John, I was informed here on the reflector. I think it was Wayne that sent the e-mail describing the mods. It is also on the website in the K3/K3S mods section. Here are the mods and I think this will answer Bob's, K4TAX question as well. The repair report says the following: IMD improvement KLPA to rev B3, KPA3A to Rev C9. KPAIO3MDKT (This adds a capacitor to the KPA3A I/O board to reduce fan noise on transmit) KPOD Ready, FP R82 to 6.8 Ohm, R60, 66, and 75 to current values. 7T capacitor. This provides power to the KPOD directly from the front panel jack for the KPOD. Early versions of the K3S below approximate serial # 10700-10800 require the KPOD to be powered from the K3S 12 Volt accessory socket on the back of the radio or powered from an external power supply or wallwart. John, if you or Bob, K4TAX have any other questions, let me know and I will try and answer them. If I have missed something or have something incorrect, I'm sure Don or someone else will chime in.
73, Mark, WB9CIF -----Original Message----- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of j...@kk9a.com Sent: Friday, October 20, 2017 6:21 PM To: elecraft@mailman.qth.net Subject: [Elecraft] Age of a K3S. Serial # 105XX I have an early K3S and I am unaware of these factory mods. What are they? How are owners notified? John KK9A Mark, WB9CIF wrote: John, The order date of my K3S serial #10629 is January 28, 2016. So, I'm guessing your 105xx order date would be, depending on early 5xx or late 5xx, December 2015 or January 2016. Be aware John that the early K3Ss, lower than serial # approximately 10700 or 10800 (I don't remember the exact serial #) need some modifications to be up to current K3S production. The mods are the IMD mod for the K3LPA and KPA3A, the fan mod and the KPOD mod so the KPOD can be powered from the front panel KPOD jack. I just got my K3S back from Elecraft about two weeks ago after having these mods installed. I believe Elecraft will perform these mods for free except for shipping to and from Elecraft. If I'm incorrect on that I'm sure Don or someone on the reflector will chime in. 73, Mark, WB9CIF ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to markmus...@sbcglobal.net ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
