 8:16 PM, Gerry Miller wrote:
I WANT TO THANK YOU
The Signalink USB has a monitor jack. Thus one can plug in headphones on the
back of the unit. And using a 0.1 cap in place of the internal jumper in the
unit eliminates the need to turn off bias.
Seems all of your concerns are resolved.
Bob, K4TAX
Sent from my iPhone
> On Jun 9, 2019,
I've been running Window 10 Pro since the initial release. I am very
pleased with it in all aspects. Yes, I did have a learning curve
initially, but I've found every piece of software and hardware runs
flawlessly. Most of the issues were my lack of knowledge and
understanding on how
I find Mark's point very important. Obtain and use a supply which is
more than adequate for the service or load. Thus a 25 amp supply
feeding a radio drawing 20+ amps will need lots of cooling. This is
not the way to do it. Get a 50 amp supply for a radio drawing 20+ amps
and the fan(s)
I'm using an Astron SS-30M with very satisfactory results.
73
Bob, K4TAX
Sent from my iPhone
> On Jun 9, 2019, at 9:52 AM, Peter Dougherty wrote:
>
> Hi all,
> I would like to find a power supply to power the K3s that is completely
> silent. I've owned an Astron RS-35M, which was great
Yes, yes, and yes. One can download the Receiver Test Report and
import it into an EXCEL file. That will then allow one to sort on 1 or
2 or 3 or more different criteria.
The 2 kHz Narrow Spaced number, to me, is not as important as some other
numbers. It is nice to have a radio, K3S,
I noticed when working the 6M contest today, I observed a band of noise
on my P3. It always tracks above the frequency about 20kHz at the
lower edge. The width of the band of noise is about 35 kHz. As I
tune, the band of noise stays relative to the tuned frequency, thus
moving up or down
I can't emphasize this enough. BACKUP BACKUP BACKUP the configuration
on a regular basis using the K3 Utility. When things get screwy and
weird, one has a way to step back to "when things worked". Much like
the RESTORE feature on the computer. The K3 Utility makes this easy
to do
If you look at the jumper configuration in Fig 2 & 3 of the Signalink
USB documentation, you can insert the capacitor, in place of the
jumper, between the MIC pin on JP1 and the corresponding Mic Input
terminal on JP1. A 0.1 mfd 50 V disk ceramic should be very
adequate. That will block
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