Date   

Re: [QRP-L] CW practice net

Dale Putnam
 

Tornado watch, Severe Thunderstorm warning...  pecip within 3 mi...
and lightning within 10....
http://www.lightningmaps.org/realtime?lang=en

I hope it passes before net time.

Have a great day,
 
 
--... ...-- Dale - WC7S in Wy
 
 


> From: daleputnam@...
> To: 4sqrp@...; qrp-l@...
> Date: Wed, 3 Jun 2015 21:43:44 -0600
> Subject: [QRP-L] CW practice net
>
>
>
>
> IF the thunderstorms and local static doesn't attack again.. we will
> have a cw practice net Thurs afternoon, starting at
>
>
> Tuesday/Thursday
> at 4:00 PM MDT, which is Tuesday/Thursday 2220 UTC, on 7062.5 kHz
>
>
>
>
> and
>
>
> Tuesday/Thursday
> at 4:30 PM MDT, which is Tuesday/Thursday 2230 UTC, on 14062.5 kHz.
> Main
> NCS - Dale WC7S (Wyoming)
>
> Have a great day,
>
>
> --... ...--
> Dale - WC7S in Wy
>
>
>
>
> ______________________________________________________________
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Thurs Morning Net

WA0ITP
 

40 was noisy this morning but 4 intrepid souls made it in.  This was the morning of dashes.   I believe that Dale, WN0WWY, has the most in a call sign, and Woody has the most in a name.  Anybody know of anyone who surpasses these?   Woody was using theYouKits EK1 that he won at OzarkCon.  It was the #2 prize in the drawing.



Thanks vy much for checking in gents, appreciate it.

-- 
72 WAØITP
I love this radio stuff.
www.wa0itp.com
wa0itp@...


Re: Digipan hanging up on me

moshecontra
 

Don: I agree with all your reasons to prefer a desktop over a laptop in general, and I give that advice to my friends who consider buying a laptop for general home use.  And of course I use a desktop as my main computer.  In my limited "shack" area, though,  it's a different story.  Even though I have a couple of spare (WinXP) desktops available, I'm trying to use a laptop due to lack of space.  And I can more easily move the laptop out of the way when I am not using it, to make room for CW key, microphone, "projects", etc.


{UpDate} Coax as Impedance Transformer and etc.

Chuck Carpenter
 

4SQRPers,

*Corrected the changed dipole dimension below to 17.25 feet. (thanks Dave)
**Added BALUN note using 40 m dipole on 20 m

---------------------------------

Modeled a simple dipole on 40 and 20 meters, 33.5 ft each side and 33 feet (~ 1/4 wave) above ground.

These model figures are only approximations of what you might expect. They generally work out pretty close to actual measurements in the field. Plus j is inductive reactance, minus j is capacitive reactance.

EZNEC 5 shows the feed point Z to be about: 83.25 +j19.78 Ohms, slightly inductive.

Using Transmission Line Details, and the above Z as the load (feedpoint) end for RG-8X (mini):

Frequency: 7.1 MHz, at input (transmitter) end,
coax length
25 ft ~ 31.84 -j13.36 Ohms 0.182 dB loss
50 ft ~ 57.73 +j27.38 Ohms 0.464 dB loss
75 ft ~ 41.60 -j23.88 Ohms 0.617 dB loss

All easily matched for optimum power transfer with a good ATU with very little additional loss.

Same antenna same height

Frequency: 14.06 MHz, Antenna feed point Z ~ 3549 +j2504 Ohms
coax length
25 ft ~ 16.39 +j125.27 Ohms 6.73 dB loss (mostly SWR)
50 ft ~ 8.43 +j53.56 Ohms 9.16 dB loss "
75 ft ~ 6.72 +j23.83 Ohms 10.6 dB loss "

Some good tuners would match the low Z but the extreme SWR loss would still be there.
**A 1:9 BALUN might be useful at the feedpoint to mitigate the high Z to a lower value.

So, changing the dipole model to *17.25 ft each side and 33 feet (~ 1 wave) above ground

Frequency: 14.06 MHz, Antenna feed point Z ~ 78.13 +j4.39 Ohms
coax length
25 ft ~ 61.93 +j19.76 Ohms 0.313 dB loss
50 ft ~ 46.06 +j17.71 Ohms 0.614 dB loss
75 ft ~ 37.96 +j9.29 Ohms 0.903 dB loss

These values could be used without an ATU with probably less than 2:1 SWR. Easy match with any good tuner.

