[Elecraft] K3 keyboard
A couple of weeks ago it was mentioned that it will be possible to send data modes and presumably CW with the K3 using a keyboard that plugs in to a socket under the radio. Maplin is selling a micro keyboard http://xaddr.com/gf at a reduced price at the moment. It has a USB 1.1 connector. Would this work with a K3? 73, -- Julian, G4ILO G4ILO's Shack: www.g4ilo.com K2 s/n: 392 K3 s/n: ??? ___ 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] Re: morse gen
On 6/1/07, DOUGLAS ZWIEBEL <[EMAIL PROTECTED]> wrote: Julian: I saw the earlier posting on Elecraft citing your app. I downloaded it last night and I LOVE it! And it is sooo tiny too! [snip] Great job...THANKS! I'm glad you find it useful! I only wish I had more time to use it myself, and get up to those kind of speeds. 73 -- Julian, G4ILO G4ILO's Shack: www.g4ilo.com K2 s/n: 392 K3 s/n: ??? ___ 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
Re: [Elecraft] dynamic range questions
Don, Your suggestion that both applied signals should be in the receiver's passband in order to obtain a 'figure of merit' agrees with the argument for a more useful 3rd Order dynamic range test on amateur receivers, a discussion which has been taking place for several years as far as I know. Of course the phase noise of each test signal source has to be suitably low in level at a very small offset to avoid corruption of the test results, or if you like 'Test equipment phase noise limited' results. Assuming that the receiver's 3rd Order dynamic range is not limited by its own LO's phase noise, this requirement placed on the test equipment could be one reason for resisting any change to the current test parameters however unsatisfactory they might be. Arguably one could move up from the noise floor to determine the 3rd Order dynamic range. With regard to the protection provided by roofing filters, one approach used during the design of specialized high performance receivers whose end cost was not, within reason, a controlling factor was to assume that the filter would not provide protection, although filter generated IMD was taken into account. This meant that the IMD performance of the entire receiver was maintained at a high level, and any protection provided by the filter was 'icing on the cake'. From that point on in the design process one could make adjustments aimed at reducing power consumption and cost provided that the receiver's IMD performance within the filter's passband was not compromised. MDS as you appreciate means 'Minimum Discernible Signal' not a signal at the noise floor. IIRC the term was first intended to quantify the signal which could be discerned by a human or device connected to a receiver's output, which certainly in the human case introduces a variable. Some people can hear a signal well below the noise floor thanks to the filter between the ears, others with impaired hearing may not hear the signal until it rises well above the noise floor. You might be interested to read SM5BSZ's comments on the misuse of the term MDS in QEX March / April 2006 page 36, others have commented before. Thank you for your comment. 73, Geoff GM4ESD Don Wilhelm <[EMAIL PROTECTED]> wrote: Geoff, While all the situations that you pose are valid measurements, I believe that the 'figure of merit' that should be applied is with both signals within the receiver passband. That alone will indicate the ability to copy a weak signal in the presence of a strong one - that is basic BDR (IMHO). Third order blocking IMD is quite another thing - there are many variables to consider. The best that we can hope for is that the 'standardized' tests will provide a good indicator of the performance on the real world - a receiver with narrow 'roofing filters' should excel in that test - although the test reports should specify the filter widths. The close spacing tests go a long way toward simulating the 'real world', but are really only a set of conditions that are defined for lab tests - the real world operating conditions may present an entirely different set of parameters. Current tests do consider MDS to be the minimum signal that can be demodulated with no other considerations. Right or wrong, that is the way it is for now - something must be defined for lab measurements to be valid - we just trust that they are adequate to be useful in actual operating conditions. 73, Don W3FPR ___ 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
Re: [Elecraft] serial cable connected to the K2 by accident
Guido Tedeschi wrote: You can also build this simple optocoupled interface: http://www.hamlan.org/tech/k2optocat/k2optocat.htm That might have a use in relation to the KAP100, but it doesn't address the current problem, and doesn't make sense for the KIO2. It doesn't solve the problem because it protects Auxbus by by simply not connecting it to the cable on the outside of the KA2, leaving the signal vulnerable to the insertion of an incorrect cable into the connector on the KA2 itself. It doesn't make sense for the KIO2, because the purpose of that is to generate bipolar voltages and level shift to them, the former being done to ensure that the full RS232 specification is met, rather than the weak compatibility achieved by stealing power from the fully conforming equipment on the other end of the cable. This interfaces steals power for the actual RS232 drivers, and in a way that basically treats the RS232 inputs as current loop operated, rather than bipolar voltage driven. In my view, if one wanted to opto-isolate the RS232 signals, the right way of doing this is to interface on the control board connector, and completely replace the KIO2. -- David Woolley Emails are not formal business letters, whatever businesses may want. RFC1855 says there should be an address here, but, in a world of spam, that is no longer good advice, as archive address hiding may not work. ___ 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] K3 - Which are Std. Narrow CW & SSB Filters?
