[Elecraft] KH6/ZL K2

[Ron]

Hi
My K2 #5577 will be holidaying in Hawai for a week as from the 20th of 
this Month. Unfortunately I won't be going with it, but keep and ear out for 
a KH6/ZL1PC. I am sure he would be very pleased to hear from you.
I believe the main band of operation will be 40m with possible excursions to 
higher Bands if condx permit.

The mode??..CW of course.
Cheers.Ron ZL1TW

___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft


Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

[Elecraft] K2 deaf on 30m and 12m

[Dr. Werner Furlan]

hi all, 

I am back from a trip to Panama and the K2 did a good job especially on 40 
and 20m, had S7 contacts to Europe with 10W. 
But I also found out that the receiver of the K2 is deaf on 30 and probably 
also on 12m band.  Transmitting seems to work fine, I can measure full 
output on all bands. 
Where should I start to search?

73! de Werner OE9FWV

-- 
I can't walk on water, but I can stagger on alcohol.


Email powered by Pegasus Mail free at 
Homepage: 
Fone +43 5522 75013
Fax +43 820 555 85 2621
Mobile  +43 664 6340014
Elecraft K2 #5203

___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Re: [Elecraft] K2 deaf on 30m and 12m

[Don Wilhelm]

Werner,

Since there is no relationship between 30 meters and 12 meters in the 
hardware, then I suggest that you first check the RANT menu setting for 
those bands.  Problems like this are usually the rresult of 
inadvertently setting RANT (receive antenna) to ON for the bands that 
seem 'dead'.


Just for those who are wondering, the 30 meter bandpass filter is shared 
with 20 meters, and the 12 meter bandpass is shared with 10 meters - if 
there is a hardware failure, both bands would likely be affected and 
both transmit and receive would fail.


73,
Don W3FPR

Dr. Werner Furlan wrote:
hi all, 

I am back from a trip to Panama and the K2 did a good job especially on 40 
and 20m, had S7 contacts to Europe with 10W. 
But I also found out that the receiver of the K2 is deaf on 30 and probably 
also on 12m band.  Transmitting seems to work fine, I can measure full 
output on all bands. 
Where should I start to search?


73! de Werner OE9FWV

  

___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft


Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Re: [Elecraft] Conception of a K2

[Kurt Pawlikowski]

John, Et Al,

   I am reading some really good ideas. Here's one I used...

   While building my KX-1: When I conducted my inventory, I taped the 
resistors, inductors and capacitors right to the pages of the book. 
Okay... A little funky, but 1) I knew the inventory was correct when I 
was done (no open spaces!) and 2) where there is a question about a 
component (some are different wattages or unusual markings), it helped 
to see that I already had a space "filled." For large quantity 
components, I had old plastic pill containers (I tend to knock things 
over). 3) When the assembly instructions called for a component, I 
pulled if from the tape. I could have also checked off the component ID 
on the page. As it happens, I didn't do the checking off part, but a 
more Monkish person might, and it might help keeping one from using the 
wrong part (i.e., looking for L2 and seeing that it's missing...). 
Anyway, it is a more through double check.


   Hope that's helpful to someone... {'-)

   Regards,

   kurtt

   Kurt Pawlikowski, AKA WB9FMC
   The Pinrod Corporation
   [EMAIL PROTECTED]
   (773) 284-9500
   http://pinrod.com

John Huggins wrote:

OK so I have decided to buy the base K2 kit and build it along with my
son; He needs to see a process like this unfold.

I have read the various FAQs, tips, etc.

I am not new to kit building.

We have a good soldering station.

If the K2 works out well we will use it on CW for a while and then add
enhancements: SSB first then others (perhaps DSP, 160M, 60M-Xvrter,
100Watts)..

Are there tools or tips I am missing before I drop the coin?

John
___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft


Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

  

___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft


Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

RE: [Elecraft] Conception of a K2

[Darwin, Keith]

Tape - cardboard - plastic - paper - A

My ESD training (what little I've had) is causing all sorts of alarm
bells to go off!  I fear that many of us have taken techniques that
worked fine in the pre-ESD days and are applying them in cases where
they are dangerous.

Yea, I know that caps (most at least) and resistors are not ESD
sensitive, but that partially assembled K2 board, already populated with
some ICs is.

When I did my K2, I had it on a grounded ESD mat and I wore a wrist
strap the whole time.  I stored all my parts in metal mixing bowls or
just laid them on the mat.  I'm sure this was overkill but it was easier
to use good ESD practice than to try to discipline myself to apply it
only when it was needed.

- Keith N1AS -
- K2 5411.ssb.100 -

-Original Message-
While building my KX-1: When I conducted my inventory, I taped the
resistors, inductors and capacitors right to the pages of the book. 
___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

[Elecraft] K2, KAT2 and displaced choke balun feed

[Roelof Bakker]

Hello all,

I have just finished K2 # 6177 and with all HF bands to my disposal, I am 
looking for a more convenient way to feed my doublet wire antenna with open 
feeder. My shack is in the dining room (my wife is very forgiving) and the 
antenna feed-in is on the window sil at the opposite side of the room. Hence 
I use 6 metre coax to get there.


Has anyone tried a K2 and KAT2 fed into a substantial length of 50 ohm coax
with a choke balun mounted at the other end, connected to an open line
feeder? So far I have used a manual balanced tuner on the window sil, but
that implies getting up and walking to the tuner when changing bands.

Thank you in advance,

Roelof Bakker, pa0rdt
G-QRP-C 6019
QRP-ARCI 8405
Middelburg, Netherlands
JO11tm 



--
Mijn Postvak In wordt beschermd door SPAMfighter.
203 spam-mails zijn er tot op heden geblokkeerd.
Download de gratis SPAMfighter via deze link: http://www.spamfighter.com/lnl


___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft


Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Re: [Elecraft] 14.03 MHz Continuous Tone/[EMAIL PROTECTED]

[Alan Biocca]

My experience with network gear is that different designs use 
different frequencies for the oscillators and such, so it is likely 
that both of you are correct! Newer gear tends to have higher 
frequencies and lower power in the general trend, so changing or 
upgrading gear may help the level of interference. Interestingly, 
lower priced gear generally uses higher levels of in-chip integration 
and has less effective antenna area. Of course really low cost gear 
may skip some filtering, so testing is really the only way to tell. 
Perhaps we should collect info on which switches seem to be better or 
worse and see if there is a correlation between different people's 
experience and maybe provide some useful info.


If the birdies were net traffic related they would vary over time, 
and probably would not be referred to as 'birdies' which implies a CW 
note. The thing we are most likely to hear is the oscillators feeding 
the chips - elements with higher power and more radiative capability 
over multiple traces on the pcb, etc. The chips that do the 
encode/decode generally develop the different frequencies for 
different network speeds internally, so those signals would be lower 
power and have negligible antennas and not tend to be radiated. 10 
and 100 megabit twisted pair network signals are transformer coupled, 
and with the FCC certification requirements of this gear those 
transformers are likely designed to help reduce EMI at HF, I don't 
know the precise characteristics, but common mode EMI is something 
they are designing to avoid. I have not looked at the details of Gig 
hardware interfacing yet, but the requirements of network ground 
independence generally demand isolated connections, so they are 
likely transformer coupled as well, and are also designed to reduce 
EMI to meet specs.


None of the noises I hear seem to be net traffic related. Those would 
tend to be very brief most of the time.


The design of these network system components varies with their 
bitrate, manufacturer, model and age. Higher bitrate capable devices 
tend to have different basic oscillators. In general the higher speed 
devices have higher frequency oscillators which are often above HF.


Each link has multiple speed capabilities in modern switches, 
independent of the other links.


As Leigh hints, Many stations have inadequately balanced feedlines 
(whether coax or balanced lines), so noise and carriers in the shack 
conduct out to the antenna and come back into the receiver rather 
easily. An effective balun can help here, and ferrites on the lines 
coming out of the switch.


Distance to the antenna and radio all matter to some degree, as both 
radiated and conducted RFI are attenuated by distance. Distance to 
the radio should not matter, but many stations use inadequate baluns 
and so are quite susceptible to common mode noise and EMI at the 
radio. (Note that no balun at all is also an inadequate balun). Jim's 
paper, link below, has a lot of good information in it, and agrees 
that most baluns are inadequate (less than 5,000 ohms choking Z).

.
In my shack these birdies are all extremely weak and readily covered 
by minor band noise. Two switches and the cable modem and cable entry 
and several computers plus the wifi are all within a six foot sphere 
including my HF station, and the antenna is 30 feet away fed by 6 
feet of coax to a substantial balun to 30 feet of balanced line to 
the lower leg of the inverted L fed against radials. Just a data 
point, each station will be different. Network gear here is Linksys 
and Netgear both of 100 megabit fairly recent vintage. Cable modem is 
probably the only 10 megabit device, though perhaps the networked 
printer is also 10, also within this six foot sphere.


As Leigh mentions, the best way to force things to a certain speed is 
to use a 10 megabit hub. However this does force to half duplex which 
is a pretty low level of performance. Adequate for your internet 
connection but it will take a long time to do your backups or 
transfer large files over it. Also note that hubs that do 100 
megabits often have a funny mode where different ports run at 
different speeds and the hub speed shifts, so you will have a real 
mix, and of course switches negotiate each port independently. The 
net speed is 10 megabits when these hubs have at least one 10 megabit 
device connected, and the 100 megabit devices are forced to wait 90% 
of the time so the hub can translate their data to the lower speed.


Another technique is to put things on wifi and reduce or eliminate 
the wired network. 2.4 GHZ doesn't generally bother HF.


73,

-- Alan, wb6zqz


At 11:52 PM 8/14/2007, Leigh L. Klotz, Jr. wrote:

Jim,
I know you and I have a different understanding, that he birdies 
come from 100Mb (my belief) and that they come from 10Mb (yours), 
but I would like to straight out a couple of issues, perhaps minor ones.


