ings wrong in the past however.
73,
Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County
Bob McGraw wrote on 4/6/2024 8:50 AM:
Just to be clear on the point. The correct audio level should
produce 4 bars indicated on the ALC Scale. Actual ALC action does
not start until after the 5th bar.
Just to be clear on the point. The correct audio level should produce 4
bars indicated on the ALC Scale. Actual ALC action does not start until
after the 5th bar.
Yes, after any power adjustment, the audio system does start at lower
gain, quickly ramping to the desired level. This is done
Did the fault occur immediately after a band change? I occasionally see
a slight power overshoot from my K3S on the first transmission after a
band change. Perhaps a transmit gain calibration is in order. I use
the K3 Utility for this purpose and a known good 50 ohm dummy load.
The
THANKS for posting the result and efforts which took place to get you up
and running. I hope you enjoy your K3S as much as I've enjoyed mine.
73
Bob, K4TAX
Message: 18
Date: Sat, 23 Mar 2024 16:49:27 -0400
From: Carol Richards
To:elecraft@mailman.qth.net
Subject: [Elecraft] K3s
From your description, something in the antenna system, coax,
connector, balun, antenna is heating and changing value. I doubt it is
the radio, or the amplifier, or the tuner.
That antenna is rated at 250 watts PEP. Sure bet you are exceeding the
power rating with the KPA500 running.
73
F Y I --
When one sends an e-mail to multiple persons or addresses, PLEASE use
the BCC address line for the distribution. Do send the message TO
yourself. This minimizes the ability to clone or copy e-mail
addresses. By avoiding visible e-mail addresses it is much more
difficult to build
I disagree. There is the knowledge base which is likely missing. Not
to mention unique test fixtures and spare parts required. Spare parts
means inventory of replacement boards. One can not effectively or
economically do component level troubleshooting with these radios. It
is less
I can totally agree with Joe, W4TV. At one time I was repairing radios
for various companies. I was doing warranty and non-warranty repairs.
The companies decided it was cost ineffective to maintain independent
repair services. Hence, I no longer repair radios, and no longer have
test
The KPA500 at the station only matches the transmitter to the
transmission line and likewise for the receiver. It does not change
the match between the antenna and transmission line, thus the SWR and
related loss from SWR remains.
73
Bob, K4TAX
On 12/4/2023 8:07 AM,
I use an external VHF amp with my transverter. Works great! Do be
mindful of the amp switching time. The relay switching time is about 15
ms. I prefer to use hardwire PTT as opposed to using RF detection to
switch the amp.
73
Bob, K4TAX
On 12/4/2023 8:07 AM,
There are many very nice, well filtered, well regulated power supplies
on the market. I see NO REASON for using anything other than the
station power supply to power all accessories. As to plant lights,
use a separate power supply and not the piece of junk supplied with them.
I have and
Just power it from the transceiver power supply and all will be
resolved. There is no point in making life complex.
73
Bob, K4TAX
On 12/3/2023 9:52 AM, elecraft-requ...@mailman.qth.net wrote:
Message: 8
Date: Sun, 3 Dec 2023 01:48:45 +
From: W2HX
To: Michael Carter, Elecraft Reflector
The complete FT-8 cycle is 30 seconds of which 12.63 seconds is the
actual transmitting period. Therefore (12.63/30)*100 = 42.1%.
As to backing down the power, the measured performance on my KPA500
indicates the highest dissipation does occur at lower power levels. On
20M at 500 watts
Not only does one have to return the QSL cards, but they must turn in
their EXTRA Class license for a Technician Class license.
73
Bob, K4TAX
On 11/6/2023 2:36 PM, elecraft-requ...@mailman.qth.net wrote:
I wonder how I can work split then on my K3/10 without a 2nd RX...do I have
to return
SPLIT operation is easily accomplished with a single receiver K3S. Five
easy steps follows:
1. Select the band, frequency and mode of your choice as seen on VFO A.
(that's the big knob)
2. Press and release A > B button. This sets VFO A and VFO B to the
same band, frequency and mode.