I ordered the basic K3/10, with one (1) KBPF3 GC Rx filter and the MH2 Mike. Which of the other filters - would one consider the "standard" reasonably narrow SSB and CW filters? In other words - not too narrow, but narrow enough to do their job during crowded CW and SSB band conditions? 73 de Fred, N3CSY Finding fabulous fares is fun. Let Yahoo! FareChase search your favorite travel sites to find flight and hotel bargains. http://farechase.yahoo.com/promo-generic-14795097 ___ 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] max power suggested on PSK with K2/100
I just worked KJ5XF who suggested that running 50W PSK would fry the finals. I thought 50 was about max for safe PSK. What's the latest on this? Thanks John AB8O ___ 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
RE: [Elecraft] max power suggested on PSK with K2/100
25W. There has been several discussions this week about PSK output. Since it is a keydown mode PSK can be thought of as AM mode as far as power ratings, and so 1/4 of your rated output should be the max. Mike AI4NS -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of John Wiener Sent: Saturday, June 02, 2007 8:00 AM To: Elecraft email email Subject: [Elecraft] max power suggested on PSK with K2/100 I just worked KJ5XF who suggested that running 50W PSK would fry the finals. I thought 50 was about max for safe PSK. What's the latest on this? Thanks John AB8O ___ 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
Re: [Elecraft] K2 speaker jack question
I think I'm going to install a speaker/headphone switch on the back panel so I can just leave the headphones plugged in all the time. Then switch headphones & speaker as needed. Apart from the mini-plug being relatively fragile, it's also annoying to plug & unplug. It doesn't go very easily and I often hit the menu button while trying to work it. I have to say, it's the only really annoying feature I've found on the K2. 73, Drew AF2Z On Fri, 01 Jun 2007 21:37:02 -0400 (EDT), Al WA6VNN wrote: >I just replaced the connector on my K2 #4887 because the internal bypass >switch that is supposed to connect the speakers when the headphones are >unplugged wasn't making contact. Check continuity across the bypass switch >contacts >with the power off and the headphones unplugged. If it's not a dead short you >may have a damaged jack. Mine worked OK when new but after 2 years of almost >constant headphone use the connection just wasn't there. I'll dissect the >broken jack someday to see what caused the open. > >Al WA6VNN > > > ___ 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
Re: [Elecraft] max power suggested on PSK with K2/100
Mike Short wrote: 25W. There has been several discussions this week about PSK output. Since it is a keydown mode PSK can be thought of as AM mode as far as power ratings, and so 1/4 of your rated output should be the max. so let me see if I have this right, with a qrp K2, that trips the high current indicator, when it's showing 9.6w. it should be set to run about 2.4w (or less) on psk31? -- GB & 73's KA5OAI Sam Morgan ___ 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
Re: [Elecraft] max power suggested on PSK with K2/100
This bounced the first time I sent it to the reflector. Maybe it will get through this time. Ken K3IU Original Message Subject:Re: [Elecraft] max power suggested on PSK with K2/100 Date: Sat, 02 Jun 2007 09:35:40 -0400 From: Ken K3IU <[EMAIL PROTECTED]> To: John Wiener <[EMAIL PROTECTED]> CC: Elecraft email email References: <[EMAIL PROTECTED]> If you check the KPA100 manual (Rev E, anyway) you will find Elecraft's position on this subject. PSK31 - 40W Other Higher Duty cycle, e.g., MFSK, - 25W 63, Ken K3IU John Wiener wrote: I just worked KJ5XF who suggested that running 50W PSK would fry the finals. I thought 50 was about max for safe PSK. What's the latest on this? Thanks John AB8O ___ 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
[Elecraft] MDS
W3FPR: >Current tests do consider MDS to be the minimum signal that can be demodulated with no other considerations. Right or wrong, that is the way it is for now - something must be defined for lab measurements to be valid - we just trust that they are adequate to be useful in actual operating conditions. GM4ESD: >MDS as you appreciate means 'Minimum Discernible Signal' not a signal at the noise floor. IIRC the term was first intended to quantify the signal which could be discerned by a human or device connected to a receiver's output, which certainly in the human case introduces a variable. Some people can hear a signal well below the noise floor thanks to the filter between the ears, others with impaired hearing may not hear the signal until it rises well above the noise floor. ARRL uses the following definition of MDS in their test procedure (page 35 below): http://www2.arrl.org/members-only/prodrev/testproc.pdf 5.1 NOISE FLOOR TEST 5.1.1 The purpose of the Noise Floor Test (also known as "Minimum Discernible Signal" or MDS) is to determine the level of signal input to the receiver that will produce an audio output where the power in the signal is equal to the power in the noise (S + N = N + 3 dB). The test is conducted with the receiver in the CW mode using the 500 Hz, or closest available, IF filters (or audio filters where IF filters are not available. For receivers that have appropriate IF filters, all audio filtering is disabled.) Set the AGC to the OFF position if possible. This test is meant to provide a repeatable, quantifiable means of measuring sensitivity, that takes subjective human elements out of the picture (i.e. my ear's MDS may be better or worse than your ear's MDS). The key issues above are to use a standard 500 Hz bandwidth (to remove noise bandwidth variations for other BW choices) and to use a True RMS voltmeter to determine the 3 dB point for (S+N)/N. Since noise is present in both S+N and N, the True RMS voltmeter is critical to the measurement. MDS is one of the least meaningful parameters to me since I spend most of my time on the low bands where the natural noise floor is far above the noise floor of any modern receiver. In fact I am more likely to be using attenuation rather than a preamp. If I were a VHF type, MDS might be more important due to the very low galactic noise floor at those frequencies. As Geoff said earlier, a well-trained human "ear/brain DSP" is capable of effective bandwidths of about 50 Hz. In the case of published MDS specs for a standard 500 Hz bandwidth, you can typically subtract another 10 dB from published figures (i.e. improvement for 50 Hz ear/brain DSP versus 500 Hz radio DSP yields 10 dB improvement). This puts the actual MDS level at (+3 -10 = -7) 7 dB below the 500 Hz noise floor, which is quite believable since some people are reportedly able to copy signals as much as 10 dB below the noise floor. 73, Bill W4ZV ___ 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] WA3WSJ's Blue Moon QRP Hike Report
