Re: AB8DF CW Practice / Rag Chew 1/2/25
Hello ED ES ALL,
Your invite got me out to my backyard for a “portable ops dry run”, so thank you for the inspiration. ?Unfortunately prop did not seem to cooperate to reach South Florida.
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WB0ZJJ-Alan
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#136401
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Re: Release of version 1.2 of ABS solution for QMX+ (Automatic internal antenna tuner, internal battery and internal speaker with audio amp)
#ABS
#ATU
#PSU
#QMXplus
Would also be interested if anyone decides to kit... if not, I may, with permission, try to put some together, but that would probably be at least a few months away.
Bob
KG5GTE
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Bob Parr
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#136400
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Re: Wanted: low power 50 MHz. linear amplifier
Besides the QRP-Labs 10w kit, which I see was discussed on another group as an option, (and qrpbuilder.com is using one on 6m, reportedly), there are options from 60dbm.com. Not the cheapest, but
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Nate Reik N8BTR
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#136399
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CW Practice / Rag Chew
On 1/2/25 I had a CW practice / rag chew session on 40 meters. I worked three stations:
Conditions were very poor. SSN = 163, SFI = 219, A = 86, K = 5 so the band was pretty noisy.
I will be doing
By
Ed Kwik
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#136398
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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
Hans,
Looking at web hits for PCM1804 failures other than on QM* products, I only see low level noise issues.
What's being reported in this forum is complete failure.
A 15% failure rate is
By
Jerry Gaffke
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#136397
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Re: Release of version 1.2 of ABS solution for QMX+ (Automatic internal antenna tuner, internal battery and internal speaker with audio amp)
#ABS
#ATU
#PSU
#QMXplus
Please include me in the next buy. Many thanks and 73, Mitch NK3H
By
Mitch NK3H
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#136396
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Re: QMX LDMOS finals
Hi Chris,
I am not sure why there is a difference of peak voltage on the lower frequency bands unless it is due to higher gain at lower frequencies.
I would be hesitant the to change the finals in
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Evan Hand
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#136395
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Re: 2m/440 cw/ssb qrplabs kit?
Tiny SA is fine for HF - VHF harmonic level compliance checks *PROVIDED* that you know what you are doing.
Basically there's a *very* narrow window of absolute input powers where both a main carrier
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Bruce Akhurst
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#136394
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Re: QMX LDMOS finals
It makes more sense to make the change on a QMX+ since on 80m and 160m the peak voltage, even with 1:1 SWR exceeds the BS170 maximum voltage rating.
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Chris KB1NLW
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#136393
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Re: 2m/440 cw/ssb qrplabs kit?
Hi Curt,
I can't see why a tinySA wouldn't do the job, I think that its dynamic range is 70dB, that might not be good enough to measure the good quality cavities of a 2m repeater but plenty enough to
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Yannig - F4IUJ
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#136392
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Re: QMX LDMOS finals
As Harold mentions, it can be done with TN0110s, I've done so in several QDXs. But I would NOT do this in a QMX.
-Nate
N8BTR
By
Nate Reik N8BTR
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#136391
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Wanted: low power 50 MHz. linear amplifier
I'd like to acquire a 10 - 50 watt linear power amp to use with a 50 MHz. beacon transmitter. Input must be in the 10-18dBm range. Kit or assembled or "needs repair" is
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Robin Midgett
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#136390
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Re: QMX LDMOS finals
No it would just be difficult to make it work
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Bruce Akhurst
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#136389
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Re: 2m/440 cw/ssb qrplabs kit?
Why not just get a transverter?
There was a ham in Ukraine that had a store before the war started. No one else seems to be interested in picking up that mantle (that I’m aware of).
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Damon
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#136388
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Re: QMX LDMOS finals
Did not investigate the component TN0110 further, but may provide opportunity in combination with an "U" shaped heatsink instead of a washer when installed in a neat way.
Harold PE1RJP - Happy QMX+
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PE1RJP
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#136387
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Re: Release of version 1.2 of ABS solution for QMX+ (Automatic internal antenna tuner, internal battery and internal speaker with audio amp)
#ABS
#ATU
#PSU
#QMXplus
I’m interested in one full kit, if another group buy happens. Thank you for what you do!
tom KE5CW
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Tom KE5CW
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#136386
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Re: I damaged my QCX mini
Rick, the 0603 size (first checked item) would be the easiest to work with.
If you have a small leaded 150 ohms resistor, you might be able to solder
it in that spot if clearances work out too. Good
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Ronald Taylor
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#136385
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I damaged my QCX mini
Hi all,
I was trouble shooting a problem with my QCX mini for 20m Rev. 3 board T1.09a
When I would push down on the tune rate knob or even? touch the knob to adjust the volume the volume would drop
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Rick Mahan
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#136384
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Michigan QRP Club Zoom meeting invite and report
We had eleven folks at the 26 December Michigan QRP Club weekly Zoom chat. Please join us Thursday January 2nd (and every Thursday) at 4PM Eastern for the Michigan QRP Club weekly QRP Chat where the
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Ed Kwik
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#136383
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Re: No Transmit
Stan, Guess I won the dummy award of the year on the 1st day. The QMX+ was in Digital mode. Set it to CW and all is well!
Tnx,
Tom KT4XN
________________________________
Sent: Wednesday, January
By
Tom Crowley KT4XN 1738
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#136382
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