Re: [Elecraft] K2 low power
If the low power and high current are only on 160, 80, 40, 20, 15, and 10 meters, then check the number of turns on the Low Pass Filter toroids. It appears to be 80,40,10,12 only. 15 and 20 are OK. I am in the middle of checking the turns. tnx. Conway Yee, N2JWQ __ 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] K2 low power
I have found low power on initial transmitter tests of my K2 construction. I am unable to get above about 1 Watt before I get High Current. I can not find any obvious error in winding T1-4. I reflowed all the joints involved in the toroids. Q6 is warm. I am unable to assess the temperature of Q7 or Q8 because of the heatsink. No errors noted in the resistors in measuring power output. tnx. Conway Yee, N2JWQ __ 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] Q7 fails resistance checks.
I have just finished the basic construction of the RF board. Both the base and collector of Q7 fail resistance checks, being near shorted out (0.1-0.2 ohm). I must have a solder bridge SOMEWHERE, otherwise unidentified. No obvious bridges noted. Logically, it should somehow be associated with T3 and/or T4. What is the most likely souce of my problem? Should I take out T3 and/or T4 before rechecking the resistances? tnx. Conway Yee, N2JWQ __ 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] Q7 fails resistance checks. (fwd)
What is the most likely souce of my problem? Should I take out T3 and/or T4 before rechecking the resistances? Problem fixed. I reflowed all the solder joints in the suspect area. When I got to T4, the problem went away. tnx. Conway Yee __ 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] [K2] Q7/8 thermal pads
What is the advantage of sticking the thermal pads onto the transistors instead of the heatsink itself? The manual is VERY explicit in saying that the adhesive side must be on the transistor. tnx. Conway Yee __ 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] On the advisability of selling kit radios
The threads about a kit amplifier got me thinking. It is now 1999. The market is saturated with well established companies such as Yaesu, Icom and Kenwood selling high quality radios. Ham radio technology is stagnant with no major leaps in the horizon. The average amateur is aging rapidly with very little influx of new blood. The youth are all interested in computers and the internet. The days of Heathkit are long past; there is no way to save money building kit electronics. The only kit manufacturers sell small inexpensive radios that can be built in a few hours. Certainly there is no good reason to start a company selling a 100 Watt kit SSB/CW rigOTOH Elecraft bet it could and it would appear that they are successful. It is now 2010. The same arguments are being put forward for an solid state HF amplifier. In addition, the legal liability of high current electronics is daunting. The population of customers of amplifiers is even smaller than that for 100 Watt kits. Are these arguments correct? I don't know but suspect that there would be a niche market for such kits as long as the manufacturer has no business presence in the US. Hopefully such a kit starts getting sold in the next few years. It sounds like fun. tnx. Conway Yee, N2JWQ __ 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] K2 BFO not oscillating
On Wed, 3 Feb 2010, Don Wilhelm wrote:
So the problem is that the BFO is not oscillating.
Searching some more, I am no longer certain that this is the case, I have
been using a Fluke 77 for AC voltage measurements. Checking the spec
sheet, it appears thaat AC voltages are measured from 100mV to 750V with a
frequency range from 45Hz to 1KHz. Certainly the BFO voltages are too low
and the frequency too high to register.
Testing this theory, I place my Fluke 77 to TP3 which is KNOWN to have
12099Hz, I read 0V. This MAY explain my zero measurements on TP2 and pin
6 of U11.
Trying the frequency probe on pin 6, I see 4913.11Hz This is also seen
on pin 7 (as expected). I also see the same on both sides of D37
(although slightly higher frequency 4913.38Hz. Nothing is seen on TP2.
and possibly on C168 (unstable number much smaller than 4913, mostly in
the 2000 range). In summary, assuming that the signal is from the
crystal, I see it up to the gate of J310 but not on the source.
Does this mean that I have managed to fry Q24?
I note that V_{alc} is zero. Could I have missed something that is
supposed to be hooked up to the other side of R98? I still can't find a
jumper in the instructions that is supposed to be soldered to the tracing
extending from the other side of R98 toward the control board.
Also, what test equipment am I supposed to purchase that is able to
measure voltages in the MHz range? I can break out my oscilloscope but
this seems overkill for the job. Is there a handheld multimeter that can
handle HF frequency measurements?
tnx.
Conway Yee, N2JWQ
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Re: [Elecraft] K2 BFO not oscillating
expected - Q24 does not pass the BFO signal on receive due to the
absence of voltage on the VALC signal line.
