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RP Pico 2
All: I just read that the RP Pico 2 is now capable of running at 200MHz, up from 133MHz earlier. Using CMake, the new speed setting in the compiler is a symbolic constant:
By jjpurdum · #32974 ·
V66.4 Calibration Instructions
Here is a revised version of the V66.4 calibration PDF. Al AC8GY
By Albert Peter · #32973 ·
Re: T41 V66.4 with Code Revisions
Thanks Albert, SDT66_3 was the first build of the code that actually worked properly for me, appreciate all the hard work from yourself, Jack, Bill, Oliver and the others who have contributed to the
By Peter McCracken EI3JCB · #32972 ·
T41 V66.4 with Code Revisions
Hi Everyone, Had some good feedback on the versions 66.1 and 66.3. The attached update fixes the known problems. Fixes include issues with the SSB transmit cal and power levels, which were caused
By Albert Peter · #32971 ·
Re: T41 SDT Version 66 with Calibration
With 1kHz from a signal generator into the audio hat and the radio in TX mode I'm not seeing any IQ output from the hat. The three clocks seem to be present although I'm not sure what frequency they
By bty84827531 · #32970 ·
Re: slow starting on T41 kit
Good news, checked again tonight and I didn't get any error messages. The problem happened on my home desktop and my work Windows 7Pro laptop, thankfully I'm not having any problems now. When it did
By Ron VE8RT · #32969 ·
Re: T41 SDT Version 66 with Calibration
I also get no audio out with audio generator to audio hat. I also get no output on cw so maybe I have something else wrong dave, n3ds
By D Solt · #32968 ·
Re: T41 SDT Version 66 with Calibration
I did a quick five minute test (it¡¯s late here) with an audio signal generator and likewise got no TX output. Roger G8JWT
By bty84827531 · #32967 ·
Re: T41 SDT Version 66 with Calibration
Hi Al, Tried your suggestion regarding the tone using Ver066_3. Applied a 1K tone to the mike jack, keyed the PTT no audio. Audio into the audio card but nothing coming out on the scope. Tried with a
By Rick Price · #32966 ·
Re: slow starting on T41 kit
*** That's probably because they belong to Bill K9HZ. There are boards that he designed that have become de facto standards for V12. I think - his PA, his LPF, his LPF control card, his BPF. Those
By jerry-KF6VB · #32965 ·
Re: T41 SDT Version 66 with Calibration
Hi Al, Thanks for clarifying the need for the user supplied audio tone during xmit IQ cal. I will give that a try and report back. Rick, KN4AIE ________________________________ Sent: Thursday,
By Rick Price · #32964 ·
Re: T41 BPF 6m confusion
Bob, Attached is a report showing what I did on 6M. See the chart on pg 2. dave, n3ds [email protected]> wrote:
By D Solt · #32963 ·
Re: T41 SDT Version 66 with Calibration
To Everyone having problems with SSB calibration, especially SSB PA power. I did not make it very clear that a signal must be applied to the Mic jack. I will emphasize this in the final version of the
By Albert Peter · #32962 ·
Re: T41 SDT Version 66.3 with Calibration
Al, 66.3 seems to have improved the button response but hasn't cured TX calibrate issue. All I can see on my spectrum analyser is a very low level carrier around -90dBm. Roger G8JWT
By bty84827531 · #32961 ·
T41 BPF 6m confusion
I started to wind the coils for the 6m band and am confused about L601, L603, and L605. The directions say L601 and L605 are 39nH, 5" 24AWG, 5 turns on a 1/8" drill bit. However, L603 is 24nH, 4"
By Robert Luken W3RDL · #32960 ·
Re: slow starting on T41 kit
I can view and down load PDF's fine. I think some of the V12 Schematics in PDF format are missing from Git Hub though. Tim W4YN
By Tim · #32959 ·
Re: slow starting on T41 kit
Whose PDFs and from where? The fact that there don't seem to be others with the problem, perhaps your viewer isn't working correctly. Can you view PDFs from other sources? Jack, W8TEE
By jjpurdum · #32958 ·
Re: slow starting on T41 kit
Over the last couple of days I've made attempts to view the .pdf files, both on my Ubuntu desktop and a Win& laptop at work.? The .pdf are not working, instead I have this message: Unable to render
By Ron VE8RT · #32957 ·
Re: slow starting on T41 kit
Actually you can mix and match the earlier version boards with the newer versions¡­ check the upgrade paths on my GITHUB here: T41/T41_Upgrade_Paths at main ¡¤ DRWJSCHMIDT/T41
By K9HZ · #32956 ·
Re: T41 SDT Version 66.3 with Calibration
Hi Al, Tried your latest release 066-3 and still cannot get IQ xmit cal to work. RF is a little better but no tone or very low. Thinking I might have a problem I loaded in a release from 01-07-25,
By Rick Price · #32955 ·