If I did my math correct, FT-8 is 46.42% duty cycle. 13+15 = 28.
Therefore (13/28)*100= 46.42%
73
Bob, K4TAX
On 10/12/2023 7:33 AM, elecraft-requ...@mailman.qth.net wrote:
Message: 17 Date: Wed, 11 Oct 2023 21:40:19 -0700 From: David Gilbert
To: elecraft@mailman.qth.net Subject: Re:
Ken et al:
From the K3S manual, page 8, I find: "Duty Cycle CW and SSB modes,
100% 10 minutes key-down at 25 degrees C. There are some additions
restrictions for 6 meters. This does not seem to agree with the
information of W1HKJ.
I've been regularly running my K3S, s/n 10163 since
Andy:
With my K3S station I use the AUX cable system between the K3S connected
to the KAT500 and then connected from the KAT500 to the KPA500. No
interrupter is needed. The AUX lines handles the proper control for
the tuner and the amp. I do NOT use the Key Line cables, sometimes
called
Ken:
I have a K3S with the internal tuner. I find no issues nor concerns in
running 100 watts in any mode. Page 79 of the manual does not address
any reduced power requirement other than operating with a 20:1 SWR (20
watts).
73
Bob, K4TAX
On 10/12/2023 7:33 AM,
Glenn:
In the KAT500 manual, page 5. Figure 1 Cabling Diagram is the better way
to connect the items. It does not use the key line interrupt. That is
the configuration which I have used, very successfully, for years.
In the K3S, set the MENU for 20 watts TUNE power, and from the CONFIG
Be sure the wiring is correct as to the XLR 3 and the Foster 8 pin
connector.
XLR pin #1 to Foster pin #8
XLR pin #2 to Foster pin #1
XLR pin #3 to Foster pin #7
Be sure in the Config menu, FP.H source is selected and Bias is OFF.
See page 13 in the manual.
I use a Behringer XM8500 or
I have the Koss SB-45. Works great and sounds good both ways although I
don't normally use a headset. I do find, as I recall, it has a dynamic
mike element and does exhibit a good amount of proximity effect. Uh,
maybe that is the SB-40. One is dynamic and one is electrect. ???
73
Bob,
Fred is absolutely correct on this point. The NEC {National Electrical
Code} clearly states that all driven grounds MUST be bonded to the AC
mains service entrance ground. There is NO exception to this
procedure. An exception does exist when the structure is XX number of
feet distant from
No such thing as a dumb question about lightning. I spent 15 years in
South Florida. I've seen some lightning! Welcome to KY. I'm in
middle TN and do understand lightning.
The ARRL publication by Ward Silver, Grounding and Bonding for the
Amateur, is about the best compilation available
Whereas it was written: "The manufacturer says use 5 bars of ALC, end
of story. I don't buy that at all." (W3IP)
The manufacturer DOES NOT say use 5 bars of ALC. However, it does say
use 4 bars of audio as displayed on the ALC scale and the 5th bar
flickering. This is per the writer of
Oh my goodness!
What Don, W3FPR wrote is 100% correct!
Whomever K3 user told you to EVER use the output control other than MAX at ALL
TIMES needs to go back to learning. They are NOT helping you. (NK7I)
I'd go back to what Elecraft says in their manual. (K9YC)
Again, READ THE K3 OWNERS
AMEN Just keep on keeping on.
73
Bob, K4TAX
On 7/18/2023 11:43 AM, elecraft-requ...@mailman.qth.net wrote:
Good grief.? Get a life.? Not everything in this world is racist, discriminatory
or homophobic. In fact, I'm old enough to remember when being discriminating was
a virtue, a sign of
Folks, if you intend to operate ANY digital mode for Field Day or any
other day for that matter, please read the radio manual with regard to
passing audio from the computer to the radio and learn the radio
adjustments and what they do and how they are used. Also read the manual
regarding
Regarding "quick on the fly adjustments", I don't view an 8 band EQ as
one that would have quick on the fly adjustments.