1. I didn't write the second quoted paragraph below about 6' 
distan

Re: [Elecraft] K2 deaf on 30m and 12m

[Dr. Werner Furlan]

Don, 

as usual, you are perfectly right. 
the RANT was on, and no antenna connected.   blush


73! de Werner OE9FWV


Don Wilhelm schrieb am 15 Aug 2007 um 9:00:

> Werner,
> 
> Since there is no relationship between 30 meters and 12 meters in the
> hardware, then I suggest that you first check the RANT menu setting for
> those bands.  Problems like this are usually the rresult of inadvertently
> setting RANT (receive antenna) to ON for the bands that seem 'dead'.
> 
> Just for those who are wondering, the 30 meter bandpass filter is shared
> with 20 meters, and the 12 meter bandpass is shared with 10 meters - if
> there is a hardware failure, both bands would likely be affected and both
> transmit and receive would fail.
> 
> 73,
> Don W3FPR
> 
> Dr. Werner Furlan wrote:
> > hi all, 
> >
> > I am back from a trip to Panama and the K2 did a good job especially on
> > 40 and 20m, had S7 contacts to Europe with 10W. But I also found out that
> > the receiver of the K2 is deaf on 30 and probably also on 12m band. 
> > Transmitting seems to work fine, I can measure full output on all bands.
> > Where should I start to search?
> >
> > 73! de Werner OE9FWV
> >
> >   


-- 
I'm not a complete idiot - several parts are missing.


Email powered by Pegasus Mail free at 
Homepage: 
Fone +43 5522 75013
Fax +43 820 555 85 2621
Mobile  +43 664 6340014
Elecraft K2 #5203

___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

[Elecraft] Parts-in-waiting storage

[Ken Kopp]

Metal muffin-baking tins are good parts storage ...

A clip lead between your anti-static work mat, the
muffin tin and your wrist-strap connection point help, 
too.


73! Ken Kopp - K0PP
[EMAIL PROTECTED]

___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft


Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

[Elecraft] K1 T-R delay

[Krister Eriksson]

Dear OM:s,

The QSK delay in K1,  how many milliseconds do you prefer to use?

sometimes I found it slow, and sometimes too fast .. 

I run about 20-25 WPM CW.

73, Chris
-- 
Hamradio: SM5KRI
Krister Eriksson

e-mail: [EMAIL PROTECTED]
web: www.qrpadventures.net (site under construction)




___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Re: [Elecraft] K2, KAT2 and displaced choke balun feed

[Robie Elms]

Roelof,

I have used the arrangment you are asking about several times and it has 
worked well for me.  One key point is that baluns are not effective under 
some load conditions, usually when they are transforming high 
impedence/highly reactive loads.So if you encounter problems matching 
the antenna on some bands you can "adjust" the load that the balun sees 
(from the antenna) by adding a short piece of transmission line between the 
balun and the antenna.  This technique uses transmission line properties to 
"transform" the impedence to a value that the balun is more capable of 
handling.  You may find that you need to add a piece to you transmission 
line on one or two bands.  The specific lengths depend on your specific 
installation.  The ARRL Antenna Book is a good place to learn about 
transmission line properties and how to use them.  There are many other 
sources of this information as well.


I hope this information helps.

Robie - AJ4F



- Original Message - 
From: "Roelof Bakker" <[EMAIL PROTECTED]>

To: 
Sent: Wednesday, August 15, 2007 8:44 AM
Subject: [Elecraft] K2, KAT2 and displaced choke balun feed



Hello all,

I have just finished K2 # 6177 and with all HF bands to my disposal, I am 
looking for a more convenient way to feed my doublet wire antenna with 
open feeder. My shack is in the dining room (my wife is very forgiving) 
and the antenna feed-in is on the window sil at the opposite side of the 
room. Hence I use 6 metre coax to get there.


Has anyone tried a K2 and KAT2 fed into a substantial length of 50 ohm 
coax

with a choke balun mounted at the other end, connected to an open line
feeder? So far I have used a manual balanced tuner on the window sil, but
that implies getting up and walking to the tuner when changing bands.

Thank you in advance,

Roelof Bakker, pa0rdt
G-QRP-C 6019
QRP-ARCI 8405
Middelburg, Netherlands
JO11tm

--
Mijn Postvak In wordt beschermd door SPAMfighter.
203 spam-mails zijn er tot op heden geblokkeerd.
Download de gratis SPAMfighter via deze link: 
http://www.spamfighter.com/lnl



___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com 


___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft


Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

[Elecraft] RTTY/PSK31 and the K3

[Lee Buller]

Has any of the field testers taken the K3 on RTTY using a soundcard and 
what-ver-software?  How does it play on RTTY and PSK31?  I am not concerned 
about the internal feature, but how it plays with soundcards and such

Lee


In our day and age it seems that Common Sense is in short supply.  If you don't 
have any Common Sense - get some Common Sense and use it.  If you can't find 
any Common Sense, ask for help from somebody who has some Common Sense.  Is 
Common Sense divine?
___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Re: [Elecraft] 14.03 MHz Continuous Tone/[EMAIL PROTECTED]

[Robie Elms]

Gentlemen,

I have had some success in reducing the level of "unwanted" signals heard in 
my receiver by isolating my antenna from its feedline using common mode 
chokes.  One method of propagation of the signals is up the feedline from my 
house wiring to the antenna.


You should be able to find an article on the net by W1HIS discussing this in 
more detail.  The article is about Common Mode Chokes.


Robie - AJ4F
- Original Message - 
From: "Alan Biocca" <[EMAIL PROTECTED]>

To: "Elecraft List" 
Sent: Wednesday, August 15, 2007 9:02 AM
Subject: Re: [Elecraft] 14.03 MHz Continuous Tone/[EMAIL PROTECTED]


My experience with network gear is that different designs use different 
frequencies for the oscillators and such, so it is likely that both of you 
are correct! Newer gear tends to have higher frequencies and lower power 
in the general trend, so changing or upgrading gear may help the level of 
interference. Interestingly, lower priced gear generally uses higher 
levels of in-chip integration and has less effective antenna area. Of 
course really low cost gear may skip some filtering, so testing is really 
the only way to tell. Perhaps we should collect info on which switches 
seem to be better or worse and see if there is a correlation between 
different people's experience and maybe provide some useful info.


If the birdies were net traffic related they would vary over time, and 
probably would not be referred to as 'birdies' which implies a CW note. 
The thing we are most likely to hear is the oscillators feeding the 
chips - elements with higher power and more radiative capability over 
multiple traces on the pcb, etc. The chips that do the encode/decode 
generally develop the different frequencies for different network speeds 
internally, so those signals would be lower power and have negligible 
antennas and not tend to be radiated. 10 and 100 megabit twisted pair 
network signals are transformer coupled, and with the FCC certification 
requirements of this gear those transformers are likely designed to help 
reduce EMI at HF, I don't know the precise characteristics, but common 
mode EMI is something they are designing to avoid. I have not looked at 
the details of Gig hardware interfacing yet, but the requirements of 
network ground independence generally demand isolated connections, so they 
are likely transformer coupled as well, and are also designed to reduce 
EMI to meet specs.


None of the noises I hear seem to be net traffic related. Those would tend 
to be very brief most of the time.


The design of these network system components varies with their bitrate, 
manufacturer, model and age. Higher bitrate capable devices tend to have 
different basic oscillators. In general the higher speed devices have 
higher frequency oscillators which are often above HF.


Each link has multiple speed capabilities in modern switches, independent 
of the other links.


As Leigh hints, Many stations have inadequately balanced feedlines 
(whether coax or balanced lines), so noise and carriers in the shack 
conduct out to the antenna and come back into the receiver rather easily. 
An effective balun can help here, and ferrites on the lines coming out of 
the switch.


Distance to the antenna and radio all matter to some degree, as both 
radiated and conducted RFI are attenuated by distance. Distance to the 
radio should not matter, but many stations use inadequate baluns and so 
are quite susceptible to common mode noise and EMI at the radio. (Note 
that no balun at all is also an inadequate balun). Jim's paper, link 
below, has a lot of good information in it, and agrees that most baluns 
are inadequate (less than 5,000 ohms choking Z).

.
In my shack these birdies are all extremely weak and readily covered by 
minor band noise. Two switches and the cable modem and cable entry and 
several computers plus the wifi are all within a six foot sphere including 
my HF station, and the antenna is 30 feet away fed by 6 feet of coax to a 
substantial balun to 30 feet of balanced line to the lower leg of the 
inverted L fed against radials. Just a data point, each station will be 
different. Network gear here is Linksys and Netgear both of 100 megabit 
fairly recent vintage. Cable modem is probably the only 10 megabit device, 
though perhaps the networked printer is also 10, also within this six foot 
sphere.


As Leigh mentions, the best way to force things to a certain speed is to 
use a 10 megabit hub. However this does force to half duplex which is a 
pretty low level of performance. Adequate for your internet connection but 
it will take a long time to do your backups or transfer large files over 
it. Also note that hubs that do 100 megabits often have a funny mode where 
different ports run at different speeds and the hub speed shifts, so you 
will have a real mix, and of course switches negotiate each port 
independently. The net speed is 10 megabits when these hubs have at least 
one 10 megabit 

Re: [Elecraft] QSP? relaying ECN check-ins.

[David Wilburn]

I have been working at improving my CW skills for what seems a very long 
time.  I have not checked into a CW net, and I would like to check into 
ECN, but it is admittedly difficult here from the right coast.  I have 
listened one time and was a bit overwhelmed with trying to copy, 
understand, and figure out what I needed to do.


I have looked at traffic net protocols, and I understand that practice 
will improve understanding.  Is it possible to have a script somewhere 
of what will happen, so us newbies / slowpokes can follow along, and try 
to figure out when to send out our call?


My plan would be to listen to the 20m net, and then try to stay awake 
and attempt to check in on the 40m net.  Rig is K2/100 w/80m loop.  So 
main handicap is the operator.


David Wilburn
[EMAIL PROTECTED]
K4DGW
K2 #5982


K9ZTV wrote:
N0SS, being an old and consummate National Traffic System man (as well 
as my cross-town good friend), will, I trust, smile kindly on my 
contribution to this discussion.


