Re: ProgRock2 programming??
Thanks so much Alan! I’ll give that a try.
73 Tom N5AMA
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On Mar 31, 2025, at 8:56?AM, Alan G4ZFQ via groups.io <alan4alan@...> wrote:
?On 31/03/2025 13:01, Tom Smith via groups.io wrote:
The online instructions appear to be using a Linux app that I can’t find on my Windows computer. Tom,
The Windows version
is identical except that you enter a COM port number seen in Device Manager when you plug in the Progrock..
The instructions in the manual should be enough, or ask for any obscure detail.
73 Alan G4ZFQ
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Re: #qmx #SSB Firmware beta 1_01_003 release
#qmx
#ssb
Mel,
Yep, my audio is poor also. Since calibration never completes, I turned off the predistortion. The audio is really poor if you turn off mic agc, then it is just loud noise transmitted. With agc, when you talk the noise is suppressed. I have not done much experimenting with compression and EQ as reported. My recollection is that with CESSB, you don't want to use compression.
Gary
W9TD
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Re: Max Voltage for QMX 9V
On 31/03/2025 12:40, John AE5X via groups.io wrote: Most of the noise produced by these converters is below 5 MHz John, Thanks, I'd often wondered about all the recommendations for these devices. I was tempted to try them but I will not be using them, LF is of interest here. 73 Alan G4ZFQ
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Re: Max Voltage for QMX 9V
Sepehr
?
The answer is 9V.? There is a little latitude maybe 10%.
?
The issue is higher voltages run higher power with the finals
and will increase current to the potential failure point.
So the BS170s would likely be more prone to fail.
?
The rest of the radio due to the power conversion scheme is?
not impacted by voltage changes.? I just self adjusts.
?
Best approach is to use a good (electrically quiet) buck converter
to drop any voltage supplied to 9V.
?
--
Allison
------------------
Post online only,?
direct email will go to a bit bucket.
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Re: ProgRock2 programming??
On 31/03/2025 13:01, Tom Smith via groups.io wrote: The online instructions appear to be using a Linux app that I can’t find on my Windows computer. Tom, The Windows version is identical except that you enter a COM port number seen in Device Manager when you plug in the Progrock.. The instructions in the manual should be enough, or ask for any obscure detail. 73 Alan G4ZFQ
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Re: Max Voltage for QMX 9V
Wlado,
?
I agree with John’s analysis. ?This is supported with my personal experience with the two devices I listed. ?Granted that I live in a high arm environment around Chicago. Ther may be some birdies in a quiet location. I have not tested there.?
Also note that there are a number of high power shack supplies that are switchers. ?All three that I use are.?
For the relatively low cost, and the fact that you can return the device to Amazon, it would be worth trying.?
73
Evan
AC9TU
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I am a newbie and have purchased three of the ProgRock2 units and planned to use them as crystal substitutes for some HC6/U crystals I’m unable to obtain (without waiting a long time for these to be built). Frequencies between 8 and 20 mhz are needed for a WWV receiver I’m restoring.
I’ve gone to the QRPLabs site for instructions but unable to follow what I need to do. I’m using a Windows 10 desktop computer and have the USB cable with the proper connector to plug into the ProgRock2 connection. The online instructions appear to be using a Linux app that I can’t find on my Windows computer.
What I need is a “cookbook” process for programming the ProgRock2 to the frequencies I need. I realize the output is a square wave and this may be a problem but first I would like to get them set up for my needed frequency before dealing with any square issues.
Any help with this would be greatly appreciated.
Tom N5AMA
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Re: Max Voltage for QMX 9V
Most of the noise produced by these converters is below 5 MHz. Very little at all is produced above 7 MHz.
?
?
--
John AE5X
?
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Re: Max Voltage for QMX 9V
Evan:
?
Will this cause additional interference due to the use of such buck/boost converter?
I like this solution but I'm concerned about the additional noise and birdies when RX.
I would be grateful for your/any opinion.
73 Wlado?
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On Sun, Mar 30, 2025 at 11:02?PM Rick Williams - VE7TK via <ve7tk= [email protected]> wrote: I just finished playing in the CQ World Wide SSB contest! My setup included the QMX+ (firmware 1_01_003) and a 3-el yagi at 15 metres above ground.
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The QMX+ performed beautifully. I made 118 contacts on 3 bands. Worked 32 different DXCC Entities in NA, SA, Eu, Asia and Africa. My final claimed score is 29,952. All this with 3 watts or less!
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I had lots of fun! Thanks Hans!
--
73, Rick
VE7TK
Website:
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Re: Qmx plus rev 2 not powering up
The last screen shot!
