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Mike - I can confirm that the address is 55 hex.? I used the Si Lab part number look-up, and the I2C address scanner routine.? This is the specific part:

The vfo is drifting due to heating. The heat on the board is coming from the predriver, driver and the vfo output stage. If you replace the 2n3904 from smd to leaded, it will make the board run

the front end diodes in the mixer will clamp any signal higher than half a volt. this should take care of the very powerful signals. adding diodes at the open front end can lead to a very large number

There is nothing Ash can do, he showed a Photo of a big lineup of assembled PCBs a week ago,? he had no idea they would all be sold so quickly. Some have got PayPal notices that they have been

Welcome! Latest Raduino sketch is found here: https://github.com/afarhan/bitx40 Share some pics of your build! Always helpful to see how different people are solving the same problems -David KM4NKU

Andy,? First off, take a look at pages 32 and 33 of the Si570 datasheet: ? ??https://www.silabs.com/documents/public/data-sheets/si570.pdf There are many variants. The primary things to worry

Hello everyone. Just finished my BITX40 and performed some mods. Quite happy with the rig. The receiver is hot and the transmit SSB out seems to be very good. Worked many contacts on 40 with only a

We already have a group that covers all of the BitX units. I have enough email without joining another group. I am against starting another group. My comments and suggestions will be found on this

The cutoff was several days ago, Ron. It was announced on this group, if you read back a few days.

Well, as someone who just ordered the uBITX yesterday morning, and who just joined the group this afternoon, it would be helpful to know when the cutoff is or was. I would hate to find out now that

I got a further message from Paypal to tell me that the kit had been dispatched, and giving me the India Post tracking Number 73 de Charlie GI4FUE Sent: 12 December 2017 21:14 To: [email protected]

I have made several signal generators with 2 different PCBs I designed.? Both stand-alone with level shifting. The big one uses the SI part with 8 Clocks, I call it "Lotsa Clocks".? It has optional

Look at the date/time the post/note was sent. Did you order before that date and time? If yes then you are in the que. If no then you are on B/O. My Bitx 40 has been a fun project and a great little

That makes a bunch of us.

Same question here. Greg, KC8HXO

Many of the newer members to this group are posting questions that have already been asked and answered. If you want to do further research into a specific topic it might be interesting to log into

David : The switch controls ?a SotaBeams DSP audio filter module. I have the General Purpose one installed which has a 2.4 Khz SSB filter (WIDE) and a 300 Hz CW filter (Narrow). The switch is

How do we know if we're on backorder or not? I didn't receive any confirmation of the order but I do see the order in PayPal.. Dan -- KB9JLO

I agree, I just joined this email list due to the uBITX Jeff KE8BLW

Not there. Good to add two back-to-back 1n4148's from relay K1 pin 12 to ground to limit the AC voltage at the base of Q90 if the uBitx should ever be plugged into an antenna while some 100W