Thats it! Your clue led me to trace V_{alc} back to the control board.
I NEVER had a non-zero measurement on V_{alc} even though I was in CAL
FCTR.
It turns out that I forgot to solder pin 1 on U10 on the control board.
Oops. Once soldered, TP2 is happy.
tnx.
Conway Yee
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Re: [Elecraft] K2 BFO not oscillating
Does your counter probe report a frequency reading when plugged into
TP1? If so, the probe is working, if not, then your problem is with
either the probe itself or the Q9 and Q10 circuits on the Control Board.
The frequency probe is fine.
TP3 shows 12099.11
when I switch to TP2, I read zero.
Turn your manual to Appendix E page 11 and do the 4 test steps indicated
at the top of the 1st column. Then compare the DC voltages during CAL
FCTR at the leads of Q24 and U11. If that does not reveal the problem
for you, tell us what those measurements are an we may be able to help.
From Appendix E, the BFO fails to oscillate.
BFO Output : Vrms = 0.001
BFO buffer output : Vrms = 0.008
[measurments done with Fluke 77, AC voltage]
U11 DC voltages appear nominal
pin 1 : 1.403 manual 1.4
2 : 1.4031.4
3 : 00
4 : 4.75 5.0
5 : 4.76 5.0
6 : 5.86 6.1
7 : 5.44 5.6
8 : 5.92 6.1
Q24 DC voltages are abnormal
S : 0 manual 0.0
G : 01.2
D : 01.3
Looking at the circuit diagram, nothing is soldered to the other side of
R98, V_{alc}. Could this be the problem?
I am unable to find where in the circuit diagram V_{alc} is hiding.
On the circuit board, it appears that jumpers are supposed to be there. I
am also unable to find in the construction instructions I was supposed
to (or not) place what appears to be jumpers in the area.
tnx.
Conway Yee, N2JWQ
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[Elecraft] K2 BFO not oscillating
TP2 reads 0 MHz. Checking the components involving the BFO, No obvious missing components. No obvious cold joints. I checked the to pads adjacent to L33 which I believe to be the pads to the BFO crystal filters (two more are hidden under L33). With power on, the voltages are different making me suspect that I did not short the crystals. The manual tells me that the BFO isn't working or the frequency probe is not hooked up (which it is). It also tells me to go to the troubleshooting section. The table in the section doesn't seem to illuminate anything. The signal tracing part only seems to tell me to check the voltages (which are lower than the 0.020 volts). What do I do? tnx. Conway Yee, N2JWQ __ 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] followup on K2 contruction and assistants
My daughters (3yo and 7 yo) and I are continuing the K2 build. Both daughters are now capable of holding the soldering iron and the solder during soldering. They take turns now: one holding the solder and the other holding the iron. Both are sitting on my lap when soldering is done. Needless to say, the 7 year old is steadier than the 3 year old but both are capable. No obvious cold solders and Dad occasionally reflows the joint when suspicious. I am having them do only resistors/capacitors. No semiconductors. I haven't tried having the 7 year old hold both the solder and the iron at the same time but will try in the next few days. I don't think the 3 year old can hold both. tnx. Conway Yee, N2JWQ __ 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] Is the K2 old technology
On Mon, 11 Jan 2010, Vic K2VCO wrote: although I have a better-performing K3, I'd never give it up. Look forward to the sad day when I actually finish the K2, I am planning my next project. While the K3 looks like a much less challenging project, I am intrigued. In what sense does the K3 outperform the K2? tnx. Conway Yee, N2JWQ __ 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] K2 RF board X7-X11
What is the best way to solder X7-X11 crystals? The instructions say to solder two ground leads on the side. The ground leads on the left are between the crystal and the resistor packs. I think I should solder the ground leads onto the crystals before soldering the leads onto the crystal case (at least on the left side if not both). Options? tnx. Conway Yee, N2JWQ __ 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] K2 RF board X7-X11
Don, The issue is that the ground leads on the left side of the case is between a resistor pack and the crystal case. There isn't the room to solder the ground lead after soldering the crystal in place. Should I solder the ground leads onto the case BEFORE I solder the crystal onto the PC board? tnx. Conway Yee __ 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] Is the K2 old technology
