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Date
Re: Audio feedback during transmit? #ubitx
Excellent solution, does it also remove the thump?
By iz oos · #52402 ·
Re: Nextion Displays >> warning
Ade You will be interested to see that I now have my 3.5" Nextion Standard screen working.?? Just needs to be installed properly in the front panel. The hard work in upscaling graphics and
By Mike Woods · #52401 ·
Re: Homebrew from scratch #ubitx
I am also working on a similar model of Modular approach. But I am working on a concept of Plug-in modules. I have already created some of the modules which when ready will be plugged in a Base
By Charudatt Uplap · #52400 ·
Re: Nextion Displays >> warning
Mike, many thanks for answering my question and in great detail. I think I have some playing around to do. At least it will keep me out of mischief.? 73 Ade M0OJR
By adelolly07@... · #52399 ·
Re: Low RX Audio #ubitx
Check the obvious first. From the antenna input to the audio. So check first the stage from the antenna connector to the lowpass filter.
By iz oos · #52398 ·
Re: Nextion Displays >> warning
Somebody has already resized the graphics for the 3.2 inch version (by upsaling the 320x240 images.?? But so far, no other versions are available.? I imagine a number of other sizes will become
By Mike Woods · #52397 ·
Re: Nextion Displays >> warning
This may be a silly question folks, but will Ian¡¯s files work ok on the 3.2 inch version? ?Ade M0OJR
By adelolly07@... · #52396 ·
Re: Nextion Displays >> warning
Joe I'd be interested in what you will do with all that real estate on the 7"! Mike ZL1AXG
By Mike Woods · #52395 ·
Re: Homebrew from scratch #ubitx
uBITx v5 (although it may cost a bit more with all those extra connectors) M -- Mike Woods mhwoods@...
By Mike Woods · #52394 ·
Re: VOM Advice?
Oh there's no doubt that as a disposable meter, they're fantastic. When I needed one the other day to help figure out what was going on with my daughters car, I hooked one up to a 12v accessory plug
By Ryan Flowers · #52393 ·
Re: RF power chain mods and improvements..
Take a look at this post:? ?/g/BITX20/message/51448 where Allison suggests replacing all three of Q20,21,22 on the transmit side.? A bit surprising, but then we need a fair bit of
By Jerry Gaffke · #52392 ·
Re: Microscope - - new thread
I've found this to be very handy for the
By Dennis · #52391 ·
Re: RF power chain mods and improvements..
I might try using the MMBTH10 here too,? I have quiet a few of them... Which 3904 would we replace? Cheers.
By Nick VK4PP · #52390 ·
Re: RF power chain mods and improvements..
OK, you guys are getting serious. I'm moving the discussion back into the power chain thread so I can find stuff later.? In post? ??/g/BITX20/message/51743? ?Allison mentioned
By Jerry Gaffke · #52389 ·
Re: Nextion Display vs 1602 LCD - Current Consumption #ubitx
I had perhaps indicated that i generally tie the backlit of 16*2 to unregulated supply by increasing the series resistor. regards sarma vu3zmv Regards MVS Sarma jjpurdum@...>
By MVS Sarma · #52388 ·
Re: Low RX Audio #ubitx
Ok. Using the output of a dds generator and different attenuator blocks, to get the same audio out at 10m had to reduce att by 20db compared to 40m. So what section should I start looking for the
By WP3DN · #52387 ·
Re: LA4425a Audio power IC
We're using the 7W TDA7266M chip and are pretty happy with its performance. Jack, W8TEE
By Jack Purdum <jjpurdum@...> · #52386 ·
Audio Amplifier Module with Digital Gain Control
Hi: I've built a few BITX rigs from scratch now and I'm starting to move to a modular approach using fabricated PCBs to make it easier/faster to build/mix/match the stages.? My audio amplifier
By Bruce MacKinnon KC1FSZ · #52385 ·
Re: Topic change
I tried a BFR93a (because i had some) for Q90 which seems to work OK.? glenn vk3pe
By Glenn · #52384 ·
Re: LA4425a Audio power IC
Hi Roxie, I have used the LA4425 AF amp in a home-brew transceiver, not the uBITX. It's a very simple part to use and seems to work very well. Very few parts required around it. Just being cautious I
By Glenn · #52383 ·