Date   

FS QRP

George H. Gates
 

40 meter Universal one watter. Built in PC switch case. Digital read out. $45 shipped.
40 meter Rockmite II Built i PC switch case. Has tuneable audio filter added. Crystal sockets on back. $45 shipped
norcal FCC-1 frequency counter. Built in PC switch box. $40 shipped
Crystal checker. Built from kit in clear plastic case. Powered from usb.  $15 shipped. 
80 meter cricket 80a 2017. No case. $20 shipped
TNX George/W2BPI


FOXTRAVAGANZA!! Tonight!!

Dale Putnam
 



The FOXTRAVAGANZA happens Thursday evening, on 40 & 80, at 7pm MT, for the fastest 90 minutes in radio,
exchange. All the FOXES for the season, will be calling "CQ FOX"  and all the HOUNDS.. (that's everyone else) will
be answering or shooting at the FOXES.

- Signal Report
- QTH
- Operator's Name, and
- Power Output
Examples: 559 CO ET 1W
                579 NM DOC 5W

Then, after it is all over, and we are licking our wounds. We need to post our results, to the qfox reflector.
It's the celebration of a successful Winter Season. The results of that can be seen on http://qrpfoxhunt.org/
QRP Fox Hunt Home Page<http://qrpfoxhunt.org/>
A QRP Fox Hunt is a series of 90 minute Amateur Radio events during which low-power (QRP) stations, or "Hounds," attempt to make contact with specific QRP stations designated as "The Fox."
qrpfoxhunt.org


Remember.. only 5 watts. 2 bands. 90 minutes.
and the whole thing is about propagation study.
check out the maps for the season. Tells the tale of props!!!
http://www.k4oaq.com/fox/foxSignUp.php

or find us on FB.


Good Luck

WC7S WY Lee 5w


Re: 40m Net

w2sh@...
 

Bill ran a heavily populated 4SQRP net that lasted 50 minutes.  I joined it during
WA9PWP's QSO.  Staying with it to the end meant finding the 80m net had finished.

Here's how sigs were in northern NJ

WA9PWP     Paul       WI               579
N4DR           Marc      MD              589
K4VIG          Gary      TN               589
K3NLT         Russ      VA               589
WB5OJJ      Al           TX               579
K4KRW       Richard   NC             579/589
WA0ITP      Terry       IA                579
W2SH         Chas       NJ               Received 549
KK4ITX        John       FL               449
KV6Z           Bill          OK (NCS)   579

Tentec 539 (Argo 6) with inverted L up 86' & out 68'.

72,

Charles (aka Chas),  W2SH


From: main@4SQRP.groups.io <main@4SQRP.groups.io> on behalf of dekle <dekle@...>
Sent: Wednesday, April 24, 2019 22:09
To: main@4SQRP.groups.io
Subject: [4SQRP] 40m Net
 
Great one tonight!!!
QNIs were:

WA9PWP     Paul       WI
N4DR           Marc      MD
K4VIG          Gary      TN
K3NLT         Russ      VA
WB5OJJ      Al           TX
K4KRW       Richard     NC
WA0ITP      Terry       IA
W2SH         Chas       NJ
KK4ITX        John       FL
KV6Z           Bill          OK (NCS)

I think I got everyone who tried.
Thanks all - that was fun.
C U next week.

73
Bill
KV6Z


Tonight's DMR net

Robert
 

Great Net, Great Topic (tnx to Terry WA0ITP)

TONIGHT'S CHECK INS

WA0ITP TERRY

W4RK BILL

WG5F ED

NK8O CHARLES

N0SO MIKE

K0BOG CHUCK

N0MPM MIKE

W4DNQ RON

AC0BQ JOHNNY

AB0AH LARRY

THANKS TO ALL OF TONIGHT'S PARTICIPANTS


73'S FROM OUT IN THE STICKS

BERT

N0YJ


ARRL Rocky Mountain Division Conference

AG1P Ron
 

I have been in contact with the coordinator of the Utah Hamfest who is sponsoring the 2019 ARRL Rocky Mountain Division conference August 8th thru 10th in Ogden Utah. https://rmdc2019.org/  Marvin KA7TPH is asking us if any of our members will be attending the event.  He is also looking for someone to give a QRP presentation as part of the conference.  This would be good way to promote our aspect of the hobby to the QRO community. 

