Tnx Andy for the info. I decided against installing the additional caps. I am using 4.61. The AGC seems to work fine. Will have another chance to check it at KP2M for the ARRL SSB upcoming contest.
73, N2TK, Tony From: Andrew Catanzaro [mailto:[email protected]] Sent: Tuesday, February 05, 2013 9:33 AM To: [email protected]; [email protected] Subject: K3 - RF Board - C238 - AGC change I did the mod shortly after it was described here. The change in AGC behavior was not subtle. Yes it improved copy in pileups when I was the DX. I found it a bit difficult to cope with, though, because the changes in audio strength amongst the stations was more than my ears have an appetite for. I had some trouble putting up with the loud signals challenging my ears by the time I had the volume up enough to discern the weak ones. I believe subsequent firmware changes have obviated the need for this mod. I plan on removing the extra cap. YMMV. This is only my experience and my observations. 73, Andy Message: 11 Date: Mon, 04 Feb 2013 16:37:20 -0500 From: "N2TK, Tony" <mailto:[email protected]> <[email protected]> To: "'elecraft'" <mailto:[email protected]> <[email protected]> Subject: [Elecraft] K3 - RF Board - C238 - AGC change Message-ID: <mailto:[email protected]> <[email protected]> Content-Type: text/plain; charset="US-ASCII" A year or so ago there was discussion about adding additional caps to C238 to reduce IMD. I believe it was two 1-uf caps. What was the outcome of that? Did it make a noticeable difference in pileups or for weak signal detection? Is it a recommended mod? 73, N2TK, Tony ______________________________________________________________ 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
