Re: [Elecraft] K2 weird problem

[Luc Favre]

Long time ago (K2 SN 1028), building my ssb-brd, I had a similar trouble.
After finishing the board, I had a diode left the manual did'nt mention.
Finaly I found out, the board was revision B, but the manual revision A, or
vice-versa. . I solder the left diode according to the PCB . And every think
was OK.
You maybe have a trap this kind.
73
Luc/F6HJO/HB9ABB

- Original Message - 
From: "Gregg mulder" <[EMAIL PROTECTED]>
To: 
Sent: Friday, December 01, 2006 12:40 AM
Subject: [Elecraft] K2 weird problem


> First I'd like to thank all of u guys fer pitching in to help me with this
problem. That said, hereis an update. Power out set to 5w, CW mode. K2 works
fine with no SSB brd intstalled. When SSB brd in,  on CW xmit, the bar graph
reads no power, the power out at the ant reads abt 10 w, high current alarm
comes on when xmitting.Problem is no longer intermittent, there all the
time. Have replaced (new parts) Q1, Q2 , Q3 , D1, D2 ,D3, D5, es C36 on ssb
brd. Appears to be somthing related to Q1, With Q1 remmoved, rig seems to
xmit OK, Tryed removing D2, but that does not help. Haven't had my mic today
so can't try Peter's suggestion  of measuring voltages while in ssb
mode.Should I  be looking on another brd for somthing feeding the ALC
circuitry ? i'm going to replace C19, C38, R4,es R9 on ssb brd tonight.
73  Gregg
> ___
> 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] Whoops!

[Don Wilhelm]

Paul,

I love the rigrunner system, but like anything else, it does have its
limitations and ecentricities.  An awareness of those ecentricities (learned
by experience) is a very good tool indeed.

73,
Don W3FPR
  -Original Message-

  Don You hit the nail on the head. I assumed since I had 13.8 volts at
J3, I was OK on power. The more I use the RigRunner system, the less I like
it. Tnx for your help 73 from Paul NN5G


--
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.5.430 / Virus Database: 268.15.3/562 - Release Date: 12/1/2006
1:12 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

[Elecraft] WA3WSJ: Polar Bear #2 at Pulpit Rock

[Edward R. Breneiser]

Hello all,

Look for WA3WSJ operating during the December PBMME from Pulpit Rock on
the AT here in PA 20:00utc until 00:00utc. I'll have my Pimped-out KX1
with me for the evening event. Look for me on 20m,30m & 40M around the
qrp cw frequencies.

The weather here should be cold and windy - perfect polar bear weather!

http://www.wa3wsj.com/KX1.html

http://www.wa3wsj.com/files/PolarBear2006.html


72,
Ed,WA3WSJ



___
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: KX1 + All Options

[David Toepfer]

Asking $500 for all items listed below which are built, installed, and tested. 
Prices listed are the cost of unbuilt kits.  Price includes case.

Elecraft items included:

Item   Descrition  Price
   --  -
KX1Ultra Portable CW Xcvr  $299
KXAT1  Internal ATU for the KX1$89
KXB308030/80 m Adapter for KX1 $65
KXPD1  Plug-in Keyer Paddle for KX1$69
   =
   $522

REF: http://www.elecraft.com/elecraft_prod_list.htm


Additional items included:

Pelican® Micro Case # 1050 - Clear with Yellow Liner ($20)

REF: http://www.pelican-case.com/1050-clear-yellow.html


Also included are manuals with corrections and tested measurements.

NOTE: Buyer pays shipping.

___
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] Whoops!

[Paul Kelly]

Don You hit the nail on the head. I assumed since I had 13.8 volts  at J3, 
I was OK on power. The more I use the RigRunner system, the less  I like it. 
Tnx for your help 73 from Paul NN5G
  
Don Wilhelm <[EMAIL PROTECTED]> wrote:  If you are using a Rigrunner with fuses 
for your DC power distribution,
check the fuse.  I recently was temporarily 'mind-boggled' by a similar
condition - measured full power supply voltage with no load, but as soon as
I connected a load, the voltage dropped to almost nothing.
Those LEDs across the fuse that are supposed to tell you that a fuse is
blown will conduct voltage with no current load (just like a diode) -
Unfortunately, the dim LED did not overpower my workbench lighting enough
for me to notice it (they only light when a load is applied).

73,
Don W3FPR

> -Original Message-
>
> I was in the process of adjusting L3 & L4 after  installing
> the K160RX for max power, when I got a HI CUR indication, then
> lost  all power. The LCD does not light. Yes, I was using the
> plastic tool to adjust L3  & L4. I do have power on the board. I
> unplugged the 160 board, but nothing  changed. I never had to
> troubleshoot putting it together a year ago. Any  suggestions on
> where to start looking?  Tnx de NN5G
>
--
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.5.430 / Virus Database: 268.15.3/562 - Release Date: 12/1/2006
1:12 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] Whoops!

[Ron D'Eau Claire]

Is it a K2 or K2/100. If a K2, how quickly did you try to restart it? The K2
has a resettable fuse in it that will open when stressed, then it needs a
short rest before it reconnects. 

