No TCX0-3 fitted. Serial number is 307. 73 Stewart G3RXQ On Mon, 10 Mar 2008 17:16:11 -0400, Greg - AB7R wrote: > This was true with some early optional TCXO-3 units that had exposed SMDs on the bottom > of the can. There was a capacitor that > > could potential short to the metal socket where the missing pin would have been. Hence > the addition of the insulation. This is > > not a problem with the standard reference oscillator as there are no exposed parts on > the bottom. > > > Stewart, Do you have the optional TCXO-3 and what is the radio's serial number? > > > ------------------------- > > 73, > > Greg - AB7R > > Whidbey Island WA > > NA-065 > > K3#0009 and 0319 > > > On Mon Mar 10 13:16 , "Bruce Bowman" sent: > > >> Hi Stewart- >> >> >> Like you, I had a problem with my K3 going dead. Unlike you, I bought a >> >> factory-built unit. I did that because I wanted to know it was working >> >> properly from the start. That turned out to be one of those things that >> >> sounds like a good idea but doesn't withstand close scrutiny. >> >> >> What I saw initially was an occasional error message (ERR PL1) when >> >> switching to another band, then the audio would decay to nothing over a >> >> 2 second period. Sometimes I could get it to recover by chnaging bands, >> >> sometimes not. >> >> >> Since it was factory built, they had me return my K3. They found the >> >> TCXO3-1 oscillator was grounding occasionally. The oscillator would >> >> continue to operate, but grounding it (the case? some component? dunno) >> >> caused the frequency to be pulled about 20 KHz and the receiver would >> >> die. They replaced the oscillator (probably unnecessary), added an >> >> insulator and re-ran VCO calibration. It's been rock-solid ever since. >> >> >> Bruce, NM5B >> >> Santa Fe, NM >> >> >> ----- Original Message ----- >> >> From: "Stewart Baker" [EMAIL PROTECTED]> >> >> To: "AB7R" [EMAIL PROTECTED]> "Elecraft Reflector" >> >> elecraft@mailman.qth.net> >> >> Sent: Monday, March 10, 2008 5:33 AM >> >> Subject: RE: [Elecraft] K3 - RX Problem after latest firmware update >> >> >> Greg, >> >> Have re-installed V1.75 & V1.57 again, no change. >> >> >> Here is a sequence which you might like to try:- >> >> >> POWER >> >> 80m LSB 3780 >> >> NORM >> >> LO CUT=0.15 >> >> SAV ALT1 >> >> NORM >> >> TX ON/OFF >> >> ALT1 >> >> TX ON/OFF >> >> Receive may be dead at this point >> >> >> If not continue with >> >> Select USB >> >> ALT1 >> >> TX ON/OFF >> >> Receive dead >> >> >> Switching bands, modes or NORM always restores receiver. >> >> >> I do (from my point of view) hope that I am not the only one with >> >> this funny.. >> >> >> 73 >> >> Stewart G3RXQ >> >> >> On Sun, 9 Mar 2008 12:30:15 -0700, AB7R wrote: >> >>> Stewart, >>> >>> >>> Try installing the new firmware again. I just tried to recreate >>> >> your report >> >>> and the radio performs as expected...no problem with RX after a >>> >> transmit >> >>> with ALT1 set to 0.15 on the LO side. >>> >>> >>> 73 >>> >>> Greg >>> >>> AB7R >>> >>> >>> -----Original Message----- >>> >>> From: [EMAIL PROTECTED] >>> >>> [EMAIL PROTECTED]','','','')">[EMAIL PROTECTED] lman.qth.net]On >>> Behalf Of Stewart >>> >> Baker >> >>> Sent: Sunday, March 09, 2008 11:32 AM >>> >>> To: Elecraft Reflector >>> >>> Subject: [Elecraft] K3 - RX Problem after latest firmware update >>> >>> >>> I am not sure if there is an obscure problem after the latest >>> >> MCU >> >>> and DSP update. Maybe others could check and see if it happens >>> >> to >> >>> them ? >>> >>> >>> Any band on SSB if I have the DSP set to ALT1 with the Low Cut >>> >> set >> >>> at 0.15 Hz , then after going onto transmit the receiver appears >>> >>> to be dead. If I set the DSP to NORM by pressing the knob the >>> >>> receiver suddenly bursts into life... >>> >>> This happens whether there is any transmit audio or RF out. >>> >>> >>> 73 >>> >>> Stewart G3RXQ >>> >>> _______________________________________________ >>> >>> Elecraft mailing list >>> >>> Post to: Elecraft@mailman.qth.net >>> >>> You must be a subscriber to post to the list. >>> >>> Subscriber Info (Addr. Change, sub, unsub etc.): >>> >>> http://mailman.qth.net/mailman/listinfo/elecraft >>> >>> >>> Help: http://mailman.qth.net/subscribers.htm >>> >>> Elecraft web page: http://www.elecraft.com >>> >>> No virus found in this incoming message. >>> >>> Checked by AVG. >>> >>> Version: 7.5.518 / Virus Database: 269.21.7/1322 - Release Date: >>> >> 3/9/2008 >> >>> 12:17 PM >>> >>> >>> No virus found in this outgoing message. >>> >>> Checked by AVG. >>> >>> Version: 7.5.518 / Virus Database: 269.21.7/1322 - Release Date: >>> >> 3/9/2008 >> >>> 12:17 PM >> >> >> _______________________________________________ >> >> Elecraft mailing list >> >> Post to: Elecraft@mailman.qth.net >> >> You must be a subscriber to post to the list. >> >> Subscriber Info (Addr. Change, sub, unsub etc.): >> >> http://mailman.qth.net/mailman/listinfo/elecraft >> >> >> Help: http://mailman.qth.net/subscribers.htm >> >> Elecraft web page: http://www.elecraft.com >> >> >> _______________________________________________ >> >> Elecraft mailing list >> >> Post to: Elecraft@mailman.qth.net >> >> You must be a subscriber to post to the list. >> >> Subscriber Info (Addr. Change, sub, unsub etc.): >> >> http://mailman.qth.net/mailman/listinfo/elecraft >> >> >> Help: http://mailman.qth.net/subscribers.htm >> >> Elecraft web page: http://www.elecraft.com
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