[1000mp] 1000MP-MV Filter choice

[Jim Smith]

Hi Thomas,

If you are interested in cw contesting, I would suggest you consider the 
Inrad 250 Hz filters.  For over a year I have been using the stock 500 
Hz filter.  Finally broke down and bought an Inrad 250 Hz 8 Meg IF 
filter.  What a difference!  It was as if the bands were now twice as 
wide.  It is now much easier to separate signals and actually copy them. 
 Also much easier to find holes for running.  A bit hard on the guys 
right next to you with 500 Hz filters but we are talking about 
competitition.

Why 8 Mhz instead of 455 kHz if only buying one filter?  If your narrow 
filter is at 455 kHz then close in, strong signals that you can't even 
hear because they're just outside the passband will take over your AGC 
and make competitive contesting a really miserable experience.  An 8 MHz 
filter blocks those signals before they reach the AGC system.

The next thing I'm going to get (after the Force 12) is another 250 Hz 
filter, this one at 455 kHz.

Hope this helps, Thomas.

73 de Jim Smith    VE7FO