 

If planning to attend or wish to give a presentation, please contact me off list at my call at earthlink dot net.

 

72 - Ron - AG1P

4SQRP Volunteer Corporate Secretary

4SQRP Volunteer Webmaster

 

 


40m Net

dekle <dekle@...>
 

Great one tonight!!!
QNIs were:

WA9PWP     Paul       WI
N4DR           Marc      MD
K4VIG          Gary      TN
K3NLT         Russ      VA
WB5OJJ      Al           TX
K4KRW       Richard     NC
WA0ITP      Terry       IA
W2SH         Chas       NJ
KK4ITX        John       FL
KV6Z           Bill          OK (NCS)

I think I got everyone who tried.
Thanks all - that was fun.
C U next week.

73
Bill
KV6Z


Re: 80 Meter Net Report

Paul Smith
 

Cool net Johnny,
This is the first one I have been able to hear for a while. 72
Paul

Sent from Outlook


From: main@4SQRP.groups.io <main@4SQRP.groups.io> on behalf of Johnny Matlock <jomatlock@...>
Sent: Thursday, April 25, 2019 1:51 AM
To: 4SQRP@groups.io
Subject: [4SQRP] 80 Meter Net Report
 
ge Group
Nice net Tonight on 80 Meters:
Check in's were:

N0NBD PAUL
K3NLT RUSS
KL7IXI MIKE
AND
WA0ITP TERRY.

FYI
I listened to the 40 meter net for a while and Bill was sacking them up!
I could almost hear him on his peaks.

CU all next week, if the T storms stay away!
72
Johnny AC0BQ

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




80 Meter Net Report

Johnny AC0BQ
 

ge Group
Nice net Tonight on 80 Meters:
Check in's were:

N0NBD PAUL
K3NLT RUSS
KL7IXI MIKE
AND
WA0ITP TERRY.

FYI
I listened to the 40 meter net for a while and Bill was sacking them up!
I could almost hear him on his peaks.

CU all next week, if the T storms stay away!
72
Johnny AC0BQ

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


Wednesday Evening 40 and 80 meter Nets - Wed, 04/24/2019 #cal-notice

main@4SQRP.groups.io Calendar <noreply@...>
 

Wednesday Evening 40 and 80 meter Nets

When:
Wednesday, 24 April 2019
8:00pm to 9:00pm
(GMT-05:00) America/Chicago

Where:
40 and 80 Meters

Organizer:
jomatlock@...

Description:
The 40 Meter Net will be at 8:00 pm central time  on 7.122 +-. QRM
NCS will be Bill KV6Z.

Wednesday evening 80 Meter CW Net. will be at  (8:30PM Central Time Wednesday). 
The 80 meter net will be called on 3.564 MHz +/- QRM.
Net control operators are Johnny AC0BQ or Paul N0NBD.

* NEW *  Wednesday evening DMR Voice Net will be at (Thursday) 0300 UTC (9:00PM Central Time Wednesday/)
Four States QRP has a Brandmeister DMR Talk Group (TG31654). Join us to discuss QRP, ask questions, or just ragchew. The Wednesday net is a directed net  but any other time you may use the Talk Group to chat with other QRPers.
Net Control operator is Bert NØYJ.


Wednesday Evening 40 and 80 meter Nets - Wed, 04/24/2019 8:00pm-9:00pm #cal-reminder

main@4SQRP.groups.io Calendar <main@...>
 

Reminder:
Wednesday Evening 40 and 80 meter Nets

When:
Wednesday, 24 April 2019
8:00pm to 9:00pm
(GMT-05:00) America/Chicago

Where:
40 and 80 Meters

Organizer:
jomatlock@...

Description:
The 40 Meter Net will be at 8:00 pm central time  on 7.122 +-. QRM
NCS will be Bill KV6Z.

Wednesday evening 80 Meter CW Net. will be at  (8:30PM Central Time Wednesday). 
The 80 meter net will be called on 3.564 MHz +/- QRM.
Net control operators are Johnny AC0BQ or Paul N0NBD.