My ATU favorites are Z-Matchers some of which will match down to 3 Ohms resistive.

Chuck Carpenter, W5USJ
EM22cv, Rains Co. TX


Re: Digipan hanging up on me

Don Wilhelm <w3fpr@...>
 

Dave,

First, you can add real serial ports to a desktop if there are none already present - it is a simple matter of adding a card.
Second, the keyboard on a laptop is not comfortable to use IMHO.
Third, you can use whichever monitor size you want to place on your desk.
Forth, the useful lifetime of desktops is much greater than laptops.
Fifth, if it breaks, it is more easily repaired than a laptop.

73,
Don W3FPR

On 6/4/2015 7:48 AM, iamkb8xg@... [4sqrp] wrote:
 

Don,


Other than the cost factor between laptops & desktops, what is your reasoning for preferring desktops vs. laptops for the ham shack?




Re: May/June Banner is up

Johnny AC0BQ
 

Thanks Jeromy 
Fine reading over coffee!
Johnny AC0BQ 


On Thursday, June 4, 2015, Wayne Dillon wayne.dillon@... [4sqrp] <4sqrp@...> wrote:
 

Seriously nice job Jeremy and a huge thank you to all the contributors. Well done all
Vy 72/3 es God Bless de Wayne - KC0PMH

On Wed, Jun 3, 2015 at 11:56 PM, Jeremy Utley jerutley@... [4sqrp] <4sqrp@...> wrote:
 

Hey Everyone!

The May/June issue of The Banner is now posted!

http://www.4sqrp.com/TheBanner.php

Since April was later than usual after waiting for Ozarkcon to be
finished, plus another month of light articles, I decided to just do a
combined issue and get things back on schedule.

From the Index:

Leo's Ghost Key
The SLC Loop
KB6NU's Column(s)
SSS Standings
From the Editor

I have an idea that I'd like to try to implement in future issues of
the Banner - I'd like to do a little "welcome" to new members of the
group in each issue, listing them each by name and callsign. However,
I'm not sure exactly how I could get ahold of this type of information
- anyone got any suggestions on a means for me to see this?

Also, keep those articles coming! Original content is great, but if
you run across something that might be of interest to the group, feel
free to point it out to me, and I'll do the legwork to get permission
to print it.

Brutus is coming, and I can't wait - hope to see you all there!

Jeremy, NQ0M
in Beautiful Downtown Iola, KS




--
http://www.qsl.net/kc0pmh/   Under construction but please visit anyway.
 
QRP -  EFFICIENCY AND SKILL, NOT POWER. 
 
I'm British by birth but American by CHOICE!

Jesus came to pay a debt He didn't owe because we owe a debt we cannot pay...

The Lord bless you and keep you
The Lord make His face shine upon you, and be gracious unto you
The Lord lift up his contenance upon you and give you peace.

God Bless from Wayne Dillon - KC0PMH

Joshua 24:14-15
2 Cor 5:17
1 Jn 2:17
 
Membership Chairman - 4SQRP Group
4SQRP #95
FISTS 17184
FPQRP #342 (Flying Pigs QRP Club)
NAQCC # 0759
QRP-ARCI #11505
SKCC #1155T
CW Ragchewers Anonymous #40
SOC #848
30MDG#1176
NEQRP #693
GORC #192
DMC (Digital Modes Club) # 06686



--
QRP....."More smiles per Watt"
72
JOHNNY AC0BQ  ..




Re: May/June Banner is up

Wayne Dillon
 

Seriously nice job Jeremy and a huge thank you to all the contributors. Well done all
Vy 72/3 es God Bless de Wayne - KC0PMH

On Wed, Jun 3, 2015 at 11:56 PM, Jeremy Utley jerutley@... [4sqrp] <4sqrp@...> wrote:
 

Hey Everyone!

The May/June issue of The Banner is now posted!

http://www.4sqrp.com/TheBanner.php

Since April was later than usual after waiting for Ozarkcon to be
finished, plus another month of light articles, I decided to just do a
combined issue and get things back on schedule.

From the Index:

Leo's Ghost Key
The SLC Loop
KB6NU's Column(s)
SSS Standings
From the Editor

I have an idea that I'd like to try to implement in future issues of
the Banner - I'd like to do a little "welcome" to new members of the
group in each issue, listing them each by name and callsign. However,
I'm not sure exactly how I could get ahold of this type of information
- anyone got any suggestions on a means for me to see this?

