> Right now my conclusion according to my planed way of > operation is the following setup > > 2 pcs KFL3A-2.8_2.7sw replacement K3 and KRX3 > 2 pcs KFL3A-1.8K SSB > 2 pcs KFL3A-200 5-pole CW + matching > 2 pcs KFL3A-400 CW > 2 pcs KFL3B-FM FM
Having done the 2 x KFL3A-2.8_2.7sw replacement, I am not convinced that there is enough (any) performance gain to justify the significant cost. As others have commented, you probably don't need the extra FM, 1.8K and 200 Hz filters in the subreceiver. However, with the soon to be released independent band operation, the FM filter might be worthwhile to permit SWL or other general purpose listening. > As I understand this configuration will not allow me to > receive or transmit on AM but it will maybe allow ESSB later > if the firmware can be modified to use the FM filter for ESSB. The FM filter will allow you to receive AM but not transmit at the present time. With the concern for transmit image rejection when using the FM filter in AM or ESSB, there is no reason that the filter could not be offset to place the image well down the skirt when transmitting if the skirts are marginal with the signal centered. 73, ... Joe, W4TV > -----Original Message----- > From: elecraft-boun...@mailman.qth.net > [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Kjeld Holm > Sent: Friday, February 06, 2009 3:32 AM > To: elecraft@mailman.qth.net > Subject: Re: [Elecraft] [K3] Elecraft roofing filters > > > Dear all, > > Once and again: Thanks to all for very interesting and > informative answers. > > Right now my conclusion according to my planed way of > operation is the following setup > > 2 pcs KFL3A-2.8_2.7sw replacement K3 and KRX3 > 2 pcs KFL3A-1.8K SSB > 2 pcs KFL3A-200 5-pole CW + matching > 2 pcs KFL3A-400 CW > 2 pcs KFL3B-FM FM > > For the purpose of working as many DXCC countries as possible > including picking new ones during contests on crowded bands. > > As I understand this configuration will not allow me to > receive or transmit on AM but it will maybe allow ESSB later > if the firmware can be modified to use the FM filter for ESSB. > > Any further comments before my ordering will be appreciated. > > Vy 73 > OZ1CCM Kjeld > > > > -----Original Message----- > From: elecraft-boun...@mailman.qth.net > [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Kjeld Holm > Sent: 5. februar 2009 17:27 > To: elecraft@mailman.qth.net > Subject: Re: [Elecraft] [K3] Elecraft roofing filters > > Dear all, > > Thanks for all the kind answers. > > Sorry for all that fuss. Somehow I mixed up everything so I > ended up thinking of some nonsense like 1.0 kHz for SSB. :-o > > I will go for 250 Hz and 400 Hz for CW plus 2.8 kHz for SSB. > And also filters for AM and FM. > > Vy 73 > OZ1CCM Kjeld > > > > -----Original Message----- > From: W0MU Mike Fatchett [mailto:w...@w0mu.com] > Sent: 5. februar 2009 15:28 > To: 'Kjeld Holm' > Subject: RE: [Elecraft] [K3] Elecraft roofing filters > > They are available on the website. > > KFL3A-1.0K 1 kHz, 8-pole roofing filter 125.95 > > I have one in my K3 but I don't use it too much. You might > want to use it over a 250 or 500 filter to listen to a pile > up so you can hear if the station is working people above or > below his frequency. I have listened to SSB a bit on the > filter and while very narrow for SSB you can hear the station. > > The better question might be, what modes do you like to > operate? I am about to order a second K3 and I was going to > go with the following filters. 2.8 replacing the stock 2.7/ > AM/ FM/ 400 or 500 and 250. If you never play to transmit on > AM or want to do ESSB or FM those slots would be available. > The K3 I have now has the 2.7 which is being replaced with > the 2.8/1.8/1.0/400/200 in the main rcv, 2.8/400 in the sub. > > Mike W0MU > > "A slip of the foot you may soon recover, but a slip of the > tongue you may never get over." Ben Franklin -----Original > Message----- > From: elecraft-boun...@mailman.qth.net > [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Kjeld Holm > Sent: Thursday, February 05, 2009 5:44 AM > To: 'ElecraftList' > Subject: [Elecraft] [K3] Elecraft roofing filters > > Dear all, > > In the "Roofing Filter Notes from Wayne and Eric" link on the > Order page I see the two sentences: "Add narrower/wider > filters as you prefer. I like to use the 1.0 kHz crystal > filter when tuning a crowded band or listening to a pile up." > > Can anyone point me to a place that can tell me what "the 1.0 > kHz crystal filter" is, where to obtain one and when it is > worth using? > > Vy 73 > OZ1CCM Kjeld > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
