Re: [Elecraft] Talking filter Bandwidths
Morning Deni, The bandwidth of a filter (in whatever form) has always been taken to mean the bandwidth between the upper and lower 3db points of the filter's attenuation vs frequency response, the 0db point being at the frequency of least attenuation in the pass band. One hopes that the passband ripple is much much less than 3db !! Other bandwidths are used, but the dbs of attenuation must always be specified. If the attenuation is not specified, then the 3db bandwidth is used. The bandwidth at 6db attenuation is used together with the bandwidth at 60db attenuation to determine the filter's shape factor, a number 1. Very often the bandwidth at 80db of attenuation is used instead of that at 60db attenuation, but the dbs of attenuation must always be specified. There are good reasons for using the 6db figure, but I won't confuse the issue. 73 GeoffGM4ESD (near Cupar, Fife). - Original Message - From: Deni [EMAIL PROTECTED] To: elecraft@mailman.qth.net Sent: Saturday, November 13, 2004 7:45 AM Subject: [Elecraft] Talking filter Bandwidths I have recently replaced my CW Xtal Fiter set and done a realignment using Spectrogram. I'm now attempting to measure my selected filter bandwidths and using the -6dB points, is this incorrect ? Is -3dB now the preferred or accepted points for BW measurement specs? Why is there some apparent confusion here, any thoughts? 73, Deni K21188 F5VJC / GM3SKN ___ 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] 6th Annual QRP Contest Calendar for 2005
Hello, When ordering the calendar, please make sure you use the correct PayPal button. There is a US VE button and now there is a DX button. Shipment of calendars should be at the end of the month. www.n3epa.org 72 Ron de N3EPA EPA QRP Club El Presidente' [EMAIL PROTECTED] www.n3epa.org ___ 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] It works again :-)
Hi all, Just thought I would let you know I fixed my problem with the 60m and 160m installs. I checked and rechecked everything and all seemed fine which had me scratching my head. In the end, the problem was the seating of the 60m board. I think I had the 8 pin header connected but not the 3 pin. It is a swine to get right and you can't get your fingers in to check but once I reinstalled it all sprung into life, joy :-) Now I could get onto the alignment. I tuned everything but I cannot get the 160m board within the 1v to 7.5v range and the 60m range is very low. These are the readings I am getting. I have ignored those bands where the readings are well within spec. 1800 - 3.1v 2000 - 7.99v 3500 - 2.6v 4000 - 7.49v 5300 - 1.0v 5450 - 1.45v All the other bands are between 2.0v and 4.8v. I shifted the vco to get 60m in spec and I guess this is why 160m is out but why does the 60m band have such low values? I cannot get more than about 6w out on 160m. Any thoughts? Ian -- Ian Maude G0VGS Morecambe Lancs UK | [EMAIL PROTECTED] Sysop of GB7MBC, the Morecambe Bay Cluster Running Linux and DXSpider | K2 #4044 Find out about Summits on the Air! Visit the SOTA web site at http://www.sota.org.uk ___ 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] It works again :-)
Ian, Double check C75 on the RF board - be certain it is 470 pf (471). You may also want to check all the VCO range capacitors (C71 thru C75) while you are at it too - you did change C71 to 120 pf did you not? Nothing in the bandpass filter for 160 meters should have changed due to the addition of the K60XV, so perhaps your 160 meter low power problem was present before the K60XV addition. 73, Don W3FPR - Original Message - Now I could get onto the alignment. I tuned everything but I cannot get the 160m board within the 1v to 7.5v range and the 60m range is very low. These are the readings I am getting. I have ignored those bands where the readings are well within spec. 1800 - 3.1v 2000 - 7.99v 3500 - 2.6v 4000 - 7.49v 5300 - 1.0v 5450 - 1.45v All the other bands are between 2.0v and 4.8v. I shifted the vco to get 60m in spec and I guess this is why 160m is out but why does the 60m band have such low values? I cannot get more than about 6w out on 160m. ___ 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: K2 #4472 4 mhz alighment resolved
I finaelecraftlly got a zero beat on the www 10mhz signal and the K2 display reads 1000 at the beat tone. I had some problems as shown below. ___ 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] two problems K2 sn 4421
Hi All Have two problems with my new K2 1) Current limit operates at 2.5A where-ever I set the limit 2) Filter 4 always sets at approx 1kHz bandwidth, using Spectrogram. Set up okay initially, but now faulty Grateful for any suggestions 73 Bryan G3AKF ___ 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 CAT commands
