The P3 display shows the "carrier (dial) frequency" as a vertical line and the audio (filter) bandwidth as the boarder bar. In USB/LSB the filter bandwidth is typically something like 200 Hz to 2900 Hz (for a 2.7 KHz "width").
If you have selected shift/width instead of Lo/Hi, adjusting "width" will reduce the bandwidth equally above and below the center frequency (typically 1500 Hz). Thus if you select "width" = 2.1 KHz the filter will be 500 - 2600 Hz and you will see 500 Hz between the vertical line (carrier/dial) and the actual filter response. 73, ... Joe, W4TV On 11/2/2013 4:28 PM, [email protected] wrote:
Hi, I have a question concerning what you see on the P3 when you tune in a USB signal. The green band that represents the bandwidth is not quite at the tuned in frequency (center frequency) but is displaced slight higher in frequency. If you lower the bandwidth say using a 2.1 KHz filter it has shifted quite a bit up. Can someone explain what is happening from the radio point of view please? Thanks, Tom VA2FSQ ______________________________________________________________ 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
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