[Elecraft] Roofing Filter question

[Joe Planisky]

I would echo the other responses that you may well not need any  
narrower roofing filters.  You might try using just the stock 2.7 kHz  
filter for a while and see how it goes.  I recently added the 400 Hz  
filter and so far, it makes virtually no difference EXCEPT in the case  
where there's a strong signal within +/- 1 kHz or so of the station  
I'm trying to work.  Note that a "strong signal" might be another ham  
station, a broadcast station, RFI, etc.

If you're interested in listening to shortwave or AM broadcast  
stations on your K3, then you might consider the 6 kHz (AM) or 13 kHz  
(FM) filters.  Of course, you'll also need those filters if you intend  
to operate those modes.

There's a good article on the Elecraft web site about roofing  
filters.  Check out http://www.elecraft.com/K3/Roofing_Filters.htm

73
--
Joe KB8AP

On Dec 18, 2008, at 6:03 AM, Mike, W9QS wrote:

> I have a K3/10 on order.  I have used my K2 for over a year and find  
> the filters to be very good.  I operate 90% on the time on QRP CW.   
> I'm looking for opinions on which roofing filters I might include.