[1000mp] Sherwood Engineering IMD for Inrad Mod

Bill Tippett btippett at alum.mit.edu
Fri Oct 8 10:33:43 EDT 2004


VE7AG:

 >Can't wait to see the roofing filter results and the ft9000!!

         Looks like Sherwood has added Inrad's FT-1000MP roofing filter
results to his page below (scroll down to 77 dB in second from right
column).  Although there are several minor inconsistencies in
the results for some rigs posted here versus the previous .pdf
table, I suspect the new Inrad mod data is OK.  The 8 dB
improvement from 69 dB to 77 dB at 2 khz is certainly worthwhile.

http://www.sherweng.com/table.html

                                         73,  Bill  W4ZV

P.S.  I would not hold my breath believing the FT 9000 DX will
be significantly better than the IC-7800 or MP with Inrad mod...
the reason being that it uses a 3 kHz filter vs the IC-7800's
6 kHz and Inrad's 4 kHz filters.  It should not be significantly
different at 2 kHz and closer spacings, all other things being equal.




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