Hello all, I decided to beat the traffic and left early for my Blue Moon QRP Hike on Friday. I arrived at the Rt.183 AT Trailhead around 20:30utc. I then hiked in to the pond area and surprized a rather large heron bird and a big old bull frog. The bird took off into the air and the frog just jumped into the pond with a loud splash! I set up in the shade of the trees that surrounded the pond on the west side. I started operating around 20:45utc or so. By 21:12utc I snagged my first catch of the day -hi! It was Dan,KB6NU, from MI who gave me a 459. At 21:38utc my pond fishing produced another catch. This was a big one for me WQ8RP from MI. By now the qrn was bad, but we made the contact - thanks Hank! The pond was now producing local qrm. Yes, the bull frogs started to compete with each other for the loudest crooking award! It was so bad I had to tightly fit my ear buds into my ears. Maybe they were warning of the approaching storm? I now cast again into the great ionosphere for another nibble and at 22:05utc I hooked WT8N in ME. Jack, WT8N, and myself were having a great qso, but then the wind hit. I had to cut the qso short and hike back to my truck before the storm hit. By the way, all my QSOs were on 40m as 20m and 30m produced no nibbles. I was really glad to work WQ8RP from the trail as this made my day. Five minutes after driving down the mountain, I hit the storm. I guess those bull frogs do know a thing or two -hi! 72, Ed,WA3WSJ ___ 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
Re: [Elecraft] K3 keyboard
Julian, I am certain the K3 will not accept a USB keyboard. My quick look told me that the connector on the bottom of the K3 is the RJ-11 type, but I have no information on the pin-out format nor the signaling protocol. 73, Don W3FPR Julian G4ILO wrote: A couple of weeks ago it was mentioned that it will be possible to send data modes and presumably CW with the K3 using a keyboard that plugs in to a socket under the radio. Maplin is selling a micro keyboard http://xaddr.com/gf at a reduced price at the moment. It has a USB 1.1 connector. Would this work with a K3? ___ 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
Re: [Elecraft] KX1 amplified external speaker $5
Good find! ... I got 2 of them ... Pix are here ... http://weywalker.home.mindspring.com/ 72/3, Weymouth Walker (Wey) ... K8EAB === - Original Message - > On 5/29/07, Leigh L. Klotz, Jr. <[EMAIL PROTECTED]> wrote: Today I was at Walgreen's Drug Store and saw an external amplified iPod speaker for $5.99 or two for $10. They had both black and white. It's a little bigger than that Macally brand I've used before, but the Macally one required an outboard audio transformer to get enough volume. This one worked right off. It takes two AAA's instead of one AA, but not having to hack it is worth plenty, and it's a lot cheaper. It looks similar to a unit I've seen under the Belkin brand for $20. The brand is "GoStereo," UPC 8-19003-00888-9, distributed by Price Point Accessories, LLC. Pix at http://wa5znu.org/log/2007/05/kx1-speaker.html Leigh/WA5ZNU ___ 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] K3: Cross-Mode Diplomacy
Reading about Riley Hollingworth's Dayton talk about "lightening up" our intra-amateur discussions in 1,2007)>, it occurred to me that a wonderful application of the K3 will be cross-mode diplomacy. Suppose, for example, an RTTY station moves onto an on-going CW traffic net operation. A K3 operator could quickly match the particular TTY mode of the interfering station and politely explain that a CW traffic net is already occupying the frequency. As more and more operators appear on the bands who are Morse-challenged, this could become especially useful. 73, Bruce N7RR ô J. Bruce Prior, PhD ô 853 Alder Street Blaine, WA 98230-8030 360-332-6046 Amateur Radio Station N7RR _ Need a break? Find your escape route with Live Search Maps. http://maps.live.com/default.aspx?ss=Restaurants~Hotels~Amusement%20Park&cp=33.832922~-117.915659&style=r&lvl=13&tilt=-90&dir=0&alt=-1000&scene=1118863&encType=1&FORM=MGAC01 ___ 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] K2/100 ALC
I have a k2/100 that I want to be sure I understand how the ALC should work. It seems it is more responsive than reactive; that is power is increased if allowed, up to the maximum rather that diminished from maximum as a response to some factor, such as high SWR. When I first power the K2 on, if I send a series of fast dots, the ALC seems to respond very slowly to bring the power up to max. It's faster with dashes and very fast with a dead carrier. It will basically remain at full power then unless the SWR changes or something similar, until it is powered off and then back on, at which time it goes through the same process. Is this how it should normally work? The reason I want to be sure is because this k2 had some damage from the wrong cable plugged in at the DB9. I found components damaged on the KSB2 board but everything else seemed to be fine. I removed the KSB2, jumpered the correct connections and put the capacitor back in and CW is working correctly; just this ALC behavior is a little different than I'm used to. I want to be sure there's not another component bad in the ALC circuits somewhere. Thank you! Anthony, NT4X 8:00? 8:25? 8:40? Find a flick in no time with the Yahoo! Search movie showtime shortcut. http://tools.search.yahoo.com/shortcuts/#news ___ 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] re: KX1 amplified external speaker $5
Got 2 of these units just a few minutes ago ... they work well, but the ON/OFF switch is small and on the bottom of the unit, and I will almost certainly forget to turn it off after using ... and drain the 2 x AAA batteries completely ... anybody got any ideas (serious replies only preferred ) to show that the power switch is on? Photos of this amplified stereo speaker attached to my KX1 are here ... http://weywalker.home.mindspring.com/ 72/3, Weymouth Walker (Wey) ... K8EAB Metro Atlanta, GA ___ 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] K3 - Which are Std. Narrow CW & SSB Filters?
