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That would be sweet! Roy WA0YMH BITX20@...> wrote:

I have had OpenScad on my computer since I built my 3D printer 3 years ago (it was part of the software download package for the printer), and I never could make heads or tails of it. It's not very

Having a passing familiarity with the inner-workings of the FT-817, one of the problems with it is that its AGC is not well-designed. Unlike most AGCs, the time constant appears to be different for

There is a piece of software called OpenScad that is free. With it, you can import a .STL file (which is what is usually provided on Thingiverse), you can then 'subtract' cylinders (to make round

Out of curiosity, does anyone on this group play around with CAD software? I found a 3D printable box on Thingiverse ( BITX40 enclosure by Ik8yfw ) that was sized for the Bitx40 board, but it has

Mine too order date 12-25-2016 Sent from Yahoo Mail on Android

?All Right! ? Mine as shipped a well !!!! 73Don Frasher ? AD7LL

Mine shipped today. Woo-hoo! Hoping it arrives before the 17th, since that is when our ham radio club meets again and I am hoping to drum up some interest in the club for homebrew projects. Looking

I tested and getting 330 ohms. Receive current is 100ma no signal. Transmit is anywhere from 180 ma to almost one amp depending where RV 1 is set to

If the gate get too much +ve bias then the IRF will conduct too much current till it blows. Replace the final IRF and see. 73, Raj vu2zap

looks like I broke the transmit for my Bitx40. While adjusting the PA bias I increased the ma value probably to much. The driver Q14 not gets hot while in transmit and no temp change for Q15. The pa

Bill, While looking at the diagram again it occurred to me that if Q14 was shorted, the power supply would get 2.2 + 10 Ohm load and that would draw almost 1 amp from a 12V power supply. Please

If the final bias adjust preset is untouched then the IRF may have failed. Check the voltage on the left side gate pin of IRF (facing you) it should be a small value, I don't have my boards with me

Without speaking

From the diagram it is Red Brown Black. If your tuning movement is reverse then just interchange red and black! 73 Raj vu2zap

Everything you ever wanted to know about Huff & Puff stabilisers: http://hanssummers.com/huffpuff - there you will find a library of almost every article ever written about the Huff & Puff VFO,

Hi listening to If it all works fine and you're happy with it, that's fine. But just FYI... The 27MHz crystal in the QRP Labs Si5351A Synth kit usually oscillates between 27.003 and 27.005. I have

Looking from the front of the rig what are the correct pot connections - left to right. Red Brown Black or Black Brown Red? Thanks - Noel

Connections between the VFO and the Bitx are Clock 0, ground, the to the 2 pin connector next to the vfo coil approximately in the middle of the board. You have to remove the VFO coil as per

On my QRP-LABS DDS VFO, my correction came out to 27.010.5. So it was a matter of fiddling with it, and I was able to tune it in by listening to a known station frequency like East Cars, and