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Re: Loop antenna at Ozarkcon

Charles W. Powell
 

Depends on what frequency you want to use and how efficient you want your antenna to be.  Check out the site:


This will give you an idea of how loop element diameter, circumference, power input, and capacitors affect the function and efficiency, as well as the voltage that develops across the capacitor.  At QRP 5 watts  you still get in excess of 500 volts over the plates.  And remember that diameter of the loop is circumference divide by π (πd = circumference, so c/π = d).

Soft copper 1/8” tubing makes a great coupling loop but it’s not very efficient for the radiator until you get up to 50 MHz.

Send a private email to me and I will send info on the loop I recently built.

72,

Chas NK8O

On Apr 6, 2016, at 6:03 PM, Paul Smith psmith61@... [4sqrp] <4sqrp@...> wrote:

Hello Everyone,
There was a loop antenna in the home brew build items that used a MFJ 9232 loop tuner. The loop was made of 3/8 soft copper. Does anyone have any idea what the diameter of the loop was. I ordered a loop tuner and it arrived today. I have some soft drawn coper but was not sharp enough to measure the loop. I have the manual but it calls for MUCH larger loop size than this was. Any help would be appreciated.
de Paul N0NBD 
Loop antenna at Ozarkcon

Paul Smith
 

Hello Everyone,
There was a loop antenna in the home brew build items that used a MFJ 9232 loop tuner. The loop was made of 3/8 soft copper. Does anyone have any idea what the diameter of the loop was. I ordered a loop tuner and it arrived today. I have some soft drawn coper but was not sharp enough to measure the loop. I have the manual but it calls for MUCH larger loop size than this was. Any help would be appreciated.
de Paul N0NBD
NS-40 crystal switch

Bill VanKirk
 

I have an NS-40 I built a couple years ago that I would like to put on the air. I would like to switch 6 different crystals rather than change crystals to change frequency. Has anyone done this and if so is there anything special I need to consider in order to switch the crystals?

73
W0PT
Tonight's 40m net

Wayne Dillon
 

Folks,
Had some family stuff come up and I don't think I'll be home in time for the net tonight. Y'all get on and have some fun.
Be blessed everybody
Wayne - NQ0RP

--
 
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 - NQ0RP

Joshua 24:14-15
2 Cor 5:17
1 Jn 2:17
 
Membership Chairman - 4SQRP Group
4SQRP 40m NCS
4SQRP #95
FISTS 17184
FPQRP #342 (Flying Pigs QRP Club)
NAQCC # 0759
QRP-ARCI #11505
SKCC #1155T
SOC #848
30MDG#1176
NEQRP #693
GORC #192
DMC (Digital Modes Club) # 06686
Thurs Morn 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 WQ5RP/WAØITP 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
www.4sqrp.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, member number, etc.
Checking into all, sessions is encouraged. We call it the "Clean Sweep".

7:30 Central time ... 40M CW Net on 7122, NQØRP 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
www.4sqrp.com
Icom IC 7850 & Flex 6300 for sale. .../

glennj.donofri@...
 

FLex 6300

Flex 6500


Icom IC 7850

Icom IC 7600


Elecraft kx3

Elecraft K3/P3


Pls contact me with your offers.

Prices are very competitive.



73

K9FS

k9fs73@...

Dr. Bob Kieffer


.,.

/.
Second Sunday Sprint coming up

John Lonigro
 

This coming Sunday (April 10th) is the April Second Sunday Sprint (SSS). The operating rules haven't changed. The frequencies haven't changed. The time hasn't changed (7:00-9:00 pm CDT). However, the method of reporting your score HAS changed. No longer should you send me an email with your results. Instead, thanks to Diz (W8DIZ), you need to go to "qrpcontest.com" to log your scores. When you get there, select the 4SQRP Second Sunday Sprint. Once you do that, click on AUTOLOG reporting and go from there. The logging software does all the calculating and tabulating. If you have any questions that the Contest Rules link doesn't answer, please email me.