Ron AC7AC

-Original Message-
   I was in the process of adjusting L3 & L4 after  installing the K160RX
for max power, when I got a HI CUR indication, then lost  all power. The LCD
does not light. Yes, I was using the plastic tool to adjust L3  & L4. I do
have power on the board. I unplugged the 160 board, but nothing  changed. I
never had to troubleshoot putting it together a year ago. Any  suggestions
on where to start looking?  Tnx de NN5G




___
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: antennna /swr analyser kit

[Siu Johnny]

Hi Group,

It is Off Topic.  You can press delete now if you are not interested.

This kit is also known as VK5JST analyser.  It has been brought for some 
time but I do not have the time to build it. It covers 1.3 to 31 Mhz with 
reading SWR, reactance and inductance. It is a complete kit with 
construction manual, all the components, PCB and enclosure. 

For details, please visit  and 



My price is USD85.  I shall send the kit to you by registered airmail at my 
own costs.  If you are interested and would like to build this analyser, 
please email me off the list and direct to [EMAIL PROTECTED]


Thanks for the band width here.

Johnny Siu VR2XMC

_
与世界各地的朋友进行交流，免费下载  Live Messenger; 
http://get.live.com/messenger/overview 


___
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] Whoops!

[Don Wilhelm]

If you are using a Rigrunner with fuses for your DC power distribution,
check the fuse.  I recently was temporarily 'mind-boggled' by a similar
condition - measured full power supply voltage with no load, but as soon as
I connected a load, the voltage dropped to almost nothing.
Those LEDs across the fuse that are supposed to tell you that a fuse is
blown will conduct voltage with no current load (just like a diode) -
Unfortunately, the dim LED did not overpower my workbench lighting enough
for me to notice it (they only light when a load is applied).

73,
Don W3FPR

> -Original Message-
>
> I was in the process of adjusting L3 & L4 after  installing
> the K160RX for max power, when I got a HI CUR indication, then
> lost  all power. The LCD does not light. Yes, I was using the
> plastic tool to adjust L3  & L4. I do have power on the board. I
> unplugged the 160 board, but nothing  changed. I never had to
> troubleshoot putting it together a year ago. Any  suggestions on
> where to start looking?  Tnx de NN5G
>
--
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.5.430 / Virus Database: 268.15.3/562 - Release Date: 12/1/2006
1:12 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] K1 - zero beat question

[Mike Morrow]

Dohn wrote:

>...I have studied norse and I have every intention of making some
>contacts this weekend.

Is there a Norwegian contest going?  :-)

>My question:  I have watched my mentor zero beat with a factory transceiver.
>It was fascinating and I think I understand the concept.  I don't exactly
>understand how to do it with my K1.  It seems like I should be doing it just
>like any other rig conceptually.  How can this be accomplished?

If you have correctly set C13 on the K1 RF board during initial alignment, your 
transmitter frequency will be offset from the receiver zero-beat by an amount 
about equal to the sidetone you select (although using the menu to change the 
sidetone has no effect on the offset on the K1).

This means that all you do is tune in the desired signal until the tone you 
hear as the other station transmits is about the same as the 
___
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 Control, Internet Server, Microsoft Or Linux???

[Larry Phipps]

If you use HRD, Simon has a remote server integrated into the software. 
You'll need a router with the ability to do port forwarding to allow 
access to the incoming TCP port , and you'll need to disable the 
firewall for HRD.  It runs as a service and  will run on NT/2K/XP. The 
info is in the HRD help file.


73,
Larry N8LP


[EMAIL PROTECTED] wrote:
I've been looking at getting a desktop PC dedicated to my hamshack.  Of 
course, I want to do the usual stufflogging, rig control, digital 
modes, etc., but I also would like to do remote control over the Internet. 
 Do a little hamming or at least listening on my K2 from my hotel room in 
the evening when I am out of town.


1)  Can I use the same PC to control my ham radio & to be my webserver?
2)  Got a quote on a locally built desktop...3000 AMD, 512 RAM, 80 Gig 
etc., with XP-Home...  Does this sound adquate?
3)  Will MS-XP-Home work? 
4)  Recommended software for webserver"Frontpage?"
5)  Is wireless adequate?  (I'm thinking about looking for a wireless 
booster)
6)  Should I consider Linux for an operating system ... orwill that 
just make everything non-standard?


As you can see, this area of building up a webserver is new to meso 
I'm trying to sort thru the hardware & software issues.  From a software 
stand point, I'll probably look at Ham Radio Deluxe first& then I 
guess I need a program to build the website with& then, is there a 
specific Internet server software, I need, too???


73, Lynn
K5AVJ (K2 #1411)
___
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] Whoops!

[Paul Kelly]

I was in the process of adjusting L3 & L4 after  installing the K160RX for 
max power, when I got a HI CUR indication, then lost  all power. The LCD does 
not light. Yes, I was using the plastic tool to adjust L3  & L4. I do have 
power on the board. I unplugged the 160 board, but nothing  changed. I never 
had to troubleshoot putting it together a year ago. Any  suggestions on where 
to start looking?  Tnx de NN5G

___
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] OT Wullenweber Array

[Fernando Quinones]

Nice picture but I notice on close up the shadows cast by the poles

shows the sun to be in a different place than the shadows case but  
the building, etc.



