Hi Joe, Thanks for the reply.
I have a 6.0 and a 1.8 that I expect to swap out for the 1.5 for SSB contesting, and am having a lot of fun between contests exploring various data modes, all of which, except PSK31 etc, are fairly new to me. The next addition to my K3 is going to be a better filter than the 1.8/1.5 for all round data usage. Considering that my CW skills have never risen to "contesting" level, my CW operations are all casual, so this will might end up being the narrowest filter in the radio. Sounds like the 500 is probably wide enough for 500 hz modes like Olivia 8/500, which is my favorite keyboard rag chew mode, so would probably well serve the purpose I have in mind. That would leave the last slot for a 2.1 or a 250 later, TBD. 73 Jack KZ5A On 7/18/2010 5:24 PM, Joe Subich, W4TV wrote: > > How about if you are a "tune in the signal|" type and run > > various data modes up to 500 hz wide MSK modes? > > There are many choices depending on how close the data modes push > the 500 Hz bandwidth. Elecraft's 500 Hz, 5-pole filter is very close > to 500 Hz at the -6 dB points (mine all measure 480 - 490 Hz). > INRAD have a 500 Hz, 8-pole filter but do not publish any curves > or specific -6dB/-60dB data but the one 8-9 MHz 500Hz, 8-pole filter > for which they do publish curves is about 590 Hz wide at -6dB. The > INRAD/Elecraft 1000 Hz, 8-pole filter is an option as are any of the > "narrow" SSB filters including the INRAD 1500 Hz, 8-pole, and > INRAD/Elecraft 1800 or 2100 Hz, 8-pole filters. > > 73, > > ... Joe, W4TV > > > On 7/18/2010 5:47 PM, Jack Brabham wrote: >> How about if you are a "tune in the signal|" type and run various data >> modes up to 500 hz wide MSK modes? >> >> Looks like the choices are 500 and 1000 hz. >> >> 73 Jack KZ5A ______________________________________________________________ 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
