Shouldn't Elecraft decide on a standard microphone connection and stick
with it? I suspect they probably have as the K3 appears to be Kenwood 8
pin with no alternatives, if I remember correctly an earlier post from
Eric.
If anyone building their K2 wishes to use a Kenwood microphone, then
That was 1 of my first questions to Wayne, his reply:
We'll be supplying only SO239s, but you could replace them with N-type
yourself, assuming they'd fit. It's a tight squeeze with the ATU
installed.
73,
Wayne
N6KR
On 7/5/07 02:08, [EMAIL PROTECTED]
[EMAIL PROTECTED]
Myself I use high-quality pressure-connection PL259's (about $6 a pop),
these are fine. Maybe another little extra Elecraft could offer, some PL259
are wretchedly bad.
Just found a picture of some decent PL259
http://www.diodecomms.co.uk/images/UHFAIR7.jpg which are lots better than
I would probably not have ordered the K3 if it were not for the good
exchange rate.
Regardless of that good rate, I don't see big reductions in dealer prices
for US kit.
73
M0XDF
On 7/5/07 02:08, [EMAIL PROTECTED]
[EMAIL PROTECTED] sent:
Message: 28
Date: Sun, 6 May 2007 18:55:30 +0100
Not to derail the K3 discussions, but :-)
I'm in Manchester for the week, and brought my KX1 along. If someone
reading this list is nearby, I'd love to get together for a pint or
get suggestions for some place I can throw a wire into a tree without
getting arrested...
73 de chris K6DBG
Hi Folks,
I wonder if I can pick the collective brain about my XV432 which has low
power output.
I am driving the transverter with my K2 and the XV60. This is all fine
as my XV144 performs perfectly. The problem is in my XV432. Key down I
get about 7W output for the first second or so then
I wrote:
Bottom line:
1. Narrower is not always better (Ten-Tec experience)
2. 8-poles is not always better than 5-poles (per Inrad)
3. Let IMD and BDR measurements be your guide
More evidence below to support waiting for IMD/BDR
measurements before ordering any roofing
Hi to the list,
Hopefully some one will confirm what I think is the RFC's.
I'm currently building the 40m receiver (RF Board stage 2) I think I
have identified the RFC's which are similar to resistors but thicker
in their body shape with the leads axially.
Like resistors they are marked with
On Mon, 07 May 2007 Dave (G4AON) wrote ...
Shouldn't Elecraft decide on a standard microphone connection and stick with
it? I suspect they probably have ... use a Kenwood microphone, then ...
jumper ... the adjacent pins which avoids soldering ... on the pins. ...
the Kenwood MC-43S ... appears
Hi All,
Thanks to Tom N0SS and Steve K0PQ for the speed replies they've
answered my query, much appreciate guys.
73 Gary G7USC
At 12:02 07/05/2007, Gary McKelvie wrote:
Hi to the list,
Hopefully some one will confirm what I think is the RFC's.
I'm currently building the 40m receiver (RF
Dave,
Lyle confirmed that the mic jack in the K3 is wired for Elecraft - just
like the K2 with all pins of the mic configuration header plugged
straight across.
That wiring is not for all Kenwood mics. Kenwood mics with an internal
preamp expect to have voltage on pin 5, and the Elecraft
Gary,
Yes, the K3 does not have a mic configuration header like the K2. The
mic jack is wired for the Elecraft pinout (per Lyle Johnson) and those
wanting to use a mic with a different wiring scheme will either have to
re-wire the mic plug or use some sort of adapter.
It certain eliminates
Mike,
It's my understanding that the MODE is a function of the chip being
used. At this time I know of three Ultimatic units. The cube keyer
that goes with that mini Palm paddle key (the newer cube), the
offerings from Jackson Harbor - I think the PK4 chip (that's used the
new Palm), and
The K1EL keyers also support Ultimatic mode. They are small inexpensive
PC boards. I use the K12 to provide Ultimatic mode, much easier for me.
I too would like to see the KX1 and K1 rigs provide Ultimatic keying.
The K2 is not a problem for me - the external keyer works fine, but it
would
Hello all,
I will start my AT hike tomorrow and hike around 40 miles over four
days. I'll start in the Town of Duncannon, PA and end at Swatara State
Park, PA. This hike will take me through Anthony's Wilderness which is
one of the most beautiful parts of the AT in PA.
I'll have company as
Well done, Bill. This again shows the importance of real life
measurements... and why I didn't order any filters until more is known
about them.
Anybody interested in the subject of filter design must read the article
by list member Jack, K8ZOA in the current QEX. It gives a lot of
valuable
Shouldn't Elecraft decide on a standard microphone
connection and stick with it?