Maybe I'm seeing this differently on my Mac.


Heck the building looks a bit like a Norcal 40 from above. hi..


On Dec 1, 2006, at 12:16 PM, Terry Conboy wrote:




The huge array in Imperial Beach was still there when I passed it  
last month.  It's hard to miss!
http://googlesightseeing.com/maps? 
p=872&c=&t=k&hl=en&ll=32.593603,-117.129053&z=17
(The text on this page is confusing: the Navy Training Center  
referred to is in San Diego.)


Fernando Quinones N2FQ




___
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 Control, Internet Server, Microsoft Or Linux???

[lbailey]

I've been looking at getting a desktop PC dedicated to my hamshack.  Of 
course, I want to do the usual stufflogging, rig control, digital 
modes, etc., but I also would like to do remote control over the Internet. 
 Do a little hamming or at least listening on my K2 from my hotel room in 
the evening when I am out of town.

1)  Can I use the same PC to control my ham radio & to be my webserver?
2)  Got a quote on a locally built desktop...3000 AMD, 512 RAM, 80 Gig 
etc., with XP-Home...  Does this sound adquate?
3)  Will MS-XP-Home work? 
4)  Recommended software for webserver"Frontpage?"
5)  Is wireless adequate?  (I'm thinking about looking for a wireless 
booster)
6)  Should I consider Linux for an operating system ... orwill that 
just make everything non-standard?

As you can see, this area of building up a webserver is new to meso 
I'm trying to sort thru the hardware & software issues.  From a software 
stand point, I'll probably look at Ham Radio Deluxe first& then I 
guess I need a program to build the website with& then, is there a 
specific Internet server software, I need, too???

73, Lynn
K5AVJ (K2 #1411)
___
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] OT Wullenweber Array

[k3yt]

Ok, so who's using my name

Bob Scott 

K3YT
___
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] Power out ratings of K2 / 100 finals?

[Don Wilhelm]

Kieth,

I see 10 to 14 watts for the 2SC1969 and 100 watts for the 2SC2879 on the
data sheets I have here.

That is for one transistor - and yes, the K2 design is using them in a
conservative manner.  To get more out of them, they have to be driven harder
and the power dissipation goes up drastically (the heat sink may no longer
be adequate) and the intermodulation distortion increases a lot.  Plus,
those ratings are into an ideal load (read perfect SWR=1).

Hams seem to have a desire to run devices near their maximum ratings, but
even though they can be made to provide more power, the consequence is
reduced component life and durability - and solid state stuff goes POOF
quickly if th heat cannot be conducted away fast enough.  A conservative
design should allow the components to live a good long life unless they are
subjected to abuse of some nature.

73,
Don W3FPR

> -Original Message-

> I got curious so I dug up the data sheets on the K2 finals and the
> KPA100 finals.
>
> K2 finals say 20 watts output, KPA100 say 100.
>
> Is that for one transistor or two?  If two, that suggests the K2 and
> KPA100 are really taking it easy on those parts and they should last a
> long time, right?
>
> - Keith N1AS -
>
--
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.5.430 / Virus Database: 268.15.3/562 - Release Date: 12/1/2006
1:12 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

[Elecraft] K-1 Carry Case

[jeanie parker wa6uvf]

Tnx for all the helpful info on finding a carry case for my K-1. I've decided 
on a Pelican case for strength and cushioning. I'll be taking both my KX-1 
(already in a Pelican case) and my K-1 to VU7-Bangaram Island, Jan, 2007 to 
support us QRP'ers.
88, Jeanie, wa6uvf
___
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] Audio Filter Sold

[w1hyv]

Thanks to all who responded.  The first person who responded got it.

Alan
___
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] OT Wullenweber Array

[wesbflyer]

The manual is pretty intersting reading, at least for us techie types. The tall 
reflector must be a sight. Have to drive by next time I'm down in SD.

Wes
___
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] OT Wullenweber Array

[Terry Conboy]

At 11:02 AM 2006-12-01, Phil Kane wrote:

On Fri, 1 Dec 2006 09:40:47 -0700, Bob Cunnings wrote:
>While we're at it, I remember that an FRD-10 was in operation at NSGA
>San Diego which we called the "Dinosaur Cage". That was eons ago,
>don't know if it still exists.

  Imperial Beach.  AFAIK it's been gone for quite a while.  When
  I first joined the FCC in the late Sixties, there were several
  such monitoring installations that were co-located with NSG
  facilities using their Type Ws.


The huge array in Imperial Beach was still there when I passed it 
last month.  It's hard to miss!

http://googlesightseeing.com/maps?p=872&c=&t=k&hl=en&ll=32.593603,-117.129053&z=17
(The text on this page is confusing: the Navy Training Center 
referred to is in San Diego.)


From http://www.nbc.navy.mil/index.asp?fuseaction=information.infoWhoWeAre
The Silver Strand Training Complex, formerly known as the Naval Radio 
Receiving Facility, has become the premier training facility for the 
Navy's special forces. This facility is referred to locally as, the 
"elephant cage", which is the nickname of the large "Wollan Weber" 
circular antenna. The antenna area was used to provide primary 
communication links for the Navy's submarine community. Today this 
450-acre facility provides an excellent training environment with 
waterborne approaches from both the Pacific Ocean and San Diego Bay 
sides. The city-like layout of the base also provides a realistic 
site for critical urban warfare training.