Depending on your choice of sidetone frequency, the selection of RX EQ
frequency and amount of attenuate and boost would seem adequate. I
agree with what Jim, K9YC, says
Regarding using USB mode, if you have any EQ or processing applied, it
will also be applied to the data signal on transmit. It is best to
use the Data/Packet mode on the radio because that mode automatically
negates any EQ or signal processing. Plus it is always generates the
signal in
When switching to Data/Packet be sure the radio RX BW is 2.7 kHz. The
BW info is stored by mode in the radio.
On WSJT-X Wide Graph, set the Bin/Pixel value to 4.
73
Bob, K4TAX
On 6/5/2023 9:58 AM, elecraft-requ...@mailman.qth.net wrote:
Message: 1
Date: Wed, 31 May 2023 12:53:32 -0400
Pete:
(a) Check all PL-259 connectors are more than finger tight. I use a
pair of 4" Channel Locks to snug mine. Solves many problems.
(b) Make sure all RF coax antenna cables have proper common mode
chokes. This depends largely on the type of antenna and where best to
install the
While I totally agree with Alan, N1AL, I fear that one who is reading an
external power meter located in the feedline after the tuner will be
mislead by the power indications. At the same time, SWR indications are
typically valid.
Case and point. On one of my antennas, on a frequency where
My question would be "where is the sensor for the P3 located in the feed
system?" It should be between the KPA500 output and the KAT500 input.
Therefore, when the KAT500 resolves a match, then the line between the
KPA500 output and KAT500 input is nominally 50 ohms.
If the sensor is
Page 12 in the manual states; "T indicates FM/Tone, CW/DATA text
decode, or AM-Sync auto-tracking."
73
Bob, K4TAX
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Regarding some of the net and QRM issues mentioned in the attached post,
the ARRL Volunteer Monitor organization can easily deal with deliberate
interference to nets. Remember, NO ONE or NO ORGANIZATION owns any
frequency on any band.
Likewise, hams who have a Tech or General class license
Use an antenna analyzer to determine the actual complex antenna
impedance. I've always viewed SWR as more of a hocus pocus value, easy
value to obtain, but very broad in definition as it is a ratio between
two impedance, both usually unknown.
Chances are the antenna or a connector or feed
If you are looking for K3 EZ application it can be found at this link as
a zipped file. Thanks to Jim, N7US for the upload.
https://groups.io/g/Elecraft-K3/files/K3_EZ
There are 3 versions and I understand the latest one has bugs. The
author is a SK.
I have #2 running on my Windows 10
In running my KPA500/KAT500 combo I found no issues with any RFI of any
type.
Now what I did find, if I hit it too hard, it would flat top and
generate all sorts of crap. This sould get into the computer and lock
up WSJT-x. Also It would turn on or turn off one of the TVs on
satellite
Likewise, I'm a retired pro audio engineer, studio and live music. The
CM500 is a very good headset and plugs directly into the rear of the
K3S. Turn on the bias. They are available from Sweetwater Sound (no
connection to me) for about $60. I also use the Koss SB40 ($29 on
Amazon) which
I purchased a Z100A with the idea of interfacing it to a specific brand/model
of radio. I investigated the Z100A requirements to initiate the control of the
tuner via the transceiver. From my earlier work, I don't see there is a
command from the K3 that will support the requirements of the
David:
The Inrad W1 uses a dynamic mike so the bias must be OFF. As to gain,
set to High and adjust the front panel MIC gain for an indication of 4
to 6 bars indicated on the ALC scale with normal speech. Then set the
CMP for about 10 dB peaks on the CMP scale. Then adjust the VOX gain
Many faults occur via the station ground system. This fault indicated a
difference in potential between the station ground and the AC Mains
ground. In many cases, the station equipment is connected between
station ground and the AC Mains ground. The nearby lightning strike
produces a
Regardless of specs, there is one fellow when asked about the best radio
will always answer "it is the one you enjoy using".