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73
Azgael
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Re: Qmx plus rev 2 not powering up
Finally success following the power pad did help. Surprisingly enough there seams to be a broken via or track connecting source of q102 to ic101 to input. ?Now I am a bit concerned with other issues with this PCB.?
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Now the fix simple wire connection?
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BOOM IT WORKS
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seams not to have any other issue with the 5 and 3v, but as I said no idea about any other via issue!!
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Thank You very much for the feedback Ludwig and Zhenxing was a good tip!
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73 Azgael
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Re: I just ordered a QCX+ kit
Good luck with your QCX+. You do need good eyesight and a magnifying glass to identify the parts.? I built my QMX and QMX+ at eighty. They are great kits. I have made several SSB contacts with good success. I worked at Heathkit for thirty years. What a great company they were.
On Mon, Mar 31, 2025 at 3:45?AM Pierre - FK8IH via <jb.gallauziaux= [email protected]> wrote: After months, even years of thinking I eventually ordered another QRP Labs kit today: a QCX+.
I had previously built a QDX Hi Band and am satisfied with it. I followed closely the development of the QMX and thought to buy a 60M to 15M model then followed the development of the QMX+.
I read a lot of comments about the problems experienced by some builders and as I'm 80 years old, with bad eyesight and rather shaky hands and considering my former experience to build my QDX then modify its T1 transformer and replace the BS170 I finally thought that such tiny technology was not anymore for me.
I will build my 20M QCX+ with dev-board, TCXO and AGC cards. With the dev-board I plan to experiment with internal LiFePo4 batteries, audio amp with speaker and why not do something with the IQ signal ahead of the CW filter to decode in Rx SSB and AM.
Another reason for my choice of the QCX+ is that it is very robust and there are no SMD components, only through-hole components, something I have been used to deal with since the year 1959 with my first regenerative receiver built with vacuum tubes then many Heathkit units.
73 - Pierre - FK8IH
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Re: Max Voltage for QMX 9V
Pierre,
?
I have found that using a buck/boost converter when connected to batteries is better.? That allows constant voltage to the QMX until the batteries can not supply power.
?
?
or
?
?
73
Evan
AC9TU
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Re: sound from the PC and QMX+
Hello Martin,
?
If you are on a Windows version, have you tried using the "listen" feature on the sound system?? How you get to it is dependent on your version of Windows.? For Windows 11, it is under Settings>System>Sound>Advanced>More sound settings.? Select the Recording tab.? Select the device (I used my mic for this example).? Click the Properties button, then check the Listen to this device box.
?
?
I hope this helps.
73
Evan
AC9TU
?
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New broken QMX+, need repairhelp in Sweden.
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Regards
?
Roger SM7RYR
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Contact: sm7ryr@...
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sound from the PC and QMX+
When I have the QMX+ set up for WSJT-X I have to select the QMX for Audio in and out.? Now I don't have the sound from the Pc any more. Is there a way to have both?
--
Martin
DK3UW
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Re: Available Hand Mics for QMX SSB ?
I used a Baofeng microphone in which I put a new 50 ohm, 1W speaker and a new microphone capsule. I am surprised how good and loud it sounds in the new speaker without any amplifier. I removed the resistor that was connected to the red LED from the printed circuit board.
?
Zrinko Ivan, 9A7AM
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?
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Re: 74ACT08 damaged and LCD is all blocks
On 31/03/2025 07:42, Chris via groups.io wrote: I don't buy this, sounds like FUD to me. Chris, I wish you would not use these, obscure to me, acronyms:-) But you did post " one way to check the power connectors is to use a meter in diode mode with the power reversed so I can see the 0.6V drop across D110 the surge protection diode." You made me think you could be reversing the input power, if limited it would show the 0.6 volts. I did not think you that stupid but... 73 Alan G4ZFQ
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I just ordered a QCX+ kit
After months, even years of thinking I eventually ordered another QRP Labs kit today: a QCX+.
I had previously built a QDX Hi Band and am satisfied with it. I followed closely the development of the QMX and thought to buy a 60M to 15M model then followed the development of the QMX+.
I read a lot of comments about the problems experienced by some builders and as I'm 80 years old, with bad eyesight and rather shaky hands and considering my former experience to build my QDX then modify its T1 transformer and replace the BS170 I finally thought that such tiny technology was not anymore for me.
I will build my 20M QCX+ with dev-board, TCXO and AGC cards. With the dev-board I plan to experiment with internal LiFePo4 batteries, audio amp with speaker and why not do something with the IQ signal ahead of the CW filter to decode in Rx SSB and AM.
Another reason for my choice of the QCX+ is that it is very robust and there are no SMD components, only through-hole components, something I have been used to deal with since the year 1959 with my first regenerative receiver built with vacuum tubes then many Heathkit units.
73 - Pierre - FK8IH
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Gary W9TD
Pierre - FK8IH