N8XMS writes: First, is the K2 long in the tooth? Am I spending a significant amount of money on technology that is on it's way to being obsolete? W9ILF writes: Much of it comes from the fact this reflector seems to be 95% K3 talk. I've been thinking about this thread for awhile. Is the K2 outdated technology? I would say yes almost without equivocation. Ham radio in general is outdated. I have a cellphone in my pocket that has 1 watt output and gives CONFIDENT point-to-point communication around the world under virtually all reasonable circumstances. The Internet also gives much more convenient worldwide communication. The only advantage ham radio has in communication in the absence of intervening infrastructure. The construction of the K2 is also outdated technology. The IC choices are now increasingly difficult to find (in any form factor as the designs themselves are getting discontinued). SMT is now the norm in industry and DIP is outdated. Software defined radio rather than hardware is now becoming the norm. The K2 is the state of the art in ONLY an extreme niche. Specifically it is likely the highest performing hardware radio that is available for construction by a hobbyist from the component level. Given technical advances in electronics, it is likely to remain the state of the art for the foreseeable future. As far as maintainability, I see no insurmountable challenges. After all, there are Model T and Delorean clubs keeping those cars on the road. With the Internet available, communication with enthusiasts are easier than with newsletters (e.g. FoxTango). Elecraft is too small a company to manufacture any part that is not easily reversed engineered. Sooner or later nearly all the DIP IC's will be not available on the market. At this point, since the technology used in the K2 was relatively generic, we will figure out that the chips (say 612 or the 3150) was used in massive quantities in a Sony Walkman or a Technics audio amplifier. Ebay prices on such items will be negligible and Elecraft enthusiasts can buy someone else's junk for pennies on the dollar. tnx. Conway Yee, N2JWQ __ 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] Let me build a K2 for you
W1HYV writes: I have built very close to 300 K2's to date. Given that the current serial numbers are nearing 7000, having built 300 is on the order of 3-6% of the total constructed! If a SINGLE person is building that many and there are other people building for other hams, how many people have actually build their own K2? Are commercial builders responsible for more K2's than someone who builds 1-4 for themselves? For me the MAJOR attractions of the K2 is the ability to build your own modern HF rig (albeit 10 year old technology as someone alluded to in another thread), something that hasn't been seen since the days of Heathkit. Are most K2 users people who buy it prebuilt? tnx. Conway Yee, N2JWQ __ 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] Let me build a K2 for you
GM4ESD writes: I don't know about most either, but I, and our cat, built K2/100 # 3255 some years ago. Beware of cats who try to help, our Temple Cat takes an unhealthy interest in multi pin SMDs. I don't know I'm building my K2 with two assistants...one 7 years old...one 3 years old... My 7 year old is in charge of holding the solder. My 3 year old is in charge of the pliers to clip the lead while assisting me in holding the soldering iron. Of course, it takes about three times as long to get anything done with so many assistants sitting on your lap but we are having a lot of fun... Even washing our hands after soldering (Pb) is a project involving water in all sorts of places that Mom isn't all thrilled aboutoops tnx. Conway Yee, N2JWQ __ 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] base K2 RF board
Does this go back to the older manuals? I think I used Manual Ver C (no 100% certain, though) when I built K2 #1103 -- is it something I should know about and check? Both the rev G manual on the web and the rev G printed manual has the same problem. tnx. Conway Yee __ 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] base K2 RF board
From an earlier manual, there are .001 capacitors on the RF Baord at C1, C2, C9, C17, C26 and C27 in addition to the ones that do appear in the manual. Thanks. This completes my inventory of 0.001 capacitors. For the list of .01 capacitors, add C52, C53, C55, C58, and C61. Those additions should make the numbers right. This list of 5 capacitors is already in the Errata. This brings the inventory to 38 of 43 capacitors. There are still 5 capacitors missing. Assuming that only one line was cut off at the top, the remaining capacitors are missing from the last line (i.e. C175). The line containing C175 is terminated by a comma. The assembly instructions are correct, it is only the parts listing that has these omissions. I have been told that it happened due to a formatting glitch. I agree that it is likely an error in the parts listing. The word processor likely leaves only a certain amount of space which is exceeded by having 28, 43 entries. I prefer LaTeX which calculates ALL of these entries on the fly, giving much better results. tnx. Conway Yee, N2JWQ __ 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] base K2 RF board
On Sun, 3 Jan 2010, Don Wilhelm wrote: It looks like the height of the column stayed the same, but the width was reduced - the number of capacitors per line is greater in the Rev F manual than in the Rev G. Taking your hint, I downloaded the Rev D manual. Assuming no signficant changes in parts in the interim with Rev G, all parts are accounted for! tnx. Conway Yee __ 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] base K2 RF board