Hi Fred, I stayed with the standard 2.7 khz filter for SSB and went with the 1000hz filter for CW. With my antennas here, the best one being a 2 element yagi for 20m at 30 feet, there is little chance that in a contest there will be a signal so big as to unsettle the hardware AGC in the K3 and then cause trouble with the DSP that would be within 1khz of me. On the rare occasion that it happened, I can just move since I so search and pounce in the contests. If you are a contest guy that has big antennas and wants to run (call CQ) and keep your frequency, then you may want some more CW roofing filters of a lower frequency value but the way I see it that's an extreme scenario. On SSB, the standard 2.7 filter is probably optimal as well for the vast majority of normal activity, given the strength of the dsp. My guess is the 1khz filter in my setup here is actually just insurance, I'd probably need it more if I had a neighbor that's a ham and we operate on the same band. === [Elecraft] K3 - Which are Std. Narrow CW & SSB Filters? from [Fred (FL)] [Permanent Link][Original] I ordered the basic K3/10, with one (1) KBPF3 GC Rx filter and the MH2 Mike. Which of the other filters - would one consider the "standard" reasonably narrow SSB and CW filters? In other words - not too narrow, but narrow enough to do their job during crowded CW and SSB band conditions? 73 de Fred, N3CSY ___ 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
Re: [Elecraft] K2/100 ALC
Anthony, That sounds like normal behavior to me. Power control is accomplished in a loop that senses the power output and adjusts as necessary to match the requested power. 73, Don W3FPR Anthony Bowyer wrote: I have a k2/100 that I want to be sure I understand how the ALC should work. It seems it is more responsive than reactive; that is power is increased if allowed, up to the maximum rather that diminished from maximum as a response to some factor, such as high SWR. When I first power the K2 on, if I send a series of fast dots, the ALC seems to respond very slowly to bring the power up to max. It's faster with dashes and very fast with a dead carrier. It will basically remain at full power then unless the SWR changes or something similar, until it is powered off and then back on, at which time it goes through the same process. Is this how it should normally work? The reason I want to be sure is because this k2 had some damage from the wrong cable plugged in at the DB9. I found components damaged on the KSB2 board but everything else seemed to be fine. I removed the KSB2, jumpered the correct connections and put the capacitor back in and CW is working correctly; just this ALC behavior is a little different than I'm used to. I want to be sure there's not another component bad in the ALC circuits somewhere. Thank you! Anthony, NT4X ___ 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
Re: [Elecraft] re: KX1 amplified external speaker $5
What I do is to put a piece of paper in "series" with one of the batteries when packing and remove it to use it. The switches are too easy to turn on accidently. Leigh/WA5ZNU On Sat, 2 Jun 2007 8:37 am, Weymouth Walker wrote: Got 2 of these units just a few minutes ago ... they work well, but the ON/OFF switch is small and on the bottom of the unit, and I will almost certainly forget to turn it off after using ... and drain the 2 x AAA batteries completely ... anybody got any ideas ___ 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] Re: KX1 amplified external speaker $5
the 2 x AAA batteries completely ... anybody got any ideas (serious replies only preferred ) to show that the power switch is on? Wire the On/Off switch so that it also activates (via a relay) an air compressor when turned on. Feed the output of the compressor to a horn from a diesel locomotive (http://www.trainweb.org/mdamtrak199/PImages_000a.htm) mounted to the rear wall of your radio room. If the horn is still sounding when you finish your QRP operating, you left the speaker switch on. John Harper AE5X http://www.ae5x.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
Re: [Elecraft] max power suggested on PSK with K2/100
John Wiener wrote: I just worked KJ5XF who suggested that running 50W PSK would fry the finals. I thought 50 was about max for safe PSK. What's the latest on this? My KPA100 top got too hot to leave your hand on at 50W in a RTTY contest. I put a square of sticky backed velcro on it, the mating square on the center of a 12V muffin fan, and now the heatsink stays cool at 90W on RTTY. I still run the K2/100 at 50W since I'm driving an amp to 500W and need to protect it too, and at 50W, the heat sink is cold. The heat transfer rate issue is still there ... the PA transistors will be hotter than the HS ... but with the HS cold, the transfer rate is increased a lot. 73, Fred K6DGW - Northern California Contest Club - CU in the 2007 CQP Oct 6-7 - www.cqp.org PS: The fan blows down onto the HS, but you all probably knew that. ___ 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
Re: [Elecraft] which do you prefer?
I asked a similar question a few months back - I was mostly interested in help digging out weak signals. Responses pointed overwhelmingly at the KDSP2, so I built one. I haven't played with the filter settings much at all, but I *love* the denoiser. It's exactly what I was looking for, most of the time. That is, sometimes the signal is so weak that software really can't distinguish it from noise :-) 73 de chris K6DBG ___ 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] KX1 RF Power Question
I just finished adding the 30/80m module to my KX1 which has the KXAT1 ATU. While adding the 30/80 module I also installed the output power fix involving the two resistors in the driver/final. The unit seems to work FB but the output power is a bit lower than I expect. I measured the output power with an N8LP LP200 power meter on all four bands with a dc supply voltage, measured during transmit by the KX1 "bat" function of 11.9 - 12.0V. I made the measurements without the atu installed and also with it installed and in tune position. All bands showed SWR=1.0. My question is are these readings reasonable for these conditions? Freq.No ATUw/ATU 3.55 1.57W 1.02W 7.02 2.84W 2.72W 10.11 3.57W 3.36W 14.05 2.83W 2.74W Any ideas/suggestions would be greatly appreciated. 73, Craig K3OOL ___ 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] KAF2 sold
The KAF2 has been sold. Doug W6JD ___ 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] K2: ext battery suggestions?
What are folks using in terms of an external battery for the K2? I'm sure there are lots of options, so please include advantages/disadvantages of each. I've look at the archive and unless I'm doing something wrong, I don't get a lot of hits with respect to the k2. Thanks, de Doug KR2Q ___ 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
RE: [Elecraft] K2: ext battery suggestions?
I assume you are talking about the QRP 15W K2, Doug. I've had excellent results with a 7 AH sealed 12V AGM battery. Mine is made by Interstate, but there are many vendors with similar size and ratings. Size is 6" x 3.75" x 2.5" and it weighs in at a little under 6 lbs. Will run K2 on receive for over 24 hours and I can easily get a day (8 hours) of operating from it on CW. Can also be easily charged with a 10W solar panel. Think I paid about $22 for it a couple years ago. Of course both smaller and larger batteries may be used depending upon if you're carrying it and the length of your operating period. I also have a 2.9 AH PowerSonic that weighs 2.5 lbs that I sometimes use if I won't be out long. Batteries Plus carries a good selection and they may have a store near you. 73 ... Craig AC0DS ___ 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
Re: [Elecraft] K2: ext battery suggestions?