This may be a perfect opportunity to educate and train a whole new 
generation of CW operators in long-established, tried-and-tested, ARRL 
NTS procedures.  Just because the exchange of formal message traffic is 
not the purpose of the ECN, does not mean the net itself cannot be 
conducted accordingly.  Likewise, the repetitive use of a few select 
Q-signals by the NCS will not only equip new operators with useful CW 
skills, but also help resolve the relay issues under discussion.
I expect the K3 to bring a lot of new hams to HF CW over the next 
several years, which may also bring them to the ECN.


I would suggest you begin emphasizing that the ECN is a "directed" net 
(QND), which you may believe it already to be, but actually isn't (which 
is why you are experiencing trouble in identifying QNIs).  Stations 
wishing to check into a truly "directed net" transmit nothing until 
instructed to do so in some specific fashion by the NCS.  Such as . . .


The check-in instructions might be geographical :

CQ ECN de N0SS QNA ("answer in prearranged order") FIRST CALL AREA STNS 
ONLY PSE QNI K

CQ ECN de N0SS QNA SECOND CALL AREA STNS ONLY PSE QNI K
etc., etc.,  through all the call areas.  This permits pointing the bean 
in one direction at a time without having to continually swing it 
through the compass rose.


Another method (unique to ECN) might be  . . .

CQ ECN de N0SS QNA KX1 RIGS ONLY PSE QNI K
CQ ECN de N0SS QNA K1 RIGS ONLY PSE QNI K
CQ ECN de N0SS QNA K2 RIGS ONLY PSE QNI K
CQ ECN de N0SS QNA K3 RIGS ONLY PSE QNI K

Many nets have done this for years, it's nothing new, but it IS 
effective, and solves two of your problems: (1) reducing (if not 
eliminating) QRM from stations all over the country trying to QNI at the 
same time; and (2) forcing significant numbers of stations to "stick 
around" until their call area is up to bat, thus providing relay 
stations if such are needed.  But again, it is in an orderly fashion, 
not the chaos it is now.  Two SSB nets I occasionally frequent (Collins 
Collectors Association net and the Interstate Single Sideband Net) have 
done the geographical thing for decades.  The NTS system routinely asks 
for QNI on a QNA (prearranged order) from those stations serving as 
liaisons to higher level nets.  And to make it fair, each week you 
alternate the order, so the zero-call area stations aren't waiting until 
the end all the time.  Likewise, you alternate the rig-order assuming 
your "prearranged order" goes by model.


A companion advantage is the opportunity for CW copy practice for 
newcomers.  The longer they wait their turn, the more CW they will be 
copying, the more Q-signals they will be exposed to, and the less 
intimidated they will be when it comes their turn to hit the key.


Finally, it has always been my personal belief that one of the 
obligations of the net control station is to be HEARD.  This means 
transmitting with more than 100 watts off a dipole at thirty feet.  It 
means an amplifier, especially during sunspot minima.  It also means a 
decent antenna.  Good NCS operators without amplifier capabilities  
should not be excluded, but they should be encouraged to save their 
pennies for one.  They should also be selected on the basis of 
consistently good strength signals and good operating skills.


All of this, of course, is my opinion only, but stems from five decades 
of CW traffic work and serving as Net Manager of two ARRL section nets 
over the years.


73,

Kent  K9ZTV





Tom Hammond wrote:


Hi ray:

K2HYD wrote:

I'm wondering whether some experienced net ops could chime in with 
suggestions for getting more QSP going on the weekly Elecraft CW Net?


I don't really know what the right protocol is, but I still have a 
happy glow thinking about the one time I actually QSP'd for a station 
that NCS couldn't hear. (can't recall whether it was Kevin or Tom 
acting as NCS at that moment). It was a thrill to be able to relay the 
check-in, with my little 

Re: [Elecraft] 14.03 MHz Continuous Tone/[EMAIL PROTECTED]

[Jim Brown]

On Tue, 14 Aug 2007 23:52:04 -0700, Leigh L. Klotz, Jr. wrote:

>I've asked a number of ethernet luminaries to explain to me the source 
>of the birdies, and gotten blanks.

That's probably because they're digital guys, not RF guys. :) They should 
attend one of Henry Ott's excellent classes on EMC. 

There is either a clock or a component of the Ethernet signal that is 
coupled as a common mode current to the Ethernet cable. That cable acts 
as an antenna, and radiates it, and we pick it up on our receiving 
antennas. The Ethernet transmitter and receiver SHOULD be perfectly 
balanced with respect to impedance, but it is not. It is that imbalance 
that causes the radiation. 

I've never found an Ethernet device that doesn't have this problem. From 
a practical point of view, the most effective fixes are to either turn 
them off or stick ferrite chokes on the wires to prevent common mode 
current. Even when you've done that effectively, you may still hear 
radiation from the internal wiring of Ethernet devices that are badly 
shielded and have large internal ground loops. 

73,

Jim Brown K9YC



___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Re: [Elecraft] 14.03 MHz Continuous Tone/[EMAIL PROTECTED]

[Jim Brown]

On Wed, 15 Aug 2007 10:12:41 -0500, Robie Elms wrote:

>You should be able to find an article on the net by W1HIS discussing this in 
>more detail.  The article is about Common Mode Chokes.

Those things we call a "current balun" are common mode chokes. W1HIS's paper 
is good, but my piece has MUCH better measured data on these chokes and how to 
wind them. There are some SERIOUS measurement errors that are the basis of 
W1HIS's work, and they cause his recommendations for how to wind chokes to be 
wrong. Otherwise it's a very good piece. 

BTW -- I recently got email from W2DU, who had just read my tutorial and liked 
it a lot. If you haven't been there, his website is well worth the visit. It 
includes several chapters from his book "Reflections." They are excellent. 

73,

Jim Brown K9YC



___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Re: [Elecraft] Conception of a K2

[Chris Kantarjiev]

> Tools I found useful:
>   - Magnifying ring light

I far prefer an Optivisor. It makes it easy to look at the item
in question with or without magnification, depending on distance -
I can position the workpiece and the instruction manual such that
I can shift my view from one to the other without big head 
movements.

In addition, the swing down extra magnifier is perfect for inspecting
the quality of my soldering after every round - I do this in stages,
rather than trying to inspect the entire board at the end.

73 de chris K6DBG
___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

SV: [Elecraft] Re: K3 question re dual receive

[Björn Mohr]

I wrote a week ago or so;

>>> I plan to use my K3 primarily for low band dxing, so RX antenna
switching will be crucial.

Actually I am a little confused as to how RX signals are routed. The reason
I ordered the KRX3 option was to get RX antenna functionality. Basically I
want to be able to have my TX and RX antenna separated and have the choice
to listen to one or the other or both simultaneously.

Should I cancel the KRX3? <<<


I realize there was an error in my text, I am not questioning my order of
the second RX but I what I wonder is if the KXV3 transverter interface will
bring anything to the table when it comes to the second RX. I have not
ordered the tuner as I don't see any point to tuned on the radio end of the
coax...

My question is, how do I get the functionality I need as described above.


73 de Björn /SM0MDG



___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

RE: [Elecraft] RTTY/PSK31 and the K3

[Ed Muns]

> Has any of the field testers taken the K3 on RTTY using a 
> soundcard and what-ver-software?  How does it play on RTTY 
> and PSK31?  I am not concerned about the internal feature, 
> but how it plays with soundcards and such

I have used the K3 extensively on FSK.  In NAQP RTTY, I used a K3 and a
ProIII.  The K3 was connected directly to the PC soundcard input whereas the
ProIII had an audio isolation transformer in line as well as a JPS NIR-12
audio DSP.  The K3 performed at least as well, if not better than the
ProIII.  Other field testers, e.g., N6XI, use AFSK and therefore are
connecting their K3 to the soundcard input and output will great results.

The K3 is designed for direct connection to soundcards with its LINE IN and
LINE OUT jacks on the back panel.  Each is fed from an audio isolation
transformer inside the K3.  The K3 is the best equipped radio for DATA modes
and direct connection to PC soundcards.

73,
Ed - W0YK

___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

RE: [Elecraft] 14.03 MHz Continuous Tone/[EMAIL PROTECTED]

[Chris Kantarjiev]

> 
> Does anyone know what the signal I am hearing on 14.030 MHz actually is?

100Bt ethernet hardware puts out birdies around this frequency (I have
several such birdies in the house, from 14.028 up to 14.031).

It carries quite far; when we last had the entire house's power off (at
the meter), I still heard them - presumably from one or more of my neighbors.

73 de chris K6DBG
___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Re: [Elecraft] 14.03 MHz Continuous Tone/[EMAIL PROTECTED]

[Leigh L Klotz, Jr.]

In my house, I installed optical fiber when the walls were open for a 
remodel.  I chose unpopular and cheap ST connector style and used 
multimode fiber, which is good only for "short" runs (i.e. not for 
metropolitan wiring.  As a result, I was able to get 10mb and 100mb to 
fiber converters for $30 and cable for free or cheap.  In my shack Linux 
box, I used a fiber PCI for  I paid $10 on eBay.  So, there are no long 
runs of Cat5 anywhere in my house, only short runs from DSL modem to the 
fiber converter and the 802.11 device.


As a result of doing this and switching to 10mb for the places where 
that was fast enough, I have eliminated the birdies I generate.  Now I 
have a directional antenna on 20m and can rotate it to find the null.  
Someday I may go door-to-door and offer "help" but I may wait until 
802.11n comes out and see if I can find a good device, and then 
recommend it as an upgrade.


73,
Leigh/WA5ZNU
On Wed, 15 Aug 2007 7:01 am, Alan Biocca wrote:
Another technique is to put things on wifi and reduce or eliminate the 
wired network. 2.4 GHZ doesn't generally bother HF.



___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft


Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

RE: [Elecraft] RTTY/PSK31 and the K3

[James C. Hall, MD]

Hi Ed:

I love RTTY contesting as well and a K3 is certainly in my future. I'm just
now dipping my toes into SO2R. One question - are you able to go the full
100 watts in contests on RTTY ? If so, do you provide further cooling - more
fans, liquid cooling blocks on the finals !? :) Or do you trickle feed an
amplifier to say, 150 watts ?