This is the first month of the new reporting method, but I've done extensive testing (slight exaggeration) and it all seems to work FB. The only change is the scores from November, 2015 through December, 2016 will be combined to determine the overall 2016 winner. Previously, it was November through September. After 2016, the contest year will coincide with the calendar year (January - December). From now on, the year's top score will be announced in January of the following year. As usual, please submit your scores promptly.

I will be busy with house guests and a family wedding this weekend and won't be checking my email very regularly. especially in the evenings.

Let's have a lot of participation this weekend, to wring out the new system.

72,

John, AA0VE

(Had a great time at Ozarkcon, as usual. Lots of good prizes, good food, and (last but not least) good companionship!)
That Strange Noise On 40 Meter CW

Sam Neal
 

Hello,

After 50 plus years of electronic keyers, I decided to join the bug operators
again. It arrived today ( VIZ vertical bug ) and is a thing of beauty - about
99 % polished brass.

I hooked it up to my WRL Globe Chief and had a nice QSO with W8TY in Lima Ohio
who was running a 5763 at 8 Watts ( and was very patient with my terrible
keying ).

This will certainly take some getting used to, after chasing DX at 45 WPM with
keyers, not having used a bug in 50 - 55 years.

How do you get used to having to manually make the dashes. I tried opening up
the spacing on the dots and dashes, but I still sound " like a beginner with
his first bug"!

I hooked it to a solid state code practice oscillator left over from my code
class teaching days. Had to because keying cathode keyed rigs like the AT-1
and DX-20 place some pretty potent Voltage on parts of the bug.

Any tips would be appreciated.

73,

Sam Neal N5AF
Re: OzarkCon

davemrtn
 

Thanks Nick.

K5DCM

On 4/5/2016 6:49 PM, 'Nick Kennedy' nick-wa5bdu@... [4sqrp] wrote:
 

I forgot to mention during my talk – yes, I’ll be putting the presentation and schematics and so on, on the web as soon as I clean ‘em up a little.  I’ll post here after it’s done.
 
73-
 
Nick, WA5BDU
 
 
Sent: Tuesday, April 05, 2016 6:31 PM
Subject: Re: [4sqrp] OzarkCon
 
Nick,
    Is it possible to get your presentation and schematics ?

K5DCM

On 4/5/2016 6:17 PM, 'Nick Kennedy' nick-wa5bdu@... [4sqrp] wrote:
 
Getting back to normal after another excellent OzarkCon.  Thanks to all the organizers. Good to see a lot of familiar faces and a few new ones.
 
On the way up, Jim N5IB and I stopped at the Buffalo River in Pruitt, AR on HWY 7 and tried a little NOPTA action. I managed just one QSO on 40 meters while Jim did maybe 15 or so on 20.  But it was a great spot to stop and set up the little rigs on picnic tables next to the river.
 
I enjoyed the presentations. They inspired me to try a few things and try harder at a few others.
 
I always enjoy the in-hotel QSO party and managed three total this year.  I’m thinking next year maybe a tiny homebrew rig dedicated just to that purpose. How hard could it be?
 
73-
 
Nick, WA5BDU

-- 
David Martin - K5DCM - Mountain Home, Ar.
-----------------------------------------

There is no Grief as great as denying the Truth until it is too late.

Truth is hate for those who hate the truth.




-- 
David Martin - K5DCM - Mountain Home, Ar.
-----------------------------------------

There is no Grief as great as denying the Truth until it is too late.

Truth is hate for those who hate the truth.

Re: OzarkCon

Nick-WA5BDU
 

I forgot to mention during my talk – yes, I’ll be putting the presentation and schematics and so on, on the web as soon as I clean ‘em up a little.  I’ll post here after it’s done.
 
73-
 
Nick, WA5BDU
 
 

Sent: Tuesday, April 05, 2016 6:31 PM
Subject: Re: [4sqrp] OzarkCon
 
Nick,
    Is it possible to get your presentation and schematics ?

K5DCM

On 4/5/2016 6:17 PM, 'Nick Kennedy' nick-wa5bdu@... [4sqrp] wrote:
 
Getting back to normal after another excellent OzarkCon.  Thanks to all the organizers. Good to see a lot of familiar faces and a few new ones.
 