Dave,
They did. It's the same default mic configuration as the
K2, which happens to be the same as Kenwood.
73 and Tnx
Greg
AB7R
On Mon, 07 May 2007 07:32:16 +0100
Dave G4AON [EMAIL PROTECTED]
I bought a SABRENT SBT-USC1K USB-COM adapter from
www.newegg.com back in Mar 2005. Works great under XP
Home, and Pro. Installs as a Prolific adapter, which
seems to be one of the better ones. Total cost incl
S/H was a tad over $15 USD. No problems using it w/my
IC-703+, FT-817, or K2. I fully
Hi Chris,
I'm just outside of Chester (approx 30-40 minutes away) if you need
some where to throw the antenna up and don't mind travelling i know a
very good spot about 1/2 mile away from me. If you want give me a
ring on my mobile number which is in my signature.
73 Gary G7USC
Chris K6DBG
This I have noticed during my own IP3 measurements on my
FT-1000D, not as much as 16dB but around 3 dB.
This was with the INRAD roofing filter and 2 kHz offset.
in any case this was enough for me not to use the filter.
I´m eagerly waiting for measurement figures on the K3.
Beats me why they
Hat tip to Larry ... now all I need is a commission on every QEX sold ...
Crystals are non-linear and their motional parameters are, to some
degree or other, a function of drive voltage. Since a filter's loss is a
function of its motional parameters, the corollary to that is
intermodulation
The IMD contributed by inductor cores used in the front-end selective
circuits is often not taken into account either, or for that matter any core
within the signal path. They can bite.
73,
Geoff
GM4ESD
Larry Phipps wrote:
This is a subject which seems to be gaining in importance as
Bernie,
The keyboard would plug into a connector on the bottom of
the radio, not the CW key jack.
BTW...wild-eyed can be good!
Tnx and 73
Greg
AB7R
On Mon, 7 May 2007 08:01:45 -0700 (PDT)
Bernard Gaffney, N8PVZ/QRP [EMAIL PROTECTED] wrote:
I've not read anything specific on how the
SM2EKM:
I´m eagerly waiting for measurement figures on the K3.
Beats me why they can´t be presented, that I don´t understand
at all, after all it´s no rocket sience.
I'm surprised that so many roofing filters (and the K3 itself) have been
designed and offered for sale before the
On May 7, 2007, at 7:20 AM, Thom LaCosta wrote:
On Sun, 6 May 2007, Brian Lloyd wrote:
But getting back to the question, insofar as the K3 is concerned,
it is doing serial async RS-232. That is pretty generic. Virtually
any one-USB-to-one-serial-port adaptor is going to work with your
AE5X:
I'm surprised that so many roofing filters (and the K3 itself) have been
designed and offered for sale before the specifications are known/posted.
Seems like the reverse order would have been more appropriate.
I was also concerned about so many filters until I realized
Elecraft
Ron wrote:
FM repeaters, for example, sometimes use the beep to signal when the
repeater drops the carrier, since that happens after a delay following
the last transmission.
Most repeater systems which generate that beep do so to indicate that the
time-out timer (TOT) has just reset, well
Adam (VA7OJ/AB4OJ) wrote:
It is highly significant that professional receivers manufactured by the
likes of RS, Rockwell-Collins, Racal and Harris have a single roofing
filter. This filter is typically 12 to 16 kHz wide, to pass multi-channel
ISB, VFT (multiplexed teletype) and high-speed
Off Topic but with so much expertise flying around I thought I would ask how
mechanical filters compare with crystal filters.
I think they were fairly low in frequency (455kHz?), so, not suitable in the
present discussion, but it would be good for our education at least.
David
G3UNA
Dave G4AON wrote:
Adam
a friend has a
well maintained Racal RA1792 military receiver which is hopeless
compared to even moderately good amateur gear such as his Kenwood
TS-850, I appreciate the 1792 wasn't one of the better Racal receivers
but they weren't cheap.
If things in the Mother
Its my understanding that they are not great other than
they do have steep skirts.
The R390 used IF transformers (tuned circuits) while
the R390A had mechanical filters.
The R390 was judged to work better, and the R390A was actually
designed to reduce cost through the use of the mechanical
Ok, I wont stop thinking about it till I get one,
there is nothing to be done about it.
I was wondering if anyone had a good idea what is going on
with the knobs on the K3.
The bottom row, speed/in/delay and out/power/monitor.
Mic comp is also in there, so somehow the knobs do
keying speed, in
On May 7, 2007, at 11:16 AM, Thom LaCosta wrote:
On Mon, 7 May 2007, Brian Lloyd wrote:
I suspect you will find that the KUSB won't work either.
