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US supplied Vietnam Village VHF handheld QRP radios....
Jerry Brown
Gang, Recollections after a visit to the Fair Radio website today! From my time living in El Paso, TX (Ft Bliss); I was active duty and training in internal medicine at the Army hospital there. Hams friends there got their first solar powered repeater up and running....at 7,200 feet+, on North Mt Franklin! A Texas Air National Guard Chinook took the concrete enclosure for the repeater to the peak for them. Check out the QST (cover) article on this repeater written by Roy Gould, N5RG, that was published in Jan 78 QST (you may have to be an ARRL member to get this article)..... The village VHF radios my roommate Steve Guerra WB5LCN used for building the repeater RX/TX modules are now being sold at Fair Radio. The Hallicrafters plant in El Paso that made these radios closed in 1974. 73, Jerry N4EO, ex-WA4GKO, ex-YI9EO, ex-HL9EO Ret'd US Army
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Re: QRP Banner
toggle quoted messageShow quoted text
On Sat, Sep 26, 2020 at 11:46 AM griffithsesq.robert via groups.io <signalnaut=aol.com@groups.io> wrote: Is there a direct email address for proposed Banner articles? --
Check out the 4SQRP website at 4sqrp.com
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Re: Keying interface for PC
Thanks Jim I appreciate you digging into this. I am trying to key my Kx3 for the upcoming NAQACC N3A event. I was thinking that it required two port connections, but I couldn’t figure out how to do that? The little interface would still be a great asset on a simpler QRP rig. Thanks again 73 Johnny ACØBQ
On Sat, Sep 26, 2020 at 11:48 AM n5ib_2 <n5ib@...> wrote: Update: it's amazing what you can learn just by "doing your homework" :^)) --
Check out the 4SQRP website at 4sqrp.com
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Re: Keying interface for PC
Jim, N5IB
Update: it's amazing what you can learn just by "doing your homework" :^))
Scott (N3FJP) has in fact already implemented an "almost as good" feature for sending CW over the CAT connection to the Elecraft rigs (and others that support a similar feature, like the Icom 7600 and 7610) In the CW transmit settings, if the function key stored messages are prefixed with "RI:" then the characters that follow will be sent over the active CAT link as command(s) rather than used as text to key the transmitter over a separate keying link. See the Elecraft KIO2 programmer's reference, page 9: <https://ftp.elecraft.com/K2/Manuals%20Downloads/KIO2%20Pgmrs%20Ref%20rev%20E.pdf> and N3FJP's CW transmit settings instructions (quoted below): "..... With version 1.1, I have added the ability to play saved CW strings stored in your rig (for rigs equipped with this feature). To send a command to your rig instead of sending the string, precede the text with RI:. For example, when placed in an F key string, the following will trigger the Icom 7300 and Icom 7610 internally recorded voice messages: (you must have rig interface enabled and be connected by a com port)......" For example, if the F4 key is loaded with "RI:SW16;SW08;" then pressing the F4 key will send the message stored in the K2's message memory #1. the SW16; simulates a tap of the MSG button, and the SW08; simulates tapping the "1" button. In like manner... "RI:SW16;SW09;" sends memory #2, "RI:SW16;SW10;" sends #3 and so on. So in one swell foop [sic] I've almost obsoleted my wired USB keying interface LOL and designated the wireless BlueTooth CAT link as a the keying interface. What is lost in the scheme is the ability to auto-insert callsigns, serial numbers, etc into a stored message. So Scott still owes us some midnight oil... Break's Over, Scott!! LOL Jim, N5IB
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QRP Banner
griffithsesq.robert
Is there a direct email address for proposed Banner articles?
Griff NE3I Robert Alan Griffiths
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Re: Keying interface for PC
Jim, N5IB
I should append a note about using the keying interface with rigs other than the K2...
The 4N25 optoisolator's output transistor is rated at 70 volts C-E breakdown and 50 mA continuous collector current. So the voltage won't be an issue with any solid state rig (tube rig ops beware!), but the current and saturation voltage might be, as Terry had noted. The K2 draws less than a mA on key-down and has enough voltage margin to accommodate the C-E voltage of the opto plus the diodes used for the "straight-key-sensing" circuit. Other rigs might sink considerably more current through the key, or require a "harder" ground condition. For instance, a Bayou Jumper passes the full Tx current, about 700 mA, through the key, so no way the little opto could handle that. To test, use your DMM as an ammeter across the rig's key line to measure the "short circuit current." If less than 30 mA or so then no worries. Worst case - you might have to add a more robust keying transistor stage at the output to handle an beefier keying circuit, or if the opto doesn't pull the line close enough to ground. I'll make a test with my IC-706 and TS-430S and report back, though I seem to recall using a similar opto isolator with the 706 a few years back with no issues. I wish I could find a serial BlueTooth module that managed the modem control lines properly, but the ones I've tried, even those with a pinout for RTS, DTR, etc, didn't seem to control them. I gently prodded N3FJP a couple years back to add program support for Elecraft rigs' ability to send CW via a command over the CAT link, but to date he hasn't had occasion to implement it. Perhaps a "re-prod" is in order :^)) If that feature were included, then my little wireless BlueTooth CAT adapter: <https://qsl.net/n5ib/Elecraft%20K2%20Bluetooth%20Interface%20Overview.pdf> would handle rig control and CW keying over the same link. Jim, N5IB
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Re: Keying interface for PC
Gm Jim I have to agree with Wayne. Great Job! I have been trying to figure out how to key my radio with the N3FJP software. Now I need to get busy and build one!! Thanks 73 Johnny ACØBQ
On Fri, Sep 25, 2020 at 10:49 AM n5ib_2 <n5ib@...> wrote: A few days ago I was reading Terry's (WA0ITP) description of a keying interface he made in order to use N3FJP contest and general logging software to send CW . His interface connected to a PC's printer port. --
Check out the 4SQRP website at 4sqrp.com
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Re: Keying interface for PC
Wayne Dillon
Seriously nice job Jim, thanks muchly for sharing. Wayne - NQ0RP QRP - EFFICIENCY AND SKILL, NOT POWER.
