Mic Preamp for K2
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Many years ago, I decided to build the mic preamp that was posted
somewhere on the Elecraft website by Mike N0MF. I believe it is still there. It boosts the signal from a Heil Proset dynamic element up to a level sufficient to drive the K2/VOX. Since that time, I believe Heil has produced a special element that does away with the requirement for this preamp. Nonetheless, I built one and even designed a simple PCB to hold the 8 parts. The board was so small that I made a couple while I was at it. Not having any need for two of these preamps, I've had the 2nd board sitting around, gathering dust all these years. I could just throw it away (it's unpopulated), but before I do that, I'm offering it (board only) to anyone who wants it, free (tis the season). It does not come with any parts, but an enlarged picture of the PCB will be included with it, showing the parts placement. The board is small enough to easily fit inside an old 35mm film can (remember those?). I'll gladly send photos of the board and the finished product to anyone interested in seeing how it looks. I'm NOT giving away the one I built, just the spare unpopulated board, of which I have only one (1). That being said, the first person to request this board gets it (no foreign addresses). If nobody requests it, I'll go with plan A and pitch it. Please reply to me, rather than the list, to cut down on list traffic and to make sure I receive it, as I only get the digest version of the list these days. and don't always read it end to end. Thanks and 73, John AA0VE ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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I am getting the error message only with RTTY.
It don't matter if I run full legal limit or no amp with the rig power cranked down to QRP, so it's not RF in the shack problem. It's fine on all other modes. I searched the archives and read reference to a DSP problem and reloaded the firmware several times over the last few weeks. In addition I saw reference to re-seating the front panel board. I disassembled the K3 today, did that and most all the other connections. Same symptoms are there. The exact err msg is E 00300 30 ERR DSE Anyone else had this problem and how was it resolved? TIA 73 Dwight NS9I ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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What logging software are you running and how long are your transmissions? The problem appears to be heavily correlated with logging software that polls aggressively (or users that are trying to poll from multiple applications at the same time) and long transmissions. Essentially, the heavy polling over- runs the K3's control processor and eventually the garbled input generates a pathological command. 73, ... Joe, W4TV On 12/21/2013 5:21 PM, DGB wrote: > I am getting the error message only with RTTY. > > It don't matter if I run full legal limit or no amp with the rig power > cranked down to QRP, so it's not RF in the shack problem. It's fine on > all other modes. > > I searched the archives and read reference to a DSP problem and > reloaded the firmware several times over the last few weeks. In addition > I saw reference to re-seating the front panel board. I disassembled the > K3 today, did that and most all the other connections. > > Same symptoms are there. > > The exact err msg is > > E 00300 30 > ERR DSE > > Anyone else had this problem and how was it resolved? > > TIA 73 Dwight NS9I > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > 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:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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Running N1MM. The transmissions it occurs on are such as short as "W4TV
599 4 4 NS9I", so not long but only occurs when transmitting not on receiving. I was running in the rtty TEST today, or trying too! Only running one cluster and have that filtered so not many spots coming thru. thanks 73 Dwight NS9I On 12/21/2013 4:30 PM, Joe Subich, W4TV wrote: > > What logging software are you running and how long are your > transmissions? The problem appears to be heavily correlated > with logging software that polls aggressively (or users that > are trying to poll from multiple applications at the same time) > and long transmissions. Essentially, the heavy polling over- > runs the K3's control processor and eventually the garbled input > generates a pathological command. > > 73, > > ... Joe, W4TV > > > On 12/21/2013 5:21 PM, DGB wrote: >> I am getting the error message only with RTTY. >> >> It don't matter if I run full legal limit or no amp with the rig power >> cranked down to QRP, so it's not RF in the shack problem. It's fine on >> all other modes. >> >> I searched the archives and read reference to a DSP problem and >> reloaded the firmware several times over the last few weeks. In addition >> I saw reference to re-seating the front panel board. I disassembled the >> K3 today, did that and most all the other connections. >> >> Same symptoms are there. >> >> The exact err msg is >> >> E 00300 30 >> ERR DSE >> >> Anyone else had this problem and how was it resolved? >> >> TIA 73 Dwight NS9I >> >> >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:[hidden email] >> >> 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:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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