73
Bob, K4TAX
Message: 7
Date: Thu, 14 Jul 2022 16:44:23 -0400 (EDT)
From: brianpepperdine brianpepperdine
To:elecraft@mailman.qth.net
Subject: [Elecraft] K2 versus
I suggest you perform a RESTORE function from a previous file dated
before the problem occurred. Or if you have a back-up system, go back
to a known working configuration. (You have regular computer back ups
don't you?)
Using the K3 Utility, if communicates correctly with the radio, then
Start with COMP at 0, adjust the MIC gain while speaking normal voice to
attain 5 to 6 bars {no more} as indicated on the ALC meter. Then adjust
the COMP for a value to indicate about 10 on voice peaks.
For those that believe in using the "I turned it up a little bit, now
how does that
I used my K3S on 6M extensively on FT-8 over the Field Day weekend. I
used WSJT-X with the Radio Mode set for Fake IT .
For the radio I have DATA MD set to DATA A. I think this is band
specific. There should be no difference in the set-up for 6M being the
same for 160M - 10M.
73
Bob,
AMEN!
I am using my K3S and P3 to observe the signals. The antenna is a 4 ele
yagi at 55 ft, fed with 75 ft of 1/2" Andrew hard-line.
I agree with Jim, the ham community in general has been dumed down in
order to produce the numbers and dollars. That's what politicians
like. The same
I operated FD from here at the house this weekend. Most all of my FT-8
contacts were on 6M.
I was appalled at the poor quality of many signals. Many show spurious
every 1 kHz to 2 kHz either side of their primary signal.
f the attenuation was inserted, but
> the new combo was unstable unless it was.
> Keith at Elecraft and also K7HP both suggested the "fix" and that was indeed
> the problem!
>
>
> 73,
> Jim - N4ST
>
>
> -Original Message-
> From: ele
Is the ATU in BYPASS or AUTO mode? A dit would cause it to resolve a
match or recall a previous match. If your 6M antenna has an SWR of
1.5:1 or less, then the ATU should be in BYPASS mode for 6M.
With WSJT-X, is the Radio Setup menu set to Fake It or SPLIT? If SPLIT,
then is VFO B on
I really think NOT!
On the other hand..the DELETE key works well and as to the JUNK
filter, it works too.
73
Bob, K4TAX
On 6/8/2022 10:20 AM, elecraft-requ...@mailman.qth.net wrote:
Message: 19
Date: Wed, 8 Jun 2022 10:37:33 +0200
From:"df...@darc.de"
To:elecraft@mailman.qth.net
Kevin:
The duty cycle on FT-8 mode is ~50%. The KPA1500 and KPA500 are both
very adequately rated for this mode and for rated outputs, 1500 watts
and 500 watts respectively.
Your K2 is rated at 10 watts output! At 15 watts, just because it will
do it, is no reason to run that power
KPA500 / KAT500 has been SOLD.
73
Bob, K4TAX
On 5/30/2022 8:52 PM, Bob McGraw wrote:
Making room for something else. I have for sale my personal KPA500-F
and KAT500-F. Includes cables ready to connect to your K3 or K3S.
Both items have the last release of firmware installed. Both items
Making room for something else. I have for sale my personal KPA500-F
and KAT500-F. Includes cables ready to connect to your K3 or K3S.
Both items have the last release of firmware installed. Both items are
in excellent condition and include cables and accessories. Shown on my
QRZ page.
Many many radios are loaded with "whistles and bells". But the better
radio is.the one you enjoy using. If it does everything you
wish, then look no further.
73
Bob, K4TAX
On 5/25/2022 1:18 PM, elecraft-requ...@mailman.qth.net wrote:
From: Al Lorona
To: Elecraft Reflector
Oh yes it is there on many SSB signals where the OP is a male. That is
where most of the fundamental male voice energy occurs. Those signals
which look uniform across the SSB TX bandpass do sound good.
