Early versions of the firmware did, in fact, allow transmission through the 2.1kHz filter, and that capability was removed. I suggest that speculation is futile, since there are authoritative sources available.
73, doug Date: Tue, 26 Jan 2010 08:41:18 +0000 From: "David Woolley (E.L)" <for...@david-woolley.me.uk> One possibility is that the rig has only been type approval tested in that configuration, so anyone wanting to operate it with a different filter would require a professional RF spectrum analyzer. Top posted through policy, not belief. Brian Machesney wrote: > reflector. The only "authoritative" information I found information was this > from July 2008: > > "Until further information to the contrary is available from Elecraft, you > must select the 2.7 or 2.8 filter for SSB, Data and CW transmit. The AM > transmit filter must be 6 kHz and the FM transmit filter must be 13 kHz. Any > other settings will result in failure and a ERR TXF (Error TX Filter) > message. ______________________________________________________________ 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