Date   

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


Wed Nite Nets

WA0ITP
 

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@wa0itp.com


Digipan hanging up on me

moshecontra
 

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?



Coax as Impedance Transformer and etc.

Chuck Carpenter
 

4SQRPers,

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 (input) 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.

So, changing the dipole model to 33.5 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: Membership Certificate

Michael McEwen
 

Look forward to the result...I don't post much wallpaper In my shack, but this will be prominent...I am very glad I brought this whole issue up and hope it has not been a hassle for you guys...I love this group!

_ _ ...   .. _ _ _

Doc K5OSA - QTH: EM04sr
ARRL  
4SQRP #801 - NAQCC #7625 - SKCC #10098
FISTS #17157 - OMISS #9886
LFSARC (Lawton/Fort Sill Amateur Radio Club)

Michael T McEwen
Lt Col, US Army, Ret

Cellular Phone:  580 919-9205
Residence:  580 529-3412


On Fri, May 22, 2015 at 9:15 AM, WA0ITP wa0itp@... [4sqrp] <4sqrp@...> wrote:
 

Only Nine days left until the end of the member cert is chosen. Please
send your creations to me, or as as an attachment to a post to the
Group. Put the word "certificate" or just "cert" in the subject line, so
my filter will grab it. I'll make a web of all entries, to present to
the board for voting.

It has been suggested that the winning cert be added to the web site as
an editable PDF document, so recipients could type their call and member
number into it on screen, and then it print out on their own printer.
Sounds like a great idea, does anyone have the ability to do that? Can
the winning pdf be imported into a pdf creator program, or must the
design be completely created within the program?

Coupla thngs to consider while you're designing:
They can be created in any program you wish, or even online pages. We'll
convert them to another format later if needed. The new logo should
appear sonewhere. If your design has a line or space for an official's
name, it should be Wayne Dillon's. Wayne, KC0PMH, is our membership
chairman. Also, actual signatures should be avoided, too easy to lift
and use them in this day and age of screen capture programs and identity
theft. Script fonts are probably ok.

We have four entries so far, keep 'em coming. We need more from which
to choose, the more the better. Anyone can submit one, and multiple
entries per individual are welcome. Multicolor, plain, fancy, with or
without graphics, all are welcome. The winner will receive many thanks
and great accolades form the Group..

Thanks vy much

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



RMRc cw practice net

Dale Putnam
 



 

The Rocky Mountain Region and Continental cw practice net will be called today at 4:15 pm MT or 2215z on 7.0625
and again on 14.0625 at 2245z or 4:45pm
Come practice your cw .. at your speed.
Today.. when you check in, I'll let you know my temp, your rst, and if you can copy any others, and want to say Hi to them,
please let me know. I will let you two chat for a couple exchanges, after we check in folks. Swap any numbers.. or QTH info.

See you this afternoon.

Have a great day,
 










.


Re: Really dumb crystal question

Kent Trimble, K9ZTV
 

The Gonset GSB-100 was also a phasing-type SSB rig, contemporaneous with the Central Electronic exciters.

Still have one sitting in the "museum" part of my shack.

73,

Kent� K9ZTV


On 6/2/2015 10:00 AM, 'Sam Neal' n5af@... [4sqrp] wrote:
Hello,

The only ones I can think of were the " first generation " Central Electronic
10-A and 20-B rigs, which were phasing rigs, not crystal filter rigs. 

The DSB rigs such as the 
WRL " Side-bander " and the WRL/Globe Electronics " Meteor " were crystal
controlled or could be controlled with an external VFO which operated on the
frequency you wanted to operate on.

Sam Neal  N5AF
_______________________________________________________________________

-----
Hi Doc,

I don't know of any crystal controlled SSB rigs, but there are quite a number
of simple SSB rig kits out there.
The Hendricks BITX20 might be an option? Doug Hendricks retired recently and
QRP kits has been taken over by someone else, hopefully the Old range of kits
will be made available again.

Just about the simplest SSB rig that I know about is the ILER20 and ILER40.
These little rigs seem to be highly regarded.

73, Colin M1BUU




------------------------------------
Posted by: "Sam Neal" 
------------------------------------

4SQRP Website: http://4sqrp.com
Plan to attend OzarkCon on - April 1-2, 2016
View Details at http://www.ozarkcon.com/index.php
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Re: Really dumb crystal question

Sam Neal
 

Hello,

The only ones I can think of were the " first generation " Central Electronic
10-A and 20-B rigs, which were phasing rigs, not crystal filter rigs.

The DSB rigs such as the
WRL " Side-bander " and the WRL/Globe Electronics " Meteor " were crystal
controlled or could be controlled with an external VFO which operated on the
frequency you wanted to operate on.