I need a list of K2 CAT commands including the commands that represent the pressing of a key on the K2. I can't find it on the Elecraft site but I know it exists somewhere. Can someone give me a lead to where it is? Hi Chas, Did you look for this manual? http://www.elecraft.com/manual/KIO2 Pgmrs Ref rev E.pdf 73 Wolf, DL2WRJ -- * Registered Linux user #37136 http://counter.li.org * Suse Linux 9.1pro, AMD Sempron 2800+, SIS 748, * Matrox MGA-450 1GB/120GB * http://www.dl2wrj.de ___ 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] Talking filter Bandwidths
Deni In the past, the -6 dB number was usually paired with a -60 dB number to calculate the shape factor of the filter. It would be the -60dB bw divided by the -6 dB bw, to give a shape factor somewhere between 1 (vertical sided passband) and maybe 2 at the worst. Not sure where the -3dB comes from, maybe advertising? :-) Makes the filter bandwidths look better. 73, Bob N6Wg ___ 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] Neat Backpack idea
Just found this in an odd search and thought some others might be interested in it as well. A solar backpack, they say it provides 2.5 watts, might be an interesting way to keep a small SLA battery Charged, or maybe even the K2 on it's own as well as carry some of the other operating needs in one package Is a tad costly at the 130 dollar mark, but still a neat idea HI HI http://www.eclipsesolargear.com/Backpacks.asp 73 John N5BSD ___ 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] Talking filter Bandwidths
Bob and all, The proper point is the 'halfway' point - half the power is -3 dB (10 log 0.5) but half the voltage is -6 dB (20 log 0.5). The -3dB point would be used when plotting power curves, while the -6db point is correct for voltage or current plots. Typical filters usually assume a power curve (-3 dB) points unless stated otherwise. A plot of an IF filter could be either depending on the measurement techniques. We are moving closer to consistancy with the use of dBm in stating power gain (or loss) within equipment like receivers, but I don't think everyone is on board yet. Yes, the advertizing folks sometimes take advantage of differences like this to make their product look better - called 'specsmanship' in some engineering circles. You have to read the really fine print. 73, Don W3FPR - Original Message - Not sure where the -3dB comes from, maybe advertising? :-) Makes the filter bandwidths look better. ___ 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] PSK31 question
Question about transmitter drive setup. I'm about to go on the air with the K2 Power knob full clockwise, and the soundcard drive (Digipan) set for about 1A draw on key down. Is that right? Dan / WG4S / K2 #2456 with KPSK2, er, ah KSB2 ___ 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] PSK31 question
I never ran across that method .. what I did (and seems to work OK and sound reasonable) is to set power knob to desired power, then adjust sound card level to just where agc blinks first LED .. de John W1RT #3906 On Sat, 13 Nov 2004 15:52:33 -0500, Dan Barker [EMAIL PROTECTED] wrote: Question about transmitter drive setup. I'm about to go on the air with the K2 Power knob full clockwise, and the soundcard drive (Digipan) set for about 1A draw on key down. Is that right? Dan / WG4S / K2 #2456 with KPSK2, er, ah KSB2 ___ 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] K2 feature request
I have a request for a K2 feature. I have a K2 with KPA100 and KAT100 in separate EC2. Currently, if the KAT100 is installed, the KAT2 just switches to through mode (CALP), fixed to ant1. I recently bought an amp and find that neither the amp, nor a typical antenna, is cleanly 50 ohms and hence there's work for the tuner. If I enable the amp, I need to autotune to the input impedance of the amp, if I leave it offline, I need to tune to the impedance of the antenna. This requires two different tuner settings. I note that the KPA100 has a separate pin to drive the PA key line which means that, through software, the K2 can 'know' whether or not it puts the amp in-line: if the software doesn't key the key line, you're running barefoot. Instead of the current two antenna settings, I believe more choices are possible: A. KPA100/KAT100, ANT1, key PA line This is the normal case and puts the PA in-line. B. KPA100/KAT100, ANT1, don't key PA line This leaves the PA in through mode and makes the thing run barefoot. Note that the K2 needs separate KAT100 settings for A and B as one is obviously driving different things C. KPA100/KAT100, ANT2 I've found that using two antennas sometimes helps, I've ran with a quad and a W3DZZ D. KAT2 ANT2, no KPA100/KAT100 For transverters and the like I note that the various SWR bridges have outputs that can be three-stated, just like currently happens. I really, really want more flexability in my antenna settings. Also note that all four settings would need separate, to-be-memorized tuner settings. Oh, and when you'd hack on the antenna selector code, perhaps the code can be improved: sometimes the KAT2 is stuck in CALP mode after attaching a KPA100 at a previous session. It would be nice if it would switch back to regular AUTO mode if the KPA100 isn't there. What do others think? Geert Jan PE1HZG ___ 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 Control Board
