Do you really want to remap words/abbreviations (like the 2 character
word "es" which is the symbol for the element einsteinium) in this
way? It's quite all right for prosigns like BT and the "..--"
mentioned in the operator's manual, but to me it violates the
principle of "least surprise" - is "es
Sure, but we're not using American Morse here - there's no "half step"
in International Morse. Whatever - I'm the communications protocol
design guy at work, and can't avoid a purist attitude about gateways
(CW to ASCII in this case). I can see prosigns used as link control
characters since they ar
For years here at my place of employment we've offered UHF diversity
receivers where, instead of switching between the two signals, we
blend the audio outputs of the receivers in a ratio controlled by the
RF level of the received signals in the two receiver sections. Once
done using analog circuit
I've settled on the 1 kHz roofing filter to start out with since it
will allow a more expansive "context" when using the Dual-passband CW
filter feature, something I'm really interested in.
Bob NW8L
On 11/6/07, Greg - AB7R <[EMAIL PROTECTED]> wrote:
> John,
>
> I started back up with the QRP Fox
In fact, you can access the FTP site directly from within the K3
Utility Help screen if you wish - just click on the link
(ftp://ftp.elecraft.com/K3/firmware) given in the "Manual File
Transfer" help topic. An instance of Windows file explorer should
appear (framed within the help screen) displayin
You might under-rate the power of the stored preset if you haven't
experienced it. The USER1, USER2 feature on the TT Orion is great -
with a button press I can completely reconfigure the rig from, for
instance, a CW setup to a SSB setup - all settings (xtal filter
selection, bandwidth, AGC, PBT, e
2-way bus, yes, but symmetrical, no. The USB flash card and the
Serial<->USB adaptor are both USB peripheral devices, so they can't
talk to each other directly - they both expect to be connected to a
USB host port, as found on a laptop for instance. The host port
masters the bus, something the peri
Maybe what you need is the ability to recall presets, like the Orion
USER1/USER2 feature?
Bob NW8L
On Dec 2, 2007 3:06 PM, Dick Green WC1M <[EMAIL PROTECTED]> wrote:
> Not to beat a dead horse :), but I thought of another contest situation
> where I need a visual status reading. Most of the time
Well, From the error message I infer that the file is in Intel Hex
format. This format contains a built in integrity check, namely a
checksum for every line. So it seems the uploader did indeed perform
an integrity check - and detected a problem. Relax, these guys *do*
know what they are doing!
F
That's where the better shape factor hits home. For the 1 kHz filter,
with -30dB BW of 1400 Hz, we have adequate rejection at 1400/2 = 700
Hz, versus the 5-pole 500 Hz at 1092/2 = 546 Hz, a difference of only
154 from the center frequency. Not a bad single filter choice for for
CW ops like me who a
No, he's correct. According to the Wayback Machine, it was originally
adjustable:
http://web.archive.org/web/20070621195718/http://www.elecraft.com/K3/K3FAQ.htm#CW
but warned that it might change. IMHO, the fixed setting of 5 ms is
ok. The K3's I've heard on cw don't sound too "soft" to my ears,
The capacitance between individual strands in Litz wire limits it's
usefulness above 1 MHz or so. W8JI has an interesting discussion of
skin effect at:
http://www.w8ji.com/skindepth.htm
Bob NW8L
On Jan 6, 2008 3:54 PM, David Cutter <[EMAIL PROTECTED]> wrote:
> I've used several strands of enamel
While we're at it, I remember that an FRD-10 was in operation at NSGA
San Diego which we called the "Dinosaur Cage". That was eons ago,
don't know if it still exists.
Bob NW8L
On 12/1/06, Paul Picking <[EMAIL PROTECTED]> wrote:
Greetings all,
I believe there is still one at Misawa AFB in Jap
Umm, the ARRL only wanted to extend phone for Extras down to 3725.
It's all here:
http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-04-79A1.pdf
and the ARRL wanted to retain the morse testing requirement for Extras:
http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-05-143A1.pdf
RC
On
Then you are fortunate enough not to be subject to power line noise at
your QTH. Here I've had continuing problems with power line noise (a
raspy buzz) and the K2 noise blanker is very effective indeed.