* NEW *  Wednesday evening DMR Voice Net will be at (Thursday) 0300 UTC (9:00PM Central Time Wednesday/)
Four States QRP has a Brandmeister DMR Talk Group (TG31654). Join us to discuss QRP, ask questions, or just ragchew. The Wednesday net is a directed net  but any other time you may use the Talk Group to chat with other QRPers.
Net Control operator is Bert NØYJ.

View Event


Wednesday Evening 40 and 80 meter Nets - Wed, 04/24/2019 8:00pm-9:00pm #cal-reminder

main@4SQRP.groups.io Calendar <main@...>
 

Reminder:
Wednesday Evening 40 and 80 meter Nets

When:
Wednesday, 24 April 2019
8:00pm to 9:00pm
(GMT-05:00) America/Chicago

Where:
40 and 80 Meters

Organizer:
jomatlock@...

Description:
The 40 Meter Net will be at 8:00 pm central time  on 7.122 +-. QRM
NCS will be Bill KV6Z.

Wednesday evening 80 Meter CW Net. will be at  (8:30PM Central Time Wednesday). 
The 80 meter net will be called on 3.564 MHz +/- QRM.
Net control operators are Johnny AC0BQ or Paul N0NBD.

* NEW *  Wednesday evening DMR Voice Net will be at (Thursday) 0300 UTC (9:00PM Central Time Wednesday/)
Four States QRP has a Brandmeister DMR Talk Group (TG31654). Join us to discuss QRP, ask questions, or just ragchew. The Wednesday net is a directed net  but any other time you may use the Talk Group to chat with other QRPers.
Net Control operator is Bert NØYJ.

View Event


Wednesday Evening 40 and 80 meter Nets - Wed, 04/24/2019 8:00pm-9:00pm #cal-reminder

main@4SQRP.groups.io Calendar <main@...>
 

Reminder:
Wednesday Evening 40 and 80 meter Nets

When:
Wednesday, 24 April 2019
8:00pm to 9:00pm
(GMT-05:00) America/Chicago

Where:
40 and 80 Meters

Organizer:
jomatlock@...

Description:
The 40 Meter Net will be at 8:00 pm central time  on 7.122 +-. QRM
NCS will be Bill KV6Z.

Wednesday evening 80 Meter CW Net. will be at  (8:30PM Central Time Wednesday). 
The 80 meter net will be called on 3.564 MHz +/- QRM.
Net control operators are Johnny AC0BQ or Paul N0NBD.

* NEW *  Wednesday evening DMR Voice Net will be at (Thursday) 0300 UTC (9:00PM Central Time Wednesday/)
Four States QRP has a Brandmeister DMR Talk Group (TG31654). Join us to discuss QRP, ask questions, or just ragchew. The Wednesday net is a directed net  but any other time you may use the Talk Group to chat with other QRPers.
Net Control operator is Bert NØYJ.

View Event


Re: K1 For Sale

Dale Holloway, K4EQ
 

Forgot to add that the K1 is a 4-bander: 40, 30, 20, 17 meters.
--
Dale Holloway, K4EQ
www.k4eq.net


K1 For Sale

Dale Holloway, K4EQ
 

I just bought an Elecraft KX2 (I'm awed!) and have decided to put my beloved K1 (SN 3161) up for sale. It has the noise blanker, automatic antenna tuner, internal battery adapter, and tilt stand. Also included is the K1BKLT LCD back light modification kit, which I never installed. I built this in September 2012 and it is in impeccable condition cosmetically and operationally. $395 plus shipping via PayPal. Go to www.k4eq.net and click on "For Sale" for pictures. Email information is also available on the site.
--
Dale Holloway, K4EQ
www.k4eq.net


Re: KiCad Tutorial

WØIY <barry.w0iy@...>
 

Look for the DigiKey videos. Shawn does a good job on those. If the date of the video is more than a year old, it  may not be accurate. The biggest change from V4 to V5 (5.1 is the latest release) is in the Libraries all moved to a different file location and names. If you have never installed V4, then a new clean install of V5 should just work with the Libs in the correct place.

Most other topics should be similar from V4 to V5.

