Re: [Elecraft] K2: VFO Drift and Temperature-Compensated PLL ReferenceUpgrade
Michael; Let me make a few comments about this circuit. > I'm trying to understand a bit more about temperature-related VFO > drift in the K2. My K2 sits in the basement where it is currently seeing > stable ambient temperatures around 67F. When using 10 MHz WWV as a > reference, I see approximately 40 Hz of drift (10,000.03 to 9,999.99) > over a 30 to 45 minute period from a cold start. I am not transmitting > during this period, I assume this is just due to a slight heating (can't > be much of a temperature change) of various resistors, capacitors, > inductors, and varactors. This is clearly in-specification as it is much > less than the 100 Hz that is specified in the manual. ;^) A K2 or K2/100 will warm up about 5-10F above the local ambient temperature due to the internal power dissipation; more options installed will push this toward the higher number. > > My K2 is serial number 4137, so it has had the Temperature-Compensated > PLL Reference Upgrade from the start. The Temperature-Compensated PLL > Reference Upgrade documentation says that you can check the VFO drift by > transmitting for a while to raise the temperature of the radio 15 or 30 > degrees F _AFTER_ you have allowed a warm-up period of 30 or more > minutes. This appears to infer that there is a difference in the nature > between warm-up drift and post warm-up drift. If so, can someone explain > what that difference is? There is no difference in the root cause of the drift. This adjustment procedure was designed so that you could make a consistent measurement of drift as you adjusted the value of RA. It is possible to reduce the 20 meter drift to less than 50 Hz with a 50F temperature swing. My K2 has been tested with this mod over a temperature range of 40F to 130F. The drift is not as well compensated below 50F, so you will see somewhat more drift if you operate outside in the winter. > > I haven't performed the formal post warm-up drift testing, but I plan > to give it a try to see how stable the VFO is after warm-up. This raises > another question... Will making any changes to resistor RA on the PLL > thermistor board have any affect on the 40 Hz of warm-up drift (as > opposed to the post warm-up drift), or is this something that can't > really be addressed by the Temperature-Compensated PLL Reference > circuit? Reducing the drift following the test procedure will also reduce the warmup drift. The warmup drift on my K2 is less than 20 Hertz as determined with the front panel frequency display and WWV. > > Thanks, Michael N9BDF > > PS It was nice to see that resistor RA was placed at the top of the PLL > thermistor board -- makes it much easier to fine tune the temperature > compensation! :^) > This was intentionally done in the design so that any K2 user could improve the performance with a little additional work. That is also why RA is a 1/4 watt resistor and all of the other ones on the circuit board are 1/8 watt resistors. -John KI6WX ___ 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: VFO Drift and Temperature-Compensated PLL ReferenceUpgrade
Michael, N9BDF, wrote: My K2 sits in the basement where it is currently seeing stable ambient temperatures around 67F. When using 10 MHz WWV as a reference, I see approximately 40 Hz of drift (10,000.03 to 9,999.99) over a 30 to 45 minute period from a cold start. I am not transmitting during this period, I assume this is just due to a slight heating (can't be much of a temperature change) of various resistors, capacitors, inductors, and varactors. This is clearly in-specification as it is much less than the 100 Hz that is specified in the manual. ;^)... Temperature-Compensated PLL Reference Upgrade documentation says that you can check the VFO drift by transmitting for a while to raise the temperature of the radio 15 or 30 degrees F _AFTER_ you have allowed a warm-up period of 30 or more minutes. This appears to infer that there is a difference in the nature between warm-up drift and post warm-up drift. If so, can someone explain what that difference is? - Yes, the additional heating caused by the RF power amplifier running (especially if you have a K2/100) causes additional drift. Also, even with the mods installed, there is a little drift in the BFO and PLL reference oscillators and they tend to drift such that their errors add on the higher frequency bands and cancel on the lower frequency bands. My K2 (S/N 1289) showed a drift on 15 meters (where the drift of the oscillators add to make it worst-case) of up to 240 Hz from a cold start before the mods. After the mods, I see about 50 Hz drift from a cold start for about 15 minutes or so. Then, worst case, I see up to 50 Hz additional drift if I really "hammer" the K2 at 100 watts out for a long-winded CW transmission (20 minutes or so). That's on 15 meters. On the lower bands, the drift is very close to zero, thanks to the canceling effect of the BFO and PLL reference oscillator. I believe my Reference Oscillator mod is typical. It is a "breadboard" version built out of discrete components mounted on the bottom of the main board that was used in testing the design for the production version of the circuit. It worked FB, so I never bothered to replace it with the "production" mod. 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