Bob NW8L
On 3/10/07, Rich McCabe (IWH) <[EMAIL PROTECTED]> wrote:
I have had two K2's fully
I use a simple doublet made from 64 ft. of 18 ga. speaker wire. The
first 24 ft. is split to make halfwave dipole elements on 30 meters,
with the remaining 40 feet serving as a balanced feedline. The KX1 can
tune it on all 3 bands, with good results. Besides vee and sloper
arrangements, I sometimes
I had to replace mine once, it's not as bad as you might think if you
have a big iron. I cut the center conductor wire, then heated the body
of the connector with a large iron until the solder holding it in
place reflowed - at which point I turned the board upside down and the
connector fell right
I picked one up today as well, after reading your post. No go at
first, as is so often the case there is little or no QA on these cheap
things. Out of the box the thing rattled, so I had to take it apart.
Not only was there a piece of solder wire rattling around loose, but
one of the speaker wires
http://www.elecraft.com/news.htm
On 6/1/07, Scott McDowell <[EMAIL PROTECTED]> wrote:
Hi
What do you get with the basic 10 watt K3? I assume it does CW, but is it
equipped for SSB?
Or digital modes. I've never seen anything about what you are actually
getting, other than
roofing filters.
Thank
Hi Fred, you were my first QSO, tnx. Here's the story from NM:
28 qso's, 21 bees, 7 home-based stations, all 20 m.
Rig: KX1, 10W solar panel charging a 2AH gel cell. The antenna was a
"coupled resonator" 40/20 meter inverted vee with apex at about 20
feet above a sharp N/S ridge line at 9600 feet
I took a camera this year and got some pictures. They, and some info
on the antenna, are now up at:
http://www.whitemesa.com/nw8l/fbb07.htm
I sure like the telescoping fiberglass poles.
Bob NW8L
On 7/30/07, Chris Kantarjiev <[EMAIL PROTECTED]> wrote:
> And it's time to go back to experimenting
I took the reasoning a step further since the data for the 1 kHz 8
pole filter is:
Filter20kHz 10kHz 5kHz 2kHz
---
1 kHz, 8 pole 100+ 100+ 10094
---
So I ordered the 1 kHz filter since I'm just a ragchew type cw
operator. It's nice to be able to run as wide as 800 Hz or
Right on. That's how USB connectivity was incorporated into our latest
product line. The FTDI part interfaces with a UART on the
microcontroller on one side, and a normal USB host port on the PC.
FTDI furnishes a USB driver and an application level DLL which our PC
hosted control software calls in
My search goes on for a simple field antenna system for which the KX1
can get a match on 40, 30 and 20 meters *and* with a good long
feedline so that the antenna can be placed in an exposed location
while the op takes shelter from the sun and wind some distance away.
I'm planning for the ARS Fligh
Maybe, for your line length, the 4:1 transformation is putting the
feedline input Z out of range of the K1 tuner on 40 and 30. It might
be fun to try switching to a 1:1 balun (or no balun at all) to just to
see what happens... since it's so easy to do. Beyond that,
experimenting with feedline len
You don't mention on what band you were trying to get a match... 40 meters?
If so, I can relate that once in a while, my KXAT1 seems to get
"stuck" in the sense that I can't get a match even when it's a easy
scenario - such as resonant antenna fed with 50 ohm coax. I've learned
that by using TUNE
It's a big subject, at work I have this web site bookmarked:
http://www.rohsguide.com/
as a good place to start.
Bob NW8L
On 8/24/06, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:
Sorry Ive been gone for a while, what exactly is ROHS and how does it affect
me? Is it just the type of solder a
Hi,
Kit nbr 1211 (with all options) went together without a hitch and
exceeded expectations. It's destined for backpacking in the NM
mountains, on a diet of lithium batteries. Anyway, being a sideswiper
(cootie) key user, I wired the KXPD1 paddles as such (both wires to
the plug tip) and set keyin
So far I've not bothered with a balun when running my KX1 into a
dipole fed with balanced line (using the internal tuner to match) and
seem to have pretty good results, better than the random wire and
counterpoise so far (portable operation over poor ground). My thinking
was that since the whole sy
On 8/8/05, Stuart Rohre <[EMAIL PROTECTED]> wrote:
> This was done for a floating system, or a closed system, ie dipole in space,
> no other ground. That would pretty well approach the floating system you
> have used on rock.