73, Jamie
WB4YDL

-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Ed Muns
Sent: Wednesday, August 15, 2007 11:51 AM
To: 'Lee Buller'
Cc: 'Elecraft Reflector'
Subject: RE: [Elecraft] RTTY/PSK31 and the K3

> Has any of the field testers taken the K3 on RTTY using a 
> soundcard and what-ver-software?  How does it play on RTTY 
> and PSK31?  I am not concerned about the internal feature, 
> but how it plays with soundcards and such

I have used the K3 extensively on FSK.  In NAQP RTTY, I used a K3 and a
ProIII.  The K3 was connected directly to the PC soundcard input whereas the
ProIII had an audio isolation transformer in line as well as a JPS NIR-12
audio DSP.  The K3 performed at least as well, if not better than the
ProIII.  Other field testers, e.g., N6XI, use AFSK and therefore are
connecting their K3 to the soundcard input and output will great results.

The K3 is designed for direct connection to soundcards with its LINE IN and
LINE OUT jacks on the back panel.  Each is fed from an audio isolation
transformer inside the K3.  The K3 is the best equipped radio for DATA modes
and direct connection to PC soundcards.

73,
Ed - W0YK

___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

RE: [Elecraft] Re: K3 question re dual receive

[Ed Muns]

> >>> I plan to use my K3 primarily for low band dxing, so RX antenna
> switching will be crucial.
> 
> Actually I am a little confused as to how RX signals are 
> routed. The reason I ordered the KRX3 option was to get RX 
> antenna functionality. Basically I want to be able to have my 
> TX and RX antenna separated and have the choice to listen to 
> one or the other or both simultaneously.

The RX Antenna input comes with the KXV3 option, not the KRX3.

> Should I cancel the KRX3? <<<

Having the KRX3 in a K3 could be based on a lot of things.  But, if the
absolutely only reason you ordered it was to get the RX Antenna capability,
then what you need instead is the KXV3.

> I realize there was an error in my text, I am not questioning 
> my order of the second RX but I what I wonder is if the KXV3 
> transverter interface will bring anything to the table when 
> it comes to the second RX. I have not ordered the tuner as I 
> don't see any point to tuned on the radio end of the coax...

The KXV3's capability with the second receiver is still not fully defined.
What is defined is that the RX ANT input will be routed to both the main and
second receiver if the KRX3 is configured for "shared mode".  If the KRX3 is
in "auxiliary mode", then it uses the input connected to the KRX3 secondary
coax, normally the non-TX SO239 on the KAT3.  But, as Wayne has discussed
several times on this reflector, that KRX3 secondary coax could be connected
to another location, such as a BNC installed in the currently vacant AUX RF
position on the rear panel.  That would allow you to have a different RX
antenna on the second receiver than what is on the main receiver.  It would
also allow you to have a RX antenna on the second receiver, while the main
receiver uses the TX antenna for receive.  An example of what is not yet
determined in the KXV3 functionality is whether duplex TX/RX can be done
with the transverter input and output.

> My question is, how do I get the functionality I need as 
> described above.

I'm hesitant to say with certainty because there is a lot of information
missing from these emails.  But, I "think" all you need is the KXV3 option
if all you want is to have a separate RX antenna from your transmit antenna.
But, there are many uses of a second receiver, e.g., diversity reception
that has also been discussed on this reflector, and I can't tell from your
emails how the KRX3 would be useful to you.

73,
Ed - W0YK

___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

RE: [Elecraft] RTTY/PSK31 and the K3

[Ed Muns]

> I love RTTY contesting as well and a K3 is certainly in my 
> future. I'm just now dipping my toes into SO2R. One question 
> - are you able to go the full 100 watts in contests on RTTY ? 
> If so, do you provide further cooling - more fans, liquid 
> cooling blocks on the finals !? :) Or do you trickle feed an 
> amplifier to say, 150 watts ?

I run SO2R and my goal is to be transmitting 100% of the time on one or the
other transmitter.  That represents, at most, a 50% duty-cycle for the K3
which it can handle without the internal fans even getting up to their
higher speeds.  (BTW, those higher speeds are VERY quiet.)  We have done
tests with key down for 10 minutes on the K3 and the PA temperature is still
well below max, so I wouldn't even expect runaway in this extreme case.
Even the most severe RTTY operation won't stress the K3 to this extent.
There is no published spec yet on this, but my experience to date is that
the K3 reminds me of the old Alpha amplifier ads with the brick on the key
at maximum output for indefinite periods of time.

In sum, I'd not worry a bit about running the K3 at full power on RTTY, with
no additional fans or cooling.  Obviously, it would be prudent to have
enough clear space around the K3 to allow its internal cooling system to
work.

73,
Ed - W0YK

___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Re: SV: [Elecraft] Re: K3 question re dual receive

[Ken K3IU]

This is what Wayne posted on Aug 9th.
73, Ken K3IU


On Aug 9, 2007, at 3:13 AM, Bill Tippett wrote:


/

/>/
/>/ N6KR:
/>>/ The KRX3 subreceiver can either share the main receiver's RF path or 
/>>/ get its signal from the unused KAT3 ATU antenna jack.

/>/
/>/ Can't we use the RX antenna port on the $79 KXV3?
/
Hi Bill,

If there's no KAT3 installed, you still have a few options.

Normally, the sub will share the RF path of the main receiver, and that 
includes the RX ANT. I.e., if the main RX is running from the RX 
antenna jack, then the sub will, too, if it's sharing RF.


You can switch the KRX3 to its auxiliary input, but if you don't have a 
KAT3, the question is what to connect it to. The present KXV3 doesn't 
have provisions for routing RX ANT only to the sub. But there are three 
other sources you could use for the KRX3's aux input: (1) the SO239 at 
ANT2 (normally supplied only with the KAT3, but you could order one and 
install it just for the sub); (2) a BNC jack, below ANT2 (labeled "AUX 
RF" and not normally supplied, but we could provide one on request); 
(3) the BNC jack on the KXV3 normally targeted as the buffered I.F. 
output (but you'd lose I.F. out capability).


Also, if there's enough demand for an antenna-switch-only version of 
the KAT3, we could offer one in the future. You'd then be able to 
connect the KRX3 to the unused antenna jack, as with the KAT3.


73,
Wayne
~
N6KR



Björn Mohr wrote:

I wrote a week ago or so;

  

I plan to use my K3 primarily for low band dxing, so RX antenna


switching will be crucial.

Actually I am a little confused as to how RX signals are routed. The reason
I ordered the KRX3 option was to get RX antenna functionality. Basically I
want to be able to have my TX and RX antenna separated and have the choice
to listen to one or the other or both simultaneously.

Should I cancel the KRX3? <<<


I realize there was an error in my text, I am not questioning my order of
the second RX but I what I wonder is if the KXV3 transverter interface will
bring anything to the table when it comes to the second RX. I have not
ordered the tuner as I don't see any point to tuned on the radio end of the
coax...

My question is, how do I get the functionality I need as described above.


73 de Björn /SM0MDG

___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft


Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Re: [Elecraft] QSP? relaying ECN check-ins.

[Tom Hammond]

Hi David:

I have been working at improving my CW skills for what seems a very 
long time.  I have not checked into a CW net, and I would like to 
check into ECN, but it is admittedly difficult here from the right 
coast.  I have listened one time and was a bit overwhelmed with 
trying to copy, understand, and figure out what I needed to do.


I have looked at traffic net protocols, and I understand that 
practice will improve understanding.  Is it possible to have a 
script somewhere of what will happen, so us newbies / slowpokes can 
follow along, and try to figure out when to send out our call?


I thought Kevin offered something along this line on the web site he 
references at the end of each weekly ECN announcement...


Shoot...!  Thought I had a copy of his last announcement, but must 
have dumped it.


My plan would be to listen to the 20m net, and then try to stay 
awake and attempt to check in on the 40m net.  Rig is K2/100 w/80m 
loop.  So main handicap is the operator.


In general, we have a main NCS (Net Control Station), who is Kevin 
KD5ONS. After he picks up as many stations as he can easily find, 
he'll usually try to turn things over to me (N0SS, in the midwest) 
for a second shot.


The general call is "CQ ECN DE {call} QNI? K", "CQ ECN EAST DE {call} 
QNI? K" or something very similar to that.


As soon as the "K" is sent, we are listening for stations wishing to 
QNI (check in) to send a 'hail sign', usually one or two characters 
from their callsign (such as "DG", if you were attempting to QNI).


When the NCS hears the hail from another station he will respond to 
that station by sending back the hail which he heard (or which he 
THINKS he heard). That's all... usually no other response from NCS.


If you hear the NCS respond with your hail, that's your cue to send 
"DE K4DGW David in FL Kx (fill in the Elecraft model #) NR (fill in 
your serial #) K".


Assuming NCS gets all of your info, he will acknowledge you and 
welcome you to the net, possibly asking for more comments or info. 
Otherwise, you will often be asked to stand by with the "AS" prosign, 
or you may be allowed to check out as well.


If the NCS does NOT copy your info, he may ask YOU for a repeat, or 
may ask someone else to relay (QSP or QNB) is possible.


If you are trying to QNI at the first of the net, when there may be 
many other stations trying to QNI as well, you may be well down in 
the 'pile' of callers, so it may take a while for the NCS to dig down 
to you.  BE PATIENT, and PERSISTENT!  Wait for the next call for 
check-ins and try again!  Repeat as required unless it's obvious that 
the NCS is not hearing you. We TRY to pick up all callers, but 
sometimes we just cannot pull everyone out of the noise (summertime 
QRN out here in the midwest often runs S7-S9, even on a 'quiet' 
night. If I don't get any responses to calls for QNI, I will usually 
ask for any relays of stations I can't hear.


When I am NCSing, I try to set my character speed at 20 WPM with 
added spacing between characters, for an equivalent speed of about 
15-16 WPM. If that speed is too fast for you, feel free to send at 
whatever speed is comfy for you and we will try to match YOUR sending 
speed. If we don't BE SURE to ask for a QRS... no dishonor in asking that!!!


