Jim Brown K9YC has long advocated reducing the TX EQ below 500 Hz or so in order to increase your effective communications power. Much of the rolloff depends on your microphone. I think the rolloff is not much (in support of those who want ESSB operation. On Dec 25, 2018, at 11:18 AM, Don Wilhelm wrote: I thought that I had seen actually measurements of the actual rolloff in the past and thought that someone might recall where there were.
#Essb audio for ssb pro#
The reason I ask is that when on-the-air testing of my new HyperX Cloud Pro headset there was not much change (none actually) noticed when I rolled 50Hz. I believe that the ESSB improvements also require a wider filter to be totally effective. But I have not taken the time or effort to attempt to measure it myself. The published curves ( ) suggest that there will be significant low end rolloff below 300 Hz. Settings but I don't recall ever seeing response specifications For the K3/K3S, I'm certain that ElecraftĪdjust the "carrier offset" to some degree for normal SSB and ESSB Low frequency roll off that started between 200 and 500 Hz (depending On the filter skirt (to improve carrier suppression) and accepted the In analog filter SSB designs, one typically set the carrier at -40 dB Of transmit audio response, one sideband would have less low end Symmetrical - they have steeper skirts on the high frequency side In fact, if you look closely at the response ofīoth the 27 Hz filters you will notice they are not In the K3/K3s that bandpass would primarily be In general, the "normal" passband for a 2.7 KHz SSB signal wouldīe 300 - 3000 Hz. (where the IF filter is placed relative to the carrier frequency). That there will be significant low end rolloff below 300 Hz.The actual low end is controlled by two parameters: the low cutįrequency in the DSP algorithm and the local oscillator frequency On 11:54 AM, Michael Blake via Elecraft wrote:
0 kommentar(er)