K2 manual in parts listing shows an R22 , an 82K resistor. I see no reference to this in the control board assembly or a place on the board , or I missed it. Glenn ___ 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 Control Board
Look at the 3rd step, page 15. R22 replaces a silk screened diode. de Joe, aa4nn -- : [Elecraft] K2 Control Board K2 manual in parts listing shows an R22 , an 82K resistor. I see no reference to this in the control board assembly or a place on the board , or I missed it. Glenn ___ 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] PSK31 question
Ha! I fire up PSK31 from time to time, make a contact, then it's back to CW for the next six months! Some modes, like some gear, are fun to tinker with in order to master the techniques of making them work, but that doesn't mean that I'll enjoy using them on the air all that much. As for keeping the audio below ALC threshold in SSB modes, the only issue I can see is when the K2 is able to deliver more than rated power (10 watts for a basic K2). At power levels above the rated maximum the finals may not be as linear as they should, producing more distortion. So if all your K2 can make with the POWER control fully CW is 10 watts (like many of them on the upper end of 10 meters), then it's not a problem. But down on 40 meters the finals can be over-driven. That's why they make more than 10 watts of RF on that band. That's fine for CW in which linearity in the finals is not important, but not good for SSB which requires a linear power amplifier. I've never seen any distortion numbers from Elecraft, but only noted that the manual cautions against operating with the POWER control above that which the K2 could deliver, or trying to run more than 10 watts output in SSB with a QRP K2. Ron AC7AC ___ 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] That should be Shortwave Receiver Kit HIHIHi
Hi Elecraft Gang Is there a plan in the works for a shortwave receiver kit??? 73.de.Fred N9TA PS: Next time I'll wear my glasses when I'm emailin' ___ 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] PSK31 question
What I do is to set the power for 5watts in qrpmode and adjust PC to the point where output just drop a little bit. I think this will be almost the same as set power for 10 watts and adjust pcoutput for 5watts. Somehow I have never liked the second method because I like to limit my TX the hard and secure way. Some also advice to set tone for psk31 to a frequency so high that harmonics is outside the passband the ksb2 is capable to send in. If you have basic KSB2 you could set tone to 1200-1300hz. Harmonics will then be attenuated. But I have tried to send 1000hz tone with 5watt setting and pcoutput just at droppoint. Nothing sounds wrong on other rx in schack. No harmonics. 73 de Tom LA1PHA - Original Message - From: Dan Barker [EMAIL PROTECTED] To: Elecraft elecraft@mailman.qth.net Sent: Saturday, November 13, 2004 9:52 PM Subject: [Elecraft] PSK31 question Question about transmitter drive setup. I'm about to go on the air with the K2 Power knob full clockwise, and the soundcard drive (Digipan) set for about 1A draw on key down. Is that right? Dan / WG4S / K2 #2456 with KPSK2, er, ah KSB2 ___ 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
Re: [Elecraft] K2 Control Board
Dan, Don't throw that resistor away yet!!! Yes, I agree that Acrobat Reader is useful for stuff like that, BUT ... Check the 3rd step on page 15 of your Rev F manual - you will see that R22 82k is placed into the holes marked 'D3'. 73, Don W3FPR - Original Message - No r22 on Control board. there is an rp2 that's 82K. Viva Acrobat! Download the PDF and use searches! It rocks! ___ 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 feature request
Geert Jan de Groot wrote: I recently bought an amp and find that neither the amp, nor a typical antenna, is cleanly 50 ohms and hence there's work for the tuner. If I enable the amp, I need to autotune to the input impedance of the amp, if I leave it offline, I need to tune to the impedance of the antenna. This requires two different tuner settings. You might try this: connect the two antenna outputs of the KAT100 to a 'tee' connector and take the output from the common to the amp. Then tune up the KAT100 with the amp offline using the ANT1 setting. Switch the amp online and tune the KAT100 using ANT2. Then you will have two pre-tuned settings per band, one for the amp and one direct to the antenna. It's not automatic, but at least you won't have to wait for the KAT100 to tune when turning the amp on or off. -- 73, Vic, K2VCO Fresno CA http://www.qsl.net/k2vco ___ 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] Shortwave Reveiver kit ???
