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You a decent heatsink. I could post pictures of what I have for a setup of you'd like. Also, replace those 25vdc caps or they will make nice foreworks. I replaced them with a set of 200vdc caps cause

No, you should be watching the 25V cap on the PA power line fly across the room. Vince. -- Michigan VHF Corp. http://www.nobucks.net/ http://www.CDupe.com/ http://www.metalworkingfun.com

I'm referring to the Raduino replacement card. It uses no resistors for the CW key inputs.

Note that a cached version of your web page includes information about CW but the current version does not. Kevin/K5KDT

Just got my latest uBITX in from HF SIgnals yesterday (5/15/2018).? I will not be using the original Raduino card with the original display that shipped with it so I have a totally brand new,

Has anyone yet derived a way to create a low power and a 'higher' power mode while keeping the necessary power transistors bias where they should be? One scenario I want to use my uBitX in, is for

Thanks for the info. Looks like an easy way to bring the ubitx up a notch!! Joe VE1BWV robert_kross@...> wrote:

I would like to run the IRF510 in the BITX40 at 36 volts. If I do this should I be measuring about 40-45 watts output power? Are there components that I need to change out besides going to a bigger

Burned main board. I was a little eager when I was hooked on the battery and I connected the battery wrong with the plus and minus cable ... ? Has anyone done something similar and managed to solve

Ashhar, etal., Finished the uBITX and it works great.? Thank you for developing such an economical all band transceiver.? Much like the classic Heathkit HW-8, this will be the subject of many many

Good Afternoon, Finally received and housed my ubitx. On receiving the PCB, I replaced the IRF 510 outputs with IRF 530's. These tend to run a little cooler and are just as inexpensive. I tested the

Interestingly enough, the illustration does not show an IDC connector but an cable with crimped, inserted contacts.? IDC connectors are usually two row because the ribbon cable conductors are on

I would echo the positive news story - getting my uBitx up and running on Saturday and setting up only took an evening, the 'poor audio quality' turned out to be the BFO frequency being off - easy to

If calibration were done as described here: ? ??/g/BITX20/message/35235 then it's a one step process. Code to tune the rig should properly center the signal in both crystal

Ha! The HW – 100 that we used were calibrated only to 5 kHz, and I have seen errors of Thirty KiloHertz on some of the ones I have renovated. My sb-102 was calibrated at 1 kHz. When I saw this rig

The jury is still out on how best to get more transmit power on the high bands. Here's a couple threads on that: ? ??/g/BITX20/message/46616 ?

Jerry: Thank you! That did the trick. 73 N4AYE

I used wire-wrap. A dedicated stranded-conductor cable would last longer, but both ways work.

The technique using WWV is more than good enough if you keep one thing in mind. The mater osc referenced to the crystal osc is the source for the HFOm IFLO and BFO so they all move if the master OSC?

My wife had watched me carefully collecting (inexpensive) parts to build a uBitX over many months. When she heard about Ash’s ‘elves are busy’ post,she game me the $$$ to buy one. It’s been