Luigi, The switch between HF and TRN band decoding is determined by the state of DIGOUT0 (ACC pin 6) - see the 2nd column of page 19 in the manual. Add a pullup to this line and use it to steer which band decoder chip is selected.
73, Don W3FPR On 11/17/2010 12:21 PM, Luigi Casari wrote: > Regards to all > I am building an interface to decode the present signals on the Band0-Band3 > output. > This using an IC CD4067BE, the intention is to have a positive tension on > the various bands (for switch some rx preampl. or switch some antennas), a > general PTT for the HF band and a PTT for the 50MHz. > On the 144MHz I need a PTT and a +12V on RX for the external preamplifier. > > I have the K144XV module and I have too the PR6 preamplifier for the 50 MHz. > > So the DIGIOUT1 signal is already used for the preamplifier, the question is > as know when the K3 is on the 144MHZ seen that the BAND0 to BAND3 goes to 0V > and this is the same condition used for 60m band. > > It is not possible to use TRN1-TRN9 because even they go out on the same > pinof the BAND3 to 0 and they have address used in HF. > > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