Doug: In order to run the K2 at full power for an extended period of time I use a 73 Amp-hour gelled electrolyte battery and a PG40S SuperPWRgate both from West Mountain Radio. The regular station power supply furnishes charging power. I cannot tell you how long it will last because I've never run it down, but I did some duty cycle calculations that showed that it should last for most of a day of round the clock operation at 100 watts CW, and at least a week at 5 watts. I have found as several other list members have reported, that the voltage drop through the diodes in the PG40S does not lead to any problems for operating the K2. Drawbacks: 1) This is not a cheap configuration, plan to spend close to $300 by the time you include fuses, powerpoles, battery connectors et cetera. 2) It is not conveniently portable; the battery weighs 58 pounds. 73, Steve Kercel AA4AK At 06:07 PM 6/2/2007, DOUGLAS ZWIEBEL wrote: What are folks using in terms of an external battery for the K2? I'm sure there are lots of options, so please include advantages/disadvantages of each. I've look at the archive and unless I'm doing something wrong, I don't get a lot of hits with respect to the k2. Thanks, de Doug KR2Q ___ 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
[Elecraft] K3 Panic Button?
Will the K3 have a (Panic Reset Feature), similar to other complex transceivers? If not, then what's to keep a well intentioned operator from eduring an extended state of anxiety following a series of unfortunate keypresses that may even have been compounded by uninformed knob twisting? Is a power down the only solution for those times when the radio enters into an "unwelcome state"? ;-) == From HF company website === "Panic" on-the-fly reset button. Managed to get yourself confused by pushing buttons and turning knobs? Press and hold the RECALL button and the radio resets parameters to factory defaults without changing the mode or frequency of operation or having to turn off the transceiver. ___ 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
Re: [Elecraft] Recieve antennas in an Urban area
On Apr 22, 2007, at 11:53 AM, Richard Thorne wrote: I have a small back yard so the larger K9AY loops are not an option. You don't need much space for a set of K9AY loops. Gary used 85 feet for the loop length, but you can use a shorter length, too. I have a single K9AY loop of 44 feet that is mounted under a small oak tree. It works very well on 80m, to a lessor extent on 40m and 160m. If you have a shrub or tree that can support a wire 10 feet or so high, then you should be able to configure a K9AY loop. Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED] Quote: "Not within a thousand years will man ever fly!" -- Wilbur Wright, 1901 ___ 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
Re: [Elecraft] RTTY Problems
On Mar 19, 2007, at 5:36 AM, Dohn wrote: If one centers their filters at 2210 Hz in RTTY mode for use in RTTY, then is RTTY no longer the mode of choice for PSK31? Would you just use USB for PSK31 and adjust your speech compression? Are RTTY and PSK31 both useable with RTTY mode with filters centered around 2210 Hz? PSK31 can be used at any center frequency, so 2210 Hz won't be a problem. I use Cocoamodem and MMTTY for RTTY, and have adjusted them for frequencies of 1415 and 1585 for Mark and Space, respectively. This gives me a 1500 Hz center frequency, which is perfect for using the DSP filters as well. One problem with using 2210 Hz as a center frequency with the K2 is that you may not have sufficient BFO range to center your filters for both sidebands. You may have to modify the BFO to get greater range. Having both sidebands centered is important. Even though you might only use the LSB sideband for RTTY, remember the sidebands are swapped on 15m and above due to the inversion. Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED] Quote: "Not within a thousand years will man ever fly!" -- Wilbur Wright, 1901 ___ 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
Re: [Elecraft] spectrogram for mac or linux?
On Mar 17, 2007, at 12:08 AM, sergio t. ruiz wrote: is there a suitable program for mac or linux? For the Mac, I use Cocoamodem. http://homepage.mac.com/chen Just bring up the config window to get a nice spectral display. You can temporarily set mark and space frequencies as markers. Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED] Quote: "Not within a thousand years will man ever fly!" -- Wilbur Wright, 1901 ___ 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
Re: [Elecraft] Spilling the HF beans .....
On Mar 3, 2007, at 11:23 AM, John Young wrote: If my memory is still working I recall Osbone made a very nice CP/M computer in the dark ages. When the owner announced that the next model would be IBM PC compatible, all orders for the CP/M system ended and the company went broke. In the business literature, this is known as the "Osbourne Effect" for this reason. Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED] Quote: "Not within a thousand years will man ever fly!" -- Wilbur Wright, 1901 ___ 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
Re: [Elecraft] Tuning Clunks was:K2 compared to others rigs
On Mar 24, 2007, at 1:14 PM, Darrell Bellerive wrote: I agree that the synthesizer "tuning clunks" every 5 kHz in the presence of strong signals needs to be addressed. Agreed. It would be really nice to eliminate these. When I'm tuning the bands and I encounter one of these clunks, I often tune back to see what the signal was that I missed. I've noticed that the rig will often clunk one way, but not the other. Another related issue is the appearance of phantom signals while keying CW under QSK. This is especially apparent during contests. You'll hear someone sending something, so you'll stop sending -- and the signal disappears. Kinda defeats the purpose of all that big dynamic range Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED] Quote: "Not within a thousand years will man ever fly!" -- Wilbur Wright, 1901 ___ 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
Re: [Elecraft] a K3 owner's contest reflections on the K2