So what if they can't spell the name of the array...

73, Terry N6RY
Carlsbad, CA

___
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] OT Wullenweber Array

[David Cutter]

If there's one thing the Navy do not like, it's being shown up by another 
branch.  I heard tell of a newbie secretary who typed up some minutes and 
put the attendees in alphabetical order.  The Navy refused to attend the 
next meeting until they were at the top - it's probably an 'urban legend' 
but they like to be considered the 'senior service.'


David
G3UNA

- Original Message - 
From: "Phil Kane" <[EMAIL PROTECTED]>

To: "Bob Cunnings" <[EMAIL PROTECTED]>; 
Sent: Friday, December 01, 2006 7:02 PM
Subject: Re: [Elecraft] OT Wullenweber Array



On Fri, 1 Dec 2006 09:40:47 -0700, Bob Cunnings wrote:


While we're at it, I remember that an FRD-10 was in operation at NSGA
San Diego which we called the "Dinosaur Cage". That was eons ago,
don't know if it still exists.


 Imperial Beach.  AFAIK it's been gone for quite a while.  When
 I first joined the FCC in the late Sixties, there were several
 such monitoring installations that were co-located with NSG
 facilities using their Type Ws.

 The straw that broke the camel's back was when we DFed the
 Appollo splashdowns to much greater accuracy than the Navy did,
 using the same antenna.  Their plotting system was computerized.
 Ours was still the compass-and- string system dating from years
 before WW-II.  This emvarrassed them no end and they were in no
 mood to renew the shared-use agreement when it ran out.

--
  73 de K2ASP - Phil Kane
  Elecraft K2/100   s/n 5402



___
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] FS: T1 tuner built

[Gene]

I have a very nice T1 tuner for sale.  Having gotten a K1 already built this 
is surplus to my needs.  I built it but had to send it in to Elecraft to be 
check as I could not get it to work.  Wayne worked on it and fixed my goofs 
and now it works great. Price: $135.00 plus shipping and ins.

73
Gene n0mq


___
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] OT Wullenweber Array

[Rick Dettinger]

FRD-10 is only a receiving antenna. Even if you used it for transmitting,
it's still just basically a bunch of monopole verticals.

It probably has a ground system most vertical owners would lust after.

You can read the original US military technical manual here
http://kahuna.sdsu.edu/~mechtron/PremRxPage/ref/wullenweber.pdf

Ron AC7AC

=
I wonder if a good or any ground system is needed if the antenna is for
receive only.  Is a ground system just for efficiency or is it necessary for
direction finding accuracy?
Rick Dettinger
K7MW

___
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] AF mini module - needs a notch filter.

[Darwin, Keith]

Please, come out with an enhanced version that has a notch filter!
 
Anyone have a good circuit for a notch filter I could bread-board up and
add up stream from the AF mini module?
 
- Keith N1AS -
___
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] OT Wullenweber Array

[Phil Kane]

On Fri, 1 Dec 2006 09:40:47 -0700, Bob Cunnings wrote:

>While we're at it, I remember that an FRD-10 was in operation at NSGA
>San Diego which we called the "Dinosaur Cage". That was eons ago,
>don't know if it still exists.

  Imperial Beach.  AFAIK it's been gone for quite a while.  When
  I first joined the FCC in the late Sixties, there were several
  such monitoring installations that were co-located with NSG
  facilities using their Type Ws.

  The straw that broke the camel's back was when we DFed the
  Appollo splashdowns to much greater accuracy than the Navy did,
  using the same antenna.  Their plotting system was computerized.
  Ours was still the compass-and- string system dating from years
  before WW-II.  This emvarrassed them no end and they were in no
  mood to renew the shared-use agreement when it ran out.

--
   73 de K2ASP - Phil Kane
   Elecraft K2/100   s/n 5402



___
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] OT Wullenweber Array

[Bob Scott]

So the military no longer needs HF direction finding or have they 
replaced it with something smaller/better/cheaper?  Well maybe not the 
latter.


Bob
W4ZY
___
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] OT Wullenweber Array

[Ron D'Eau Claire]

While it's an impressive array, it's really just a directive receiving
antenna: a bunch of vertical monopoles more descriptively called a
"circularly disposed antenna array" or CDAA. They are arranged in a circle
with a reflective screen behind them so the direction of an arriving signal
can be determined by the phase difference in the signal as it arrives at two
or more monopoles facing generally in the right direction. 

Since even the US Military can't create a "magic" antenna that defies
physics, the system has a limited bandwidth. To cover a large part of the HF
spectrum, the system is actually three separate antenna arrays covering
three adjacent frequency ranges. Since each system gets smaller as the
frequency goes higher, the three systems "nest" one inside the other, which
makes for a very complicated-looking layout but it's really just a simple
ring of monopoles with a reflector behind each ring (one reflector serves on
two bands so there's only two circular reflector screens). 

Unless you are trying to determine the direction from which a signal is
arriving, it's not much better than most backyard verticals. 

FRD-10 is only a receiving antenna. Even if you used it for transmitting,
it's still just basically a bunch of monopole verticals. 

