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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
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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
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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
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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
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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
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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
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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 ..
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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 ..
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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: Where: Organizer: Description:
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Wednesday Evening 40 and 80 meter Nets - Wed, 04/24/2019 8:00pm-9:00pm
#cal-reminder
main@4SQRP.groups.io Calendar <main@...>
Reminder: When: Where: Organizer: Description:
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Wednesday Evening 40 and 80 meter Nets - Wed, 04/24/2019 8:00pm-9:00pm
#cal-reminder
main@4SQRP.groups.io Calendar <main@...>
Reminder: When: Where: Organizer: Description:
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Wednesday Evening 40 and 80 meter Nets - Wed, 04/24/2019 8:00pm-9:00pm
#cal-reminder
main@4SQRP.groups.io Calendar <main@...>
Reminder: When: Where: Organizer: Description:
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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
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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
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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-)
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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
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Re: MOSFET PA RF Choke?
nm0s_qrp <ai9e_qrp@...>
Whose design is this? Is there documentation anywhere that others could see?
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Re: Magic box build, no sidetone
On 4/22/2019 5:03 AM, Jim Kortge wrote:
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.
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Re: Magic box build, no sidetone
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.
72/73, Jim, K8IQY - The MagicBox Designer
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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?
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