Kees,
>>>All this data is off "Elsie" and not measured.
Even if using the existing 20/17 LPF "as is" on 15m, the 15m signals are ~0.5dB down and the 23.xx MHz spur is 6-7dB down vs 0 dB down on the 15/12/10 LPF. You can sharpen up the original LPF and get that 23.xx Mhz spur down to 15dB down or anything in between.<<<
This is to be clear:
Spur production is relative to the current dial frequency and moves according to it.
So it is likely not needed to worry about the 23mhz spur because if you are on 12 or 10M the spurs
we are trying to kill is 20mhz and down.
The 23Mhz spur occurs when one is on 15M.
Allison
