Re: QDX on 60 meters?
Clickable: https://ae5x.blogspot.com/2021/11/spectrum-analysis-qdx-on-60m.html -- John AE5X
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John AE5X
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#74173
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Re: QDX on 60 meters?
For those interested: https://ae5x.blogspot.com/2021/11/spectrum-analysis-qdx-on-60m.html -- John AE5X
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John AE5X
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#74172
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Re: QDX , Lost my TX power
Hi Matt, Have you measured your RF voltage at the output of T1 yet with your probe? The RF should be about the same as at the BS170¡¯s, this is the junction of C32, C34, T1. C32 feeds the voltage
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Skip Davis
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#74171
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Re: Elecraft KXUSB with QCX Mini
An additional note: RS232 logic "1" is a negative voltage, logic "0" is positive. TTL logic "1" is a positive voltage and logic "0" is 0 (or a very low positive voltage)---NORMALLY Milt W8NUE
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Milt
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#74170
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Re: Roots of Hans's supply chain issues
I think it's the "just-in-time" inventory thought process that puzzles me as an economist the most. I can understand skimping on inventory during the Carter years when the prime interest rate was 21%,
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jjpurdum
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#74169
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Re: Roots of Hans's supply chain issues
He is actually the chief engineer. I was an engineering officer in the merchant navy and we were all more important than the captain and other deck officers. They were just the engineers "look outs"
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R. Tyson
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#74168
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Re: QCX mini constant tone
#qcxmini
I get this constant tone as well. Will hope for a fix even though the mini is still usable. 73 de Arnie W8DU
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W8DU_Arnie
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#74167
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Re: Roots of Hans's supply chain issues
Reminds me of the joke about the gentleman who invested all his money in toilet paper and revolving doors. He was wiped out before he could turn around................ Lee KX4TT
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Lee
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#74166
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Re: Roots of Hans's supply chain issues
A friend of mine is a Technical Marketing Engineer for Microchip for one of their uController lines. He has told me numerous times that every month they could sell twice what they produce and they are
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Mike - N5AQM
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#74165
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Re: Roots of Hans's supply chain issues
Well, it reminds me of my favourite "Snatch" movie line... "Never underestimate the predictability of stupidity". 73 Hans G0UPL http://qrp-labs.com wrote:
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Hans Summers
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#74164
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Re: Roots of Hans's supply chain issues
Quite right. I try not to ascribe to conspiracy anything that could be the result of stupidity. I once saw a cartoon that was all too apt. ¡°Be proud of your stupidity,¡± it said. ¡°It¡¯s what
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Mike Perry, WA4MP
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#74163
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Re: Deal on QRP-Labs power plugs
Those who want to avoid playing Amazon roulette might want to try this West Virginia-based vendor. They sell a lot of these plugs to those who install alarm and CCTV systems and don¡¯t want to lose
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Mike Perry, WA4MP
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#74162
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Re: Roots of Hans's supply chain issues
Hi Mike It is not just profit-driven. We have seen decades of a relentless drive to make everything cheaper. Profit = Revenue - costs. The consumer pushes revenue down and the manufacturer has to push
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Hans Summers
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#74161
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Re: QDX: any estimate when the last of the first batch units will all be shipped out?
Thanks, Hans. ?I found the shipping confirmation email. ?Yahoo mail does some very odd things. 73, Ben ?K0IKR
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Ben Bangerter, K0IKR
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#74160
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Re: Deal on QRP-Labs power plugs
Yuck, mine are definitely copper of the right size, but as I said: Amazon uses something called "inventory commingling" to ship items from several different vendors apparently at random in response to
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Mario Vano AE0GL
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#74159
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Re: QDX Surface Mount inductors
Hans, This is a totally acceptable solution for me.? Glad that you cleared up my understanding.? Now to wit for the availability of the v2 kits. 73 Evan AC9TU
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Evan Hand
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#74158
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Roots of Hans's supply chain issues
The captain of a large cargo vessel has a great video explaining the various roots of the issues Hans has with getting the parts he needs. This comment about the high-tech industry is particularly
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Mike Perry, WA4MP
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#74157
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Re: QDX Surface Mount inductors
Hello Evan I apologize if I was unclear. Rev 2 PCB uses through-hole axial molded 47uH inductors, as were supplied with the Rev 1 boards. However on the Rev 2 PCB, there are through-hole pads on the
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Hans Summers
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#74156
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Re: QDX , Lost my TX power
I think you need to check the output of??IC5 - driver for the BS170. When my got busted - I did also measure about 27dBm? (should have been about 37dBm) out of the transistors after changing , but
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Knut Steinar Fremme OE4KSF
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#74155
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Re: QDX , Lost my TX power
I finished mine yesterday an I had about 25 QSOs on 40 and 30 m (40m with Dipole, 30m with lw). Than I changed to 20m (Magnetic Loop..... I tuned the Loop before with my TS940 got get the resonance
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[email protected]
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#74153
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