The significant spur is generated in the last mixer where 45mhz IF on one port, 73mhz lo,
and the signal at 28mhz out plus 17mhz spur.? The spur at low levels tracks both the tuning?
and the drive level, no drive no significant signal (in the Spec-A? noise about -100DBM).
The other is a side result of 11.995(+-) leaking.? That guy is there but very weak
and well below the level of concern.
Allison
