This thread was very helpful to me and I learned a lot about the RF gain control. Thank you!
Phil Philip LaMarche LaMarche Enterprises, Inc. www.instantgourmetspices.com www.w9dvm.com 800-395-7795 pin 02 727-944-3226 FAX 727-937-8834 NASFT 30210 K3 #1605 W9DVM -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Monday, March 16, 2009 12:16 PM To: [email protected] Subject: Re: [Elecraft] "Hot" K3 Yes, it is a "hot" receiver. I usually have the RF gain turned to about 50% - just a little above the band noise. You can be more aggressive on PSK and weak signal CW as it is possible to copy signals below (but not much below) the band noise. Also, the K3 was designed to have excellent dynamic range and if you ride the RF gain too high, you are wasting some of that headroom. Buck k4ia K3 #101 In a message dated 3/16/2009 11:57:22 A.M. Eastern Daylight Time, [email protected] writes: Don: I had the same reaction upon first using my new K3 last year. The K3 is significantly more sensitive than my previous rig (IC-756 non-Pro), and as my noise environment is fairly high (inner suburb with ~110 dBm background noise), at first it seemed as if the K3 is fairly noisy. Also, while the S meter of most rigs are calibrated fairly well at S9, their meters are not linear (in dB units) at lower S unit readings (the K3 meter is very linear at 6 dB per S unit)-- with the result that the K3 meter readings are higher by a few S units. I find that I often use the attenuator and/or the RF gain to decrease the band noise in the K3 -- I rarely used these in my other rigs. Also, try playing with the AGC settings, particularly the THR and SLP settings, which can be customized to suit your operating conditions. Also, turning off the AGC and riding the RF gain can really help pull out very weak signals. Steve N9SZ Don Rasmussen wrote: "My new K3 #2308 shows two to three S-units high as compared to my other HF radios, \ and lots of hiss in the speaker audio at low AF levels." ______________________________________________________________ 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 **************A Good Credit Score is 700 or Above. See yours in just 2 easy steps! (http://pr.atwola.com/promoclk/100126575x1219850974x1201371016/aol?redir=htt p:%2F%2Fwww.freecreditreport.com%2Fpm%2Fdefault.aspx%3Fsc%3D668072%26hmpgID %3D62%26bcd%3DfebemailfooterNO62) ______________________________________________________________ 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 ______________________________________________________________ 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