Hope this helps a bit.

73,

Tom Hammond   N0SS

___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft


Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Re: [Elecraft] Conception of a K2

[Kurt Pawlikowski]

Keith,

   You are, of course, right, but 1) I do have an ESD mat (and use 
it!), and, 2) no, I didn't tape down the "sensitive" components. I will 
say this though: Doing this helped a lot because there are several 
components that could have easily been confused (some inductors and a 
resistor or two), which were not. As far as I know, resistors, 
capacitors and most (if not all) diodes will not be damaged by ESD. 
Note: Diodes will either conduct when forward biased or "zener" and 
conduct when backwards biased - thought I'm not sure about "special" 
diodes [barrier, shotkey (sp?), and the like]. And, normal ESD damage is 
caused by high potentials arching within the component. I believe diodes 
have plenty of capacity to absorb the power, either forward or reversed 
biased. Capacitors will simply "charge" (which is why attaching a 
capacitor to a Van de Graph generator is a Bozo no-no). At any rate, I 
have never heard of any of these types of components being damaged by 
ESD: Has anyone?


   Regards,

   kurtt

   Kurt Pawlikowski, AKA WB9FMC
   The Pinrod Corporation
   [EMAIL PROTECTED]
   (773) 284-9500
   http://pinrod.com

Darwin, Keith wrote:

Tape - cardboard - plastic - paper - A

My ESD training (what little I've had) is causing all sorts of alarm
bells to go off!  I fear that many of us have taken techniques that
worked fine in the pre-ESD days and are applying them in cases where
they are dangerous.

Yea, I know that caps (most at least) and resistors are not ESD
sensitive, but that partially assembled K2 board, already populated with
some ICs is.

When I did my K2, I had it on a grounded ESD mat and I wore a wrist
strap the whole time.  I stored all my parts in metal mixing bowls or
just laid them on the mat.  I'm sure this was overkill but it was easier
to use good ESD practice than to try to discipline myself to apply it
only when it was needed.

- Keith N1AS -
- K2 5411.ssb.100 -

-Original Message-
While building my KX-1: When I conducted my inventory, I taped the
resistors, inductors and capacitors right to the pages of the book. 
___

Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft


Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

  

___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft


Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

RE: [Elecraft] Conception of a K2

[Darwin, Keith]

 

-Original Message-
... no, I didn't tape down the "sensitive" components.
--

>From an ESD point of view, that's cool, but when you pull the tape away
from the paper, you're generating a static charge which may make it to
your 1/2 populated board and cause problems with components on the
board, right?  Maybe it is a low probability issue or maybe having the
board on a mat eliminates the risk.  I don't know.


---
Capacitors ... I have never heard of any of these types of components
being damaged by
ESD: Has anyone?
--

I work with one EE who says there is an issue with caps where the
breakdown voltage (is there such a thing?) of a very small value cap may
be less than the voltage generated by ESD.  Still, caps of all values at
this company are considered not ESD sensitive.

In my case, I'm really not smart enough to know what is and is not a
real problem so it is just easier to treat everything as if it is
sensitive even if I know (or think) it isn't.

73!

- Keith N1AS -
- K2 5411.ssb.100 -
___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Re: [Elecraft] Conception of a K2

[AJSOENKE]

It rarely happens because a lot comes into play,  humidity, proximity of 
certain clothing, walking on carpet,etc. If Humidity is  up around 60% or 
higher, 
not wearing wool or synthetics, and not a lot of foot  traffic on the wool 
carpet next to your workspace, you have probably nailed down  99% of hazard. a 
small ionizing air blower of the  correct polarization is  often used to 
further 
enhance the environment. Have I ever killed a chip? Yes,  several expensive 
computer chips die in my classroom every year. Despite the  precautions and ESD 
safe work areas, concrete floors, etc, a student will  absentmindedly pick up 
a RAM or CPU and put it in a pocket or slide it across a  cardboard sheet 
used to protect a non-ESD-proof work bench and kill it  instantly. It's the 
'unconscious' actions that'll do it.  And these  computer parts all contain 
ample 
ESD protection diodes,etc, but still fall  victim. Don't gamble with the parts.

In Aerospace we are taught about  LATENT DEFECTS. This is an ESD weakening of 
the component that isn't detectable  during normal testing. It's only after 
launch when the boogers are 25,000 Km out  in space or on the surface of Mars 
that they start too fail. In ham terms that's  the equivalent of the 8th hour 
in a contest or when you hear the rare DX return  your  call. So don't take it 
for granted that you got away with the  handling of the parts just because the 
rig turned on and you hear a W6.  It  may be catastrophic and it may just 
reduce the performance of the rig to less  than advertised specs - so always do 
the best you can to protect.


73  es good luck  AL, WA6VNN  




** Get a sneak peek of the all-new AOL at 
http://discover.aol.com/memed/aolcom30tour
___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

[Elecraft] K2 backlight orientation

[Denis Jackson]

Hi chaps,

Just building the front panel board on my k2 ser. 6160.  

All was going swimmingly until I came to fit the backlight.  The pins of the 
diodes on the backlight are labled A and K and the board has + and - indicated 
for each.  I would assume that "k" on the backlight should go into the "+" hole 
on the board.  Before I do what seems logical, I'm hoping somone can confirm.

Thanks

Denis

MW0CBC/GW8OQV ex VP8AQG etc. etc.
___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Re: [Elecraft] dynamic range questions

[Kevin Purcell]

Inline

On Jun 1, 2007, at 10:56 AM, [EMAIL PROTECTED] wrote:


I assume that receiver circuit characteristics before the roofing
filters (or IF bandpass filter) essentially determine the dynamic
range. However, dynamic range figures "always" seem to degrade for
small separations of fc and fc+x. Is this because fc and/or fc+x are
falling within the IF passband and are producing spurious signals in
the stages following the roofing filters?


You have to consider which stages set the dynamic range of the  
receiver. In a well designed receiver it should be the first mixer  
that sets the dynamic range (not the RF amp, if one is used, the  
filter itself, the post-mixer amp or any of the IF or AF stages.


Yes (it's fc) that does the "damage" if it gets by a wide roofing  
filter to the post-filter amp.


An in-band measurement will give you some info on the first mixer and  
the crystal filter (the later starts to become an issue for mixers  
with a very high intercept). See Sherwoods measurements going down to  
2kHz seperation (though for CW signals this should still be outside  
the first filter).


It's a good idea to do the measurement at multiple seperation and to  
ALWAYS quote the separation with the dynamic range.



For the case of strong signals in the IF passband, are the dynamic
range tests run with the AGC disabled? In actual operation, wouldn't
the AGC reduce signal levels below the point where distortion products
were being generated (in the stages following the roofing filters)?


You normally have no AGC elements before the first mixer. It's  
usually all after the crystal filter as the filter a delay in system  
that will cause problems in getting the AGC loop well controlled.


Usually the AGC if off to make the measurement though.


The two tone test is only a proxy for the "real world". In actual
operation, if any signal (or signals) in the RF passband or mixer
passband exceeds the receiver dynamic range, will ALL of the signals
in the passband begin contributing third order products?


Yes, but only the strongest signals really make an impact. The  
spurious signals are third order products so they vary as the cube of  
the input power. Or their slope when you plot a graph in dB is three  
times steeper than the input power. The spurious signals increase  
twice as fast (on a logarithmic plot) as the input power increases.  
The intercept point is the power when the spurious signal is the same  
power as a single test tone. You can't actually get to that point --  
gain compression takes over 10 or 15dB before you hit that point.


This is a more serious issue for CW with discrete, narrow (50Hz),  
tones. The spurious signals often sound like "bad" morse code when  
two CW signals intermod together -- they're the product (the AND in a  
logical sense) of one or more CW transmissions. In other cases they  
can sound like a good CW signal (say a strong CW signal  
intermodulatinging with a SW broadcast carrier) on the wrong frequency.


For SSB there is less of an issue (in general). The power is spread  
over a 3kHz so the components are typically -18dB down on the same  
power CW signal (3kHz/50Hz) so you are less likely to hear the  
problem in the same RF environment. When it does manifest it's more  
like the noise floor increasing in stregth than discrete signals  
though in the case of an SSB signal intermodulating with a strong  
carrier you would hear a distorted SSB-like signal.


You can do the calculation to determine what a passband looks  
(sounds) like when using "non-equal power" tones for the DR test (or  
as you know them, the ham bands). Wes Hayward does it in his  
"Introduction to RF Design" book.



Is the magnitude of the third order distortion products a function of
the "degree" of the nonlinearity?


Yes. This non-linearity is what controls the intercept points -- the  
measure usually quoted for amplifiers, mixers and other devices (the  
3rd order intercept point is the default but of course there is a  
second order intercept point that is important too :-)



Can different receiver models with
the same dynamic range numbers (operating under the same conditions)
differ considerably in the "signal strength" of junk signals?


By "junk signals" you mean spurious signals from (2nd or) 3rd order  
IMD so the answer is no.  Assuming they measure the same at the


But of course there are other differences (phase noise which might  
mask these effects) and other sources of spurious signals.


I'd recommend reading Peter E. Chadwick, G3RZP, QEX article "HF  
Receiver dynamic Range: How Much Do We Need?" (QEX May/June 2002,  
p36-41).


A good receiver needs a dynamic range of about 100dB according to a  
study by Peter E. Chadwick, G3RZP HF Receiver dynamic Range: How  
Much Do We Need? which appeared in the May/June 2002 issue of QEX.


The number 100dB for phase noise limited dynamic range given by  
G3RZP refers to "SSB bandwidth" which means that the noise floor 

Re: [Elecraft] Conception of a K2

[Kurt Pawlikowski]

Keith,

   Well, I never pulled the tape from the paper: I just pulled the wire 
out from the tape... And, I, being grounded, was in contact with the 
leads. Don't know if that makes a difference or not!


   Breakdown voltage: I can assure you that almost ANY ESD is larger 
than the breakdown voltage. It's just that ESD is usually a very small 
amount of power that the capacitor will easily absorb. For it to damage 
the cap, it has to charge it to the breakdown voltage. In the case of 
polarized caps, I'm not sure what these short term reverse voltages do.