Also, keep those articles coming! Original content is great, but if
you run across something that might be of interest to the group, feel
free to point it out to me, and I'll do the legwork to get permission
to print it.

Brutus is coming, and I can't wait - hope to see you all there!

Jeremy, NQ0M
in Beautiful Downtown Iola, KS




--
http://www.qsl.net/kc0pmh/   Under construction but please visit anyway.
 
QRP -  EFFICIENCY AND SKILL, NOT POWER. 
 
I'm British by birth but American by CHOICE!

Jesus came to pay a debt He didn't owe because we owe a debt we cannot pay...

The Lord bless you and keep you
The Lord make His face shine upon you, and be gracious unto you
The Lord lift up his contenance upon you and give you peace.

God Bless from Wayne Dillon - KC0PMH

Joshua 24:14-15
2 Cor 5:17
1 Jn 2:17
 
Membership Chairman - 4SQRP Group
4SQRP #95
FISTS 17184
FPQRP #342 (Flying Pigs QRP Club)
NAQCC # 0759
QRP-ARCI #11505
SKCC #1155T
CW Ragchewers Anonymous #40
SOC #848
30MDG#1176
NEQRP #693
GORC #192
DMC (Digital Modes Club) # 06686


Re: Digipan hanging up on me

David Deitrick
 

Don,

Other than the cost factor between laptops & desktops, what is your reasoning for preferring desktops vs. laptops for the ham shack?

Dave
KB8XG


Re: May/June Banner is up

Dale Putnam
 

Combined, or not,  an excellent Banner!!
Thank you Jeremy!!

Have a great day,
 
 
--... ...-- Dale - WC7S in Wy
 
 



To: 4sqrp@...
From: 4sqrp@...
Date: Wed, 3 Jun 2015 23:56:11 -0500
Subject: [4sqrp] May/June Banner is up

 
Hey Everyone!

The May/June issue of The Banner is now posted!

http://www.4sqrp.com/TheBanner.php

Since April was later than usual after waiting for Ozarkcon to be
finished, plus another month of light articles, I decided to just do a
combined issue and get things back on schedule.

From the Index:

Leo's Ghost Key
The SLC Loop
KB6NU's Column(s)
SSS Standings
From the Editor

I have an idea that I'd like to try to implement in future issues of
the Banner - I'd like to do a little "welcome" to new members of the
group in each issue, listing them each by name and callsign. However,
I'm not sure exactly how I could get ahold of this type of information
- anyone got any suggestions on a means for me to see this?

Also, keep those articles coming! Original content is great, but if
you run across something that might be of interest to the group, feel
free to point it out to me, and I'll do the legwork to get permission
to print it.

Brutus is coming, and I can't wait - hope to see you all there!

Jeremy, NQ0M
in Beautiful Downtown Iola, KS


May/June Banner is up

Jeremy Utley
 

Hey Everyone!

The May/June issue of The Banner is now posted!

http://www.4sqrp.com/TheBanner.php

Since April was later than usual after waiting for Ozarkcon to be
finished, plus another month of light articles, I decided to just do a
combined issue and get things back on schedule.

From the Index:

Leo's Ghost Key
The SLC Loop
KB6NU's Column(s)
SSS Standings
From the Editor

I have an idea that I'd like to try to implement in future issues of
the Banner - I'd like to do a little "welcome" to new members of the
group in each issue, listing them each by name and callsign. However,
I'm not sure exactly how I could get ahold of this type of information
- anyone got any suggestions on a means for me to see this?

Also, keep those articles coming! Original content is great, but if
you run across something that might be of interest to the group, feel
free to point it out to me, and I'll do the legwork to get permission
to print it.

Brutus is coming, and I can't wait - hope to see you all there!

Jeremy, NQ0M
in Beautiful Downtown Iola, KS


Re: re anti-static mat

hubbardjw <hubbardjw@...>
 

Us a static strap to be safe. Ground the mat and static strap to the station ground. (I assume the station ground meets good engineering practice.)

-- 
Jerry Hubbard
hubbardjw@...
NOPGG


On 05/26/2015 06:02 PM, Dale Putnam daleputnam@... [4sqrp] wrote:
�

Wayne has experience with that exact mat.. so you're good to go.. as you already figured out..
Good Luck with the fix... and touch the ground with one hand often too...