>
Well, my thinking went like this:
Imagine I connected a 3/4 wavele
I'm using a small semi-rigid Case Logic camera case. Works great, unzip one
side panel to access small pouches for earphones, extra batteries, etc. and
the other to get at the rig and antenna. Fits into the backpack nicely,
cushions the rig nicely, and holds it's shape under reasonable amounts o
On 9/10/05, Martin Gillen <[EMAIL PROTECTED]> wrote:
>
> I know that coax can be looped around 5 times to
> create
> a balun near the dipole feedpoint. Can twisted pair
> be looped around to create a balun also?
Sure, a 1:1 choke balun can be made with twinlead as well as coax feedline.
I've
Specs, manual etc. are all available on the Ten-Tec website:
http://www.tentec.com/products/160%252d6-Meter-Solid-State-Linear-Amplifier.html
I'm not sure about QSK operation. From the product brochure:
"Amplifier keyed form direct connection to foot switch,hand switch, or
straight key.
Key Out
Check the K3 schematics - there *is* a static bleed resistor at each
antenna input, including the KXV3 Rx Ant In jack.
Gas discharge tubes are also present in the KANT3, KAT3 and KRX3.
Bob NW8L
>Which begs the question...why isn't a 100K across the antenna jack in the
>original design?
>BTW, I u
Check the K3 schematics - there *is* a static bleed resistor at each
antenna input, including the KXV3 Rx Ant In jack.
Gas discharge tubes are also present in the KANT3, KAT3 and KRX3.
Bob NW8L
>Which begs the question...why isn't a 100K across the antenna jack in the
>original design?
>BTW, I u
I experience a similar thing. With KPA500 BAND CHG set to STBY and
using the KPA500 band buttons to change bands, it happens if the
KPA500 goes from OPER to STBY on band change. Elecraft support
confirmed the issue and said that it would be fixed in the next K3
firmware release.
Bob NW8L
>Fred,
>
Maybe not. The analysis presented in this article:
http://fermi.la.asu.edu/w9cf/articles/balun/
leads to the conclusion that locating the choke balun at the input of
the tuner, and floating the tuner, offers an advantage only for
balanced tuner designs (and good balance in the load). The stress
Is the negative lead from your power supply to the KX3 open, maybe at
the DC input connector? If so, return current could be flowing through
the coax shield, antenna system ground etc. to find its way back to
the Ten-Tec supply through its chassis to V- connection. Disconnecting
the coax would inte
I downloaded the KAT500 manual from the website a few minutes ago,
Revision A. I think it's been changed since you downloaded it, I see
only a portion of the text you quote below. However,
bullet (4) on page 7 still starts with the line "DB15 interface cables
with male and female connectors (one ca
Actually, in many cases a USB port is used in conjunction with a
USB<->Serial converter chip, like the FTDI series, precisely to allow a
product to be accessed over USB without changing the serial protocol
originally used over the RS232 interface. The USB interface is exposed
to software on the PC
Amplitude (Level) Calibration is described on page 22 of the latest P3 manual:
http://www.elecraft.com/manual/P3%20Owner%27s%20man%20Rev%20A7.pdf
Use it to calibrate the amplitude scale on the P3.
Bob NW8L
On Sun, Dec 12, 2010 at 7:04 AM, wrote:
>
> Hello all,
>
> One of the menu items availa
FWIW this was posted back in September:
http://www.mail-archive.com/elecraft@mailman.qth.net/msg102741.html
"The KPA500 requires 30 to 40 watts for full output."
which puts gain at 12dB or so.
Bob NW8L
On Thu, Dec 16, 2010 at 5:11 PM, William H. Droeger, Jr.
wrote:
> Has anybody heard how muc
I observe the full 2.8 kHz red transmit cursor underneath the green
receive cursor when DATA A used.
However, when I press and hold ALT on the K3 to select DATA A REV
I see only the green receive filter cursor, without the red transmit
cursor.
Was DATA A REV overlooked in the makeover?
Bob NW8L
Well, if these connectors match up to the unused cutouts in the
existing P3 rear panel, these may be the jacks marked "keyboard",
"ext. display" and "aux. data" with "sensor" remaining empty. Or maybe
not.
