Re: v4 Setup issue
开云体育
Hi Mark, is the KD8CEC V2 available now. ?? Have the original V1 version here. Using my V6 ubitx..? Great idea using an external 10 mhz ref for frequency calibration. My standard here has been the Russian RWM tine signal on 9996 khz, but varies in signal strength
at times. Great work Mark.
Art G3XNE
From: [email protected] <[email protected]> on behalf of Mark Hatch <mark2382@...>
Sent: 25 May 2023 13:56 To: [email protected] <[email protected]> Subject: Re: [BITX20] v4 Setup issue ?
In terms of frequency calibration (i.e. MASTER_CAL) in the code, I am really sold on beating against an external OCXO source such as:
This runs on a 9v battery, and I (probably should have an attenuator, but dont) connect it to directly to the antenna input. I bet you could use the Han's? ProgRock to do the same thing if you are DYI-er Set the VFO to 10mhz and the zero beat is so? clear. Silence during the 100hz. Then choose the middle of the "silent" range and calculate the Master Cal and you are done.? When I save and reboot, turn to 10mhz, WWV is clear as a bell right on 10mhz.? With the "Calibration Wizard" that is coming in the final uBITX Settings Editor, along with the HF signals BFO tuning aid, can calibrate an uBITX in 5 minutes.? BTW: to brag a little, couple screen shots (imagine you are watching the HF Signals Tuning Aid while doing the BFO adjustment...The Master Cal value is calculated automatically. (Unfortunately, I had to add several CAT commands to KD8CEC to allow me to read and store the calibration values, so this will only work with the upcoming KD8CEC V2.) 73 Mark -- AJ6CU KD8CEC 2.0, Nextion Screens,? and open source uBITX Raduino boards for Arduino IOT, BLE, RP2040, Teensy 4.0, and Raspberry Pi Pico https://github.com/aj6cu |