RE: [Elecraft] Yosemite Sam
Chuck Skolaut, KØBOG Field & Regulatory Correspondent ARRL Headquarters Phone: 860 594 0239 Email: [EMAIL PROTECTED] Ron AC7AC -Original Message- Who needs the reports of sig strength vs zulu time for Sam? Fred K6DGW Auburn CA CM98lw ___ 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] Yosemite Sam & zulu time
I would think if one were receiving reports from different time zones, reporting in UTC/Z time would be the way to go. Makes time record keeping much simpler on the receiving end. JMHO of course. Carry-on K2Bill #973 > Who needs the reports of sig strength vs zulu time for Sam? > > Fred K6DGW > Auburn CA CM98lw > > ___ > 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: AGC versus RF Gain versus AF gain
Michael, Several factors come into play here: For best sensitivity, you should adjust your K2 so that you discern no change in the audio level when changing from AGC on to AGC off on a dead band (caution - a high local noise level on the 'dead band' may cause an erroneous conclusion). The S-Meter reading on the K2 may not correspond to the S-meter reading on your Kenwoods (I don't know what calibration 'standard' Kenwood uses for S-meter readings). The AGC (and S-Meter action) on your K2 can be adjusted with combinations of AGC Threshold, S-LO, and S-HI settings. If you have the Elecraft SG-1 (or other constant level signal generator), you can set S-9 equal to 50 uV with careful manipulation of the above 3 settings - making a chart of the combinations and the resulting S-Meter activity will help in deciding which way to move each of the 3 settings to achieve whatever your goal may be. Some compromise may be the 'correct' answer. Because S-Meter readings are not subject to any real standards, directly comparing the K2 to any other receiver may be an exercise in frustration. After all, "REAL" S (signal Strength) reports are subjective, and reflect the perception of the receiving station rather than some absolute standard. 73, Don W3FPR - Original Message - I've only seriously used two other HF rigs besides the K2, that is a Kenwood TS-530S and a Kenwood TS-930S. So, when I make comparisons, its between the K2 and the Kenwoods. When I have the AGC set to FAST on the Kenwoods and am receiving a CW signal at say S-9, I can turn the RF gain down to say S-5 (to reduce background noise) and not notice a significant reduction in the volume of the received signal. However, when I do the same thing on the K2, I do notice a reduction in the volume level. Is this normal for the K2? I have the AGC set at 3.8V on the K2 and I notice only a little difference between the background noise of a quiet band when I switch the AGC on and off. Perhaps I still need to fine-tune the AGC a bit downwards on the K2 or it may just be that the K2's RF gain and AGC circuitry takes a different approach than Kenwood used to. ___ 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: AGC versus RF Gain versus AF gain
Micheal, The so called RF gain in the K2 is actually IF gain, which is the same as used in the JRC NRD-515 RX. The difference is the K2 has fixed RF front end gain before the RX mixer with a switchable preamp or attenuator in addition. The NRD-515 has no RF amplifier only a switchable RF attenuator in front of the 1st RX mixer. Not familiar with what the Kenwood RF gain does in the TS-530S or the TS-930S. The K2 has a slightly strange action in that a strong signal goes to a higher S meter reading pretty much as soon as the RF gain is reduced and when the S meter reading goes higher the RX volume does go down as you say. Not a lot but perceptible. It is possible to set the S meter with no signal in to the level required, say S9, though when a station is tuned in that was S9 with full RF gain it now reads higher and the audio volume is less. The JRC NRD-515 volume stays constant until a point is reached that the S meter reading rises with reduced RF gain and becomes greater than the reading for the incoming signal. The RX audio volume then begins to fall beyond that point Looks like a quirk with the K2 AGC action or design. My K2 has had the AGC threshold set to the point where switching the AGC on and off has no effect on the no signal background noise. Came out in my case at 3.70V, though apparently varies slightly from K2 to K2 Bob, G3VVT K2 #4168 ___ 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 burn-in
On Dec 1, 2004, at 1:14 PM, Tom Althoff wrote: Has anyone really hammered their K2/100 with high CQ or QSO rates for a 24 hour period without a secondary fan? I'd be curious how it held up and were you successful in cooking eggs on it? On CW, I've run for a couple of hours at a time at the 100 watt level. The top gets very hot, but not so hot you can't place your hand on top of the heat sink. It's uncomfortable, but not painful. On SSB, the heat sink gets very warm, but not quite so hot as CW after running a couple of hours. In both cases, the fan runs continuously. 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