Bob NW8L
>Well, now:
>
>I spy a USB socket and what appears to be an Ethernet socket above
Very nice -- will the adapter/P3 interface be the "aux. data" port
rather than the IF port, perhaps to minimize the number of conversions
in the path? I've been wondering about possible applications for "aux.
data".
Bob NW8L
>Not so. We also plan to offer a small IQ to P3 adapter for the KX3, wh
>From the changes notes for K3 firmware MCU 4.47 / DSP 2.73, 12-2-2011:
REMOTE-RIG SUPPORT:
"One K3 can now directly control another, with one acting as nothing
but a front panel. This "remote rig" mode provides a nearly perfect
emulation of the remote K3's display and controls. (Previously, fron
>what IS the difference between FTDI and Prolific.
They are two different manufacturers of USB to Serial hardware ICs (chips).
http://www.ftdichip.com/
http://www.prolific.com.tw/eng/company.asp
Besides the hardware, each manufacturer supplies royalty free software
(device drivers) as part of t
According to the K3 Owner's Manual, the K3 uses a 24-bit ADC. From the
schematic, it appears to be the Burr-Brown PCM1804DB, a very nice
part.
Bob NW8L
-Original Message-
Interesting. Can you explain how exactly you define "DSP horsepower"? Is
there evidence that K3 does not have enough
I suggested the same thing a while back...
http://www.mail-archive.com/elecraft@mailman.qth.net/msg100958.html
so it's nice to know I'm not alone!
Bob NW8L
>I’m new on the reflector as of today. I searched for this and didn’t see
>anything that addresses my thought and I hope I’m not repeatin
According to the K3 manual (page 73):
"The KAT3 provides a wide-range, switchable C-in/C-out L-network for matching
a variety of antennas with SWR as high as 10:1 (100 W) or 20:1 (10 W)."
so the KAT500:
"Typical matching range at 500-600W is up to 10:1 on most bands."
is comparable to the KAT3
If you are using Windows, there *is* a way to adjust the emu0202 output
in software. It's not by using the EM-U control panel app but by using the
Windows Volume Control applet instead.
I'm using an emu0202 with Windows XP.
Either access the Windows Volume Control from the task bar
or
Navigate
Will the P3 get data display without the need to install the P3SVGA?
This would be nice for those who don't need the external monitor or
want to use a keyboard, but are happy to use paddles in PSK-D mode...
that VFO B area is pretty cramped.
Bob NW8L
... The P3 will also get data display,
with o
Especially silly since if you actually read the erratum:
http://www.elecraft.com/manual/E740163E%20KX3%20Owner'sManErrata%20B2-2.pdf
it's defined explicitly: "Some specifications are still shown as TBD
(to be determined)."
Bob NW8L
>A silly thing to debate -- but, it has always meant "To Be Don
Well, there is this:
http://www.elecraft.com/manual/KX3reference2.pdf
on the Elecraft website.
Bob NW8L
>Has anyone updated / created a cheat sheet for the KX3 yet ??
>
>If so, could you forward a copy to me please…
>
>Thanks
>Niel
>WA7SSA
___
In K3 Utility Help, USB to Serial Adapter Troubleshooting topic:
"Before loading K3 firmware through a virtual port associated with a
microHAM microKEYER, microKEYER II, MK2R or MK2R+, change the microHAM
USB Device Router's Radio type to "none". (TU W4TV). If you are unable
to load firmware throu
I find nothing in the K3 manual or K3 Utility regarding "PWR on/SHIFT
LO". Is this a useful undocumented procedure or just voodoo? Perhaps
the KE7X manual provides a rationale for this action but I don't have
a copy of it, to date the Elecraft manual has been entirely
sufficient.
