Re: QCX Firmware change request: Validate CAT frequency values. #qcx #firmware #cat

Arv Evans


Yes, it would probably need a few more bytes of memory to compare actual 
frequency with EEPROM stored "upper limit" and "lower limit" that could be 
a user entered semi-fixed variable.  Multi-band rigs could have upper and lower 
user settable limits for each band.

The 1602 display can store an additional 32 bytes of memory if you enable the 
R/W lead.


On Wed, Aug 12, 2020 at 12:51 PM jjpurdum via <> wrote:
That's still not cut-and-dried if out-of-band can vary among countries. The only alternative would be for Hans to offer specific 328 chips for each country for each band. That's a train just begging to leave the rails. I say this because, last I talked with Hans, he was down to less than 10 bytes of free memory.

Jcak, W8TEE

On Wednesday, August 12, 2020, 2:46:46 PM EDT, Arv Evans <arvid.evans@...> wrote:

Seems that all that is needed is for the QCX to inhibit keying for out-of-band 
frequencies.  This would leave it still able to listen to out-of-band stations.


On Wed, Aug 12, 2020 at 11:04 AM Sheldon Hartling <ve1gpy@...> wrote:
Not sure there is sufficient program space go support this and it varies by location.
For sure about sufficient space!  I've developed firmware and am painfully award of the challenges trying to "shoe horn" additional features into very limited space. 

Even a range check that looks for reasonable (course) values for the band without following the specific regional band plan would be a help.  Right now, I threw my QCX into a sputtering fit by entering "70201" instead of "7020" in N1MM+. ☺︎

Sheldon VE1GPY

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