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Solid-state T/R switching
#ubitx
I've thought of doing away with the physical relay switching between TX & RX, by using a power transistor to activate the RX whenever TX is not otherwise invoked, and another one to activate the TX pa
I've thought of doing away with the physical relay switching between TX & RX, by using a power transistor to activate the RX whenever TX is not otherwise invoked, and another one to activate the TX pa
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Ted
· #82814
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uBitx v 6.1 for sale
What else are you getting rid of? I'm looking for a 40m qrp box similar to the 4-States QRP Club Cyclone-40 or the NorCal 40, if that's a correct reference. Nice build you've got there on the V6. -Ted
What else are you getting rid of? I'm looking for a 40m qrp box similar to the 4-States QRP Club Cyclone-40 or the NorCal 40, if that's a correct reference. Nice build you've got there on the V6. -Ted
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Ted
· #82790
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Shielding volume / mic / tuner cables
A lot of pre-build testing involves two dangling wires and an eletret element hanging in air with no problems though it's easy to take some precautions for the long haul. I'd wrap the mic hi wire insi
A lot of pre-build testing involves two dangling wires and an eletret element hanging in air with no problems though it's easy to take some precautions for the long haul. I'd wrap the mic hi wire insi
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Ted
· #82540
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finished V5
If you're going to build one into an ammo can, won't the process be about the same? Only curious, not trying to be clever. I have thought of taking a v5 rig I made up for automotive use, but just not
If you're going to build one into an ammo can, won't the process be about the same? Only curious, not trying to be clever. I have thought of taking a v5 rig I made up for automotive use, but just not
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Ted
· #82492
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A suitable mic amp chip with ALC/Limiter
Is, I had played with the use of a MAX9814-based mic compressor as an AGC circuit, prior to learning about the ND6T-based boards and the commercial product available. Just remember that you're working
Is, I had played with the use of a MAX9814-based mic compressor as an AGC circuit, prior to learning about the ND6T-based boards and the commercial product available. Just remember that you're working
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Ted
· #82485
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A suitable mic amp chip with ALC/Limiter
Another approach - Get one of these, remove the mic element and lead that to your own mic input: https://www.ebay.com/itm/MAX9814-Electret-Microphone-Amplifier-Module-Auto-Gain-Control-AGC-for-Arduino
Another approach - Get one of these, remove the mic element and lead that to your own mic input: https://www.ebay.com/itm/MAX9814-Electret-Microphone-Amplifier-Module-Auto-Gain-Control-AGC-for-Arduino
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Ted
· #82475
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For sale: uBITX V.3
"Bonjour,Vous expédiez vers la France Merci Michel F1GTX" Michael asks if you are willing to ship to France?
"Bonjour,Vous expédiez vers la France Merci Michel F1GTX" Michael asks if you are willing to ship to France?
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Ted
· #82375
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nextion 3.5" wrong screen size
That may be my mess-up. While resizing some things, a feature or two that I don't use, may have lost itself in error. I'll revisit the files and resume learning. 73, Ted K3RTA
That may be my mess-up. While resizing some things, a feature or two that I don't use, may have lost itself in error. I'll revisit the files and resume learning. 73, Ted K3RTA
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Ted
· #82362
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Revamped I2C S-Meter for KD8CEC Firmware with Nextion.
#arduino
#fft
#firmware
#nextion
#smeter
Dennis, Thank you. It'll be a few days but I'm looking forward to trying this. 73. Ted
Dennis, Thank you. It'll be a few days but I'm looking forward to trying this. 73. Ted
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Ted
· #82361
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A way to Check the audio SSB frequency response of your microphone.
Your preference may differ; a slightly more high-ended audio response in TX can help with poor conditions, especially with lower-powered transmitters. That is, "broadcast" quality mic response isn't n
Your preference may differ; a slightly more high-ended audio response in TX can help with poor conditions, especially with lower-powered transmitters. That is, "broadcast" quality mic response isn't n
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Ted
· #81899
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Antuino
Jack, That is pretty simple. But then, so am I. As long as I now know that all of the other .ino files are good with being in the same folder as the main title .ino file, that will be fine. Thanks muc
Jack, That is pretty simple. But then, so am I. As long as I now know that all of the other .ino files are good with being in the same folder as the main title .ino file, that will be fine. Thanks muc
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Ted
· #81462
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Antuino
Yes, though there are 4 separate .ino files. That makes four separate folders that I'm happy to create but it still doesn't tell me which of them is the upgraded firmware. The only experience I have w
Yes, though there are 4 separate .ino files. That makes four separate folders that I'm happy to create but it still doesn't tell me which of them is the upgraded firmware. The only experience I have w
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Ted
· #81459
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Antuino
Thanks, Evan Now, I'm really dumb or something being as I don't do much in the programming end of things. Which file at https://github.com/afarhan/antuino2.2 is actually opened up as a sketch and then
Thanks, Evan Now, I'm really dumb or something being as I don't do much in the programming end of things. Which file at https://github.com/afarhan/antuino2.2 is actually opened up as a sketch and then
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Ted
· #81456
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Antuino
Where might I find the firmware upgrade for the Antuino? Tnx in advance, Ted
Where might I find the firmware upgrade for the Antuino? Tnx in advance, Ted
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Ted
· #81453
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Have an older Bitx40 to sell?
#bitx40
Scott, Mike, Emails sent. Thanks. Ted K3RTA
Scott, Mike, Emails sent. Thanks. Ted K3RTA
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Ted
· #81381
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Have an older Bitx40 to sell?
#bitx40
For a project, hoping to find an older model with 10-turn POT for tuning rather than a raduino (if i understand the lineage of the radio correctly). Anyone?
For a project, hoping to find an older model with 10-turn POT for tuning rather than a raduino (if i understand the lineage of the radio correctly). Anyone?
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Ted
· #81375
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Ubitx parts for sale or swap
Chris, I'd have to see what these other guys are looking for, first, on the extra board. If they dont want a lone board without trimmings, you're #3 on the extra board. See e-mail. -ted
Chris, I'd have to see what these other guys are looking for, first, on the extra board. If they dont want a lone board without trimmings, you're #3 on the extra board. See e-mail. -ted
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Ted
· #81190
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Ubitx parts for sale or swap
This V3 board is back on the sale block. The previously-interested person found something that doesn't require internatiinal shipping. I can throw in an external relay daughter board with this.Make an
This V3 board is back on the sale block. The previously-interested person found something that doesn't require internatiinal shipping. I can throw in an external relay daughter board with this.Make an
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Ted
· #81146
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What Happened To Versions 3, 4 and 5
I wouldn't mind some help making sense of the WSPR settings built-in, to give the box something to do when not reaching out for contacts myself. Call sign at yahoo.com works. Thank you. Ted K3RTA
I wouldn't mind some help making sense of the WSPR settings built-in, to give the box something to do when not reaching out for contacts myself. Call sign at yahoo.com works. Thank you. Ted K3RTA
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Ted
· #81106
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Ubitx parts for sale or swap
Dave, Feel free to send a private response to k3rta at yahoo \dot com. Your e-mail address doesn't show up in full. 73, Ted
Dave, Feel free to send a private response to k3rta at yahoo \dot com. Your e-mail address doesn't show up in full. 73, Ted
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Ted
· #81102
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