Watching both waterfalls at the same time, it appears that when it transmits the noise stops. Those breaks you see on spectran appear to happen when it is transmitting.
To be completely fair my 144MHz antenna is likely much longer than anything anyone else will be using. The gain of my yagi is high enough that I can bounce my signal off the moon, so this may not be an issue for the average person, but it is a slight concern to me. If I have to I will move it to a completely shielded enclosure. I knew that this sort of thing may be a possibility when I decided to build one.
To be completely fair my 144MHz antenna is likely much longer than anything anyone else will be using. The gain of my yagi is high enough that I can bounce my signal off the moon, so this may not be an issue for the average person, but it is a slight concern to me. If I have to I will move it to a completely shielded enclosure. I knew that this sort of thing may be a possibility when I decided to build one.