On the way up, Jim N5IB and I stopped at the Buffalo River in Pruitt, AR on HWY 7 and tried a little NOPTA action. I managed just one QSO on 40 meters while Jim did maybe 15 or so on 20.  But it was a great spot to stop and set up the little rigs on picnic tables next to the river.
 
I enjoyed the presentations. They inspired me to try a few things and try harder at a few others.
 
I always enjoy the in-hotel QSO party and managed three total this year.  I’m thinking next year maybe a tiny homebrew rig dedicated just to that purpose. How hard could it be?
 
73-
 
Nick, WA5BDU

--
David Martin - K5DCM - Mountain Home, Ar.
-----------------------------------------

There is no Grief as great as denying the Truth until it is too late.

Truth is hate for those who hate the truth.

Re: OzarkCon

davemrtn
 

Nick,
    Is it possible to get your presentation and schematics ?

K5DCM

On 4/5/2016 6:17 PM, 'Nick Kennedy' nick-wa5bdu@... [4sqrp] wrote:
 

Getting back to normal after another excellent OzarkCon.  Thanks to all the organizers. Good to see a lot of familiar faces and a few new ones.
 
On the way up, Jim N5IB and I stopped at the Buffalo River in Pruitt, AR on HWY 7 and tried a little NOPTA action. I managed just one QSO on 40 meters while Jim did maybe 15 or so on 20.  But it was a great spot to stop and set up the little rigs on picnic tables next to the river.
 
I enjoyed the presentations. They inspired me to try a few things and try harder at a few others.
 
I always enjoy the in-hotel QSO party and managed three total this year.  I’m thinking next year maybe a tiny homebrew rig dedicated just to that purpose. How hard could it be?
 
73-
 
Nick, WA5BDU

-- 
David Martin - K5DCM - Mountain Home, Ar.
-----------------------------------------

There is no Grief as great as denying the Truth until it is too late.

Truth is hate for those who hate the truth.

OzarkCon

Nick-WA5BDU
 

Getting back to normal after another excellent OzarkCon.  Thanks to all the organizers. Good to see a lot of familiar faces and a few new ones.
 
On the way up, Jim N5IB and I stopped at the Buffalo River in Pruitt, AR on HWY 7 and tried a little NOPTA action. I managed just one QSO on 40 meters while Jim did maybe 15 or so on 20.  But it was a great spot to stop and set up the little rigs on picnic tables next to the river.
 
I enjoyed the presentations. They inspired me to try a few things and try harder at a few others.
 
I always enjoy the in-hotel QSO party and managed three total this year.  I’m thinking next year maybe a tiny homebrew rig dedicated just to that purpose. How hard could it be?
 
73-
 
Nick, WA5BDU
Re: Introduction

WA0ITP
 

Welcome aboard Scott.   Looking forward to working you QRP to QRP.    Being a Cardinal fan, you'll have many friends in the Group.
72 WAØITP
I love this radio stuff.
www.wa0itp.com
www.4sqrp.com
On 4/5/2016 10:58 AM, scott.dreher@... [4sqrp] wrote:

 

Hi everyone...I just wanted to drop a note to introduce myself to the group. I'm Scott, WZØW. I've been a ham for a little over two years, and have been learning CW since last fall. I just completed building a QRP transceiver for CW on 40m, and the QRP bug has bitten. I have yet to make a QSO on the hombrewed rig, but hopefully that will change soon!


I look forward to meeting you all on the air in the near future.


Scott

 
FS

pileupjunkie
 

Hi Gang,
I have for sale an SST with a built in keyer and speed control and the 2 buttons to set up your call or beacon.
Painted RED,WHITE & BLUE.
I never did do the mod for the extra 6 KC
Just to busy now with fishing,guitars and writing songs
$100.00 shipped
Postal money order only
Thank you
BOB AF2D
Re: Introduction

Scott Dreher <scott.dreher@...>
 

I built the project from the March issue of QST. It is based on a Forty-9er kit, modified to use an Arduino based VFO, so I can tune over the entire 40m band. I added a touch sensitive iambic keyer circuit.