Rumor has it there was a perfect CAD tool, but it died a long time ago in a galaxy far far away when the Empire destroyed its planet.  A single SD card may have survived. (8-)


Re: MOSFET PA RF Choke?

nm0s_qrp <ai9e_qrp@...>
 

It is difficult to speak intelligently on this design without seeing a schematic, but it is not at all unusual to have a low-inductance choke between the drain of the PA MOSFET and the supply, _if_ it is resonated against a parallel capacitor at the operating frequency to create a high impedance at the drain.  This capacitance may exist in parallel to the drain-source of the MOSFET, and have a return through a larger RF decoupling capacitor in parallel with the supply voltage.  The low value choke may let RF current pass, but as long as it is a high Q circuit, there is no RF power being dissipated.

73 Dave NM0S


Re: MOSFET PA RF Choke?

nm0s_qrp <ai9e_qrp@...>
 

Whose design is this?  Is there documentation anywhere that others could see?


Re: Magic box build, no sidetone

Jim Kortge
 

On 4/22/2019 5:03 AM, Jim Kortge wrote:

On 4/21/2019 4:28 PM, Kenneth Ketner via Groups.Io wrote:
Greetings folks.
Hello Ken,


Finally getting around to building Magic Box.
That kit is getting long in the tooth!  :-)


Can’t get a side tone at the side tone test step.
Can you send along a photo of the PCB as it currently is built, top and bottom sides so I can have a look at what you've done so far?

Can you verify that there are 2N3804 transistors at locations Q14 and Q15 and a 2N7000 at location Q16?
Sorry, 2N3904 transistors at Q14 and Q15; hands don't seem to be working at 5 AM this morning.


Replaced R46 from 10meg to 100 ohm.
That change has nothing to do with the side tone generation.
Prior tests ok.
What were your voltage readings in those tests?


Is this a known problem?
No, not at all.


Suggestions?
Send photos and answer questions and I'll try to help you.



73, Ken Ketner ka5eld

72/73,

Jim, K8IQY - The MagicBox Designer



Re: Magic box build, no sidetone

Jim Kortge
 

On 4/21/2019 4:28 PM, Kenneth Ketner via Groups.Io wrote:
Greetings folks.
Hello Ken,


Finally getting around to building Magic Box.
That kit is getting long in the tooth!  :-)


Can’t get a side tone at the side tone test step.
Can you send along a photo of the PCB as it currently is built, top and bottom sides so I can have a look at what you've done so far?

Can you verify that there are 2N3804 transistors at locations Q14 and Q15 and a 2N7000 at location Q16?


Replaced R46 from 10meg to 100 ohm.
That change has nothing to do with the side tone generation.
Prior tests ok.
What were your voltage readings in those tests?


Is this a known problem?
No, not at all.


Suggestions?
Send photos and answer questions and I'll try to help you.



73, Ken Ketner ka5eld

72/73,

Jim, K8IQY - The MagicBox Designer


Re: MOSFET PA RF Choke?

Leland L. Bahr
 

Yes, I agree with everything you said.  I also don't understand how 25 ohms could choke out RF from feeding back into the power supply. 

Lee

On 4/21/2019 5:20 PM, Curt via Groups.Io wrote:
Studying a 5 watt 40M Transmitter that uses an IRF510 for PA, what is puzzling is the RF choke is specified as a T68-2 with 10 turns.  By my calculations this presents an impedance at 7 MHz of about 20 ohms, which seems way less than the 30 times output impedance rule.  Am familiar with 10 turns on an FT37-43 which presents an impedance of about 1500 ohms, have encountered other IRF510 PAs that used that type choke.  How can the low impedance choke keep RF from leaking out of the output circuit to the power supply?

The same circuit uses a 2N3053 as a driver, the collector being coupled to the PA via a transformer that uses an FT37-43 with 14 turn primary ( 3000 ohms @ 7 MHz ) and a 4 turn secondary ( 246 ohms ). 

I am suspecting that the core types have been transposed.  If so, then the choke would be 1500 ohms and the transformer would be 49 ohm primary with a 4 ohm secondary.  These seem more what should expect?

Comments?

Curt KB5JO