It probably has a ground system most vertical owners would lust after.

You can read the original US military technical manual here
http://kahuna.sdsu.edu/~mechtron/PremRxPage/ref/wullenweber.pdf

Ron AC7AC


___
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

[w1hyv]

Built and in perfect condition.  This unit comes with the female connectors 
that go on the control board.  Asking $59 plus shipping or best offer.

73
Alan
___
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] A case for W1?

[Larry Phipps]

Thanks for the mention, Mike. The LP-100 is a high end instrument aimed 
at both shack and bench work, with a wide array of features and NIST 
traceable accuracy. It is a fun kit to build, covers 50 mW to 2500W with 
autoranging, and would look really good sitting on top that new KPA800 
or 1500 ;-)


The LP-300 is a digital handheld wattmeter I showed at Dayton, and plan 
to release after the holidays. I am also working on a repackaged version 
in a normal form factor case with an optional serial port, which would 
work with the existing LP-100 windows software . It would become kind of 
an LP-100 "light", with lower power consumption, smaller size and 
lighter weight. It would not have the vector impedance (phase) 
measurement capability of the LP-100, but would retain the NIST 
traceable calibration. The power range would be 5mW to 150W.


Check them out at my website. I am interested in any feedback off-list.

73,
Larry N8LP
www.telepostinc.com



Mike Short wrote:

 There is such a thing, it is called the LP-100.
http://www.telepostinc.com/

It is a kit as well. Fine piece of gear.

Mike
AI4NS

___
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] K2 Power setting

[Paul Del Negro]

I just found out that it needs to be set in the Po28 menuDuh...read 
the instructions, Paul

Thanks
Paul N2PD
___
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 Power setting

[Paul Del Negro]

Is the "requested" output power of the K2 (ser# 058xx) limited by the
firmware on 10 and 12 meters to 10 watts?  When setting the power output
on these bands (not key down)  rotating the power control brings the
display up to 10.0 at about 75 percent rotation on these 2 bands, and
the remaining 25 percent of rotation to max makes no change to the
display.  I thought I had read something on here about power being
limited to 12 watts on 12 and 10, but can't find it now.
Paul
N2PD

___
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] OT Wullenweber Array

[Bob Cunnings]

While we're at it, I remember that an FRD-10 was in operation at NSGA
San Diego which we called the "Dinosaur Cage". That was eons ago,
don't know if it still exists.

Bob NW8L

On 12/1/06, Paul Picking <[EMAIL PROTECTED]> wrote:

Greetings all,
   I believe there is still one at Misawa AFB in Japan as well. I was there in 
the  early 70's as a voice intercept op ---  Russian language
The one in the Phillipines has been deactivated for decades  I believe. 
Paul WD8OJL



Fred posted

"There used to be an elephant cage at Skaggs Is., northeast of the top of
San Pablo Bay in the N. SF Bay area.  It's gone now.  There was also one
at Clark AB in the Philippines in the mid-60's.  Don't know what
happened to it, but if it lasted after the US left Vietnam, it likely
succumbed to Mt. Pinatubo.  I don't think these things had a lot of
gain, but they were broadband (most ELINT stuff is), and could feed
multiple rx simultaneously.  Broadband and gain in the same sentence is
an oxymoron ... witness log-periodic arrays.

Fred K6DGW"
___
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] One-Way Propagation?

[John Magliacane]

In addition to the other issues mentioned on this subject, the Earth's magnetic
field causes bending, twisting, and rotation that may not necessarily obey the
law of reciprocity in the reverse direction.


73, de John, KD2BD


Visit John on the Web at:

http://kd2bd.ham.org/
.
.
.
.


 

Yahoo! Music Unlimited
Access over 1 million songs.
http://music.yahoo.com/unlimited
___
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] KX1 Receiver Deaf

[Don Wilhelm]

Nate,

The most likley problem is that you may not be getting a signal from the DDS
to pin 6 of the receive mixer (U6).

Does it transmit with good power?  If not, check L4 and L5 with an ohmmeter
to see if they are open - they are easily damaged when installing them.

If it transmits, then check C3 for correct value and proper soldering.  If
you have an RF Probe (or can construct one), check the RF Voltage at U6 pin
6 - it should be greater than 70 mV to meet the mixer specs, but the usual
amplitude is half a volt of more.

73,
Don W3FPR

> -Original Message-
>
> I recently built a KX1 with 3080 and tuner options.  Initially I
> had low audio but resolved by fixing a missed solder joint.  With
> that done, It passed the initial alignment and all seemed fine.
> With proper ear buds the audio level is actually a bit loud for
> me.  Unfortunately, unless I touch the circuit board near U6 the
> unit is deaf.  Touching the board brings the unit to life and the
> receive is pretty good.  I've resoldered everything in the area.
> Also checked voltages at U6.  They 'seem' ok, but about 0.5 v
> higher than spec'd on pins 5 and 6.  I've removed the tuner (
> which seems to work ) and replaced with jumper and tested with
> same results - deaf receiver.  Could it be a CAP, since I'm a
> pretty big capacitive load?
>
>
--
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.5.430 / Virus Database: 268.15.2/559 - Release Date: 11/30/2006
5:07 AM

___
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] Rework eliminators

[Jeremiah McCarthy]

Solder wick should be avoided?...Wish I knew that 40 years ago...