Have a great day,
�
�
--... ...-- Dale - WC7S in Wy
�
�



To: 4sqrp@...
From: 4sqrp@...
Date: Tue, 26 May 2015 21:17:45 +0000
Subject: [4sqrp] re anti-static mat

�

Thanks for the info about cutting the mat.� Based on Dale's comment, I'm thinking maybe I should not cut it. I'll see if I can fold it or make it fit the work space somehow..

Tim, as for the snap location, with this one the snap is not installed so I can punch a hole in the mat and mount it in a convenient spot after I figure out exactly where I am going to put the mat.

73,

Sam, AL7V






CW practice net

Dale Putnam
 

IF the thunderstorms and local static doesn't attack again.. we will
have a cw practice net Thurs afternoon, starting at

Tuesday/Thursday at 4:00 PM MDT, which is Tuesday/Thursday 2220 UTC, on 7062.5 kHz

and

Tuesday/Thursday at 4:30 PM MDT, which is Tuesday/Thursday 2230 UTC, on 14062.5 kHz.


Main NCS - Dale WC7S (Wyoming)



Have a great day,
 
 
--... ...-- Dale - WC7S in Wy
 
 


Wed. night PSK checkins.

Dick Hammond
 

KA0KRN David, Ottumwa, IA.
AE5ME  Jeff, Broken Arrow, OK
AC0WZ Dan, Fulton, MO.
KD5NJR  Scott, Broken Arrow, OK  (new.)
AE5ZZ Jim, Little Rock, AR.
W0MQY Joe, Pittsburgh, KS.
Good band, good checkins, tnx everyone.
N0TGR Dick, AUGUSTA, KS,  NCS.


Wednesday Night 40m Net

dekle@...
 

Good net tonight.

QNI list:

N5AF              Sam         Cleveland, TX
WA0ITP          Terry         Ottumwa. IA
WA9PWP       Paul          Stoughton, WI
N2QFD           Mal           Elmira, NY
WD9F            Woody      Springfield, IL
KD0WF          Jim           Columbia, MO
WN0I              Andy        Jefferson City, MO
KV6Z
              Bill           Claremore, OK (NCS)


Thanks everybody & 73,


Bill

KV6Z




Wed Nite 80M net.

WA0ITP
 

Paul and Bill were the only two checkins tonight.  

Thanks gents, appreciate you being there tonight.


-- 
72 WAØITP
I love this radio stuff.
www.wa0itp.com
wa0itp@...


Re: Digipan hanging up on me

moshecontra
 

Well I chose Digipan _because_ it is old, and claims to be able to run on such old hardware.  Don't belittle the capabilities of computers from 15 or so years ago just because we have even faster ones now :-)   The processing speed of my old Win98 laptop is evidently sufficient to decode multiple incoming PSK31 signals simultaneously, for as long as I like - it's the toggling between rx and tx modes that sometimes hangs it up.  Yes I do have other computers, including a WinXP desktop right across the same room, but would be nice to have a dedicated computer for the radio work.  Perhaps I'll try a spare WinXP netbook I've got, although it lacks an audio line-level input, but mic input should work for this (after appropriate reduction in signal level).  The netbook also does not have a serial port, but I built my interface to work without one, it uses the audio signal itself to switch on the tx.  Still would be nice to figure out why the current computer has problems.


Re: Digipan hanging up on me

Bill Cromwell
 

Hi,

As Don has said you may need a better computer. Minimal is one thing. But you can't build ANY qrp transmitter with a germanium diode, a rubber band, and a wad of gum. The same thing applies to your other hardware.

You might have better results if you install one of the lite versions of linux and fldigi. One of things about linux is it's better efficiency on old hardware. But then..you have to learn about a different operating system.

73,

Bill KU8H

On 06/03/2015 04:39 PM, mbraner@hotmail.com [4sqrp] wrote:

In the QRP spirit of making do with less, I'm trying to work the PSK31 mode using a very old Windows 98 laptop that I happen to have sitting around. The Digipan software seems to run on it just fine, and I can both receive and transmit PSK31 signals OK (using a homebrew interface to the radio - I can and should write about that some time). The radio is an old Ten-Tec Argosy 525, and the antenna a homebrew 40m horizontal loop. Very cool to see text sent from all over the world, almost any time on 14,070 KHz.

