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The OEM sketch for the BitX40 has a provision where it starts jumping up or down to the next tuning segment when you reach one end or the other of the tuning pot. In between the tuning is limited to a

Hi, just after assembling I had the following symtom, after a vacation it worked for two days and now I have the symtom again: If I use a variable powersource my uBITX v5 (at least the Radiuno)

The legal requirement for in Germany is -40dB below carrier for the total power of all unwanted emissions added up. I've already done the L5, L7 mod, although I used würth inductors we had in the

The uBitx and its predecessor the Bix-40 are KITS! They are Educational kits, right to the core. Lessons are taught on the way to a usable 'rig' and then to one that not only works, but works WELL.

Press the tuning knob button and go to settings. Press agin to enable settings. Find the BFO and se freq to 11.9965 and see if that sounds good. You can set it to the best audio. Raj

Hi, I'm trying to reconstruct the raduino (DDS-VFO) for a BITX40. I used an arduino nano, a 16x2 display, a 10K multiturn potentiometer and a Si5351a card. All provisionally mounted on a breadboard.

HI; My ubitx V4 sound is very thin and low. I saw some kind of VFO alignment through the menus. Do loading the original configuration fix that, so it doesnt have to be done via display menu? Also,

The whole problem is that the final tx > BiDi amp picks up signal from the finals/relays and remixes them with carrier and creates a mess. Your problem could come from a not properly grounded case or

I tried to reproduce it, but was not able to. I forget what frequency I had my handheld on before. I will have to try again.

Hi Shep,. I had started a cad file to build a bitx40 chassis.? I? did n't finish a top.? I had the?front , bottom, and back panel. With both SO239 and BNC connectors for RF output.? Let me see if

DD2TH If you found the DF3FY reworked PA through ubitx.net there is also the following which apply to Version 3 &4. A higher B/W flatter response PA will amplify what ever is on it's input, both in

Mark, I was going to suggest that you send the extra 2 nanos to me. But, to share, send me 1 and send the other to a worthy ham. I have projects that I can try them with, LOL Wayne WA2YNE

OK, So?after some heavy study of many posts and comment on Ian’s CEC blog page, i found exactly my question: ....,,So this replaces earlier versions of the s-meter using the LM386 or LM358 chip??

I will second that http://amateurradiokits.in/ is a good place to buy cases, as well as some parts and kits. I saw, and bought, a board pair for a though hole BITX40. It consists of an exciter

Greetings All, I’v been following this topic and I think I understand the process much better. I am slowly making modifications to my V5 and just completed the kit-projects AGC, and connected the S

I'm not used to this mailing list stuff, I tried to treat it like reddit, sorry. Back to the topic: I feel so stupid. The Spurs *do* change when I tune. On 20m, the 3rd harmonic of the VFO (59 MHz *

I found that when I first started using my uBitx it showed up as using port COM3 on the PC. Then when I started using Xloader the com port suddenly changed to COM5. Worth having look at which COM

Yes thanks. I did try all different baud rates including 38400 with no success

Jerry, It's a long time since I've used uBITX Memory Manager, but as far as I remember the baud rate to use was 38.400. Give it a try and see if this helps. Armin, DJ2AG

My Ubitx v5 appears to working well now after initial tune-up.?I installed the CH340 USB-Serial device driver and then I used Xloader to install K8CEC v1.20 firmware (hex code for standard 16x2 P