On May 27, 2007, at 8:57 PM, DOUGLAS ZWIEBEL wrote: 3. What's wrong with the K2 for cw contesting (IMHO) A. The QSK is almost worthless. At the first setting above Ø.ØØ, you just can't hear between the dits and dahs. Depends on how fast you are sending. But, I agree, you really can't hear much between elements, only between characters and words. C. The AGC is not set up correctly. Weak signals are, well, too weak (audio) and strong signals blow my ears off. Something is wrong with your K2. The K2 has, hands down, the best AGC action I have heard on any radio, bar none. It is very difficult to tell the very strongest signals from the weaker ones without looking at the S-meter. Now, if you turn the AGC off, you'll get the effect of blowing your ears off. I don't use RIT/XIT in the contest (since I"m qrp, I don't "run" much), so I don't miss the lack of the CLEAR button. With 100w, you can run a bit more. RIT is essential. Having to clear by turning a knob to a given position is a pain. I don't see much of any use for XIT, however. I use the "400hz" filter (forget what it is exactly) and it is wide enough so I can hear callers substantially off frequency without RIT'ing. For my style of contesting, I NEVER change the XFIL selection (good ears, I guess). I have my filters set up for 1000 Hz, 400 Hz, 160 Hz, and OP1. I usually tune the bands with the 1000 Hz setting. If the contest gets really crowded, 400 Hz does the trick. I also use some DSP filters along with the crystal. Anyhow, the K2 is a might fine contest radio for qrpers Or even for Low Power or QRO use -- the K2/100. I cannot think of a better radio VALUE for contesting. This is hands-down the clear winner, probably over the K3 also. The K3 is (hopefully) also a great VALUE for contesters, but the K2 is just impossible to touch. Likely. Still, I think the K3 is closer to the radio I want. When I get to the point I can afford one, I'll buy one. OH yeahI worked 896 stations, 439 prefixes, and a claimed score of 991,262. Not too shabby for a $600 box. Good score! Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED] Quote: "Not within a thousand years will man ever fly!" -- Wilbur Wright, 1901 ___ 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
Re: [Elecraft] K2: sending PSK31
On May 20, 2007, at 4:36 PM, Peter Wollan wrote: The documents on the Elecraft site suggest that sending PSK31 requires a cable to the K2 mic plug, with a 10:1 voltage splitter to reduce speaker voltage to mic levels, and a PTT switch which could be as simple as a manual toggle. Is the PTT switch needed? Has anyone used vox on the K2 for this? VOX works with the K2. Sometimes the VOX will become slightly deaf, though. The thing I don't like about using VOX is that you have to drive the transmitter slightly harder in order to get the VOX to reliably trip. The K2 VOX isn't the best design in the world. I'm using the excellent Cocoamodem program on a Macbook, so far only for receive. If you can wire up a serial port (I use a Keyspan USB-to-Serial adapter), you can use CocoaPTT for this purpose. It's a little program written by Kok Chen that will key a serial port pin (DTR) when it is time to key the transmitter. Works great with Cocoamodem. I've also used the K2 with MMTTY and N1MM software. N1MM is interesting that it can key the transmitter with a serial port command (not just DTR), and that seems to work pretty well, too. Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED] Quote: "Not within a thousand years will man ever fly!" -- Wilbur Wright, 1901 ___ 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
Re: [Elecraft] K3 IF/AF Dsp questions (comparisons)
On May 17, 2007, at 11:49 AM, Vic K2VCO wrote: S9 -- above S9 on my meter S8 -- S7-S9 on my meter S7 -- S4-S6 on my meter S6 -- S3 on my meter S5 -- No deflection to S1 on my meter S4 -- No deflection, but above noise level S3 -- No deflection, in and out of noise S2 -- No deflection, mostly in noise S1 -- I know you're there, but too weak to get more than occasional letters. This is exactly what I do! My S5 is a bit higher, but, yeah, if there's any indication on the S-meter, you are S5, easy. Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED] Quote: "Not within a thousand years will man ever fly!" -- Wilbur Wright, 1901 ___ 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
Re: [Elecraft] Solid State Amps
Lee - Just a couple of additional points - that Jim, N2EY did not mention in his very good reply. 1. Glass RF tubes ( 811 / 572B, 3-500Z) are no longer manufactured in the US in large quantities. Eimac and other mfg. moved to ceramic RF tubes and sold off their glass tube production. Russia, Eastern Europe and China have the majority of the glass RF tube production -- which you can see at RF Parts. The quality of glass tubes has also become a concern -- I regularly read stories of 'bad Chinese tubes' , Svetlana 572B with smaller plate areas than other 572B tube mfg., etc. 2. Sweep tubes are at End of Life (EOL). There are conversions to EL509 or EL519 Eastern European TV sweep tubes --- but it is still a sweep tube! Due to these 2 points many previous amplifier owners are looking for something that is "easy of operate" and "works" --- without having to worry about parasitic suppressors, and religious debates since 1990 about problems with some glass tube amplifiers. Lastly, the new 8877 designs, such as the new Alpha are not cheap and have exceeded the pocketbook ($$) of many hobbyists. w9gb - Original Message - From: "Lee Buller" <[EMAIL PROTECTED]> To: "Elecraft Reflector" Sent: Friday, June 01, 2007 9:01 AM Subject: [Elecraft] Solid State Amps When I attended Dayton this year and reading the magazines, I see there is now a great interest in solid state amps. I thought that these amps were...well...not as efficient as tube amps thus not being attractive to hams. I guess we wanted BIG iron for an amp. Ameritron has two amps out for quite some time...the 500 and 600 with the 600 now coming with a switching PS. It seems people who own the 600 watt model like them very much. Even "E" has the contesters contest amp and it is solid state. So, what has changed? Have the SS Amps gotten more efficient? Higher voltages? What effects the efficiency of these amps where now there seems to be a market for the Japanese and the Italians. Now most radios provide 100 watts output using transistors and the tube finals in rigs have long been gone. So, is this just a natural evolution of amplifiers or is some new technological breakthrough happened in high powered solid state amplifiers? Lee - K0WA In our day and age it seems that Common Sense is in short supply. If you don't have any Common Sense - get some Common Sense and use it. If you can't find any Common Sense, ask for help from somebody who has some Common Sense. Is Common Sense devine? ___ 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] K3 : Sensitivity
Question from today at local hamfest: On the webpage: Is it possible to phase lock the two K3 receivers? They run off the same reference oscillator and are phase locked. Do you loose sensitivity on either receiver doing this way? Not sure I understood his question, but is volume level effected? Dwight Agnew - AI4II 9335 King George Dr. Manassas, VA U.S.A. ___ 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] Re: K3 : Sensitivity
Hi Dwight, The main and subreceivers are are always locked to the same reference. This has no bearing on the volume levels of the two receivers. 73, Wayne N6KR Dwight wrote: Is it possible to phase lock the two K3 receivers? They run off the same reference oscillator and are phase locked. Do you loose sensitivity on either receiver doing this way? Not sure I understood his question, but is volume level effected? --- 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
[Elecraft]Re: K3 - Which are Std. Narrow CW & SSB Filters?