   Regards,

   kurtt

   Kurt Pawlikowski, AKA WB9FMC
   The Pinrod Corporation
   [EMAIL PROTECTED]
   (773) 284-9500
   http://pinrod.com

Darwin, Keith wrote:
 


-Original Message-
... no, I didn't tape down the "sensitive" components.
--

>From an ESD point of view, that's cool, but when you pull the tape away
from the paper, you're generating a static charge which may make it to
your 1/2 populated board and cause problems with components on the
board, right?  Maybe it is a low probability issue or maybe having the
board on a mat eliminates the risk.  I don't know.


---
Capacitors ... I have never heard of any of these types of components
being damaged by
ESD: Has anyone?
--

I work with one EE who says there is an issue with caps where the
breakdown voltage (is there such a thing?) of a very small value cap may
be less than the voltage generated by ESD.  Still, caps of all values at
this company are considered not ESD sensitive.

In my case, I'm really not smart enough to know what is and is not a
real problem so it is just easier to treat everything as if it is
sensitive even if I know (or think) it isn't.

73!


  

___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft


Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

[Elecraft] ESD

[John Huggins]

Kurt Pawlikowski wrote:


Keith,

 As far as I know, resistors, capacitors and most (if not all) diodes 
will not be damaged by ESD. Note: Diodes will either conduct when 
forward biased or "zener" and conduct when backwards biased - thought 
I'm not sure about "special" diodes [barrier, shotkey (sp?), and the 
like]. And, normal ESD damage is caused by high potentials arching 
within the component. I believe diodes have plenty of capacity to 
absorb the power, either forward or reversed biased. Capacitors will 
simply "charge" (which is why attaching a capacitor to a Van de Graph 
generator is a Bozo no-no). At any rate, I have never heard of any of 
these types of components being damaged by ESD: Has anyone?


While it is true caps can be relatively sturdy, capacitors are damaged 
by ESD if the high voltage appears across their leads despite what one 
might think of "charge time."  Any usual thinking of how caps work 
begins to break down once the peak voltage (not rated voltage, but 
whatever the much higher real peak voltage is - ie 400-1000V for a 100V 
ceramic)  is exceeded even with the low low power of an ESD event.  
Audiophile Tube Stereo freaks recognize caps that have been zapped 
because they develop pinholes in their dielectric and begin to add pop 
and hiss to their "sound."


Thin film resistors are also easily "hurt" by ESD.  Same with diodes.

NASA is particularly anal about this (for obvious reasons) and have this 
to share...


 http://workmanship.nasa.gov/wppr_comp_c2mos.jsp

While it is true not all ESD events cause damage. The outcome of a 
discharge to a sensitive device or assembly will depend on many factors, 
including:

- device sensitivity
- severity of ESD stress
- actual strike site

Some components handle ESD better than others, but none are entirely immune.

If we are to assume Elecraft handles their parts with the care the parts 
probably received on their way to Elecraft (I hope this is so) and then 
delivered them to us with the same care, we should not break the chain 
of proper handling.


ESD is so easy to do correctly why not treat all the parts with the same 
level of respect.  The chances of success are probably measurably better.


John
___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft


Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

[Elecraft] Thursday 20M Fox Hunt

[Joe-aa4nn]

Hello All de Joe, AA4NN, in SC near Charlotte, NC.

I will be one of the foxes Aug 16th along with Dale, WC7S,
calling CQ FOX between 14050 and 14070 from 0100 to
0230 UTC.  My listening offset will be 1khz, UP or DN,
from my transmit frequency as I will indicate (UP or DN.)
During the last 30 minutes I will be working zero-beat.


My rig will be Elecraft K2 at 5 watts.  One antenna will
be the 4-element SteppIR at 102 feet which I will have
in bi-directional mode firing NE and SW.  Later in the
hunt I will point it Westward.  My second antenna is a
folded dipole at 30 feet which I will randomly alternate
with the SteppIR.

Let's hope for some very good conditions.

73/72,
de Joe, aa4nn


__,_._,___ 
___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

[Elecraft] K2 4 MHz Oscillator Calibration

[JT Croteau]

Anyone know if the frequency counter mode of the MFJ-259B is accurate
enough to do the 4 MHz Oscillator Calibration of the K2?

Thanks

-- 
JT Croteau, N1ESE - Manchester, NH
___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

[Elecraft] K2 6194

[Jim Stoneback]

K2 6294 is up and running CW & SSB, 160-10.  Now I gotta get busy and build 
the KPA100 then the KAT100.


73,  Jim

Jim Stoneback
K4AXF
In the beautiful Shenandoah Valley
Elecraft K2
Drake SW8

___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft


Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Re: [Elecraft] K2 backlight orientation

[Don Wilhelm]

Denis,

Not to worrk about how it is marked - it is reversible, so if it mounts 
on the board at all, it will be correct. - you cannot get it wrong.


73,
Don W3FPR

Denis Jackson wrote:

Hi chaps,

Just building the front panel board on my k2 ser. 6160.  


All was going swimmingly until I came to fit the backlight.  The pins of the diodes on the 
backlight are labled A and K and the board has + and - indicated for each.  I would assume that 
"k" on the backlight should go into the "+" hole on the board.  Before I do 
what seems logical, I'm hoping somone can confirm.

  

___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft


Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Re: [Elecraft] K2 4 MHz Oscillator Calibration

[Don Wilhelm]

JT,

No way!  Wait until you have completed the K2 and use the method 
described on the Elecraft website to accurately set the 4 MHz reference 
using 10 MHz WWV or other accurately known frequency standard station - 
follow that with a CAL PLL and CAL FIL to produce accurate dial 
calibration on the K2.  In the meantime, it is not critical, so just set 
the trimmer cap to its mid-rotation position.


If you want more information about doing the Dial Calibration steps, 
check my website  http://w3fpr.qrpradio.com.


73,
Don W3FPR

JT Croteau wrote:

Anyone know if the frequency counter mode of the MFJ-259B is accurate
enough to do the 4 MHz Oscillator Calibration of the K2?

Thanks

  

___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft


Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Re: [Elecraft] K2 4 MHz Oscillator Calibration

[Vic K2VCO]

JT Croteau wrote:

Anyone know if the frequency counter mode of the MFJ-259B is accurate
enough to do the 4 MHz Oscillator Calibration of the K2?


No.

Use the N6KR method, described on the Elecraft Website.

--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft


Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Re: [Elecraft] K2 backlight orientation

[Don Wilhelm]

That should have been 'worry' instead of 'worrk' - sorry folks.  73, Don 
W3FPR


Don Wilhelm wrote:

Denis,

Not to worrk about how it is marked - it is reversible, so if it 
mounts on the board at all, it will be correct. - you cannot get it 
wrong.


73,
Don W3FPR



___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft


Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Re: [Elecraft] QSP? relaying ECN check-ins.

[David Wilburn]

Sounds good Tom, thank, and thanks to others who have replied with ideas 
off-line.  I remember seeing something about the net, so that is 
probably the link you are talking about.  I will catch his next 
announcement.  I try to catch the early net, but get busy, and then too 
late for the later one.  Getting tired and head isn't on straight.


David Wilburn
[EMAIL PROTECTED]
K4DGW
K2 #5982


Tom Hammond wrote:

Hi David:

I have been working at improving my CW skills for what seems a very 
long time.  I have not checked into a CW net, and I would like to 
check into ECN, but it is admittedly difficult here from the right 
coast.  I have listened one time and was a bit overwhelmed with trying 
to copy, understand, and figure out what I needed to do.


I have looked at traffic net protocols, and I understand that practice 
will improve understanding.  Is it possible to have a script somewhere 
of what will happen, so us newbies / slowpokes can follow along, and 
try to figure out when to send out our call?


I thought Kevin offered something along this line on the web site he 
references at the end of each weekly ECN announcement...


Shoot...!  Thought I had a copy of his last announcement, but must have 
dumped it.


My plan would be to listen to the 20m net, and then try to stay awake 
and attempt to check in on the 40m net.  Rig is K2/100 w/80m loop.  So 
main handicap is the operator.


In general, we have a main NCS (Net Control Station), who is Kevin 
KD5ONS. After he picks up as many stations as he can easily find, he'll 
usually try to turn things over to me (N0SS, in the midwest) for a 
second shot.


The general call is "CQ ECN DE {call} QNI? K", "CQ ECN EAST DE {call} 
QNI? K" or something very similar to that.


As soon as the "K" is sent, we are listening for stations wishing to QNI 
(check in) to send a 'hail sign', usually one or two characters from 
their callsign (such as "DG", if you were attempting to QNI).


When the NCS hears the hail from another station he will respond to that 
station by sending back the hail which he heard (or which he THINKS he 
heard). That's all... usually no other response from NCS.


If you hear the NCS respond with your hail, that's your cue to send "DE 
K4DGW David in FL Kx (fill in the Elecraft model #) NR (fill in your 
serial #) K".


Assuming NCS gets all of your info, he will acknowledge you and welcome 
you to the net, possibly asking for more comments or info. Otherwise, 
you will often be asked to stand by with the "AS" prosign, or you may be 
allowed to check out as well.


If the NCS does NOT copy your info, he may ask YOU for a repeat, or may 
ask someone else to relay (QSP or QNB) is possible.


If you are trying to QNI at the first of the net, when there may be many 
other stations trying to QNI as well, you may be well down in the 'pile' 
of callers, so it may take a while for the NCS to dig down to you.  BE 
PATIENT, and PERSISTENT!  Wait for the next call for check-ins and try 
again!  Repeat as required unless it's obvious that the NCS is not 
hearing you. We TRY to pick up all callers, but sometimes we just cannot 
pull everyone out of the noise (summertime QRN out here in the midwest 
often runs S7-S9, even on a 'quiet' night. If I don't get any responses 
to calls for QNI, I will usually ask for any relays of stations I can't 
hear.


