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I just got my uBitX, and I plan to only do the longevity and reliability fixes before starting to use it. While reading up on them, I noticed some threads/pages about Raduino replacements involving

Noel, I would be interested in this also - Think it would make a great project -- KG5UMH Michael - DM93am

Love the Emtech ZM-2, it is my go to for 15w or less. I also use the older version of the Z-11 LDG (LDG QRP) and it works pretty good. After looking at the 4-State tuner if you are a new builder it

Nik, Agree with Lawrence here as I had feedback issues too on the higher frequency bands. I could minimise the feedback by using a better shielded microphone, but the issue would still be there on

Henning, I used 40db of padding between the ubitx and the SA, 30db in an external pad and 10db inside the SA. Based on this the total power output of the ubitx was 10watts average, 5watts in each of

I should add that it would also be a lot of work! You could combine the graphics with some theory and make an ebook or YouTube. And charge for an ebook, like SAMS did. One of the author guys maybe.

As promised, I uploaded the description of the simple VOX interface ( /g/BITX20/files/BitX%20Digital%20Interface.pdf ) between my PC and the BitX-40 that I've been using for FT-8. I

I prefer the Weller soldering station ... But I think that would be a fantastic idea. If I understand correctly. Like the old SAMS schematic series.? For a constant tone mic input interface circuit

I think that is a good choice. I like the Emtech ZM-2 one better as it has air variables whereas the 4SQRP one uses poly variables. I am old fashioned and just like the larger "tougher" air

Tim, this is a nice measurement- At which output power did You take the measurement? What is the attenauation of the power attenuator between the output of the uBITX and the Input of the spectrum

Looks good Nelson. I do like that speaker grill....The pic of your test bench is...um...awesome! (as Steve asks himself- "what does all that stuff DO??") Aloha,

The radio is sold. Thanks everyone.

For those wondering how the -3dbm levels for the each of the tones comes out to a total of 10 watt output. 10*log(10000) = 10*log(10**4) = 40db An output of 5 watts per tone going into 40db of

Just received number 546/3 with the dreaded WX op amp. It's for sale for $109 postage paid any where in USA. Brand new and untouched. Prefer paypal. If interested please contact me off line. w7zim

Hello Lee I don't have an oscilloscope so I can't give you values. But I can say is that it is not critical. When I had it all the way up I was told, when I asked, that the voice was "quite readable

Ran bitx40 with duinovox for several months until laptop hard drive crash. It works great. 50 states worked with 46? confirmed and 49 countries with 35 confirmed.

I just started using the BitX-40 for FT-8. I'm using a homebrew VOX gimmick to key it. I need to clean up the documentation a little then I'll publish it here. Hopefully by tomorrow.? In only 4 days

Yes, no SHOUTING! The IC is Tiny, might be tough to mount for some. Here is the PCB schematic of a small PCB. Fits in the Mic case. 73's MIKE -- Mike Hagen, WA6ISP 10917 Bryant Street Yucaipa,

Did you mean perhaps you were using a easydigi?

May I have some opinions about using a BITx40 on data modes? ?I am just venturing into qrp after being a 100 watts and a wire man for many years. ?I will be ordering a kit very soon but because of