God Bless from Wayne Dillon - NQ0RP Fate whispered to courageous "You cannot withstand the storm" Courageous whispered back "I am the storm"
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Keying interface for PC
Jim, N5IB
A few days ago I was reading Terry's (WA0ITP) description of a keying interface he made in order to use N3FJP contest and general logging software to send CW . His interface connected to a PC's printer port.
<http://www.wa0itp.com/cwinterface.html> With the demise of real serial ports and printer port on laptops, I decided to make an interface using a USB to serial adapter module that I had on hand. As long as it brought out the needed modem control lines (RTS in this case) it ought to work. I made a quick toner transfer PC board, and exercised my recently acquired 3D printer to make an enclosure. Attached is a PDF document of the project. It works fine - and just in time to get ready for November Sweepstakes. Additional support information can be found at <https://qsl.net/n5ib/> 73, Jim, N5IB
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Delta Mike Romeo Net
Robert
Thanks to those who checked in tonight WG5F ED AC0BQ JOHNNY N0TGR DICK N4ELM DAVE WA9BNZ BILL TONIGHT'S TOPIC BEACONS 73'S bERT N0YJ
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40 and 80 meter net report
Ge Group Well, I am still waiting on Cycle 25 to begin, but I'm not sure it has started yet? Check in's tonight were 40 Meters KW4JS JOHN WA9PWP PAUL N4ELM DAVE WI5H MIKE 80 METER CHECK IN'S WERE: N4ELM DAVE DOUBLE WA9PWP PAUL DOUBLE WA0ITP TERRY N0YJ BERT Thanks all, have a great week, enjoy the fall WX! 72 Johnny AC0BQ
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Wednesday Evening 40 and 80 meter Nets - Wed, 09/23/2020
#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, 09/23/2020 20:00-21:00
#cal-reminder
main@4SQRP.groups.io Calendar <main@...>
Reminder: Wednesday Evening 40 and 80 meter Nets When: Wednesday, 23 September 2020, 20:00 to 21:00, (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
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Wednesday Evening 40 and 80 meter Nets - Wed, 09/23/2020 20:00-21:00
#cal-reminder
main@4SQRP.groups.io Calendar <main@...>
Reminder: Wednesday Evening 40 and 80 meter Nets When: Wednesday, 23 September 2020, 20:00 to 21:00, (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
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Wednesday Evening 40 and 80 meter Nets - Wed, 09/23/2020 20:00-21:00
#cal-reminder
main@4SQRP.groups.io Calendar <main@...>
Reminder: Wednesday Evening 40 and 80 meter Nets When: Wednesday, 23 September 2020, 20:00 to 21:00, (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
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Question Related to My NS40 Transmitter
Bobby Drummond
If I add a 12 or 15 volt regulator in series with the 2N7000 oscillator transistor (to keep the voltage on it lower than the final's new voltage) and supply 24 volts to the IR510 circuit, will it handle the extra voltage? I assume it might need a better heat sink if so. I would also insert a DC switching circuit in series with the power to the transmitter so I would only be switching low voltage and low current DC voltage to effect the same thing as direct key switching. What would be the approximate power output from the transmitter be in that case? 73 de AK4JA
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Re: For Sale Ten-Tec 4020 CW transceiver
Bill VanKirk
The TenTec 4020 has been spoken for. Thanks to all that emailed about it.
73 Bill W0PT
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Re: For Sale Ten-Tec 4020 CW transceiver
Matt Jodz
Hi Bill, Sounds good. What is it shipped and do you take PayPal? 73 de Matt ND7MJ Ps pics would be Great but not necessary.
On Sun, Sep 20, 2020 at 4:49 PM Bill VanKirk <bvkirk@...> wrote: I have a Ten-Tec 4020 CW transceiver for sale in good condition. Makes 5 watts on both 40 and 20 meters. Works great and is a lot of fun to use when out and about. Has built in keyer, etc. Google for further details. I have a box full of QRP gear so this one needs a new home. Asking $85. Pictures available. Email me direct for details.
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For Sale Ten-Tec 4020 CW transceiver
Bill VanKirk
I have a Ten-Tec 4020 CW transceiver for sale in good condition. Makes 5 watts on both 40 and 20 meters. Works great and is a lot of fun to use when out and about. Has built in keyer, etc. Google for further details. I have a box full of QRP gear so this one needs a new home. Asking $85. Pictures available. Email me direct for details.
73 W0PT
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2020 NJQRP Skeeter Hunt Soapbox has been published
You can see all the comments of your fellow Skeeter Hunters! You can go to the Official NJQRP Skeeter Hunt Webpage and scroll to the bottom for the links. Or ... Soapbox Page 1 is here https://www.qsl.net/w2lj/index%20page%2016 Soapbox Page 2 is here https://www.qsl.net/w2lj/index%20page%2017 Soapbox Page 3 is here https://www.qsl.net/w2lj/index%20page%2018 Once again, thanks to all of you out there who participated and continue to participate from year to year. YOU make the NJQRP Skeeter Hunt the success that it is. Without you, it would be four hours of dead air. Certificates will be mailed in October 72 de Larry W2LJ
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