Dear OM Fred, You ask which K3 roofing filters are optimal to start with. In my humble opinion, the answers you get will be very subjective. They will depend a lot on the particular types of operating that the respondents do, and their particular past experiences with filters and radios they have used. Of course, since the K3 is not yet out, nobody can really say anything definitive. For what its worth, here is what I did. I ordered my K3/100 with just the stock 2.7 khz SSB filter, and being mostly a CW guy, the 5-pole 500 hz filter. Why the 500 hz and not the narrower ones for CW? It is just personal preference. I have owned several radios in the past, in which I had installed both the available 500 hz and 250 hz filters. I found that I hardly ever used the 250 hz filters with those radios. I just didn't like how the radios sounded with them. As another example, in my two K2s the filters are set upfor 1 khz, 700 hz, 400 hz, and 200 hz. However, ninety-nine percent of the time, I use them at 700 hz. Others on the list may have different experiences/opinions. But in the end, it comes down to a matter of personal preference. Happilly, Elecraft offeres us a lot of choices. I can always add a narrower (or wider) filter later on to deal with special situations, should they arise. And I will read with interest about the experiences/opinions of my fellow Elecrafters on this reflector once the K3 is out. Hope this helps. 73, John, W2GW ___ 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] KX1: GoStereo Speaker
"Find of the Year" award goes to WA5ZNU for this neat little speaker. It's PERFECT for the KX1. As others have pointed out, they come two to a package for $10 at Walgreens. Both worked fine with all wires and components securely soldered. However, the battery cover on one unit snapped tight without batteries, but snapped "loose" when they were in the compartment. The problem resulted from minuscule excess "chads" of plastic on the inside of the curved battery cover where the cover was supported during molding. Needle-nosed cutters [FedExed overnight from the RNC] corrected the "hanging chad" issue. Many thanks go to Leigh for being so observant. 73, Kent Trimble, K9ZTV Jefferson City, MO ___ 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] Elecraft CW Net Announcement
Good Evening, It is interesting what webs of contact we create by meeting and learning of other people. Today began with me leaving the house shortly before 7 AM to hook up with NM7N in Buxton. On the way I was met by another buck in velvet who posed quite nicely as I passed by. (Four to six points on each side in a small basket.) Karl drove me out to Seaside, Oregon stopping along the way to eat some breakfast. We got to our local hamfest early to scrawl our names on our tags and wait for the doors to open. At that point I started introducing Karl to folks I knew in the crowd. He found at least one of his neighbors. Then the doors opened. He and I walked rapidly until we found our goal. Already the K3 was swarmed but I was greeted warmly by Roger, WA7BOC, who was off to one side of the pileup. He and I had worked an Elecraft booth a few years back and had a great time. The year before that I had met Lisa, Ron, AC7AC, and Carter, N3AO while working another booth. The year before that I was in Albuquerque and yet again worked for the Elecraft bunch while earning my first polo shirt. I introduced Karl to Roger and then was greeted by Lisa. I introduced Karl to her and they had a great chat about all the rigs he'd been building for Elecraft for folks unable to fashion their own. I got the chance to say howdy to Ron, AC7AC with a simple wave. He was deep in conversation with a prospective buyer so I got a wave in return. Later I was able to introduce Karl to Ron and then start talking with AB7R, Greg about the object of our desire: the K3. Folks, it looks quite nice and sounds even better. The FT DX 9000 was only a booth or two away but got merely a passing glance on the third trip through that isle. From what I heard (from more than one person) it would only cost more but not give me even close to the performance of the K3! These opinions were not from the Elecraft employees, mind you, but of the folks who have used their rigs and know how they sound. During the course of the day I got more information about the K3 and about how the folks at Elecraft are doing. Lisa was kind enough to say folks like me. H ... seems like there may be a few of you who do ;) I received a package in the mail today containing some QSL cards in my name from Ty, W1TF. I've not had time to print any of my own and have not found a local printer to make some for me. Pat (my late beloved) used to make a few new ones for me to commemorate whatever was occuring during my contacts. Since she has been unable to make any more I've not been able to respond in kind to those sending me cards. Now I can. Thank you Ty! Karl and I both got a chance to work the station at the hamfest on CW and SSB. Yes, SSB; I had to do it for some reason. After a few contacts I figured out how to get the rig to send CW. That took some doing because the Bencher paddles were set on huge spacing and the keyer was set to 5 wpm. After I got out the Allen wrench and the other op got the rig to speed up a bit I was able to make a contact or two on CW. Then I got pushed out by a newly licensed pre-teen to make a few SSB contacts. Later Karl got on and was about to run a string when another SSBer came in the booth. While Karl was making contacts I got to meet a few more folks in the booth. I may get to work field day CW with them at a local park. And I do mean local; it is just down the mountain from me!! Less than fifteen minutes away I could have FD food, conversation, and CW operations. I think I will take my K2 so they have a real radio to use :) Earlier in the week I was able to work into the Midwest on 20 meters with very good signals both ways. Forty meters seemed to be working a little today and better yet this evening. Tomorrow may be a good day to work across the continent to hear you all checking in. As always I will be here and hope to hear as many of you as I can. Because of Elecraft I've met a great group of folks and hope to continue meeting more of you. Thank you! Tomorrow: 1) Hail signs (first letter or two of the suffix of your call) 2) NCS help (as well as QSP/QNP help) Please join us: Sunday 2300z (Sunday 4 PM PDT) 14050 kHz Monday 0200z (Sunday 7 PM PDT) 7045 kHz Kevin. KD5ONS P.S. Veeries are serenading Sam who is sleeping on the deck. A tree which had been leaning since the storm in December interrupted this note by crashing to the ground. The slight breeze we have now was enough to allow it to clear its last supporting branch. The weather has been quite pleasant for the last few days. Summer, and the dry season, are almost here. KJR ___ 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.): h
Re: [Elecraft] K2: ext battery suggestions?