Everything has it's purpose...Solder wick works very well in those instances 
where excess solder on the inaccessible "other side" of the board will not 
respond to solder suckers like the Hakko 808...The sudden blast of air, sucked  
through the joint, chills and solidifies the solder before it can all be 
removed...This is particularly a problem on any joint that is on the ground 
foil on the far side of the board...I've built, up-graded, and repaired a lot 
of Elecrafts and would not want to be without the Hakko 808 and solder wick...

Jerry, wa2dkg
___
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] KX1 Receiver Deaf

[nlhouck]

I recently built a KX1 with 3080 and tuner options.  Initially I had low audio 
but resolved by fixing a missed solder joint.  With that done, It passed the 
initial alignment and all seemed fine.  With proper ear buds the audio level is 
actually a bit loud for me.  Unfortunately, unless I touch the circuit board 
near U6 the unit is deaf.  Touching the board brings the unit to life and the 
receive is pretty good.  I've resoldered everything in the area.  Also checked 
voltages at U6.  They 'seem' ok, but about 0.5 v higher than spec'd on pins 5 
and 6.  I've removed the tuner ( which seems to work ) and replaced with jumper 
and tested with same results - deaf receiver.  Could it be a CAP, since I'm a 
pretty big capacitive load? 

The build was fun and I'm learning a lot, but could really use someone to help 
me clear the cobwebs and work through this problem.  Thanks in advance for any 
help you can offer as I'm anxious to play on the air.  I don't want to operate 
the unit with my finger stuck on the circuit board, I might give people the 
wrong impression of ham radio operators.

73 de
KC2MJT
Nate Houck
___
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] 2 small problems with K2 4498

[Don Wilhelm]

Bob,

The first place to look is at your toroids - especially the Low Pass Filter.
Count the turns carefully - count only the turns as they pass through the
center of the core.

Also check the winding of T2 - it must be wound exactly like the diagram in
the manual.  That may be limiting your power output on the higher bands.

You have lower power on the higher band of each band pair in the low pass
filters and that leads me to suspect that you may have one too many turns on
your toroids.

73,
Don W3FPR



> -Original Message-
>
> I had, more or less to change the PA 2sc1969 4 time, since more
> than two years of usage (and it's working, I did the last CQWWCW
> contest with it). I have two bans that are not working properly.
> 1.8 ans 3.5 !
> 1.8 power = 0.8 w full blast !
> 3.5 power = 3.8 wfull blast too !
> 7 = 11 w
> 10 = 9 w
> 14 = 11 w
> 18 = 9 w
> 21 =7 w
> 24 = 6.5 w
> 28 = 5.5 w
> I may be a little on the low side but the results are consistant;
> I did not had any change exchangind the PA pair. All the chain is
> working correctly starting from the mixer output and the signal
> tracing does not give me any indication where I may start to look!!!
> Any able to help me?
> 72 from F5UL/Bob
>
--
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.5.430 / Virus Database: 268.15.2/559 - Release Date: 11/30/2006
5:07 AM

___
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] OT Wullenweber Array

[Paul Picking]

Greetings all,
   I believe there is still one at Misawa AFB in Japan as well. I was there in 
the  early 70's as a voice intercept op ---  Russian language
The one in the Phillipines has been deactivated for decades  I believe. 
Paul WD8OJL



Fred posted

"There used to be an elephant cage at Skaggs Is., northeast of the top of 
San Pablo Bay in the N. SF Bay area.  It's gone now.  There was also one 
at Clark AB in the Philippines in the mid-60's.  Don't know what 
happened to it, but if it lasted after the US left Vietnam, it likely 
succumbed to Mt. Pinatubo.  I don't think these things had a lot of 
gain, but they were broadband (most ELINT stuff is), and could feed 
multiple rx simultaneously.  Broadband and gain in the same sentence is 
an oxymoron ... witness log-periodic arrays.

Fred K6DGW"
___
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] Power out ratings of K2 / 100 finals?

[Darwin, Keith]

I got curious so I dug up the data sheets on the K2 finals and the
KPA100 finals.
 
K2 finals say 20 watts output, KPA100 say 100.
 
Is that for one transistor or two?  If two, that suggests the K2 and
KPA100 are really taking it easy on those parts and they should last a
long time, right?
 
- Keith N1AS -
___
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

Fw: [Elecraft] One-Way Propagation?

[Geoffrey Mackenzie-Kennedy]

Sorry about bandwidth, my post got lost.

73, Geoff
GM4ESD

- Original Message - 
From: "Geoffrey Mackenzie-Kennedy" <[EMAIL PROTECTED]>

To: "Elecraft Discussion List" 
Sent: Friday, December 01, 2006 12:46 PM
Subject: Re: [Elecraft] One-Way Propagation?