I suspect you are running Windows.
Thought I had made it clear when I first posted about it.
Sorry. There have been several go-rounds on this
Brett,
I will post a detailed explanation on the FAQ this evening
sometime. But for a short answer...The two bottom knobs
are transmit controls and function based on current
operating mode. The knobs function as the same tap and
hold method as buttons. For example, the bottom left
button
If my CAD computer design days don't fail me, I recall
8-pole type filters - had much steeper skirts, but
not so hot passbands, sort of ripply. Having already
forgotten the spec on group-delay (phase?) - I'll
have to look that up.
Fred, N3CSY
__
Passband ripple is more a function of the filter design parameters--was
it designed as a Chebyshev with 1 dB passband ripple, or a Butterworth
with a flat passband, or a Gaussian with a rounded passband, etc. And,
of course, those parameters govern also how fast the skirts roll off
and, of
For those having withdrawal symptoms from not having a hot soldering
iron in their hands recently, I'm now accepting orders for a new
kit--the Z100 CW tuning aid.
Build time is between 2.5 and 3.5 hours and the kit is suitable for
beginners as well as experienced kit builders. No toroids to
Whew! The last week has been a tidal wave of interest, orders and questions.
There has been a lot of discussion and speculation on the list lately
about the necessity for narrow filters ahead of the K3's DSP filtering
and the impact of various filter bandwidths on receiver IMD. This in
turn
On Mon, 7 May 2007, Brian Lloyd wrote:
I think you mean that many no longer use RS-232 serial. I agree with you that
RS-232 no longer makes a lot of sense.
Yes, another famous TLC typo (g).
If I can't a converter to work, I'll get a card and waste a slot
First thing to do is go to
Windows loads USB drivers based on the vendor id and product id reported by
the device. Are you implying that MacOS and Linux do it differently, by
saying the driver used is based on the chip?
73,
Jim
So, getting USB to work depends on the following:
1. the chip(s) implementing the USB
WA6HHQ:
We were very careful not to make the same mistakes
made by other radio designs.
Thank you Eric! Sorry for being paranoid but
the old axiom Fool me once...shame on you. Fool me
twice...shame on me. applies to me personally since
I have been burned before...hence my caution.
A lot of PDFs are available that are not searchable. ALL the Elecraft PDFs
(and any I produce too) are searchable. It's the only sane way to do it, but
it's certainly not the only wayg.
Dan / WG4S / K2 #2456
-Original Message-
From: Ian Stirling [mailto:[EMAIL PROTECTED]
Sent: Monday,
I was also concerned about so many filters until I realized
Elecraft has actually leveraged the Inrad 7XX series of filters
offered for the 8.215 MHz IF of the FT-1000 family. I suspect
This is an interesting point! Makes me wonder about the 1.8kHz filter
for SSB contesting.
WA6HHQ:
Notes:
Since we also transmit through this (2.7 kHz) filter...
Will it be possible to transmit CW through
a narrower filter than the 2.7 kHz to even further
minimize transmitted key clicks and phase noise?
If so, how low in BW could we go before causing
problems? 1 kHz, 500
On Sun, 6 May 2007, Don Wilhelm wrote:
Thom,
I guess I should have said *WILL* know - I don't know the answer yet, but I
have faith that the answer will be available.
Maybe Elecraft will ship me a KUSBI am trying to find my wrap plug. I'd
like someway to test the serial/usb convertor.
Bill,
Setting the TX filter for CW is a menu config option. I'm
not sure what testing as been done yet to outline the TX
characteristics of the narrower filters though.
73,
Greg
AB7R
On Mon, 07 May 2007 17:43:14 -0400
Bill Tippett [EMAIL PROTECTED] wrote:
WA6HHQ:
Notes:
Since we also
Linux uses vendor and product id as well, but there is wildcard
matching, so the driver is loaded based on the match. Linux has a more
flexible architecture for USB hotplug, so it is up to the distribution
or the upstream provider of the USB system to decide what driver to
load, not the
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Help:
I buy a K3 and sell my K2 in EU :
recently built and aligned ( # 5632 ) by an experienced US builder and perfectly
working.
Options : SSB, DSP, internal ATU, 160 mtr RxTx module, internal battery, RS232
I/O interface.
I also checked OK the main specs in my measurement lab : MDS, BDR,
Hi,
I hope I am not over looking anything the FAQ or the stream of mails
during the last several days. If not, this might be something for the
FAQ.
If I have understood correctly, the filters which one wants to use for
TX must be in the standard receiver and not in the KRX3 .