In a message dated 6/2/07 6:07:47 PM Eastern Daylight Time, [EMAIL PROTECTED] writes: > What are folks using in terms of an external battery for the K2? I have generic 7 AH and 12 AH gel cells for when I take the K2 away from AC. I also have a zero-cost charger for them. It's an old, small UPS in a plastic case that was tossed because its batteries were dead. I opened it up and extended the battery wires out through a slot filed where the case halves meet. On the far end of the wires I put Anderson Power Poles, same as on the K2 power cable and the short cables I put on the batteries. To charge a battery, I just hook it to the UPS and turn on the UPS. It brings the battery up to full charge in a few hours, and then trickle charges it. 73 de Jim, N2EY ** See what's free at http://www.aol.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
RE: [Elecraft] Elecraft CW Net Announcement
Was great meeting you today Chris..I mean Kevin. :) Sorry about the little joke with the transvertersI really did think you were pulling my leg at first so was just following suit. :) I had a great time talking with everyone about the K3 and showing off it's many attributes. Wish I could stay for tomorrow but I have to get home to the critters by feeding time or they start eating fence and other stuff not very good for them. 73 Greg AB7R -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Kevin Rock Sent: Saturday, June 02, 2007 8:29 PM To: Elecraft Subject: [Elecraft] Elecraft CW Net Announcement Good Evening, It is interesting what webs of contact we create by meeting and learning of other people. Today began with me leaving the house shortly before 7 AM to hook up with NM7N in Buxton. On the way I was met by another buck in velvet who posed quite nicely as I passed by. (Four to six points on each side in a small basket.) Karl drove me out to Seaside, Oregon stopping along the way to eat some breakfast. We got to our local hamfest early to scrawl our names on our tags and wait for the doors to open. At that point I started introducing Karl to folks I knew in the crowd. He found at least one of his neighbors. Then the doors opened. He and I walked rapidly until we found our goal. Already the K3 was swarmed but I was greeted warmly by Roger, WA7BOC, who was off to one side of the pileup. He and I had worked an Elecraft booth a few years back and had a great time. The year before that I had met Lisa, Ron, AC7AC, and Carter, N3AO while working another booth. The year before that I was in Albuquerque and yet again worked for the Elecraft bunch while earning my first polo shirt. I introduced Karl to Roger and then was greeted by Lisa. I introduced Karl to her and they had a great chat about all the rigs he'd been building for Elecraft for folks unable to fashion their own. I got the chance to say howdy to Ron, AC7AC with a simple wave. He was deep in conversation with a prospective buyer so I got a wave in return. Later I was able to introduce Karl to Ron and then start talking with AB7R, Greg about the object of our desire: the K3. Folks, it looks quite nice and sounds even better. The FT DX 9000 was only a booth or two away but got merely a passing glance on the third trip through that isle. From what I heard (from more than one person) it would only cost more but not give me even close to the performance of the K3! These opinions were not from the Elecraft employees, mind you, but of the folks who have used their rigs and know how they sound. During the course of the day I got more information about the K3 and about how the folks at Elecraft are doing. Lisa was kind enough to say folks like me. H ... seems like there may be a few of you who do ;) I received a package in the mail today containing some QSL cards in my name from Ty, W1TF. I've not had time to print any of my own and have not found a local printer to make some for me. Pat (my late beloved) used to make a few new ones for me to commemorate whatever was occuring during my contacts. Since she has been unable to make any more I've not been able to respond in kind to those sending me cards. Now I can. Thank you Ty! Karl and I both got a chance to work the station at the hamfest on CW and SSB. Yes, SSB; I had to do it for some reason. After a few contacts I figured out how to get the rig to send CW. That took some doing because the Bencher paddles were set on huge spacing and the keyer was set to 5 wpm. After I got out the Allen wrench and the other op got the rig to speed up a bit I was able to make a contact or two on CW. Then I got pushed out by a newly licensed pre-teen to make a few SSB contacts. Later Karl got on and was about to run a string when another SSBer came in the booth. While Karl was making contacts I got to meet a few more folks in the booth. I may get to work field day CW with them at a local park. And I do mean local; it is just down the mountain from me!! Less than fifteen minutes away I could have FD food, conversation, and CW operations. I think I will take my K2 so they have a real radio to use :) Earlier in the week I was able to work into the Midwest on 20 meters with very good signals both ways. Forty meters seemed to be working a little today and better yet this evening. Tomorrow may be a good day to work across the continent to hear you all checking in. As always I will be here and hope to hear as many of you as I can. Because of Elecraft I've met a great group of folks and hope to continue meeting more of you. Thank you! Tomorrow: 1) Hail signs (first letter or two of the suffix of your call) 2) NCS help (as well as QSP/QNP help) Please join us: Sunday 2300z (Sunday 4 PM PDT) 14050 kHz Monday 0200z (Sunday 7 PM PDT) 7045 kHz Kevin. KD5ONS P.S. Veeries are serenading Sam w
[Elecraft] Blue Moon QRP Hike Report
Hello all, I decided to beat the traffic and left early for my Blue Moon QRP Hike on Friday. I arrived at the Rt.183 AT Trailhead around 20:30utc. I then hiked in to the pond area and surprized a rather large heron bird and a big old bull frog. The bird took off into the air and the frog just jumped into the pond with a loud splash! I set up in the shade of the trees that surrounded the pond on the west side. I started operating around 20:45utc or so. By 21:12utc I snagged my first catch of the day -hi! It was Dan,KB6NU, from MI who gave me a 459. At 21:38utc my pond fishing produced another catch. This was a big one for me WQ8RP from MI. By now the qrn was bad, but we made the contact - thanks Hank! The pond was now producing local qrm. Yes, the bull frogs started to compete with each other for the loudest crooking award! It was so bad I had to tightly fit my ear buds into my ears. Maybe they were warning of the approaching storm? I now cast again into the great ionosphere for another nibble and at 22:05utc I hooked WT8N in ME. Jack, WT8N, and myself were having a great qso, but then the wind hit. I had to cut the qso short and hike back to my truck before the storm hit. By the way, all my QSOs were on 40m as 20m and 30m produced no nibbles. I was really glad to work WQ8RP from the trail as this made my day. Five minutes after driving down the mountain, I hit the storm. I guess those bull frogs do know a thing or two -hi! 72, Ed,WA3WSJ ___ 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
