I've just checked my K3 and DM780, I have the 6 KHz "AM" filter. The bandwidth appears to go to 4 KHz on the ESSB menu setting, but in fact the waterfall in DM780 only shows audio out to 3.5 KHz bandwidth on receive. I can move the centre frequency of the DSP filter to 2 KHz (normally it is 1.5 KHz) which sorts out the HF end showing on the LO and HI settings 0.00 and 4.00 respectively. The 3.5 KHz bandwidth looks to be fairly easy.
You might like to check with Lyle, KK7P, as to whether 4 KHz is something that can be incorporated in later firmware without needing to resort to shifting the centre frequency. I've not tried transmitting with ESSB/data mode settings. 73 Dave, G4AON K3/100 #80 f/w 3.03 -------------------------------------- I presently operate my K2/100 in PSK31 data mode with a 2.8 kHz wide waterfall on the DM780 Superbrowser. I can click and transmit from about 600 Hz to about 1600 Hz on the Superbrowser waterfall without too much attenuation of the transmitted signal. I made this determination using a field strength meter and also in-line watt meter. I would like to run a 3.5 kHz wide waterfall and be able to click and transmit in the full width. Does anyone have experience using the K3 in this way with ESSB and the 6 kHz roofing filter? In my reading of the K3 manual it seems that this would be possible. Thanks and 73's Bill Strong WA5KPE ______________________________________________________________ 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
