[SFDXA] Do you know where your sidebands are?

[Bill]

 From the ARRL Contest Update:

"WORD TO THE WISE

Do you know where your sidebands are? Make sure you keep all of your 
signal inside the band and inside the band segment for phone!

*/Band segments/* - guess what, the US phone band on 40 meters stops at 
7125 kHz but you can't set your radio's displayed frequency there! Why 
not? On LSB, your sidebands extend /below/ the carrier frequency shown 
by your radio and you have to keep them above the segment's edge, as 
well. With a well-adjusted rig, you can probably operate as low as 
7127.5 kHz but don't push it! And remember to double-check your transmit 
frequency when calling a station operating split outside the U.S. phone 
band. That practice is quite common on the crowded 40 meter band: there 
may be a QSO in progress on that frequency and some U.S. hams have been 
known to forget and call DX stations on /their/ transmit frequency. Oopsie!"

Note: While this talks about the bottom edge for Advanced and Extra on 
40, the same applies where the edges are for your class of license. And 
on USB watch the upper edges.