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Re: Another QMX+ became SSB capable
Errick,
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I will need to draw something up. I used some covered 4 lead salvaged from a non working USB cable. Basically just followed the ICOM 8 pin pinouts for the IC-7300/HM-219 and attached the mic and PTT grounds to the 3,5 mm stereo ground (shaft), the mic+ to the ring, and PTT+ to the tip.
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For the headset, I used a 3,5mm in-line socket for the mic ground (shaft contact) and mic+ to the tip contact. I nipped off the ring contact to get it out of the way and reduce the chance for a short when I reassembled the socket cover. I did some adhesive shrink tubing for cosmetics and extra strain relief. ?I used a 1/4” phone jack for the PTT line so I could use a foot pedal or aircraft strap on PTT switch. Nothing elegant there. The headset phone lead just plugs in to the phone jack on the front panel.
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For the HM-219 microphone, I used an in-line 8pin male connector and just connected the appropriate pins to get the mic and PTT function from the HM-219 to the QMX+ mic/key socket as described in the first paragraph.
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Hope that helps.
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--
Jack
KD4IZ
FM19OO |
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Re: Tariffs?
To me FedEx is a bigger worry than Tariffs. I placed a parts order with QRP-Labs (value of $32.96 CAN) and 3 weeks later I received an invoice from FedEx. FedEx collected $3.93 in Canadian sales taxes and for the honour of doing that they charged me an additional $11.40 AND $0.57 more in sales tax!
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So the collection of $3.93 in taxes cost me a total of $15.90!
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I love the rapid and secure service FedEx provides but this is highway robbery!
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73, Rick VE7TK Website: |
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Re: QMX(+) Build experience, Poor Audio Filter Sweep/RF Filter Sweep/Image Sweep/ADC IQ test and resolution with new PCM1804
Don't know ... will repeat that test to see and get back...
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Did a voltage check today while band switching and approx 2.5 vdc moved from C401 to C404 when bands 160 m through 6 m. VCC and VDD were nominally 5.0 and 3.3 respectively.
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Have awakened to all the handy test points scattered about!
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73 Karl KI4ZUQ |
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CW Practice / Rag Chew
开云体育On
4/04/25 I had a CW practice / rag chew session on 20
meters. I worked two stations and had long chats with
them:
Conditions were OK.
SSN = 124, SFI = 178, A = 26, K = 4.
My next CW practice session will be April 07 at 09:00 EDT / 13:00 UTC on 20 meters.?Anyone and everyone is welcome. This practice is intended for operators who are new to CW or they need some practice. IT DOES NOT MATTER HOW POOR YOUR CW IS. Mistakes are OK. Poor fists are OK. Slow speed is OK. Really slow speed is OK. This practice is meant for you to improve your CW. I will do my best to adjust to your skill level. Operate at any power level. If several stations show up, I will operate as a round-table control station. I will do it as a round-table so everyone gets a chance to transmit. Please listen to my directions. Details: Date
- April 07 2025
Time - 09:00 EDT ?13:00 UTC Band - 20 Meters How to find me - I will find a clear frequency and call CQ. Go to the Reverse Beacon Network and search for my call sign AB8DF. That will tell
you what frequency I am on. Tune your station to that
frequency and if you hear me give me a call. If there
is a QSO in progress, please wait for a break in the
action. Then send your callsign. If I hear you, I will
invite you to join the QSO and start a round-table
QSO.
Reply to this email if you have questions. IT DOES NOT MATTER HOW POOR CW IS Ed AB8DF_._,_._,_ |
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Message from Jack W8TEE about T41 book
(For some reason Jack has a problem accessing this group) ======================== All: Al and I have just updated the 3rd edition T41 book. We moved the calibration info from Appendix C to its own chapter (20). The expanded instructions and new software make T41 calibration much easier. We have also updated the narrative in numerous places and have concentrated discussions on the V12.6 release where those changes are important. Some of you are asking yourself: Do I need to buy this update. Truthfully, if you already own the 3rd edition, we would say no. Most of the important changes are discussed on the web site and photos and schematics are available there, too. On the other hand, this is the last change we will be making to this book. Al and I have been at this for almost 7 years now and we're getting a little burned out. For that reason, we are turning this site over to Oliver King, KI3P, and Dr. Bill Schmidt, K9HZ. Al and I will continue to be active relative to the T41, but will leave the details to Oliver and Bill. If you do want the final version of the book, its new cover looks like this: The book is actually available now, but
the Amazon ad will not reflect the new cover for about 10 more days.
(If you order now, it will be the new version.) If you are attending
the FDIM conference this May (coincides with Dayton Hamvention and
the conference hotel is about 10 miles away), Al and I will be
selling autographed copies on Thursday night (May 15th) at
the conference hotel starting around 8PM. We have reduced the price
of the autographed copies from $12,500 to $40...which is a deal and
less than the Amazon price! If you have a previous copy of the book,
bring it along and we will be happy to sign it.
This has been a fun project and we want to thanks the hundreds of people have contributed to its improvement over time. We hope that continues long after Al and I are gone.
72, Jack Purdum, W8TEE Al Peter, AC8GY |
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jjpurdum
Jack Spitznagel (KD4IZ)
Rick Williams - VE7TK
Donald S Brant Jr
Karl
va3rr