Re: Raduino CAD Files
The Files section works but I see 2 page 2s 73 Kees k5BCQ
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Kees T
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#50249
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Re: Raduino CAD Files
I also uploaded the files to folder "W3JDR" in the files section.
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W3JDR
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#50248
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Rarduino board
I thought I had saved a message that someone had some blank boards for the Raduino board.? Can not find it. Could whoever has those blank boards contact me off list at: rmowery28146@... de
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Ralph Mowery
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#50247
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Re: ND6T AGC implementation for uBIT-X
Nick,? Relative to DX postage. I have shipped 1-2 small parts overseas in an envelope before but never 2 whole small kits and boards in one airmail envelope. The local Post Office wants a US Customs
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Kees T
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#50246
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Re: Raduino CAD Files
PS to my previous: I thought I attached the files, but I don't see any reference to them on my end. If there's a trick to this, can someone instruct me?
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W3JDR
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#50245
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Re: Raduino CAD Files
If anyone is interested in reviewing and commenting, I have attached the schematic (2 pages) for my "Raduino Pill" board. This is a first draft;? Some pin assignments are TBD and there are
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W3JDR
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#50244
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Re: boosting the power on 28 MHz
#ubitx
Just a thought, but maybe we are approaching this backwards. It might be easier and more appropriate for QRP use if we were to attenuate the lower frequencies to match output at 30 MHz. 8-) Arv _._
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Arv Evans
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#50243
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Re: RF power chain mods and improvements..
I haven't measure the filter bandpass. But just listening to it, it sounded ok to my ears, even when going way down the skirt. And as I recall, I had to crank it over more than 2k khz before it seemed
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Jerry Gaffke
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#50242
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Re: RF power chain mods and improvements..
What this means to me is that the rf chain is missing a stage... the driver to the PA. ?Ive thought this all along and planned to completely redesign the rf chain from scratch.? ? *Dr.?* *William
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K9HZ
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#50241
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Re: RF power chain mods and improvements..
This approach works well but you must first have enough gain at 30 MHz to use this technique.? ? *Dr.?* *William J. Schmidt - K9HZ*
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K9HZ
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#50240
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2 meter bitx possible?
I am curious if it would be practical to make?a 2 meter ssb version of the BITX and how many would be interested in one? Roxie -- K1AUS
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R. E. Klaus <reklaus@...>
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#50239
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Re: RF power chain mods and improvements..
Ian's software is a clever hack. It has ons drawback though, as it pushes the signal into 45 mhz filter's skirt, the signal will have sloping bandpass with more than 10db slope from one end to the
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Ashhar Farhan
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#50238
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Re: RF power chain mods and improvements..
I haven't messed with KD8CEC's software, or even looked at it yet. Likely will use it when I try out digital modes. I could provide stripped down uBitx software that implements the 45mhz attenuator on
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Jerry Gaffke
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#50237
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Re: RF power chain mods and improvements..
Based on the known data that if the gain falls with increasing frequency the fix is obvious. Use devices that have better performance over the frequency range.?? The fix the problem approach is
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ajparent1/kb1gmx
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#50236
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toroid on USB line for CAT control
#ubitx
Ever since I have been using cat control for FT8 on the CEC firmware. I have been having intermittent lockups involving the usb port. I have a work around it seems that I must have been getting some
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_Dave_ AD0B
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#50235
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Re: RF power chain mods and improvements..
Allison, Getting the analog stuff to where it is flat from 3.5-30mhz is preferred if the mods are easy, we much appreciate your efforts in this in this regard. However, gain per band can be done with
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Jerry Gaffke
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#50234
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Re: spurious signals on FT8
#ubitx
A few things I found with my Bitx40 and Ubitx. Turn the drive down in the rig itself for digi modes, also check for any kind of ground looping. When I was 1st running my Bitx40 I ran r136 at half of
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N8DAH
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#50233
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Re: Nextion Display
Jack, ? Thanks for that info, I will have to try that. I am still debating the analog style vs. the bar graph. I think analog looks nice if done right and I am going to give it my best effort but if
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stephanus1@...
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#50232
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Re: CW Transmit Frequency VS Sidetone setting
#radiuno
#ubitx
#ubitxcw
#firmware
You are absolutely right. We had similar discussions for the Raduino sketch for?BitX40 at the time. During TX the frequency shouldn't be shifted - the actual TX frequency should be?equal to?the
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Allard PE1NWL
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#50231
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Re: Nextion Display
Initially, I had an analog S-meter on the JackAl board, but changed to a bar meter, mainly because I was running out of nano-acres. You can make the meter look "less jerky" if, when you compare the
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Jack Purdum <jjpurdum@...>
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#50230
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