[Elecraft] KX2?
Steve, WG0AT, let the cat (or goat?) out of the bag. See http://www.youtube.com/attribution_link?a=35DkbDsYyDY=/watch%3Fv%3DrAFYDJRZlHw%26feature%3Dem-uploademail What's a KX2? Niel - W0VLZ __ 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
Re: [Elecraft] Miniature self-supporting HF antennas
My favorite all around travelling/hiking KX3 antenna is a 20 mtr endfed half wave (EFHW) wire fed with an electrical quarter wave of TV twinlead. See http://w0vlz.blogspot.com/2012/06/another-portable-antenna.html With the KX3/KXAT3 it will load up on 40, 30, 20, 17 and 10. My 20 meter zepp is light weight and it only needs one support, especially when deployed as an inverted V. I've made use a large bush for a support before but usaully I'm familiar enough with the location that I know whether I'll find a tree or not. If not, I carry along a 16' crappie pole (cheap, light and collapses to less than 4') and some extra nylon cord for guy lines. Niel - W0VLZ Hi all, Have you found the perfect above-the-treeline backpacking antenna for use with your KX3 or other small rig? snip But the search for the ideal miniature HF antenna continues: something both very compact*and* highly efficient. Ideally it would break down to a length of 8 or less, do an excellent job on 20 meters and up, and earn a passing grade on 30 and/or 40 meters. One other key factor, at least with the KX3/KX1/K1 genre, is to take maximal advantage of the rig's internal ATU. A wide-range ATU (such as the KXAT3) can turn a narrow-banded antenna into one that covers a full band or even multiple bands, within limits. One general approach is to coarse-tune the antenna's own inductance, then let the ATU do cleanup. snip 73, Wayne N6KR __ 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
Re: [Elecraft] KX3 ATU
Robert, I've found that the KX3 ATU loads up a 58' endfed wire just fine on all bands, but it can't load up everything. The 67' endfed wire I have (which, in theory, is very tough to load up) could be loaded up on 20 with the K1 ATU. The KX3 ATU can not handle it. So, for your loop, depending on the size, you may or may not have trouble depending on the length. For a closed loop I believe you want to avoid odd multiples of half wave lengths. If the possible length you have is pretty inflexible and the KX3 ATU can't handle it you can try inserting an insulator half way around making it an open loop. 73, Niel - W0VLZ KX3 #43 Message: 21 Date: Tue, 24 Apr 2012 12:50:28 + From:va3...@gmail.com Subject: [Elecraft] KX3 ATU To: Elecraftelecraft@mailman.qth.net Does anyone know what the capability/efficiency of the internal ATU is? Not talking about the wattage (its up to 20 I believe) but the tuning the SWR/range Looking at deploying a random wire/loop so I am wondering if I need a separate ATU or can the internal unit handle the range? Thanks Robert a 'kosher' ham Sent from my BlackBerry device __ 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
Re: [Elecraft] Portable Keyboard for KX3
John, Have you looked at the terminal program that is part of the utility package available for the KX3 as a download from Elecraft? Practically any Windows PC with a RS232 or USB port can be used as a keyboard for CW, RTTY and PSK31, no sound card required. It uses the KX3 ACC1 port. With the deal you also get 16 memory buffers and a full screen display. I've been looking for a small Netbook myself to plug into my KX3. 73, Niel - W0VLZ KX3 #43 *John Lally* jlally at icehouse.net mailto:elecraft%40mailman.qth.net?Subject=Re:%20%5BElecraft%5D%20Portable%20Keyboard%20for%20KX3In-Reply-To=%3C000701cd1b67%242123d3f0%24636b7bd0%24%40net%3E /Sun Apr 15 20:23:20 EDT 2012/ Does anyone know of a portable keyboard one can use to key the KX3? This would probably be through the key input on the KX3 so that I could type in CW,RTTY, and PSK31 into the KX3. Preferably, this portable keyboard would be self powered by its own internal battery. Also a smaller sized keyboard would be preferable. Thanks. John W7JJL __ 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
Re: [Elecraft] KAT2 with EFHW antenna
Phil, You might try a 67' length of wire (EFFW antenna). I've used that (and a 32' EFHW) on 20 a lot with my K1 with the KAT1 installed...tunes to close to 1:1 just fine. Have fun at Crater Lake. There are some neat places along the rim for hamming. It's a 2000 mile drive (one way) for me but I've gotten there twice within the past several years. See http://www.prismnet.com/~nielw/qrp/CraterLake_july04.jpg and http://w0vlz.blogspot.com/2009/08/after-three-weeks-5300-miles-and-12.html 73, Niel - W0VLZ Message: 2 Date: Tue, 23 Aug 2011 16:00:17 -0700 From: Phillip Shepardph...@riousa.com Subject: [Elecraft] KAT2 with EFHW antenna To:elecraft@mailman.qth.net Message-ID:lnejjggbopigkcikmckdeegoiaaa.ph...@riousa.com Content-Type: text/plain; charset=us-ascii I have been using my K2 with an MFJ tuner to feed an end fed halfwave wire for portable use (like SOTA). The 20m antenna is 33' long and I use one or two 16' counterpoise wires. It seems to work well for what it is and 10W. I just built and installed the KAT2 ATU into the K2 to lighten my pack by the loss of the MFJ. The KAT2 tuner checked out fine on the bench, but it had a very hard time getting a good match to the antenna. In AUTO mode, it only got the SWR down to about 5:1. I put it in ALT mode, and it spent a long time searching before it got down to between 3:1 and 4:1, depending on the 20m frequency. I added about 2 of wire to the antenna, and the tuer got down to about 2:1 to 2.5:1. I added another foot of wire (now 36'), and it got down to about 1.5:1. Five or six feet added yielded a perfect match (1:1). So I now have a 39' wire for 20m use. Is this normal? Should the KAT2 be able to more easily match the 33' halfwave antenna? Thank you. 73, Phl, NS7P __ 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
[Elecraft] K1 Receive Performance Comparisons?
Elecraft has receive performance numbers at http://www.elecraft.com/K2_perf.htm#Main%20RX%20Table but the K1 is not listed and the ARRL K1 numbers at www.http://www.arrl.org/members-only/prodrev/pdf/pr0103.pdf didn't look directly comparable. Has anyone added the K1 into the Elecraft table for a side-by-side receive performance comparison? 73, Niel - W0VLZ K1 #750 ___ 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