Bob NW8L
---
8L
On Sat, Jun 30, 2012 at 11:59 AM, iain macdonnell - N6ML
wrote:
> Bob,
>
> See the section of the K3 Owner's Manual entitled Troubleshooting /
> Parameter Initialization
>
> 73,
>
> ~iain / N6ML
>
>
>
> On Sat, Jun 30, 2012 at 10:32 AM, Bob Cunnings
I see a similar problem here when using the band change buttons on the
KPA500 -- with KPA500 BAND CHG set to STBY and K3 PWR SET set to PER
BAND. The K3 STBY power level for a band "A" appears to be overwritten
with the OPER power level when the KPA500 is in OPER mode and I shift
to another band "B
I don't understand this response. Why would he need to use 2 serial
ports or Y adapters? He states that a full serial port will run from
computer to interface box, where the serial signals will be broken out
as required for PTT and CW. Presumably the KXSER rs-232 cable could
run between interface b
- one having the RTS or DTR signals and the other being
a port associated with the USB to serial chip.
73,
Don W3FPR
On 7/13/2012 11:52 AM, Bob Cunnings wrote:
> I don't understand this response. Why would he need to use 2 serial
> ports or Y adapters? He states that a full serial po
No, the RF Gain control is one-half of a dual potentiometer, see the
K3 Front Panel schematic,
page 5 of 7 "Front Panel - Miscellaneous".
Bob NW8L
>The RF pot in the K3 is a encoder, not a carbon pot found in old tube radios
>used as a volume control.
>
>Ed K7WIA
I take my KX1 on backpacking trips, and see internal batteries in
anything like a KX1 or KX3 as indispensable!
Internal battery power helps to keep rig setup quick and easy. I like
using internal AA lithium batteries in the KX1 because they are light
weight and will power the rig for a very long t
If you're looking for a documented level, here's the change note
describing the SWR power rollback feature when it was introduced (MCU
1.87 / DSP 1.69 on 5-3-08):
* POWER ROLLBACK BASED ON REFLECTED POWER: Power rollback begins at about
2.5:1 at 100 W (and of course much higher SWRs are tol
Actually, there is more to it than just the 5-pole filter offset.
The panadaptor offset between the carrier and the IF center can shift
as filter width increases because the K3 doesn't let the lower edge of
the filter fall below 200 Hz. In CW mode for example, using a pitch of
600 Hz, there is a c
On page 66 of the manual there are instructions for "Parameter Initialization".
Bob NW8L
>I have searched the manual and can not find how to do a hard or soft reset of
>K3 # 758.can anyone help me.
>
>Tnx,
>
>NF8J,
>
>Paul
__
Elecra
I've been hearing (and seeing on the P3) an 850 Hz shift RTTY signal
on 10.130 MHz for years now, virtually every evening. I use it as a
propagation indicator on 30m, when it's strong I can work into the
eastern US from here (NM) easily. I've read that it is an encrypted
transmission of the US Nav
Any progress in this area? I'm experiencing the same problem.
KPA500 s/n 468 fw v1.11 with BAND CHG set to STBY
K3 s/n 495 fw v4.42 with PWR SET set to PER BAND
Works correctly when using band change up/down buttons on K3 but when
using band change buttons on KPA500 the power setting for OPER re
I too suffer from some severe local noise, of several varieties, which
comes and goes depending on time of day, day of week etc. So I picked
up a DX Engineering NCC-1 here and am happy with it. It's well made
and the control knobs are *big* and very smooth, a pleasure to
operate.
It integrates nic
Forgive me for asking, but I'm not a contester and am unclear on how
things work. Tuning around 40 mtrs I hear a lot of what seems to be
ARRL CW Sweepstakes activity right now. According to the ARRL website
the contest begins at 2100 hrs Sat. March 5 (UTC) - but at this moment
it's only 0310 hrs Ma
Ok, thanks - I never knew such a thing existed. It seemed just as
intense as the real thing! I'll have to try it myself some year.
BTW, I meant to say November, not March!
Bob NW8L
>This is a practice session. No worries
>Mike W0MU
>J6M CQ WW DX CW Contest 2011
>J6/W0MU November 21 - Decembe
>Those tones are not sine waves.
I wasn't so sure about this. Over the years I've never heard this
mentioned, and technical references like NIST 25-67 and 668 describe
the audio tones as being derived from the cesium standards, with no
mention of harmonic content. So I sent an email to WWV asking
Actually, no, not for FM. Just as you say, most FM receiver IF
circuits run the circuit gain at maximum. Also, a conventional FM
receiver IF contains one or more limiter stages. Quieting is not a
function of reduced IF gain - it is a function of the limiter.
