Re: RFI from uBitx TX after AGC and other mods installed
I began to see that his problem seemed to be AGC related, being somewhat thick headed this am. Oh well. nd6t_6@...> wrote: -- Michael Shreeve N6GRG
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Michael Shreeve
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#53141
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Re: RFI from uBitx TX after AGC and other mods installed
Mike, This thread is about the AGC and a possible RF feedback issue. The ClickFix is does not seem to be involved. In answer to your question: I just fired up the V4 board and Farhan's circuit fixes
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Don, ND6T
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#53140
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Re: ADE-1-24
Hi everyone, About the ADE-1-24, The spec's are somewhat equal to the Data-sheet of the ADE-1 The only big difference is that the footprint of this mixer is actually a mirror image of the original
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pa0jen@...
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#53139
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WSPR Empty Data
I am using uBITX 1.080 and uBITS MM 1.081 to add WSPR count and data. In MM I read from uBITX, fill in count and WSPR generated data, Write to uBITX (Write Target/Write/Match Data/OK and disconnect
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Bob Shaw <ve3suy@...>
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#53138
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KD8CEC Nextion - Hardware Question
#ubitx
Hi All, I just ordered a display to experiment with the KD8CEC tft firmware. Looking at the pictures on his blog I can see that it has a bar for showing power output. How does this work as the stock
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M0ZHN
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#53137
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Re: RFI from uBitx TX after AGC and other mods installed
Not to threadjack, but a related question on RFI. Does changing the flying leads from the board to the antenna connector, to a short piece of coax have any measurable difference in "in box" or nearby
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atouk
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#53136
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Re: RFI from uBitx TX after AGC and other mods installed
Oh, and for some who haven't actually looked at the v3 or v4 circuit, the rx and tx do not come from the radio, but in fact pins on relay k1. On the new V4 ashar is controlling the new pop mosfet
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Michael Shreeve
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#53135
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Re: RFI from uBitx TX after AGC and other mods installed
Just starting the pop fix. Looking at your circuit and the uBITX circuit. I've enjoyed your art work BUT, I"ve never worked with art work. Occasionally a large identification pc board photo or graphic
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Michael Shreeve
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#53134
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Re: Transmit Voltage and Thanks
And a related question, how much current will be drawn at these elevated PA supply voltages? For example, would a 19V 3A laptop power supply be expected to work? Thanks!
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Arvo W0VRA
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#53133
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Transmit Voltage and Thanks
I just completed my uBITX and I installed the double dc inputs. One for the receiver and the second for the PA. ?How high can the input for the PA be without damage to the power transistors. ?I am
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hotrod541@...
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#53132
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Re: W8TEE Power/SWR Sketch for Nano
Glenn, Looks like you are way ahead of me......you have a board assy. Ah, the magic of 4 per 100mm x 100mm panel. On the LED bargraph version we're using a BN43-302 core and have found the two sides
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Kees T
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#53131
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Re: Microscope - - new thread
I can get mine about 12 inches away from my work and still focus. I don't however solder with it. I use magnifier glasses for soldering and the USB Scope for inspection. If I put it right on the board
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Joel Caulkins/N6ALT
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#53130
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Re: RFI from uBitx TX after AGC and other mods installed
Thanks Alan. This is a real mystery! There has to be something that I am missing. Just doesn't seem possible but there it is! -Don
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Don, ND6T
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#53129
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Re: Microscope - - new thread
I was looking over the specs for it and have a hard time with the working distance. Seems that it is about 2 inches for a 20 x which is very close to the work to do any soldering. Then there seems to
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Ralph Mowery
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#53128
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Re: Noise Burst
#bitx40
Yes, raduino_v1.27.7 fixes this problem. Download it from https://github.com/amunters/bitx40 and install the related (minimal) mods (see instructions included). 73 Allard PE1NWL
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Allard PE1NWL
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#53127
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Re: Microscope - - new thread
I have this USB Microscope, https://www.dinolite.us/products/digital-microscopes/usb/am3111t I know it's kinda pricey but it works great and is designed for viewing SMD and PCB's. I think all those
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Joel Caulkins/N6ALT
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#53126
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Re: RFI from uBitx TX after AGC and other mods installed
Don: I have Kees pop fix board in place and it works great. I have already completely disconnected the AGC board to make other changes. When transmitting with the volume control twisted pair leads and
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alans77@...
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#53125
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Re: Bitx40 75KHz Spurious, How to solve it.
#bitx40
Raj, What then are the exact beginning and ending of the scan? If the center frequency is 7.029Mhz then a 500khz scan would run from 6.779Mhz to 7.279Mhz. I can come up with no spurious products that
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Tim Gorman
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#53124
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Re: JackAl Board Debut
We're using the SPI interface. It is a resistive touch panel. We're coding for the RA8875 chip and 5" and 7" displays. Jack, W8TEE
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Jack Purdum <jjpurdum@...>
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#53123
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Re: Noise Burst
#bitx40
Allard's fix to the Bitx40 carrier burst using a delay in the code is described here: ? ??/g/BITX20/message/33756 ? ??/g/BITX20/message/34189 There is also
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Jerry Gaffke
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#53122
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