Re: RF power chain mods and improvements..
For the very low bands and narrow bandwidths I'd thing simpler radios would do well.. Allison
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ajparent1/kb1gmx
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#51198
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Re: Nextion Display
Allen: No one solution is going to be the right fit for all. The fact you can do what you need to do with the Nextion is great. Al and I chose a different display because we intend to have it
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Jack Purdum <jjpurdum@...>
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#51197
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Re: Nextion Display
The more I play with the Nextion ?Suite and get use to it the more I like it. As with the button you just click on button and it is done for you, it has a field for you to put in what you want it to
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Allen Merrell
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#51196
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Re: #ubitx-help
#ubitx-help
That is good news, I would look at one of the trifilar interstage transformer being shorted. I mentioned the numbers earlier. If the transformers are fine then a dry solder in the RX chain or filter
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Raj vu2zap
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#51195
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Re: #ubitx-help
#ubitx-help
Thanks Raj, I will look on that! But now a little more info: I looked up a very strong broadcast station at 13.580 on my little transistor radio (with a small telescopic antenna) and I could hear on
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hakan.sjostrom@...
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#51194
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Re: #ubitx-help
#ubitx-help
I think OTOH that this problem is not due to your accidental interchange. CW is generated by the first mixer stage so it is something in the 2nd stage or later. Check BFO frequency and IF stage (2nd)
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Raj vu2zap
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#51193
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Re: #ubitx-help
#ubitx-help
Hakan, Got it! the only severe damage could have been cause by PIN 3 +5v and 4 Gnd.. now this would have connected to volume ground and center variable pin. If the volume as at minimum as it would be
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Raj vu2zap
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#51192
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Re: #ubitx-help
#ubitx-help
Raj, I did not shift the pins - I put the Raduino connector on the ubitx board and vice versa! And more: the CW part works with RF out. (Have not tested the SSB part yet.) And when I connect the
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hakan.sjostrom@...
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#51191
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Re: #ubitx-help
#ubitx-help
When I inserted the Raduino one pin to the left the raduino was toast! The damage depends how many pins did you shift left or right.. one of the pins has 12v and that would fry the Si chip or the
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Raj vu2zap
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#51190
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Re: BITX QSO Afternoon/Evening, Sunday, June 3, 3PM & 7PM Local Time, 7277 kHz in North America, 7177 kHz elsewhere.
Why not keeping just one frequency like, 7177 which is common to both sides of the Atlantic and the other oceans?
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iz oos
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#51189
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Re: #radiuno External VFO?
#radiuno
John, I use an Arduino Nano AD9850 external vfo? with my Corsair II, that uses a free turning optical encoder and the Corsair digital display. Currently working on another version with a 20 x 4 lcd
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Robert McClements <gm4cid@...>
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#51188
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Re: micro bitx: strong signals from broadcasting stations
What does local mean? A nearby station on medium wave, a station just above the 40 meters band or an FM broadcast?
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iz oos
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#51187
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micro bitx: strong signals from broadcasting stations
Hi, I have successfully completed the microbitx construction. when I calibrate I could hear the strong signals from the local broadcasting station. I could not avoid it,though I hear the ham nets in
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vu3jyt <vu3jyt@...>
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#51185
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Re: #ubitx-help
#ubitx-help
Yes the connector can only be plugged in one way, but the mistake I did was that I shifted the two connectors (for the uBITX board resp. the raduino board)
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hakan.sjostrom@...
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#51184
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Re: #ubitx-help
#ubitx-help
Would you switch off power and plug in the 8 pin like you did by mistake and take a photo for us? That would help troubleshoot. I am quite sure the connector can be plugged in only one way! Raj
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Raj vu2zap
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#51183
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Re: Nextion Display
Congratulations. And I can do all that without learning to write and compile GUI programs under Windows or Linux? Or this RPI OS you mention? Also, I prefer wxWidgets so you should use that instead.
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n2vdy
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#51182
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Re: Nextion Display
Actually yes it did work out good for us. We can run the same Remote Control Program on any Windows, Linux, or RPI and control all the features of the uBITX. rOn
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W2CTX
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#51181
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Re: digital modes - how to connect computer line out
I used a USB soundcard, more because my laptop has a combined audio port for speaker/microphone. But just two 3.5-3.5mm cables from the soundcard to the speaker and the microphone connector of the
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John
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#51180
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Re: Nextion Display
True but that wasn't the question. I'm sure your way works great for you though.
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n2vdy
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#51179
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Re: Nextion Display
You can get an RPI-3 and a 5" color touchscreen for the price of the Nextion. Use fltk to design your UI and code in c. When you are done you can write code for many machines. With Nextion your stuck.
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W2CTX
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#51178
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