#bitx40help #bitx40
#bitx40help
#bitx40
Attached is the log of my multiple attempts to upload a sketch to the Nano. I only see the power led lit on the nano. What am I doing wrong?
mike
ai4ns
By
Mike Short <ai4ns.mike.spam@...>
·
#64275
·
|
Re: Spurs/Harmonics fixes for v4 based on v5 board design?
Yep I was thinking about hacking that trace up. have to search around to see if there is a ground but I couldn't find anything that looked near by on the schematic.? But maybe probing around might
By
Dave Space
·
#64274
·
|
Re: Spurs/Harmonics fixes for v4 based on v5 board design?
Mainly based on this review:
https://www.sdrplay.com/wp-content/uploads/2017/09/QSTRSP2review.pdf
Seems like for $60 more you are getting a more rugged device with shielding.? The difference between
By
Evan Hand
·
#64273
·
|
Re: Spurs/Harmonics fixes for v4 based on v5 board design?
I'm curious why you went for the RSP2.
It does switch between multiple inputs nicely.
The 12bit ADC should be plenty for what we are doing.
The RSP1A is newer and cheaper, and has the 14 bit
By
Jerry Gaffke
·
#64272
·
|
2 New kits in stock!
Both open source based on JackYack keyer code
Keyer: https://shop.kit-projects.com/index.php?route=product/product&path=59&product_id=99
Touch Key/er:
By
N8DAH
·
#64271
·
|
Re: Spurs/Harmonics fixes for v4 based on v5 board design?
I went ahead and bought the RSP2 for the $170.? Will share results after I get it and have a chance to learn more about it.? I want to see if it can find the spurs on 10 meters.? I can also use the
By
Evan Hand
·
#64270
·
|
Re: Spurs/Harmonics fixes for v4 based on v5 board design?
Hi Jerry,
Good points. Yes, using an si5351 as a tracking calibration source should work well.
Tom, wb6b
By
Tom, wb6b
·
#64269
·
|
Re: Spurs/Harmonics fixes for v4 based on v5 board design?
What was “the mod suggested for the v5 board “?
Anybody out there built a Sweeperino or Specan? I have gathered some of the parts...
In November Ashhar wrote “where the 12 mhz from the bfo
By
ohwenzelph
·
#64268
·
|
Re: Spurs/Harmonics fixes for v4 based on v5 board design?
Calibration is what I was driving at with my previous post, but should be easy enough to take care of.
We need at tracking generator, the si5351 might do.
It gives a square wave, but an SDRplay can
By
Jerry Gaffke
·
#64267
·
|
Re: Spurs/Harmonics fixes for v4 based on v5 board design?
I too have been thinking on how to make this modification, though after looking at some pictures of the RF Gain modes where he did drill through the board to get a ground was looking like a good way
By
Evan Hand
·
#64266
·
|
Re: Auto TX Smart Filter Controller
#nano
#arduino
#filters
#ubitx
Hi Woody,
?
Thanks for your interest in the smart filter controller. As I answered your question via email, I'll include the core of the reply here for others that may have the same
By
Tom, wb6b
·
#64265
·
|
Re: Spurs/Harmonics fixes for v4 based on v5 board design?
Dave
I am thinking avoid drilling hole.? one must disconnect at R27 somehow to insert this new filter.? I think grounding C205 to some location near where you new filter will sit is most important
By
Curt
·
#64264
·
|
Re: Spurs/Harmonics fixes for v4 based on v5 board design?
I'd looked at the SDRplay receivers some time ago, with the upgrade to the ADC this looks like a promising SDR. On the comment about the sampling rate and span that can be seen at one time. With
By
Tom, wb6b
·
#64263
·
|
Re: 4 bitx radios
Can see your point Wayne
I thought I had attached images of them
Will try again.
I have several cases that are big enough X and Y But too shallow in the Z would need to lay down the display and
By
_Dave_ AD0B
·
#64262
·
|
Re: 4 bitx radios
Uhm, and?
LOL
I have 2, and an unassembled BITX20.
the exciter for the 20 says 40, but it'll be 20 when I get it done.
I spend a lot of time not feeling well, and get delayed. need to
By
Wayne Leake
·
#64261
·
|
4 bitx radios
Have 4 of these critters in our hamshack.
By
_Dave_ AD0B
·
#64260
·
|
Re: Need Help Troubleshooting UBit-X
#ubitx-help
Perhaps Bill's point was that pushing a stereo plug into a stereo jack
can somehow momentarily short one of the signals to ground.
A 4 ohm resistor between uBitx main board and the headphone jack
By
Jerry Gaffke
·
#64259
·
|
Re: Need Help Troubleshooting UBit-X
#ubitx-help
Jerry
How I get around the mono/stereo problems is to wire the headphone jack onto the two end posts only. I let the base float. Stereo headphones are in essence wired in series. monaural works the
By
_Dave_ AD0B
·
#64258
·
|
Re: Need Help Troubleshooting UBit-X
#ubitx-help
If you happen to have only stuff with mono plugs and sockets lying about, that's a good solution.
But all new headphones these days are stereo, so you might need an adapter to go from mono to stereo
By
Jerry Gaffke
·
#64257
·
|
Re: spurs & harmonics, whew!
I am going with Gordan Gibby's daughter board that just hosts 3 relays, mostly because my local club kitted this solution - and other than cutting traces there is little rework to the main board.? I
By
Curt
·
#64256
·
|