I am using two K3's in my remote system. If I want to upgrade the syn boards, do I need to do the control radio as well as the remote radio? Also the remote radio has the sub receiver, which I use very infrequently, remotely. Do I still need to do both boards in that rig? Thanks. John, N0IJ Sent from my iPhone
On Jul 10, 2015, at 6:18 PM, Wayne Burdick <[email protected]> wrote: >> 1) modified bias in the speaker amplifier *driver* (not the amp >> itself) for improved linearity. > > The power amp itself has in fact been updated. And there's a new AF driver > stage. > > Wayne > > >> This does not affect the power >> output or frequency response. >> 2) 5/10/15 dB stepping on the *main receiver* attenuator (this >> does not affect the KRX3 which remains at 0/10dB) >> 3) improved isolation on the main RF board due to a change from >> two to four layer construction. The difference is probably not >> measurable on the air. >> 4) a change in RF output devices in the KPA3 - difference TBD. >> >> The other change is the KIO3B which provides the option of an >> internal USB interface for radio control and USB CODEC ("sound >> card"). A traditional RS-232 interface is more flexible and a >> *high quality* external sound card or *well designed* audio >> interface *may* provide a somewhat lower noise floor (better >> SNR/dynamic range). Most users will probably not notice a >> performance boost unless they are using one of the notoriously >> "dirty" (cheap) amateur products. >> >> 73, >> >> ... Joe, W4TV >> >> >>>> On 2015-07-10 12:21 PM, Jim Brown wrote: >>>> On Fri,7/10/2015 6:07 AM, Bill wrote: >>>> I am not a DXer or contester - merely a rag chewer on 75 and 40. >>> >>> For your operating interests, the only thing I would do is upgrade to >>> the new synth board. I consider that 90% of the difference between the >>> K3 and K3S. I did that, and because 6M is important to me, I also bought >>> the new KXV3B to get the new preamp. I had previously been using an >>> outboard ARR GasFET preamp. >>> >>> 73, Jim K9YC >> >> ______________________________________________________________ >> 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] ______________________________________________________________ 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]