Sam Neal N5AF
_______________________________________________________________________

-----
Hi Doc,

I don't know of any crystal controlled SSB rigs, but there are quite a number
of simple SSB rig kits out there.
The Hendricks BITX20 might be an option? Doug Hendricks retired recently and
QRP kits has been taken over by someone else, hopefully the Old range of kits
will be made available again.

Just about the simplest SSB rig that I know about is the ILER20 and ILER40.
These little rigs seem to be highly regarded.

73, Colin M1BUU


Re: To ATU or not to ATU

Don Wilhelm <w3fpr@...>
 

Doc,

You are not likely to have enough loss through a good tuner to notice.  Although the KX3 internal tuner has a bypass position, it is usually better to do an initial TUNE into even a resonant antenna than to bypass the tuner.  An antenna is usually not entirely flat across a band, and because of that, using the tuner can actually produce a better match on some of the band segments.
Even when bypassed, there is still some residual reactance in the path through the tuner, and a TUNE will compensate for that residual reactance.
Note that in the new KAT3A (announced with the advent of the K3S), Elecraft has added a relay to totally bypass the tuner, but that is not available in the KX3.

73,
Don W3FPR

On 6/2/2015 8:06 AM, Michael McEwen mcewenk5osa@... [4sqrp] wrote:
 
Need advice...I have been advised that a tuner is not good for QRP if you can avoid it...my antennas are resonate.  Will an ATU such as the KX-3 one (or any ATU) degrade my transmitted (supposedly) 5W?
_ _ ...   .. _ _ _

Doc K5OSA - QTH: EM04sr
ARRL  
4SQRP #801 - NAQCC #7625 - SKCC #10098
FISTS #17157 - OMISS #9886
LFSARC (Lawton/Fort Sill Amateur Radio Club)



Re: To ATU or not to ATU

Jim Sheldon
 

Brief answer -- not enough for you to notice it.  The one in the KX3 will match a wide range of un-resonant antennas as well in case you would ever need it.  If it isn't needed on resonant antennas at home, there is a menu item to bypass it. 
 
w0eb
 

------ Original Message ------
From: "Michael McEwen mcewenk5osa@... [4sqrp]" <4sqrp@...>
To: "QRP-L Mailing List" <qrp-l@...>; "4sqrp@..." <4sqrp@...>
Sent: 6/2/2015 7:06:16 AM
Subject: [4sqrp] To ATU or not to ATU
 


Need advice...I have been advised that a tuner is not good for QRP if you can avoid it...my antennas are resonate.  Will an ATU such as the KX-3 one (or any ATU) degrade my transmitted (supposedly) 5W?
_ _ ...   .. _ _ _

Doc K5OSA - QTH: EM04sr
ARRL  
4SQRP #801 - NAQCC #7625 - SKCC #10098
FISTS #17157 - OMISS #9886
LFSARC (Lawton/Fort Sill Amateur Radio Club)

Michael T McEwen
Lt Col, US Army, Ret

Cellular Phone:  580 919-9205
Residence:  580 529-3412




Re: To ATU or not to ATU

Wayne Dillon
 

Hi Doc,
If your antennas are resonant there's no need for an ASTU, however if you are using one antenna for several bands (I'm thinking of a multiband doublet) then and ASTU is almost always mandatory. Simple rule of thumb: resonant-no ASTU, multiband largely non resonant-ASTU needed.
I've been experimenting with a 66' wire (watch for the write-up in a future edition of "The Banner"), specifically on 20m and the ASTU I'm using does not cause me any issues with attenuation of transmitted signal - that I know of. RBN was showing my CQ being picked up out in excess of 1500 miles.
Have a blessed day
Wayne - KC0PMH

On Tue, Jun 2, 2015 at 7:06 AM, Michael McEwen mcewenk5osa@... [4sqrp] <4sqrp@...> wrote:
 

Need advice...I have been advised that a tuner is not good for QRP if you can avoid it...my antennas are resonate.  Will an ATU such as the KX-3 one (or any ATU) degrade my transmitted (supposedly) 5W?
_ _ ...   .. _ _ _

Doc K5OSA - QTH: EM04sr
ARRL  
4SQRP #801 - NAQCC #7625 - SKCC #10098
FISTS #17157 - OMISS #9886
LFSARC (Lawton/Fort Sill Amateur Radio Club)

Michael T McEwen
Lt Col, US Army, Ret

Cellular Phone:  580 919-9205
Residence:  580 529-3412




--
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: To ATU or not to ATU

Dale Putnam
 

I've used the Elecraft T1 .. and measured very little loss.. across the tuner.
Lightweight, and very trail friendly. It will match to the common antenna designs
easily.
YMMV

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

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