Quieting is observed as signal strength
Here's some info from the ARRL regarding smart meters:
http://www.arrl.org/smart-meters
Bob NW8L
>Hi Gang, my utility is about to roll out smart meters and it occured to me will
>it generate rf on hf? It will be 6' from shack. Anyone pulling their hair out
>over smart meters? I hope not.
>
>73
>
The answer is found in the Rev B P3 manual on pages 18 and 19, it
varies by tuning mode. In "tracking" mode the right and left labels
display frequencies "in terms of their offset
from the center", and in "fixed-tune" mode they are "actual RF
frequencies that correspond to the left and right edges
Another available tuner is the Palstar BT1500A, a balanced L tuner
with choke balun at input. I've been using one for years here. Build
quality is excellent and it has served me well matching doublets fed
by 450 ohm window line running into the shack. Right now it's being
used with the KPA500.
Bob
Here's a link to the W8JI radiation resistance topic:
http://www.w8ji.com/radiation_resistance.htm
where the antenna efficiency issue is analyzed - using a 1/4 long
folded radiator as the example. In this analysis the antenna efficiency
is unchanged because total power and ground loss power terms
I simply disable AGC when I wish to run a wide receive bandwith with
PSK31 for "point and click" tuning - precisely to avoid such a
problem.
Bob NW8L
On Wed, Jan 7, 2009 at 5:44 PM, Don Wilhelm wrote:
> Thomas,
>
> I will not answer your questions directly,
> BUT
> From an operational standpoin
d of the soundcard ADC is
> also a possibility with equally bad results.
>
> I have to admit that in many cases, one can operate with a wide bandwidth
> with no problem, but when that strong signal enters the passband, the wide
> bandwidth possibilities are "all over". I
On Fri, Jan 9, 2009 at 8:23 AM, Arie Kleingeld PA3A wrote:
> There are probably more categories if you think about it.
>
There *is* another category - features described in the manual since
day one that are still not implemented, like synchronous AM receive.
Bob NW8L
___
Are you maintaining a constant ALC indication of 5-7 bars at each gain
setting? Or is the ALC indication falling as you lower the gain
setting?
Bob NW8L
On Tue, Jan 13, 2009 at 5:04 PM, wrote:
> Hi All,
>
> I have not done much SSB so I am not sure what is happening, but this does
> not seem co
I can only speak for myself, but I adjust the K3's BW, AGC, RF gain
and AF gain so that the there isn't that much noise at all - so full
QSK is not painful at all, but actually quite pleasant. I suppose such
ducking of the audio could be desirable when when gains are turned way
up in an attempt to
I have found that a change to VFO CTS does not take effect until power
is cycled - try that.
Bob NW8L
On Wed, Jan 21, 2009 at 5:26 AM, Ed K1EP wrote:
> I am not sure that VFO CTS is working properly in 2.78. One complete
> revolution of the VFO knob changes the frequency 2KHz in CW mode for
> m
I've always advocated having sidetone and SPOT levels be independently
adjustable - I sidestep the issue by using CWT rather than SPOT to
zero beat a received signal (either auto or manual mode). I then keep
MON set for my preferred sidetone level (relatively high, I also use a
bug).
Bob NW8L
On
What VOX gain settings have you tried?
Bob NW8L
On Wed, Jan 21, 2009 at 7:29 AM, Mike, W9QS wrote:
> I have a new K3/10 Serial Number 2547 and I love it. First contacts were
> during the Fox hunt last night. I only have one problem. I ordered the Heil
> proset and for some reason I can't ge
Take a look at this:
http://tinyurl.com/b2hvrw
Bob NW8L
On Thu, Jan 22, 2009 at 6:56 PM, Jim Miller wrote:
> What's the typical delay through the NR filter when set to (my usual) N1-2?
>
> tnx
>
> jim ab3cv
> ___
> Elecraft mailing list
> Post to: Ele
Does this allow setting VFO A and VFO B to different bands for units
without the sub-receiver?