In my case that
Greetings Elecrafters! Just received my TenTec 701 hand mike in the mail
today, for use with my K2. I am going to jumper the K2 straight across (the
Elecraft mode), and rewire the 701 to fit it. Can anyone confirm the wiring
on the 701? I think it is:
Braid - Ground
Black - PTT
Red -
you are correct. Kurt - K0ARO Braid - Ground
Black - PTT
Red - Power
Yellow - Microphone
Please confirm if you are able. Thanks in advance.
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WA6HHZ explained We chose INRAD as our OEM 8-pole crystal filter
supplier because of their excellent filter performance.
I hope Elecraft will consider offering the Inrad 1.8Khz 8-pole filter
8.215Mhz if (711-B) for the K3, or even something narrower, for ssb
contesting. I assume the K3 will be
Eric
You mention a 2.1 SSB filter !!!Will this be another option ?
73
JOHN VK4OQ
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Wayne, Eric, et al:
I'd love to see (hear) an audio file posted (FAQ?) demonstrating the very
fast and much faster than the K2 QSK at various speeds (40wpm and up).
Please make sure there is another QSO on frequency. :-)
thanks,
de Doug KR2Q
___
This little thread has got me alarmed. In fact when I looked once more
on the Elecraft site (to see if I could in fact theoretically afford a
K3) I now see that Japanese orders can ONLY be made through the
official Japanese distributor.
Note: All Japan orders (including K3) must be placed through
We will not be entering into any exclusive dealer relationships in
Europe. Regardless of who may be selling K3s Europe, we will always
accept direct Internet orders.
73, Eric WA6HHQ
Elecraft
Dominic G4SLW wrote:
I urge Elecraft NOT to enter into any exclusive deal with a UK based
radio
Yes, it has been added to the K3 order form at:
http://www.elecraft.com/elecraft_prod_list.htm
73, Eric WA6HHQ
---
john bazley wrote:
Eric
You mention a 2.1 SSB filter !!!Will this be another option ?
73
JOHN VK4OQ
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Elecraft mailing
Folks,
I recall seeing a post sometime back about reducing the input to the
N0SS tuning indicator, but I have not been able to locate it.
As I recall it was only a series resistor, but can someone tell me the
value used before I begin re-inventing the wheel.
While I have K2 SN 00020 open
Great Don. Thanks!
73,
Mike
N4JX
- Original Message -
From: Don Wilhelm [EMAIL PROTECTED]
To: Mike Geddes [EMAIL PROTECTED]
Sent: Monday, May 07, 2007 7:23 PM
Subject: Re: [Elecraft] TenTec 701 Hand Mike wiring
Mike,
You are correct - wire the Yellow lead to pin 1, Black to pin
Hi Greg,
I assume that the SO-239s in the K3 are screwed in
place (ala the KPA100), not riveted...
If this is the case, it really shouldn't be too
difficult for many Elecraft builders to just install
the N connector if so desired, should it? ;o)
Wish I could be at Dayton this year!
Thanks for
In a message dated 5/7/07 10:05:21 AM Eastern Daylight Time,
[EMAIL PROTECTED] writes:
I'll start in the Town of Duncannon, PA and end at Swatara State
Park, PA.
How will you cross the Susquehanna River?
Good luck and enjoy the trek.
73 de Jim, N2EY
Don,
You cannot possibly imagine how pleased I am to be able to answer one of
YOUR questions!
The resistor is a 93.1 K and is supplied as a SMD.
73,
Tom
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Don Wilhelm
Sent: Monday, May 07, 2007 8:04 PM
Don,
As I look over the photo that came with the little SMD I see that there are
really two options, one placing the SMD on the N0SS board and another
putting a couple of 47 K resistors in series on the K2 board where the
output goes to the N0SSoard. So, I guess the exact value isn't critical
Toby,
Transmit filtering is accomplished in DSP and with the crystal IF roofing
filters ON THE MAIN RX board.
If you have the subreceiver option installed, all you have to do is select
VFO B to use it. The RX filters on the sub RX board will then come into
play, but you must remember that only
Tom and all,
Thanks to all who responded. I promise to make a permanent note of it
so I can refer others to it should they ask (I just can't remember
everything, and I have earned the 'senior moment' excuse to fall back on
if necessary G).
The collective memory of this group is a valuable
Hi Greg Lyle,
Does this mean that one can not reconfigure the radio so that either
RX is considered to be the main RX? In other words, one can not
directly tune the KRX3 using the large knob?
It would be nice if one choose (independent of the logical VFOs A B)
which RX is tuned by which
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