If so, I will buy one...at least one, maybe TWO!!! 73 John K7FD http://webpages.charter.net/peanut ... all shortwave, all the time! -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Fred Bennett N9TA Sent: Saturday, November 13, 2004 1:51 PM To: Elecraft Subject: [Elecraft] Shortwave Reveiver kit ??? Hi Elecraft Gang Is there a plan in the works for a shortwave receiver kit??? 73.de.Fred N9TA ___ 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
RE: [Elecraft] Shortwave Reveiver kit ???
The KX1 covers a lot of the SWL frequencies around the 40/30 meter bands. Not a true SWL receiver, but it does a great job with both SSB and AM and fits in your pocket. And, of course, if you get bored with SWL-ing you can do a little Hamming on the 40/30/20 meter CW bands too... Ron AC7AC ___ 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 on Lancaster County Covered 3- Bridge Tour
Hello all, Look for me tomorrow 11/14 activating three Lancaster County Covered Bridges. 7.280 and 14.280 + - qrm 72/73, 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
[Elecraft] Elecraft CW Net Announcement
Good Evening, Another hectic week in Oregon but the weather is quite nice above 1200 feet. Down below it is gloom and mist but up here the stars are bright and the light pollution is minimal. Hopefully the bands will be as great as they were on Thursday and Friday. Then we can have fun on the two nets checking how things are going around the continent. Please join us : Sunday 2400z (Sunday 4pm PST) 14050 kHz Monday 0300z (Sunday 7pm PST) 7045 kHz Visit our web site: http://ecn.visionseer.com/ for further details. Thank you for the web space Dan. No special requirements or exchanges necessary on ECN just check in and see what happens from there. Take care all and see you tomorrow evening, Kevin. KD5ONS ___ 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] Talking filter Bandwidths
For a lot of us (I have seen this discussed before) the 3 db points are fairly useless as a real predictor of performance. The 6 and 60 db points do a much better job, telling where the skirts start, and where they are diving. I will never forget my disappointment in the Collins 500 kHz CW mechanical filter (3 db) for my MP. I just assumed. Best thing is to get a sweep of the passband. Funny how those are so hard to get for filters unless you're getting them from INRAD's webpage. They have the Collins curves as well. You can compare curves and see yourself. Interesting browsing. You can see from the curves whether the skirts are still going strong and diving past 60 db or whether they're dying and on the way to having a poor ultimate rejection. 73, Guy - Original Message - From: W3FPR - Don Wilhelm [EMAIL PROTECTED] To: Bob Tellefsen [EMAIL PROTECTED]; Deni [EMAIL PROTECTED]; elecraft@mailman.qth.net Sent: Saturday, November 13, 2004 1:18 PM Subject: Re: [Elecraft] Talking filter Bandwidths Bob and all, The proper point is the 'halfway' point - half the power is -3 dB (10 log 0.5) but half the voltage is -6 dB (20 log 0.5). ___ 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
