Re: QMX Shipped, panic stage
#qmx
Billy, my QMX worked properly from the moment I fired it up. 100% smoke free! Just some minor screen issue that was my fault, and I soon corrected. One of my friends, who ordered a QMX kit two or
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Rick NF6G
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#108927
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Re: 6 and 8m QDX prototype
Actually I stuffed up again. The 8/6m QDX LPF
Is this
6
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Afghan Kabulldust
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#108926
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Re: #qmx QMX and waste heat from the finals
#qmx
Before making a radical change to the PA transistor (BS170s) thermal design it is necessary to fully understand the the thermal parameters.? As Hans ha pointed out:
* The six layer board conducts
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Chris KB1NLW
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#108925
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Re: QMX Shipped, panic stage
#qmx
Hans,
Well, you did it.
1. I will carefully read the messages from now on - many have some germ of good info.
2. Right, why waste time posting when you have better things to do.
3. Telling
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N5SE
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#108924
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Re: 2nd QMX Build and it wont power on and an update on my old unit...
If you want to send it to me, I’m sure I can help out. ?At this point I’ve fixed over 20 QMX rigs. ?Contact me for details of where to send it.
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Jeffrey W Moore
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#108923
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Re: 6 and 8m QDX prototype
Schematic that was missed off last email
Next I’ll send the 80m only QDX
Sent from my iPhone 6
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Afghan Kabulldust
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#108922
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Re: #qmx QMX and waste heat from the finals
#qmx
I believe Chris is correct.
Me personally, I have never added a heatsink to any of my QCX, QCX+,
QCX-mini, QDX and QMX, and I have yet to burn up any BS170s other than that
night earlier this year
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Hans Summers
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#108921
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6 and 8m QDX prototype
Sorry iPhone sent by a light touch of finger by mistake.
Bob, Jim and others,
Here’s a pic of the 6m prototype. Firstly, I printed my own T50-0 toroids; secondly, you’ll note the T50–6 in the
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Afghan Kabulldust
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#108920
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Re: ChatGpt/GPT4
Yes try GPT4 its much better, and as from yesterday they are offering an Enterprise edition that keeps all company data private and safe.
Its loads better than chatgpt but costs $20 a month, well
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Paul Harrison
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#108919
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Re: #qmx QMX and waste heat from the finals
#qmx
Before making a radical change to the PA transistor (BS170s) thermal design it is necessary to fully understand the the thermal parameters.? As Hans ha pointed out:
* The six layer board conducts
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Chris KB1NLW
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#108918
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Re: QMX Shipped, panic stage
#qmx
Hello Billy
1) You're reading the wrong messages. There have also been several nice
reports of success stories.
2) You also need to remember that all mailing lists have an inherent
negative bias, in
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Hans Summers
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#108917
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Re: QDX-M on 6 meters?
?Bob, Jim and others,
Here’s a pic of the 6m prototype. Firstly, I printed my own T50-0 toroids; secondly, you’ll note the T50–6 in the BPF; thirdly, you’ll note the binocular is not the
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Afghan Kabulldust
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#108916
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Re: QDX - protection of BS17O PA
nvm, I see someone else started a thread with that exact question
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Jonathan Halterman
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#108915
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Re: ChatGpt/GPT4
I have used it to generate outlines of Python code. It speeds up the initial process when I don’t know what libraries I need to use. My first try was a 3D water fall plot from a wav file of passing
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Colin Kaminski
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#108914
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QMX Shipped, panic stage
#qmx
Hans,
Received message my QMX shipped today. Thought I would be excited. But instead, I am reaching panic stage. With all the misery I have read in the last week, I figure my chance of ever getting it
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N5SE
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#108913
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ChatGpt/GPT4
I wonder how many of you are using chatGPT/GPT4 etc to assist in various things like Ham radio, programming or work?
Paul DJ0CU G4ADF
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Paul Harrison
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#108912
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Re: QDX - protection of BS17O PA
The finals don't need any protection.
As Jim says, just follow the science of what you are transmitting into and make sure all your antenna connections are sound.
I would certainly recommend some
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Ted 2E0THH
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#108911
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Re: QMX: Kit Build complete - My observations
Hi Steve
Hi all - mine is also complete and working extremely well. Amazing kit and
Thanks Steve! Nice to hear of your success.
It's what you get when we put in a 25 MHz TCXO frequency reference
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Hans Summers
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#108910
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Re: Power supply recommendation wanted
If you're looking for more info on those HP and Agilent power supplies,
it's now on the Keysight website. Agilent, which was originally spun off
from HP when the parent company chose to focus on its
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Shirley Dulcey KE1L
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#108909
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Re: Power supply recommendation wanted
I worked many years for HP/Agilent, so you can guess my suggestion!! Fortunately, it's just a power supply, so not priced crazy. You can also find cheap (garbage) but workable imported jobs on
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Dave Edwards
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#108908
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