When I am NCSing, I try to set my character speed at 20 WPM with added 
spacing between characters, for an equivalent speed of about 15-16 WPM. 
If that speed is too fast for you, feel free to send at whatever speed 
is comfy for you and we will try to match YOUR sending speed. If we 
don't BE SURE to ask for a QRS... no dishonor in asking that!!!


Hope this helps a bit.

73,

Tom Hammond   N0SS



___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft


Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Re: [Elecraft] QSP? relaying ECN check-ins.

[Stephen W. Kercel]

David:

If you're interested in improving your CW network skills, your best 
bet would be to participate in an NTS slow net. Although the ECN is 
fairly easy to hit from the east coast on 20 M, until you get your CW 
speed up, you may find it a bit overwhelming.


Your QRZ.com listing says that you are in southern Virginia. I looked 
on the Virginia ARRL Section Web site, and unfortunately Virginia 
only has a fast CW NTS net.


However, the Virginia site does include a link, 
http://home.carolina.rr.com/w4eat/csn.html to the Carolinas Slow Net. 
Since it is listed on the Virginia site, I expect that they welcome 
Virginia checkins. The net runs on 80 M at 8-10 wpm, and is 
specifically geared to educate beginners on CW net operating procedures.


I used to operate from Chester Virginia, and I can tell you that the 
Carolina nets are easy to hit on 80 m from southern Virginia, and the 
Carolina operators are very friendly.


You might want to give that a go. If you do not feel quite ready, you 
might want to e-mail w4eat and seek his advice on participating.


73,

Steve Kercel
AA4AK




At 12:02 PM 8/15/2007, David Wilburn wrote:
I have been working at improving my CW skills for what seems a very 
long time.  I have not checked into a CW net, and I would like to 
check into ECN, but it is admittedly difficult here from the right 
coast.  I have listened one time and was a bit overwhelmed with 
trying to copy, understand, and figure out what I needed to do.


I have looked at traffic net protocols, and I understand that 
practice will improve understanding.  Is it possible to have a 
script somewhere of what will happen, so us newbies / slowpokes can 
follow along, and try to figure out when to send out our call?


My plan would be to listen to the 20m net, and then try to stay 
awake and attempt to check in on the 40m net.  Rig is K2/100 w/80m 
loop.  So main handicap is the operator.


David Wilburn
[EMAIL PROTECTED]
K4DGW
K2 #5982



___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft


Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

[Elecraft] Remote PC Control...

[STEPHEN W BANKS]

Hello Everyone,

A few weeks ago I inquired whether anyone knew of a good -- preferably free or 
low-cost -- software that ran well, and which seemed  to do a good job using 
the internet for remotely controlling my desktop PC and my K2/100 from my 
remote laptop.

The idea mirrors an article from the April, 2007 issue of QST Magazine.  There 
were a couple of comments offered, but being of the "Dumb Thumbs" school of 
thought which I am, I wasn't able follow up very successfully.  (A persistent 
"air-gap" in the system -- possibly my firewall -- follows me around everywhere 
I go.)

My idea ultimately is to be able to remotely control my K2/100 via its KI02 
accessory port.  The K2 is physically connected my desktop PC, and I 
occasionally run it using Ham Radio Deluxe.  My DSL service would be the means 
of connecting things together.

It seems that using Ham Radio Deluxe S/W has the potential to do this, but so 
far I've been unsuccessful in doing so.

If anyone cares to comment I'd appreciate your thoughts, particularly if you've 
succeeded in getting HRD to do the job I have in mind..

Tnx es 73,

Steve Banks
K0PQ 

___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

[Elecraft] FS

[jpgabbard]

I have decided to leave my K2 as QRP, and I would like to list the following 
kits in sealed boxes as for sale. I have the following:
   1.KPA100   $370.00 shipped lower 48.
2.KAT100   $230.00  shipped
3. KPAUPGRADEKIT   $15.00 shipped
  Thanks, John   KF7OM
___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

[Elecraft] FS: KAF2 Audio Filter and Real time clock

[NZ8J]

Still have the KAF2 for sale..

I had the DSP units in my K2's that I sold and have this left over. It
is assembled and works fine. I will ship and insure it US Priority mail
for $65 Thanks 
Tim
NZ8J  [EMAIL PROTECTED] 
___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com


___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

[Elecraft] Ethernet Birdies on 14.03 MHz

[Mike Scott]

K9YC has a primer on eliminating interference in this presentation:
http://www.audiosystemsgroup.com/Ferrites-Ham.pdf

Near the end he shows the following approximate ethernet birdy frequencies:
3.511 MHz
10.106 MHZ
10.122 MHz
14.030 MHz
21.052 MHz
28.014 MHz
28.105 MHz
28.181 MHz
28.288 MHz
28.319 MHz
28.350 MHz
28.380 MHz

He goes into mitigation approaches.

This article also discusses the ethernet birdy phenomenon with some other
frequencies noted. http://www.nadxc.org/longpathapr04.pdf


Mike Scott

AE6WA
Tarzana, CA

Elecraft KX1
40M Inverted V
20M Dipole



No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.5.476 / Virus Database: 269.11.19/955 - Release Date: 8/15/2007
4:55 PM

___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Re: [Elecraft] Remote PC Control...

[Thom LaCosta]

On Wed, 15 Aug 2007, STEPHEN W BANKS wrote:


Hello Everyone,

A few weeks ago I inquired whether anyone knew of a good -- preferably free or 
low-cost -- software that ran well, and which seemed  to do a good job using 
the internet for remotely controlling my desktop PC and my K2/100 from my 
remote laptop.


I missed the original post...but I found a free application called Simple 
Desktop.  It runs under windows and works fine.  I installed it on my desktop, 
opened up two ports in the router...and when I logeed into it from my Moms 
machine, she commented that it looked just like her desktop...only more 
cluttered because of all the icons I have.


< http://www.moogsoftware.com/pc%20remote%20control.html >

If you do use it with another program to control your rig, let me know...I'd 
like to try it.


73, thom k3hrn

www.baltimorehon.com/Home of the Baltimore Lexicon
www.tlchost.net/hosting/ Web Hosting as low as 3.49/month
___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft


Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Re: [Elecraft] Remote PC Control...

[Fred Jensen]

STEPHEN W BANKS wrote:


A few weeks ago I inquired whether anyone knew of a good --
preferably free or low-cost -- software that ran well, and which
seemed  to do a good job using the internet for remotely controlling
my desktop PC and my K2/100 from my remote laptop.


While still employed as a Division Chief Engineer, I sometimes told 
potential software customers:


"Cheap, Good, Get it fast."  Pick any two.

73,

Fred K6DGW
- Northern California Contest Club
- CU in the 2007 CQP Oct 6-7
- www.cqp.org
___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft


Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Re: [Elecraft] Remote PC Control...

[Don Wilhelm]

Steve,

You may want to try UltraVNC along with Skype - google for the sources.
The only problem that you might encounter is latency.  I understand that 
native HRD cures the latency problem, but since you are having trouble 
getting HRD to work 


UltraVNC works fine for me when controlling several computers on my 
network from one of them., although I am not using it currently for 
real-time applications.   It gives you a screen that is the desktop of 
the remote computer on your local computer, and you control things with 
the mouse and keyboard just as though the remote computer were local.


73,
Don W3FPR

STEPHEN W BANKS wrote:

Hello Everyone,

A few weeks ago I inquired whether anyone knew of a good -- preferably free or 
low-cost -- software that ran well, and which seemed  to do a good job using 
the internet for remotely controlling my desktop PC and my K2/100 from my 
remote laptop.

The idea mirrors an article from the April, 2007 issue of QST Magazine.  There were a couple of 
comments offered, but being of the "Dumb Thumbs" school of thought which I am, I wasn't 
able follow up very successfully.  (A persistent "air-gap" in the system -- possibly my 
firewall -- follows me around everywhere I go.)

My idea ultimately is to be able to remotely control my K2/100 via its KI02 
accessory port.  The K2 is physically connected my desktop PC, and I 
occasionally run it using Ham Radio Deluxe.  My DSL service would be the means 
of connecting things together.

It seems that using Ham Radio Deluxe S/W has the potential to do this, but so 
far I've been unsuccessful in doing so.

If anyone cares to comment I'd appreciate your thoughts, particularly if you've 
succeeded in getting HRD to do the job I have in mind..

Tnx es 73,

Steve Banks
K0PQ 


___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft


Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com


  

___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft


Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Re: [Elecraft] Remote PC Control...

[Larry Phipps]

I missed the original post, but if you want to do free remote desktop 
sharing, VNC is free and has been around a long time. If you are using 
XP t both ends, you don't need any additional apps... the capability is 
built in. There are a number of ways to do remote radio control, and HRD 
has an excellent one built-in. I use a system that does not require a 
computer at the remote site. I wrote an article in October 2005 QST 
about it, which is reprised on my website, but it requires some non-free 
parts and is not particularly simple to set up.


For total simplicity, try VNC or XP Desktop Sharing. For flexibility, 
try HRD. I'm sure someone on the HRD forums could help you with the 
setup. At least one of the moderators is an Elecrafter and frequents 
this list, as well as the developer of HRD, Simon HB9DRV.


73,
Larry N8LP
www.telepostinc.com



STEPHEN W BANKS wrote:

Hello Everyone,

A few weeks ago I inquired whether anyone knew of a good -- preferably free or 
low-cost -- software that ran well, and which seemed  to do a good job using 
the internet for remotely controlling my desktop PC and my K2/100 from my 
remote laptop.

The idea mirrors an article from the April, 2007 issue of QST Magazine.  There were a couple of 
comments offered, but being of the "Dumb Thumbs" school of thought which I am, I wasn't 
able follow up very successfully.  (A persistent "air-gap" in the system -- possibly my 
firewall -- follows me around everywhere I go.)

My idea ultimately is to be able to remotely control my K2/100 via its KI02 
accessory port.  The K2 is physically connected my desktop PC, and I 
occasionally run it using Ham Radio Deluxe.  My DSL service would be the means 
of connecting things together.

It seems that using Ham Radio Deluxe S/W has the potential to do this, but so 
far I've been unsuccessful in doing so.