I attribute this to the fact most hams will "boost this and boost that"
and never give
Richard:
Oh yes, there are many knowledgeable folks on the reflector. I'm not one
of them. HI HI
I would ask of you to better define your needs, objective, concerns,
frequency of usage, and such. It will enlist a lot better and specific
answers.
73
Bob, K4TAX
On 5/12/2022 9:42 AM,
While I do some internet transactions, I'm very careful to research the
company or person I'm doing business with in advance. Both ways, when
buying and when selling.
Regarding internet sales, I figure there are just as many SCAMS as there
are about that number of SELLERS. That does not
I believe the K3 has one preamp while the K3S has two. The synth
boards have nothing to do with the preamp.
73
Bob, K4TAX
On 5/8/2022 11:18 AM, elecraft-requ...@mailman.qth.net wrote:
Message: 11
Date: Sat, 7 May 2022 15:40:07 -0600
From: Mike Fatchett W0MU
To:elecraft@mailman.qth.net
Your request can be attained by use of the KAT500 Utility to configure
each antenna or antenna port per band as needed.
I use Ant 1 and Ant 2 for my wire antennas, 160M - 10M and Ant 3 for my
6M yagi in bypass mode. After setting up the KAT500 via the Utility,
and training the KAT500 for the
Based on my experience with my KPA500 and an exchange with Jack, W6FB, I
have found no need to run the Fan Speed at any value other than NOR as
defined via the MENU. {See my comments regarding efficiency.}
I'm aware that "others" have measured and tracked and computed results
to an
A year or so ago I embarked on a project to determine the efficiency and
the "sweet spot" operating parameters of my KPA500. I drive my KPA500
with my Elecraft K3S.
Armed with a good 50 ohm dummy load, two watt meters {one on the input
and one on the output}, and my EXCEL spreadsheet, I
The following link provides some very interesting data regarding many
new and current signals heard on or near the ham bands.
https://www.sigidwiki.com/wiki/Category:Military
73
Bob, K4TAX
--
IF ONE EXPECTS COMPUTERS AND TECHNOLOGY TO SOLVE THEIR PROBLEMS,
ONE DOESN'T UNDERSTAND COMPUTERS
Interesting reading. Also the links are equally interesting.
http://www.southgatearc.org/news/2022/april/iarums-newsletter-military-intruders-in-ham-radio-bands.htm
73
Bob, K4TAX
--
IF ONE EXPECTS COMPUTERS AND TECHNOLOGY TO SOLVE THEIR PROBLEMS,
ONE
Only one band? Sounds like the classic RFI into the computer, the
cables between the radio and computer. Most likely common mode current
on the feedline coming back down into the station area. That would
require common mode choke to be installed at the feed point of the
antenna. Might
Are you seeing and * on the KPA500 screen when using the IC-705 and the
amp is in Operate mode? If so, the amp is being keyed while the IC-705
is in receive mode. Confirmed by the fact when the amp is in STBY that
signals are normal.
Check your amp keying interface and cable wiring. You
Are you seeing and * on the KPA500 screen when using the IC-705 and the
amp is in Operate mode? If so, the amp is being keyed while the IC-705
is in receive mode. Confirmed by the fact when the amp is in STBY that
signals are normal.
Check your amp keying interface and cable wiring. You
The TCXO is the reference frequency for about everything that takes
place in the radio. It is the master clock. If it is incorrect, then
everything else is incorrect, for the most part.
A 5 ppm TCXO, or 5 parts per million, can have an error of +/-250 Hz on
6 meters. Where as a 0.5 ppm
Why not get a mike that DOES perform correctly and one that sounds good
as well? And why not learn proper mike technique while at it? There
are a multitude of good mikes on the market that really sound good and
many cost less than $25.
Reminds me of the incident when I was assisting a
With the band switching cable between the radio and amp, the amp
follows the receiver frequency/band. Thus it is not necessary key the
radio or to transmit anything. The bands are loaded with miscellaneous
garbage today. Why add any more?