Jeff, as Kevin says 'you will find odd occurrences', and so called 'One 
Way skip' does occur probably more often than people used to believe. 
There are several explanations as to how this could take place which are 
too lengthy to discuss on the Reflector, but one thing is for certain 
which is that the more people find out about "Propagation", the less we 
really know! As Kevin says the ionospheric layers are usually oddly shaped 
and constantly in a state of flux and do not resemble those squeaky clean 
things seen in many text books. To add to the mix layers within a layer 
will quite often appear at some time of the day centred over one or more 
places on the planet. Out of this confusion it is possible to find the 
path that a signal might follow from A to B, and why a signal from B to A 
might start off using the same path back to A but is refelected to another 
path back to earth and is not heard at A, but might be heard somewhere 
near A. This is part of the story!


73,
Geoff
GM4ESD

On Friday, December 01, 2006 3:17 AM, Kevin KD5ONS wrote:


Howdy Jeff,
   If you get on 20 meters in the morning, while you are in the early 
morning hours and the operator with whom you are working is in an area 
later in the day, you will find some odd occurrences.  Some days you hear 
better than the other op and some days it is the reverse.  The ionosphere 
is not a perfectly spherical reflector.  From empirical evidence I have 
found it to be quite oddly shaped indeed.  Think of the layer you're 
bouncing your signals off as a boiling layer where the surface changes 
direction rapidly.


   As far as being truly one way?  Occasionally I hear ops extremely well 
but they cannot hear me.  I hope it is not that they are ignoring me but 
simply cannot hear me.  This is what I call one-way propagation.



> On Thu, 30 Nov 2006 17:05:12 -0800, Jeff <[EMAIL PROTECTED]> wrote:


Is there really such a thing as one-way ionospheric propagation?  My 
intuition says no, but I don't have the physics knowledge to back it 
up. On the other hand, sometimes it sure seems that stations who ought 
to be able to hear my QRP signal cannot.






___
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] 2 small problems with K2 4498

[Robert DROGOUL]

I had, more or less to change the PA 2sc1969 4 time, since more than two years 
of usage (and it's working, I did the last CQWWCW contest with it). I have two 
bans that are not working properly. 1.8 ans 3.5 !
1.8 power = 0.8 w full blast !
3.5 power = 3.8 wfull blast too !
7 = 11 w
10 = 9 w
14 = 11 w
18 = 9 w
21 =7 w
24 = 6.5 w
28 = 5.5 w
I may be a little on the low side but the results are consistant; I did not had 
any change exchangind the PA pair. All the chain is working correctly starting 
from the mixer output and the signal tracing does not give me any indication 
where I may start to look!!!
Any able to help me?
72 from F5UL/Bob
___
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] One-Way Propagation?

[Geoffrey Mackenzie-Kennedy]

Tom,

Have you noticed any change in the direction of path skew during the 45 
minutes around your sunset, or is it always a 'Great Circle path'?


73,
Geoff
GM4ESD


- Original Message - 
From: "Tom Althoff" <[EMAIL PROTECTED]>

To: 
Sent: Friday, December 01, 2006 10:39 AM
Subject: Re: [Elecraft] One-Way Propagation?


Consistantly over the past 40 years I reaffirm on a daily basis that, at 
least on 40M,  as the sun lowers in the west I can hear European stations 
about 45 minutes to an hour before they can hear me.


I have no explanation for it but suspect that the signal level is the same 
on both ends but the background noise from the daylight side masks the 
signal as it appears in Europe.


Tom K2TA




___
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] A case for W1?

[Siu Johnny]

Hi Mike,

If you read my previous email, you would know that I am actually a user of 
LP100.  No doubt, LP is a nice gear with exceptional value for money.  
However, LP100 is more convenient to be used in the bench or shack.  W1 is 
a handy tool for casual measurement and may be likely used in the field.


I would like to have a customised enclosure for W1.  Unlike other mini 
module from elecraft, W1 will be used more often and in the field.


I would treat LP100 as a bench equipment for more serious measurements.  In 
terms of operational convenience, LP100 is better than my Bird 43.


73

Johnny Siu VR2XMC


From: "Mike Short" <[EMAIL PROTECTED]>
To: 
Subject: RE: [Elecraft] A case for W1?
Date: Fri, 1 Dec 2006 06:04:46 -0600

 There is such a thing, it is called the LP-100.
http://www.telepostinc.com/

It is a kit as well. Fine piece of gear.

Mike
AI4NS

___

_
与联机的朋友进行交流，请使用  Live Messenger; 
http://get.live.com/messenger/overview 


___
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] One-Way Propagation?

[Geoffrey Mackenzie-Kennedy]

Jeff, as Kevin says 'you will find odd occurrences', and so called 'One Way 
skip' does occur probably more often than people used to believe. There are 
several explanations as to how this could take place which are too lengthy 
to discuss on the Reflector, but one thing is for certain which is that the 
more people find out about "Propagation", the less we really know! As Kevin 
says the ionospheric layers are usually oddly shaped and constantly in a 
state of flux and do not resemble those squeaky clean things seen in many 
text books. To add to the mix layers within a layer will quite often appear 
at some time of the day centred over one or more places on the planet. Out 
of this confusion it is possible to find the path that a signal might follow 
from A to B, and why a signal from B to A might start off using the same 
path back to A but is refelected to another path back to earth and is not 
heard at A, but might be heard somewhere near A. This is part of the story!