If anyone cares to comment I'd appreciate your thoughts, particularly if you've 
succeeded in getting HRD to do the job I have in mind..

Tnx es 73,

Steve Banks
K0PQ 


___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft


Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

  

___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft


Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

RE: [Elecraft] Remote PC Control...

[Dan Barker]

You only need XP on the shack machine. There's free RDP software (client)
for any 32bit Windoze on the Microsoft site. You can use W2K in the shack,
but it has to be Server, not Pro.

RDP is Waay faster than VNC, NetOp, PcAnywhere, etc., etc. But, if
you don't have the right operating system setup, it's not an option.

Dan / WG4S


 If you are using XP t both ends, you don't need any additional apps... the
capability is built in. 


___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Re: [Elecraft] Remote PC Control...

[hank k8dd]

STEPHEN W BANKS wrote:

Hello Everyone,

A few weeks ago I inquired whether anyone knew of a good -- preferably free or 
low-cost -- software that ran well, and which seemed  to do a good job using 
the internet for remotely controlling my desktop PC and my K2/100 from my 
remote laptop.


If you are going to be running this on your home network, and you are 
not running XP - Win 2K or below - there is K2Anywhere.  It's a 2003 
program, but a couple of years ago I had it running with streaming 
audio.  For what I wanted to do with it the network latency was a 
killer, but for general ragchewing it should work fine - again, as long 
as you are Win2K or below!

http://www.qsl.net/ke6d/k2anywhere.htm is the website.And it's free.

72  73HankK8DD

--
---
If God intended you to be on single sideband,
he would have given you only one nostril.
- Steve, K2PTS (SK)
---

___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft


Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Re: [Elecraft] Remote PC Control...

[Larry Phipps]

Thanks for that info, Dan.

Larry N8LP



Dan Barker wrote:

You only need XP on the shack machine. There's free RDP software (client)
for any 32bit Windoze on the Microsoft site. You can use W2K in the shack,
but it has to be Server, not Pro.

RDP is Waay faster than VNC, NetOp, PcAnywhere, etc., etc. But, if
you don't have the right operating system setup, it's not an option.

Dan / WG4S


 If you are using XP t both ends, you don't need any additional apps... the
capability is built in. 



___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft


Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

  

___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft


Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Re: [Elecraft] ESD

[Kurt Pawlikowski]

John,

   Interesting. The link is related to CMOS, which is extremely 
sensitive to ESD.


   Capacitors: I don't understand how a cap can be damaged unless ESD 
has a transient faster than the cap can charge or there is enough 
current to charge the cap beyond it's limits. But isn't that what the 
cap is supposed to do? Yes, once the voltage across the cap is exceeded, 
all bets are off!


   If you're talking about caps in tube equipment, I think the problem 
there would more likely be explained by degrading/defective components, 
or components that were exposed to high voltage, relatively high power 
discharges (i.e., not ESD).


   I can understand thin film resistors (the higher the resistance, the 
more likely an arc). Not sure about diodes. I'm thinking that if the ESD 
has a transient faster than the diode can handle, maybe. It just seems 
to me that if forward biased, it simply conducts. If backward biased, it 
acts like a zener (which conducts).


   Some interesting links...

   http://www.aiinet.com/documents/html/AI180hwman/m0699/aihxa.htm
   http://www.electrostatics.net/library/articles/ESD_damage.htm
   http://www.evaluationengineering.com/archive/articles/1102esd.htm
   http://focus.ti.com/lit/an/ssya010/ssya010.pdf
   http://www.ce-mag.com/archive/03/03/henry.html
   http://www.e-gizmo.com/ARTICLES/ESD/ESD2.HTM
   
http://electrostaticsolutions.blogspot.com/2005/06/are-capacitors-esd-suceptible.html


   Some of these have pictures (always interesting!). The last link 
talks about capacitors. One of the links is very IEEE technical. More 
fuel for the fire! {'-)


   Regards,

   kurtt

   Kurt Pawlikowski, AKA WB9FMC
   The Pinrod Corporation
   [EMAIL PROTECTED]
   (773) 284-9500
   http://pinrod.com
  
John Huggins wrote:



John Huggins wrote:
While it is true caps can be relatively sturdy, capacitors are 
damaged by ESD if the high voltage appears across their leads despite 
what one might think of "charge time."  Any usual thinking of how 
caps work begins to break down once the peak voltage (not rated 
voltage, but whatever the much higher real peak voltage is - ie 
400-1000V for a 100V ceramic)  is exceeded even with the low low 
power of an ESD event.  Audiophile Tube Stereo freaks recognize caps 
that have been zapped because they develop pinholes in their 
dielectric and begin to add pop and hiss to their "sound."


Thin film resistors are also easily "hurt" by ESD.  Same with diodes.

NASA is particularly anal about this (for obvious reasons) and have 
this to share...


 http://workmanship.nasa.gov/wppr_comp_c2mos.jsp

While it is true not all ESD events cause damage. The outcome of a 
discharge to a sensitive device or assembly will depend on many 
factors, including:

- device sensitivity
- severity of ESD stress
- actual strike site

Some components handle ESD better than others, but none are entirely 
immune.


If we are to assume Elecraft handles their parts with the care the 
parts probably received on their way to Elecraft (I hope this is so) 
and then delivered them to us with the same care, we should not break 
the chain of proper handling.


ESD is so easy to do correctly why not treat all the parts with the 
same level of respect.  The chances of success are probably 
measurably better.


John
___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft   
Help: http://mailman.qth.net/subscribers.htm

Elecraft web page: http://www.elecraft.com




___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft


Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Re: [Elecraft] ESD

[Jim Miller]

I save all of the black foam that ICs often come pressed into.

I sort all my leaded components by sticking them into it.

73

jim ab3cv
___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

[Elecraft] PLL Clicks

[Kevin Shaw]

My K2 has the "PLL Click" problem when I turn the VFO. I've tried running
CAL PLL with the covers on, but no luck.

 

The strange part is that I only hear the clicks when I DECREASE the
frequency with the VFO. As I tune up in frequency, I hear absolutely no
clicks. When I tune down in frequency I get very loud clicks every 5 KHz or
so. I can hear them with no antenna attached.

 

Any idea where I should look first?

 

Thanks,

 

Kevin

N8IQ

 

 

 

___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Re: [Elecraft] QSP? relaying ECN check-ins.

[Kevin Rock]

Good Evening,
   I found working with a slow speed NTS net very helpful while I was improving 
my CW copy.  After about a year with WCN I moved on to our regular NTS net.  I 
worked with them passing traffic for a few years until my work schedule 
precluded my activity.  ECN runs as a directed net and while acting as NCS I 
have accepted traffic.  Later, either after or between the nets, I passed it 
on.  
   Earlier today Tom gave a good summary of how he and I run the nets.  After 
you send your 'hail' sign, and we echo it, all you need to do is send the 
information he listed at YOUR comfortable copying speed.  He and I will slow 
down to your rate to acknowledge your information and welcome you.  I have been 
told there are many folks listening while ECN is running.  Some try to be heard 
and are not acknowledged while others simply listen along for practice.  I 
don't mind folks listening but I would like to meet them if at all possible.  I 
would also like to encourage folks to relay stations or to run the net for a 
while.  It is not difficult and is good practice.  
   ECN is not a traffic net, per se, but will handle traffic if necessary.  It 
is meant to be a casual net where folks can meet and listen to others around 
the continent (or world if propagation improves).  If you send QRS we will slow 
down; I try to be as polite as my mother taught me.  Being kind and courteous 
has paid me great dividends over the years.  I'll not stop any time soon!  
There is nothing strict about ECN, we try to enjoy ourselves, have fun, and 
welcome others to the group.  Please feel free to listen or participate; your 
choice.
   73,
  Kevin.  KD5ONS


-Original Message-
>From: "Stephen W. Kercel" <[EMAIL PROTECTED]>
>Sent: Aug 15, 2007 3:38 PM
>To: David Wilburn <[EMAIL PROTECTED]>, Elecraft@mailman.qth.net
>Subject: Re: [Elecraft] QSP?  relaying ECN check-ins.
>
>David:
>
>If you're interested in improving your CW network skills, your best 
>bet would be to participate in an NTS slow net. Although the ECN is 
>fairly easy to hit from the east coast on 20 M, until you get your CW 
>speed up, you may find it a bit overwhelming.
>
>Your QRZ.com listing says that you are in southern Virginia. I looked 
>on the Virginia ARRL Section Web site, and unfortunately Virginia 
>only has a fast CW NTS net.
>
>However, the Virginia site does include a link, 
>http://home.carolina.rr.com/w4eat/csn.html to the Carolinas Slow Net. 
>Since it is listed on the Virginia site, I expect that they welcome 
>Virginia checkins. The net runs on 80 M at 8-10 wpm, and is 
>specifically geared to educate beginners on CW net operating procedures.
>
>I used to operate from Chester Virginia, and I can tell you that the 
>Carolina nets are easy to hit on 80 m from southern Virginia, and the 
>Carolina operators are very friendly.
>
>You might want to give that a go. If you do not feel quite ready, you 
>might want to e-mail w4eat and seek his advice on participating.
>
>73,
>
>Steve Kercel
>AA4AK
>
>
>At 12:02 PM 8/15/2007, David Wilburn wrote:
>>I have been working at improving my CW skills for what seems a very 
>>long time.  I have not checked into a CW net, and I would like to 
>>check into ECN, but it is admittedly difficult here from the right 
>>coast.  I have listened one time and was a bit overwhelmed with 
>>trying to copy, understand, and figure out what I needed to do.
>>
>>I have looked at traffic net protocols, and I understand that 
>>practice will improve understanding.  Is it possible to have a 
>>script somewhere of what will happen, so us newbies / slowpokes can 
>>follow along, and try to figure out when to send out our call?
>>
>>My plan would be to listen to the 20m net, and then try to stay 
>>awake and attempt to check in on the 40m net.  Rig is K2/100 w/80m 
>>loop.  So main handicap is the operator.
>>
>>David Wilburn
>>[EMAIL PROTECTED]
>>K4DGW
>>K2 #5982
___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com