[Elecraft] K3 Crystal Filters and Dynamic Range - D.R. impact and my basic recommendations

2007-05-07 Thread Eric Swartz - WA6HHQ, Elecraft
Whew! The last week has been a tidal wave of interest, orders and questions. There has been a lot of discussion and speculation on the list lately about the necessity for narrow filters ahead of the K3's DSP filtering and the impact of various filter bandwidths on receiver IMD. This in turn

[Elecraft] K3 Crystal Filters and Dynamic Range - D.R. impact and my basic recommendations

2007-05-07 Thread Bill Tippett
WA6HHQ: We were very careful not to make the same mistakes made by other radio designs. Thank you Eric! Sorry for being paranoid but the old axiom Fool me once...shame on you. Fool me twice...shame on me. applies to me personally since I have been burned before...hence my caution.

[Elecraft] K3 Crystal Filters and Dynamic Range - D.R. impact and my basic recommendations

2007-05-07 Thread Bill Tippett
WA6HHQ: Notes: Since we also transmit through this (2.7 kHz) filter... Will it be possible to transmit CW through a narrower filter than the 2.7 kHz to even further minimize transmitted key clicks and phase noise? If so, how low in BW could we go before causing problems? 1 kHz, 500

Re: [Elecraft] K3 Crystal Filters and Dynamic Range - D.R. impact and my basic recommendations

2007-05-07 Thread FISCHER,GREG
Bill, Setting the TX filter for CW is a menu config option. I'm not sure what testing as been done yet to outline the TX characteristics of the narrower filters though. 73, Greg AB7R On Mon, 07 May 2007 17:43:14 -0400 Bill Tippett [EMAIL PROTECTED] wrote: WA6HHQ: Notes: Since we also

[Elecraft] K3 Crystal Filters and Dynamic Range - D.R. impact and my basic recommendations

2007-05-07 Thread Barry N1EU
WA6HHZ explained We chose INRAD as our OEM 8-pole crystal filter supplier because of their excellent filter performance. I hope Elecraft will consider offering the Inrad 1.8Khz 8-pole filter 8.215Mhz if (711-B) for the K3, or even something narrower, for ssb contesting. I assume the K3 will be