But, after every several toggles back and forth between rx and tx modes, Digipan pops up a message saying "sound card already in use or does not exist", and refuses to do anything more for me until I close it and re-open it (losing the existing text on the screen). There is nothing else running on the laptop at the time, and I've also disabled the internal dial-up modem. This happens even if I don't connect the interface to the radio's PTT, so that "tx" mode is not actually transmitting. Thus I don't think it is a matter of RF feeding back into the laptop. What to do?


Re: Wed Nite Nets

Johnny AC0BQ
 

Ge Terry
Bill's up to Bat tonight, I have a board meeting.
Johnny AC0BQ 

On Wednesday, June 3, 2015, WA0ITP wa0itp@... [4sqrp] <4sqrp@...> wrote:
 

The Four State QRP Comfortable nets meet each Wednesday night
beginning at 7:30 PM Central Time.

Add anything to the exchange that you wish, temp rig, ant, etc.
Checking into all, sessions is encouraged. We call it the "Clean Sweep".

7:30 Central time ... 40M CW Net on 7122, WQ5RP, ACØBQ, or KV6Z NCS
8:30 " " ... 80M CW Net on 3564, WQ5RP/WAØITP NCS.
9:00 " " ... 80M PSK Net on 3580.5, WQ5RP/NØTGR NCS

All are welcome! After the nets, a list of checkins will be
posted on the Four State reflector.

--
72 WAØITP
I love this radio stuff.
www.wa0itp.com
wa0itp@...



--
QRP....."More smiles per Watt"
72
JOHNNY AC0BQ  ..




Re: Digipan hanging up on me

Don Wilhelm <w3fpr@...>
 

I would suggest restricting the goal of "making do with less" to the transmitter output power while using a very good receiver and a more modern computer.  After all, QRP is only about communicating with the lowest power possible - there is no sense in "shooting yourself in the foot" by attempting that with inadequate receivers and computer gear.

For the computer side of things, older computers and older operating systems often cause problems and confusion because of compatibility problems.  Digipan itself is an old application (last update was in 2004 (11 years ago).  Soundcard drivers may also be a problem.  If you are using the internal soundcard, perhaps the operating system "grabbed it" at one point in time and will then not allow Digipan to use it.  I don't think it has anything to do with your operation or Digipan, but is simply the result of using an out of date computer.

So my recommendation is to get a more recent computer, preferably a desktop if you want versatility in the hamshack computer.  You can buy an off-lease IBM computer loaded with Windows 7 Pro for $150 to $300 - that will allow you to run a larger variety of ham applications and digital mode applications as well as providing better support for soundcard drivers.  OK, those computers do not come with a monitor, but they are still inexpensive and will do the job for years to come.  Unless you do not have the space for a desktop (put it under the operating desk), shun laptops for the ham station, you will get better mileage out of a desktop.

Run Fldigi if you want an up to date no-cost digital application, or download version 5 of Ham Radio Deluxe (also no cost) if you want the added function of a built-in logger, telnet, spots, etc. - but that does take computing power that your old laptop may not have.

73,
Don W3FPR

On 6/3/2015 4:39 PM, mbraner@... [4sqrp] wrote:
 

In the QRP spirit of making do with less, I'm trying to work the PSK31 mode using a very old Windows 98 laptop that I happen to have sitting around.  The Digipan software seems to run on it just fine, and I can both receive and transmit PSK31 signals OK (using a homebrew interface to the radio - I can and should write about that some time).  The radio is an old Ten-Tec Argosy 525, and the antenna a homebrew 40m horizontal loop.  Very cool to see text sent from all over the world, almost any time on 14,070 KHz.

But, after every several toggles back and forth between rx and tx modes, Digipan pops up a message saying "sound card already in use or does not exist", and refuses to do anything more for me until I close it and re-open it (losing the existing text on the screen).  There is nothing else running on the laptop at the time, and I've also disabled the internal dial-up modem.  This happens even if I don't connect the interface to the radio's PTT, so that "tx" mode is not actually transmitting.  Thus I don't think it is a matter of RF feeding back into the laptop.  What to do?




Thurs Morning Net

WA0ITP
 

This Four State net meets each Thursday morning at
8:00 AM Central on 7122 kc,the Four State 40M hangout frequency.
NCS is WAØITP using WQ5RP, and this is a Four State members only net.

Add anything to the exchange that you wish, member number, temp, rig,
ant, etc. After the net, a list of checkins will be posted on the
Four State reflector.

Hope to cu tomorrow morning at 8:00 AM Central time

--
72 WAØITP
I love this radio stuff.
www.wa0itp.com
wa0itp@wa0itp.com

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