Allards code needs you to choose the kind of keying you want. Perhaps, a back port of hus keyer will resolve this. We are waiting for him to get his hands on the ubitx...
On 22 Dec 2017 3:25 am, "Jerry Gaffke via Groups.Io" <jgaffke=[email protected]> wrote:
Allard's keyer is working quite well on the Raduino for the Bitx40v3, additional cost is $0.00 We have the two digital input pins available for dit and dah on the uBitx to get around the contact impedance issue. Straight-key can be a config change, or just close the key at power up.
A good enough op-amp based audio filter should be possible with a couple dollars worth of parts Plenty of examples in the amateur literature going back about 50 years.
A really good audio filter might go with a switched cap filter like the NESCAF, the chip required there is between $1.50 and $7 depending on which flavor, where, and how many. Clock it from a counter-timer on the Raduino. That chip plus $0.10 worth of C's and R's is about all you need, maybe a switch to select it. ? ??
Good fast QSK might be a bit more difficult to implement, but certainly possible. I'd prefer to go without the transmit-receive relays, examples of this for the Bitx40v3 have been presented
No, you don't need to double the price of the uBitx to use it for CW.
Jerry, KE7ER
On Thu, Dec 21, 2017 at 12:57 pm, Michael Babineau wrote:
The K1EL K16 keyer kit is only $20 and you can get a 1Khz / 300 Hz DSP audio filter module (pre-assembled) from SotaBeams for about $30 ... that is only $50 total.? You won't end up Ten-Tec QSK but it will still make a pretty decent little CW rig for < $200 total , which is hard to beat.?
