Best outboard filter to remove tuning-up carriers?

Don Buska dbuska at WI.RR.COM
Sun Oct 1 20:55:08 EDT 2006


Find a Radio Shack DSP-40.  Less frills than the Timewave units, but it 
works well and has an excellent Heterodyne filtering.  RS doesn't make 
them anymore, but they appear on eBay or hamfests all the time.  Can be 
had for $20-$30 normally.

I have two in the shack and use them often.  BTW RS closed them out at 
only $25 many years ago.


Don N9OO

kd4e wrote:
> What is the gathered wisdom as to the best
> external filter to remove tune-up carriers
> from LIDS who dump them on top of Nets and
> QSO's?
> I am familiar with the Timewave 599zx but
> that is a ton of money for features I do not
> need -- I'd like something that reliably kills
> tune-up carriers without the costly extra
> features.

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