My K3S connects to my KAT500 which connects to my
Before I posted my numbers, I did print the current Sherwood table. I
then went across each line for the FT-DX101D, the K3S, and the FLEX
6700. I did compare 6 of the 10 or so data lines. My reason for doing
this has to do with someone that posted "the FT=101D has the best
receiver
As I read the numbers the FT-DX101D is not necessarily the top radio.
Here's why:
Noise Floor FT-DX101D -127 dBm Elecraft K3S -135
dBm FLEX 6700 -118 dBm
AGC Threshold FT-DX101D 4.5 uV Elecraft K3S 1.5 uV
FLEX 6700 4.2 uV
100kHz
Most D-104 mikes are not suited for use with today's radios. The
original D-104 was designed to work into a load impedance of 4 meg-ohms
or higher. Today's radios microphone input is about 50k ohms or so.
The result is then excessive load on the D-104 element. This is the
major cause of
To all:
I messed up big time! I failed to edit the digest to just the message
to which I was responding and failed to change the Subject.
While I saw my goof last evening, I'm embarrassed.
73
Bob, K4TAX
__
Elecraft mailing list
ic
> than "Re: Contents of Elecraft digest..."
>
>
> Today's Topics:
>
> 1. Re: When is a Key Out not a Key Out (Julia Tuttle)
> 2. Re: Key In - Key Out (W3AB/GEO)
> 3. K3 strange overshoot (Bob McGraw)
> 4. Re: K3 strange overshoot (Jim Brown)
> 5
Although my configuration is a bit different, K3S, P3, KPA500, and
KAT500, I see a small initial overshoot when changing bands. Drive power
for each band is different. PWR SET is Per Band. TUN PWR is set for 20
watts. I have the amp configured to switch to STBY when changing
bands. I
t find how much
they charge for that service. Even that is only calibrated to 5% with
3% typical. So, if you off 5W while measuring 100W, who knows, it
might be just the calibration error.
73,
Mark
W7MLG
On Sun, Feb 6, 2022 at 10:11 AM Bob McGraw wrote:
'Twas said "a man with one wat
'Twas said "a man with one watch always knows the time. A man with 3 or
4 watches is never quite sure of the time.".
I just recently went through power calibrations on my K3S and my
KPA500. All now agree with the power meter reference I used. Also, this
was done using a known 50.5 ohm dummy
Well clearly one of the indications, radio or power supply, is incorrect.
Just checked mine:
TX @ 100 watts, radio display = 18.3 amps, Power supply = 19.0 amps.
Voltage: Radio RX = 14.3, PS = 14.5. Voltage: TX Radio = 13.9v, PS
=14.5v
If the power supply voltage drops during TX, the
I'll show my age by doing this, but lets revert mentally back to the
Collins S Line. The transceiver, using a pair of 6146's in the PA, was
most efficient and linear when properly tuned and loaded. It produced
about 120 to 140 watts of PEP output. And there was NO Power control or
method
While most may be concerned with lower than rated TX power, I've come to
the conclusion my K3S is running more than rated power. I've followed
the instructions in the manual for Power Calibration and used the
Utility to perform TX Power Calibration. Having done this several
times, and using
I made a handful of staples using some scrap solid wire. #10, #12, #14
works great and no need to remove the insulation. Make them about 4"
long per side, and place them over the radial, pushing them into the
ground. I agree, cut the grass short, pull the radial tight and "staple
it to the
The logical explanation is from Keith, one of the K3 techs at
Elecraft. He said; "avoid 5 watts and 50 watts" That's
logical enough for me.
73
Bob, K4TAX
On 1/16/2022 11:40 AM, elecraft-requ...@mailman.qth.net wrote:
Message: 1
Date: Sun, 16 Jan 2022 07:06:34 -0700
From: Wes
In SSB mode, until you speak into the mike, there is no output signal in
transmit mode. Switch to CW mode, key the radio via an external key or
paddle and see what you have. Or press XMIT/TUNE function for 2
seconds. You should have output. Also check to see what value of PWR
is set on
I view the quality of the design and the quality of the manufacturing
process for Elecraft product is at least equal, and in many cases,
better than most other ham equipment companies. I for one did beta
testing, both hardware and firmware, for several models for another ham
radio company.
