¿ªÔÆÌåÓý

Date
Re: Current Firmware
Dennis: For the Win 7 machine, unpack the ZIP file into a temporary directory. With the Arduino IDE (or a text editor), open each INO file until you find the one that holds both the setup() and loop()
By Jack Purdum <jjpurdum@...> · #51513 ·
Re: RF power chain mods and improvements..
Hi atouk, I had the same thought. Make the UBITX as clean as possible with fairly even power across the bands say at 10 watts. Create an amplifier supplying about 50+ watts and small as possible.
By Dennis · #51512 ·
Re: #bitx40 - CW Side Tone Wiring #bitx40
Try clamping the mic on TX. No room audio. De-thump should still work. (Theoretical :-) ). de ZL2DEX
By Dexter N Muir · #51511 ·
Re: Current Firmware
Hi Armin, 1. The file I used from Gary was an ino file. (he also sent along a hex file, but I couldn't get ArduinoBuilder to work) 2. I originally used the zip file from Github - this file contained
By Dennis · #51510 ·
Upgrading ubitx firmware query #firmware #ft8 #ubitx
I want upgrade the firmware of ubitx from stock one particularly for ft8 ( ptt over usb). Some one told me that upgrading firmware associated and followed with recalibration of raduino. Any expert
By Praba Karan · #51509 ·
Re: The new uBITX boards are here
Thank you, Raj
By Rusdi Lee · #51508 ·
Re: Removing surface mounted resistor #ubitx
I found some tips for my Hakko iron that are wide with a square notch in the end that straddles the part and melts both sides at once.
By Norm. N7NSD · #51507 ·
Re: RF power chain mods and improvements..
With the amount of rework and component changes on the board to get higher power, wouldn't a better strategy be to get the cleanest output possible, and spend the time designing an external PA that
By atouk · #51506 ·
Re: UBITX. FT8 heat sink requirements #ft8 #ubitx
I too don't note much heat on them but the little 3904s sure heat up.? I did put one of the tiny Raspberry pi 5v fans with a dropping resistor to give them a little air. You have to add a 7805
By Bo Barry <bobarr@...> · #51505 ·
Re: ubitx & case #ubitx
But unfortunately he's 2000 miles away and I can't help him . ?. ?He is a great QRP lifelong ham too!
By Bo Barry <bobarr@...> · #51504 ·
Re: Github's future?
Microsoft has done a good job with Minecraft after buying it from Mojang. I¡¯m keeping an open mind.
By bobolink · #51503 ·
Re: RF power chain mods and improvements..
One comment on higher power... The T30-6 toroids are way to small for more than 10W.? So all the low pass filters in the corner wold require revisiting. Most people at 10W use T37-2 or t37-6 and
By ajparent1/kb1gmx · #51502 ·
Re: RF power chain mods and improvements..
Jerry, I can post in 18 point type if need be.? Why so large in you posting? The 2n2369A smt has a suffix and I'd have to look it up.? Last time I ordered it it was 4 years ago. That is what
By ajparent1/kb1gmx · #51501 ·
Re: ND6T AGC question
Mike, I'm glad you posted this because I hadn't thought of it before.? I put a 6V regulator in the supply line for the audio amp.? The regulator cost 29 cents, so that could be a good way to power
By Daniel Conklin <danconklin2@...> · #51500 ·
Re: ubitx & case #ubitx
That's a shame because there are really no changes necessary.? Just put it together correctly and it will work
By Daniel Conklin <danconklin2@...> · #51499 ·
Re: UBITX. FT8 heat sink requirements #ft8 #ubitx
I don't want to become famous for this, but I accidentally ran a WSPR transmission on 40 M without the antenna connected.? My PS is 12V.? I don't know what the current draw is.? The heatsinks are
By Arvo W0VRA · #51498 ·
Re: Building homebrew ubitx: Need pre-v3 schematic PDF. Also, source for 45M15 (45 MHz IF) filter?
49.152 MHz crystals can be obtained in fundamental mode (mostly in SMD package; 5x7mm is not too difficult to work with, but smaller packages certainly are), however, check datasheets carefully and
By David Feldman · #51497 ·
Re: RF power chain mods and improvements..
tim, I think it would be ok but I have not tested. Try it and let us know.? I didn't get to that. Allison
By ajparent1/kb1gmx · #51496 ·
Re: RF power chain mods and improvements..
Skip D used printed shcematic and the print is about.01 high.? Oops, it is T9 collector of Q90. Allison
By ajparent1/kb1gmx · #51495 ·
Re: RF power chain mods and improvements..
Thanks Allison.. stupid me i simply did not think before i asked?, i am not young any more and it is very hot in denmark right now and it was also a lot?easier if someone knew Vy 73 De OZ1LQB /
By oz1lqb@... · #51494 ·