I use the 8 pole Xtal filter, and love it for CW... You are in for such a treat once you get your K3 going on CW... The rig is a wet dream for CW ops. -- Thanks and 73's, For equipment, and software setups and reviews see: www.nk7z.net for MixW support see; http://groups.yahoo.com/neo/groups/mixw/info for Dopplergram information see: http://groups.yahoo.com/neo/groups/dopplergram/info for MM-SSTV see: http://groups.yahoo.com/neo/groups/MM-SSTV/info
On Tue, 2015-01-20 at 23:17 -0500, Bill Coleman wrote: > > On Jan 13, 2015, at 10:52 PM, Mike Zbrozek <[email protected]> wrote: > > > > As a cw opr that is planning on buying a K3 next month I would > > like to know how many cw ops use/prefer 5 or 8 pole cw filters? > > Does anybody use the 1000 Hz 8 pole filter for hunting cq's then > > switch over to a 500 or 400 Hz filter? And how many cw ops use a sharper > > 200 or 250 Hz filter? > > > > Tnx in Advance > > > > Mike Zbrozek, K8XF > > I’m going to buck the trend a little bit. I only have one 8-pole filter — the > 13 kHz FM filter. > > I see posts from a lot of guys who have a radio full of 8-pole filters. > That’s nice — if you can afford it. Those filters are expensive. > > During the five years I spent dreaming of owning a K3, I had thought I only > wanted to have the 8-pole filters. However, my wife (the best XYL ever!) > ordered a very stock K3 for me for Christmas, and it came with the 2700 Hz > (5-pole) filter. Swapping out this filter after the fact for the 2800 > (8-pole) filter is even more expensive than ordering it in the first place. > > Because of the expense, I used the stock filter for about six months before > contemplating anything. I bought the 13 kHz filter because it gave me FM and > AM receive and transmit capability. I got the 500 Hz (5-pole) filter because > someone offered it on this list at a greatly discounted price. > > The key thing to remember about the K3 is that the DSP IS your filter! You > don’t have to buy any of those expensive crystal filters. PERIOD. The radio > works great with just the stock filter. > > Do the expensive crystal filters make a difference? Yes. The 500 Hz filter > makes a difference. I’ve got it configured to kick in at 450 Hz. There’s a > distinct difference in the audio background noise switching to 450 from 500. > During the 160m CW contest, this filter knocks down a lot of adjacent channel > interference. I’m glad I have a narrow roofing filter available for CW, PSK > and RTTY work. > > Bottom line — can you afford to put $700 (or $1400 if you buy the KRX3 > option) worth of crystal filters in your radio? Yes? Good for you. No? Then > the stock 5-pole filter works great. Splurge for the 500 Hz (5-pole) roofing > filter instead of upgrading to the 2.8 kHz (8-pole) filter. > > PS - I just bought the KRX3 option and purchased it with the stock 2.7 kHz > (5-pole) filter. I did spend the extra $30 to get a filter whose offset > matches the offset of the filter in the main radio (-0.79). > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [email protected] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
