开云体育

The standard 8-way looms are colored per resistor code, 0 - 7. These correspond to pins 1 - 8 then 9 - 16. Smaller connectors similarly color 0? onward for numbers 1 up. I don't have a ubitx so I

Sorry, disregard. ubitx doesn't use the wiring looms. my bad ... :(

So I’ve actually done this… I used this SDR:? ?https://www.adafruit.com/product/1497? which tunes down to 24 MHz.? I tapped into the uBITx IF at TP14 on the rev4 schematic… before the 45 MHz

Holes in the corners for mounting… of course… ? *?* *Dr. William J. Schmidt - K9HZ*? ? *From:* [email protected] [mailto:[email protected]] *On Behalf Of* Nick VK4PLN *Sent:* Wednesday, May 30,

Hi, I only know about the CEC firmware. In that case it is the offset of the 25mhz crystal. The calibration number would be 0 if the 25mhz crystal was exactly correct. If you use the CEC uBITX

I'm constantly surprised at the interest in 10 meters. I always check 15. If its dead I go to 20. If it has anything on it I check 10 and hear nothing here in NC with a simple EFHW.. But 10 was a

I proudly display my Post bamboo slide rule along with the latest in Electronic and Radio engineering texts. The slide rule glass slide is cracked. Overheated during a physics final exam ;-) Mike

When setting the calibration, is the change from 0 absolute (based on the clock on the radiuno), or relative (based on the previous saved calibration? Or, if the calibration is set +1 for three

I have been working to keep the power transistors cooler.? Initally I added a 80mm fan to blow across the transistors and board.? When doing ft8 I would get significant heating of the power

If you have a dongle capable of direct sampling, or, an UpConverter you can tap the antenna between K1 and K3. This will give the dongle full bandwidth whereas KD8CEC's method presents only the IF

Its a bit confusing but the 5 pin connector which has yellow, orange, red, brown, and black wires is plugged into the connector on the bottom of the Raduino. This connector has 16 pins and only 5 are

Hi I could change it, but that would increase cost for end user, The LM324 are 50c the LM4562 are $5 each... Will there be a noticeable difference with a 700hz cw signal? 73

Nick looks great, and a good way to add mods to the uBITX would you consider a pair of LM4562s for the CW filter?...a little quieter, and would use the same R/C components BillK6SIK

Hi Everyone. I am working on a new board that will give a few extra features to stock uBitx. Its an Audio board providing easy access to Audio I/O pins. (add in your own AGC board, External

Yes, the pin numbering for the 16 pin Raduino connector? is swapped end-for-end on the Raduino schematic vs how it is shown on both versions of the uBitx schematic. That's unfortunate. In both

The schematic diagram for the "B? ubitx" board (base board for Arduino Nano, Si Labs oscillator, LCD...) has an error at the P3 connector, "OSCILLATORS." The pin numbers are in reverse order and thus

For the 3.5mm jacks, get a plug. Verify tip and ring connections by multimeter, plug it in and verify the socket's tabs. Simple, Simon :) 73 Dex, ZL2DEX

I think mine bottoms out at 52mhz but I can probably put the rf through the direct sample mod on the rtlsdr. I assume if I transmit that the RF is not going to go directly into the sdr as in the rf

I have not tried it,but from the circuit description the first conversion is at 45 MHz. I would try laying a short insulated wire near Q10. You may even be able to tap off the emitter of q12 with a

I noticed that the CEC firmware has an SDR mode but this seems to be where the audio as as well are transmitted to the SDR and handled there. Seems to be a good method for digital or recording but is