Aloha, Considering recent posts, maybe you would be interested to hear about the setup we used at KH6LC during the Stew Warmup. I brought my K3 SN 469, which has 2.7, 1.8, and 0.4 filters in the main and matched 2.7 and 0.4 in the sub. Now I know that I should have sprung for the other 1.8 filter and saved myself the labor of installing it later. Thanks to the stamina of Ken N6KB we have two beverages, one roughly in the JA direction and one slightly east of the US mainland direction. The transmitting antenna is a shunt fed tower. We decided to try for maximum flexibility, so we put the tower on ANT1, the JA beverage on RX ANT IN and the US beverage on AUX RF. With the appropriate configuration via the front panel this put the signals from the mainland in the right ear and the signals from Asia and Alaska in the left ear, and if we wanted to try the vertical it was a single button push to get it. Occasionally a signal would move from ear to ear! The beverages aren't really very long, the longer is about 450 ft, but they are surprisingly directional. I think it's fair to say that this setup made a positive impression on all of us and now we want Ken to slog through the jungle some more to put in more and longer wires. The roofing filter mismatch between 400 Hz and 1800 Hz bandwidth was sometimes noticeable, but it wasn't a big thing. One mod I would like to see would be an option to have the subreceiver bandwidth and shift track the main as it's an aggravation to have to double click the A>B when you want that. Of course, you would like the option of having them separate, too.
This K3 was the subject of a post last week ("Bad CW Note") and I can report that this problem seemed to us to not be present last weekend, but those of you who heard us may tell a different story and if so I would be happy to hear from you directly. In between the post and the weekend, I had partly disassembled the case to look into putting a strap directly from the antenna tuner RF ground to the rear panel connectors, but I decided I didn't have the time to finish so I just replaced the panels, and maybe that improved the ground. On the other hand, we did get bad reports on the CW keying. One report said that it sounded like the keying was "soft". Another report said "distinctive, but not fatally obnoxious". It appears now that this is a problem mainly with the computer keying from the rear panel jack, and not the CW generated from the internal keyer, and that it may be connected to the TX DLY setting that I had at its maximum value to accommodate my old TL922 linear. I have backed the setting off to 15 and the CW weight looks more consistent on my scope now. At KH6LC there is a modern linear and the nominal value should be enough. We are still looking into this and also the buzz on the note and the story may change. Curt AH6RE _______________________________________________ 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