Based on my measurements and method I used to measure 100 ft of window
line, the loss in the line from dry to wet is frankly nil. However, the
wet line does show a velocity factory change, in effect an electrical
change in line length, and thus when connected to an antenna, will have
a small
Why not just buy a nice clean Bird 43P and a new element or two. Not
hamfest elements. That works for me and gives total confidence on what
I see as power output. Of course if one desires all equipment to
match, then so be it.
73
Bob, K4TAX
On 1/13/2022 3:23 PM,
as the internal circuit has a slightly higher
SWR than my 4 ele yagi.
73
Bob, K4TAX
On 1/3/2022 11:01 AM, Bob McGraw wrote:
I don't find that to be the case with my KAT500. Upgraded to 2.05 a
couple of weeks ago. I just ran 80M every 25 kHz from 3.525 to
3.975. The original memories
I don't find that to be the case with my KAT500. Upgraded to 2.05 a
couple of weeks ago. I just ran 80M every 25 kHz from 3.525 to 3.975.
The original memories and a few added show 1.0:1 on my K3S at all
points. The external SWR/PWR meter between the radio and tuner input
agrees. The
Sure..at the place I worked we ran all the populated boards after
wave solder through a commercial dishwasher with hot water. The flux was
a petroleum based product as I recall.
73
Bob, K4TAX
On 1/2/2022 7:43 PM, elecraft-requ...@mailman.qth.net wrote:
Message: 10
Date: Sun, 2 Jan 2022
cedure, but it's actually kind of amusing to think about repeatedly
doing all of that during a contest.
73,
Dave?? AB7E
On 12/15/2021 9:52 AM, Bob McGraw wrote:
The approach I use for the Noise Blanker is this.
I first activate the NB and then the Level.?? I start with the DSP OFF
and the IF O
K4TAX
On 12/28/2021 11:46 AM, Lyn Norstad wrote:
Bob -
Should you ever feel the need to replace your feedline, open wire line will
solve that problem.
73
Lyn, W0LEN
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Bob M
I doubt that ice on the antenna would have any effect in terms of
increased loss. However, I would expect the resonant frequency to
change and thus the need to adjust the tuner. If it is and ATU /
automated tuner, then perhaps a bit too low power may cause the SWR
bridge to read
Yuck! As a retired recording studio engineer, CBS Records, having the
same signal out of phase by 180 degrees to one ear, is much like
sticking and ice pick in ones ears.
Most systems will have a variable phase shift depending on frequency,
usually not to exceed 30 degrees. In this case,
Richard et al:
Just checked my KAT500 and it had V1.75 installed. Then with the KAT500
Utility, version 1.21.9.15, I did download the firmware from the
Elecraft site and install V2.05 into my KAT500. I saw no issues.
Running a Windows 10 Pro 64 bit computer.
73
Bob, K4TAX
On
For those using the clamp-on ferrite devices, when installing them, be
sure part A closes completely and solidly contacts part B. Otherwise,
there is no flux path and the device is ineffective. If it is closed
and loose on the cable, then that's good. If it is closed or difficult
to
The method I use seems to work great and be easy enough to do. No zero
beating required and no external measurements required.
Put the radio in CW mode, tune to a WWV frequency and press and release
SPOT. The radio will automatically zero to the carrier with a tone that
matches your
The approach I use for the Noise Blanker is this.
I first activate the NB and then the Level. I start with the DSP OFF
and the IF OFF. I then adjust the DSP value for optimum results without
it destroying the quality of the signal. DO MAKE A NOTE OF THIS VALUE.
Then set the DSP back to
Just went through different antenna configurations and bands. Using the
KAT500 Utility, selecting the ATTENUATOR and then TUNE on my K3S shows a
SWR of 1.5:1 and when the ATTENUATOR is not selected the SWR shows
1.1:1. An external SWR/PWR meter in the line between the radio and
KAT500 shows
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