VP8NO writes: There was a time, maybe 8-9 years ago when life was thought to be too short for inventories, many just jumped in and got on with it, I certainly did. 100% success. Yes. I know. Given the instructions, I figured MOST would just jump in and start building. As for me, I prefer to understand the complete inventory. To each his own. I inventory the ENTIRE kit and designate the destination of each and every part. I have each part individually taped onto paper. All inconsistencies MUST be understood before proceeding. This is how I worked out that there were two capacitors short on in the control panel bag and extra in the RF bag. I am also short a few plastic washers. Before soldering each part, I check its identification AGAIN. I believe, however, erroneously that this decreases my risk of putting the wrong part in the wrong location. All this chatter about truncated lines is just getting in the way of building. Perhaps but it keeps me sane and keeps my anal nature from getting the better of me!! And another thing, real men wind torroids ;-) Unless you have a medical condition or other disability. I fully intend to wind my own toroids. My only condition relevant to ham radio is being a bit too anal :) tnx. Conway Yee, N2JWQ __ 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] base K2 RF board
Continuing my build of the base K2, I have identified two of the missing designators in the Appendix A, page 1 0.001 and 0.01 capacitors. C1 and C2 are 0.001 (102) capacitors as installed on p. 36, right column, 3rd item. C1, C2 are NOT listed in the Appendix A pages 1-3. For the 0.001 uF (102) entry, 28 capacitors are in inventory with 22 designators listed. Specifically C1 and C2 are not listed. Is there a list of the remaining capacitors (4) which are 0.001 uF, likely C37? After accounting for the Errata, at total of 38 0.01 uF (103) capacitors are listed. There are 43 present in inventory the RF board bags for a total of 5 missing designators. The last item, C175 is followed by a comma. Further there is a suggestion of a series of 5 commas above the first line. Is there a list of the 5 missing capacitors, likely C52 or C175? Thanks. Conway Yee, N2JWQ __ 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] K2 front panel LCD soldering
KA9UCP writes: One point they did make, be sure the IC under the LCD is checked for proper soldering as any corrections after the LCD is installed is a bear. W3FPR writes: The problem was that for a period of time, the leads on the backlight assembly from the vendor were too short, and those backlight assemblies with short leads must use the instructions on the errata page Gentlemen, Your recommendations are appreciated. I checked the IC joints VERY carefully for cold joints and bridges. I reflowed all joints as well. My leads are long as well. I have a followup question. The instructions specifically say NOT to remove the backing on either side. My LCD backlight assembly has white diffusers on both sides (so far so good). There is, however a SECOND thin plastic translucent (not white) film as well on top of the assembly which seems to be removable. Can I remove this second film? tnx. Conway Yee, N2JWQ __ 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] securing K2 RF board
I typically secure PC boards with a Panavise. With the K2 RF board, the FIRST step is to place the standoffs and 2D spacer (which go to the edge of the board! This makes the Panavise pretty much useless. Other than leaving the board loose and elevating the board with spacers as suggested by W3FPR and GM4ESD on February 28, 2005 what are my options? tnx. Conway Yee, N2JWQ BTW, I am having a blast building the K2. Kudos to N6KR and WA6HHQ. __ 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] K2 front panel LCD soldering
On page 27, right column of the current K2 construction manual, the revised instructions tell me to place the spacers beside the LCD leads and remove the spacers after soldering. The original instructions tell me to place the LCD leads THROUGH the holes in the spacer. Presumably these spacers are the LCD spacers broken from the RF probe/switch spacer at the beginning of the construction. Why did they change the instructions? What is the advantage? Not knowing the benefits of the new instructions, it would appear that the old instructions make more sense. The new method leaves the LCD supported by only the leads. The spacers add support. tnx. Conway Yee, N2JWQ __ 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] K2 front panel board
I am working on the front panel board. I have a problem with pin 10 of RP1. The hole is not completely formed. There is a small sliver of green plastic blocking the hole about half way through the board. Suggestions? tnx. Conway Yee, N2JWQ __ 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] K2 front panel board
W3FPR writes: Try sticking a toothpick or similar tool through the hole. Worked like a charm. tnx Conway Yee, N2JWQ __ 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] EA3PLQ mods for K2 PSK31
Is there any current source for the PCB's that EA3BLQ provided? I was looking at the site and the mods look rather interesting. tnx Conway Yee, N2JWQ __ 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] Elecraft HF amplifier?
Is there a chance that a Elecraft will develop a HF amplifier? Is there another kit manufacturer with such a beast? It would be nice to have a kit station from Alpha to Omega. Conway Yee, N2JWQ __ 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
