Start with the FAQ here: http://www.elecraft.com/manual/KSYN3A%20FAQ-ver-C-2.pdf
The original announcement on this list described it like this: The KSYN3A synthesizer module is a completely new design that improves on the original KSYN3 in several ways: ULTRA-LOW PHASE NOISE The KSYN3A significantly improves the K3's already excellent RX and TX phase noise at close carrier spacings. This in turn noticeably improves the K3's top performing close spaced Rx dynamic range, yielding even better weak signal detection in the presence of strong signals. FASTER CW BREAK-IN AND MORE ACCURATE CW ELEMENT TIMING EXCELLENT MECHANICAL STABILITY The KSYN3A is virtually immune to both physical vibration and magnetic coupling, and operates over a very wide temperature range. 600-METER COVERAGE The KSYN3A extends VFO tuning down to 100 kHz, with sensitivity gradually falling off below 450 kHz. Transmit output is as high as 1.0 mW for use with a suitable external amplifier. (Note: 600-m and below operation also requires the KBPF3 and KXV3 options.) wunder K6WRU CM87wj http://observer.wunderwood.org/ On Mar 2, 2015, at 6:02 PM, James D. (Jimmy) Walker, Jr. via Elecraft <[email protected]> wrote: > Can someone please give me a summary of this synthesizer issue or a useful > link so I can understand all this conversation about new boards. I have a > three year old K-3 and a one year old sub-receiver. Do I need these boards? > What would they do for me? An off-list reply is welcome since it appears I’m > the only one who doesn’t know what’s going on. Thanks. > > Jimmy, WA4ILO > > ______________________________________________________________ > 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]