73,
Geoff
GM4ESD

On Friday, December 01, 2006 3:17 AM, Kevin KD5ONS wrote:


Howdy Jeff,
   If you get on 20 meters in the morning, while you are in the early 
morning hours and the operator with whom you are working is in an area 
later in the day, you will find some odd occurrences.  Some days you hear 
better than the other op and some days it is the reverse.  The ionosphere 
is not a perfectly spherical reflector.  From empirical evidence I have 
found it to be quite oddly shaped indeed.  Think of the layer you're 
bouncing your signals off as a boiling layer where the surface changes 
direction rapidly.


   As far as being truly one way?  Occasionally I hear ops extremely well 
but they cannot hear me.  I hope it is not that they are ignoring me but 
simply cannot hear me.  This is what I call one-way propagation.



> On Thu, 30 Nov 2006 17:05:12 -0800, Jeff <[EMAIL PROTECTED]> wrote:


Is there really such a thing as one-way ionospheric propagation?  My 
intuition says no, but I don't have the physics knowledge to back it  up. 
On the other hand, sometimes it sure seems that stations who ought  to be 
able to hear my QRP signal cannot.




___
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] One-Way Propagation?

[David Honey]

At 10:39 01/12/2006, Tom Althoff wrote:
Consistantly over the past 40 years I reaffirm on a daily basis 
that, at least on 40M,  as the sun lowers in the west I can hear 
European stations about 45 minutes to an hour before they can hear me.


I have no explanation for it but suspect that the signal level is 
the same on both ends but the background noise from the daylight 
side masks the signal as it appears in Europe.


I think that Tom has made an important point here. Our ability to 
copy is based on the signal to noise ratio. I think that the path 
loss will be the same in both directions. However, if the 
transmitting station uses more power or the receiving station has a 
lower noise level, then the ability to copy will be markedly 
different in each direction. Local band noise, QRN, QRM and so on can 
make a big difference. Using a directional antenna for receive can 
greatly improve S/N. One thing that I regularly notice as 20m starts 
to close to North America from the UK is that while overall signal 
strength can fade over half an hour by 2 or 3 S units, the band noise 
also drops, so sometimes readability is hardly impaired. Eventually, 
of course, the signal level drops to the point where S/N is degraded 
and then you have to wrap the QSO up fairly quickly because it 
disappear within fairly quickly after that.


Seasons greetings,
David, M0DHO. 


___
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] OT Wullenweber Array

[N2EY]

You can also see the array without Google Earth by going to Google Maps, 
entering "Anchorage", and then searching to the northeast of the city, in 
Elmendorf AFB. The satellite option has some impressive views when you zoom in.

73 de Jim, N2EY

___
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] A case for W1?

[Mike Short]

 There is such a thing, it is called the LP-100.
http://www.telepostinc.com/

It is a kit as well. Fine piece of gear.

Mike
AI4NS

___
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] One-Way Propagation?

[Tom Althoff]

Consistantly over the past 40 years I reaffirm on a daily basis that, at 
least on 40M,  as the sun lowers in the west I can hear European stations 
about 45 minutes to an hour before they can hear me.


I have no explanation for it but suspect that the signal level is the same 
on both ends but the background noise from the daylight side masks the 
signal as it appears in Europe.


Tom K2TA

- Original Message - 
From: "Kevin Rock" <[EMAIL PROTECTED]>

To: 
Sent: Thursday, November 30, 2006 10:17 PM
Subject: Re: [Elecraft] One-Way Propagation?



Howdy Jeff,
   If you get on 20 meters in the morning, while you are in the early 
morning hours and the operator with whom you are working is in an area 
later in the day, you will find some odd occurrences.  Some days you hear 
better than the other op and some days it is the reverse.  The ionosphere 
is not a perfectly spherical reflector.  From empirical evidence I have 
found it to be quite oddly shaped indeed.  Think of the layer you're 
bouncing your signals off as a boiling layer where the surface changes 
direction rapidly.  This describes rapid QSB.  Other times you'll hear 
very slow, but deep, QSB.  At that point the reflecting layer is starting 
to calm down a bit but there are still bumps in it.  Under perfect 
conditions the received and transmitted signal meet a perfectly smooth 
reflective sheet which allows the two of you to communicate quite equally.
   As far as being truly one way?  Occasionally I hear ops extremely well 
but they cannot hear me.  I hope it is not that they are ignoring me but 
simply cannot hear me.  This is what I call one-way propagation.


Please accept this as a non-scientific, entirely empirical experiment of 
my own accord on propagation characteristics.

   Kevin.  KD5ONS



On Thu, 30 Nov 2006 17:05:12 -0800, Jeff <[EMAIL PROTECTED]> wrote:


Kevin, KD5ONS, wrote:
"One way propagation is not unheard of..."

Is there really such a thing as one-way ionospheric propagation?  My 
intuition says no, but I don't have the physics knowledge to back it  up. 
On the other hand, sometimes it sure seems that stations who ought  to be 
able to hear my QRP signal cannot.


73 & 72,
Jeff
WB5GWB
Long Island, NY

___
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] Amidon core

[Håkan Olsson]

Thanks for info Geoff/GM4ESD and Graham/KE9H!

I will report back when the new core is installed to see if there's any 
improvement.


73 de
Håkan / SM6EQO
___
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