Bob NW8L
On Tue, Feb 3, 2009 at 8:22 PM, wayne burdick wrote:
> Hi all,
>
> The K3's main/sub band independence functionality is working quite
> well. To get it finalized, I'd like to find a few more e
I would annoy me if the red TX LED flashes continuously while in test
mode since I engage it when using the K3 in receiver only mode (e.g.
when listening around, so as to not accidentally transmit on top of a
monitored QSO). I find that the flashing TX icon is sufficient
indication of test mode. As
Oh, sorry, I didn't read Julian's message correctly. As a CW op, I see
that in CW mode the TX LED flashes when transmitting in test mode,
following the keying. I fear that the whole point of the discussion
was lost on me, it's about an indication when using PTT modes.
While we are at it, I've argu
A while back Wayne posted a message about such a DSP board mod on the
Yahoo Groups list:
http://groups.yahoo.com/group/Elecraft_K3/message/2881
Bob NW8L
On Sat, Feb 7, 2009 at 5:47 PM, Don Wilhelm wrote:
> John,
>
> Sounds like 'specmanship' to me. I don't know about any mod like that.
>
> 73,
Attenuator gain is -10dB, and preamp gain is 11dB according to sheet 4
of the RF board schematic.
Bob NW8L
On Mon, Feb 9, 2009 at 10:26 AM, wrote:
>
> I spend most of my radio time studying the OP manual but I can't find a
> figure [ in DB ] for the PRE/ATT selector. Am I missing it?
>
> k9il
According to the Enhancements and App Notes page at:
http://www.elecraft.com/K3/k3_app_notes.htm
"This modification is needed for all K3s shipped approximately before
01/12/09 containing either a Revision "XB" or Revision "A" KIO3
board."
Bob NW8L
On Sat, Feb 14, 2009 at 5:41 PM, KC2UEE wrote:
I'm not looking for another radio, as I've been doing what seems
obvious (to me) - using USB mode for sound card digital operation, not
DATA A. Yes, I forgo the benefit of the management of compression
setting and mic selection that comes with using DATA A - but as things
stand now one must change
Did you turn compression off?
Bob NW8L
On Mon, Feb 16, 2009 at 12:12 PM, wrote:
> After all this discussion of power control in DATA A mode vs SSB, I decided
> to try using PSK31 with USB mode, rather than DATA A. I changed the MIC SEL
> menu item to Line IN and adjusted the ALC meter to 4-5 ba
That's it - you must turn compression off, one of the virtues of DATA
A is that it does this for you automatically. With compression off it
should work fine.
See pg. 31 of the K3 Owner's Manual where it says:
"Soundcard-based data communications can be done
using LSB or USB mode. However, DATA mo
Out here I often operate in the desert, with no trees at all for
antennas or shade! I use a 32 foot telescoping fiberglass pole
(sometimes 2) from The Mast Company to get wire in the air nice and
high, either as horizontal doublets, vees, or slopers.
http://www.tmastco.com/main/page_products_tele
It's described in the "Miscellaneous Setup" section under the "Time
and Date" heading - on page 47 of the K3 Owners Manual.
Bob NW8L
On Sat, Mar 7, 2009 at 5:11 PM, JIM DAVIS wrote:
> I'd like to SET the internal clock of the K3 to be somewhere near accurate,
> but where is that
> EXPLAINED IN
N7WS took a look at precisely this subject:
http://users.triconet.org/wesandlinda/ladder_line.pdf
BTW I use 450 ohm ladder line here to feed a c.f. vertical wire
doublet for multi-band operation using a balanced tuner - at least
when dry, it's the best option to keep loss low and for mechanical
r
Er, no, or we wouldn't have to configure the filters by mode manually
(or use the K3 utility). A glance at the filter schematic for the
KFL3A reveals only filter components.
Bob NW8L
On Fri, Mar 27, 2009 at 6:08 AM, wrote:
> Last time I looked at one of the filter boards there seemed to be a
>
P3 s/n 74 arrived today, went together nicely and works great. I'm
still getting used to it, but as a long-time LP-Pan/PowerSDR-IF user,
I was struck by one thing right away.
With PowerSDR-IF point and click tuning with the mouse is enhanced by
the fact that after pointing and clicking to change t
Perhaps the
implementation of external monitor support will help by expanding the
display, but that's off in the future.
Bob NW8L
On Wed, Aug 11, 2010 at 7:56 AM, Bill W4ZV wrote:
>
>
> Bob Cunnings wrote:
>>
>>
>> With the P3, when I move the marker and tap the SELECT kn
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