When I get a few minutes to play on the radio, I'll post on the QRP spots page mentioned earlier and see how it does.

Scott WZØW


On Tue, Apr 5, 2016, 12:35 PM Johnny Matlock <jomatlock@...> wrote:
Welcome to our QRP GROUP Scott!
There is a lot of Hams here that love QRP, building and or operating.
If you want to try a sched check out QRP spots.
When you feel comfortable with cw, please join us on Wednesday night for the Nets.
72
Again thanks for joining up with us.
Johnny AC0BQ


On Tuesday, April 5, 2016, scott.dreher@... [4sqrp] <4sqrp@...> wrote:
 

Hi everyone...I just wanted to drop a note to introduce myself to the group. I'm Scott, WZØW. I've been a ham for a little over two years, and have been learning CW since last fall. I just completed building a QRP transceiver for CW on 40m, and the QRP bug has bitten. I have yet to make a QSO on the hombrewed rig, but hopefully that will change soon!


I look forward to meeting you all on the air in the near future.


Scott

 



--
QRP....."More smiles per Watt"
72
JOHNNY AC0BQ  ..
Re: Introduction

Johnny AC0BQ
 

Welcome to our QRP GROUP Scott!
There is a lot of Hams here that love QRP, building and or operating.
If you want to try a sched check out QRP spots.
When you feel comfortable with cw, please join us on Wednesday night for the Nets.
72
Again thanks for joining up with us.
Johnny AC0BQ


On Tuesday, April 5, 2016, scott.dreher@... [4sqrp] <4sqrp@...> wrote:
 

Hi everyone...I just wanted to drop a note to introduce myself to the group. I'm Scott, WZØW. I've been a ham for a little over two years, and have been learning CW since last fall. I just completed building a QRP transceiver for CW on 40m, and the QRP bug has bitten. I have yet to make a QSO on the hombrewed rig, but hopefully that will change soon!


I look forward to meeting you all on the air in the near future.


Scott

 



--
QRP....."More smiles per Watt"
72
JOHNNY AC0BQ  ..
Re: Introduction

Tim N9PUZ
 

On 4/5/2016 10:58 AM, scott.dreher@gmail.com [4sqrp] wrote:
Hi everyone...I just wanted to drop a note to introduce myself to the
group. I'm Scott, WZØW. I've been a ham for a little over two years, and
have been learning CW since last fall. I just completed building a QRP
transceiver for CW on 40m, and the QRP bug has bitten. I have yet to
make a QSO on the hombrewed rig, but hopefully that will change soon!
Welcome Scott!

What rig did you build? Is it rock bound on a single frequency?

Good to have you with us.

73,

Tim N9PUZ
Re: Introduction

Paul Smith
 

You might scare up a QSO by spotting on QRP SPOTS or post here. Speed does not matter to most of us. Ill listen for you.
de Paul N0NBD

________________________________

To: 4sqrp@yahoogroups.com
From: 4sqrp@yahoogroups.com
Date: Tue, 5 Apr 2016 08:58:50 -0700
Subject: [4sqrp] Introduction



Hi everyone...I just wanted to drop a note to introduce myself to the
group. I'm Scott, WZØW. I've been a ham for a little over two years,
and have been learning CW since last fall. I just completed building a
QRP transceiver for CW on 40m, and the QRP bug has bitten. I have yet
to make a QSO on the hombrewed rig, but hopefully that will change
soon!


I look forward to meeting you all on the air in the near future.


Scott
Introduction

scott.dreher@...
 

Hi everyone...I just wanted to drop a note to introduce myself to the group. I'm Scott, WZØW. I've been a ham for a little over two years, and have been learning CW since last fall. I just completed building a QRP transceiver for CW on 40m, and the QRP bug has bitten. I have yet to make a QSO on the hombrewed rig, but hopefully that will change soon!


I look forward to meeting you all on the air in the near future.


Scott

 
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