[Elecraft] Yosemite Sam
Who needs the reports of sig strength vs zulu time for Sam? Fred K6DGW Auburn CA CM98lw ___ 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: VFO Drift and Temperature-Compensated PLL Reference Upgrade
I'm trying to understand a bit more about temperature-related VFO drift in the K2. My K2 sits in the basement where it is currently seeing stable ambient temperatures around 67F. When using 10 MHz WWV as a reference, I see approximately 40 Hz of drift (10,000.03 to 9,999.99) over a 30 to 45 minute period from a cold start. I am not transmitting during this period, I assume this is just due to a slight heating (can't be much of a temperature change) of various resistors, capacitors, inductors, and varactors. This is clearly in-specification as it is much less than the 100 Hz that is specified in the manual. ;^) My K2 is serial number 4137, so it has had the Temperature-Compensated PLL Reference Upgrade from the start. The Temperature-Compensated PLL Reference Upgrade documentation says that you can check the VFO drift by transmitting for a while to raise the temperature of the radio 15 or 30 degrees F _AFTER_ you have allowed a warm-up period of 30 or more minutes. This appears to infer that there is a difference in the nature between warm-up drift and post warm-up drift. If so, can someone explain what that difference is? I haven't performed the formal post warm-up drift testing, but I plan to give it a try to see how stable the VFO is after warm-up. This raises another question... Will making any changes to resistor RA on the PLL thermistor board have any affect on the 40 Hz of warm-up drift (as opposed to the post warm-up drift), or is this something that can't really be addressed by the Temperature-Compensated PLL Reference circuit? Thanks, Michael N9BDF PS It was nice to see that resistor RA was placed at the top of the PLL thermistor board -- makes it much easier to fine tune the temperature compensation! :^) ___ 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: AGC versus RF Gain versus AF gain
I've only seriously used two other HF rigs besides the K2, that is a Kenwood TS-530S and a Kenwood TS-930S. So, when I make comparisons, its between the K2 and the Kenwoods. When I have the AGC set to FAST on the Kenwoods and am receiving a CW signal at say S-9, I can turn the RF gain down to say S-5 (to reduce background noise) and not notice a significant reduction in the volume of the received signal. However, when I do the same thing on the K2, I do notice a reduction in the volume level. Is this normal for the K2? I have the AGC set at 3.8V on the K2 and I notice only a little difference between the background noise of a quiet band when I switch the AGC on and off. Perhaps I still need to fine-tune the AGC a bit downwards on the K2 or it may just be that the K2's RF gain and AGC circuitry takes a different approach than Kenwood used to. Thanks, Michael N9BDF, K2 #4137 ___ 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] SV1EDY's Key Collection Scrapbook
Those of you who are into antique keys might enjoy a look see at: http://www.qsl.net/sv1edy/Keyindex.htm There is a Greek code oscillator, item 15 (So.Be.1) with K2 on the front panel. Didn't say anything about being a kit. Carry on K2Bill #973 ___ 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] CW-"Swing"
Bill wrote: A fist with swing, in my book, has rhythm along with good spacing. - Absolutely! I've heard some people whose sending was so good it took a bit to realize they were using a manual key. While I strive for perfect timing, I have no illusions that an experienced op couldn't spot my "fist" from a machine in an instant. It's no different from an "accent" in spoken language. A little is fine - even gives a little character and interest - but, like an accent, a little goes a long, long way and smart people don't encourage it if they want to be understood! There are some groups of ops who delight in developing such bizarre "fists" that they can only copy each other, if that. They're like kids inventing 'secret languages'. Clearly, they aren't interested in communicating outside of their group. 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] Elecraft K2 with options FOR SALE $1100 - bargain with me
...>>>FOR SALE<<<. Elecraft K2 Serial #: 02576 Options built-in are: KNB2, KIO2, KSB2, K160RX, KAF2, KAT2 & KBT2. Sale comes with HEIL microphone. Have added most official updating mods/revisions. There are no unofficial mods on the K2. I am asking $1100.00. Money Order only. Please email me if you have any questions or would like to bargain. Sincerely, Daniel Brinneman kg4dni www.qsl.net/kg4dni/ __ Do you Yahoo!? Yahoo! Mail - Easier than ever with enhanced search. Learn more. http://info.mail.yahoo.com/mail_250 ___ 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 HEXKEYs are now in stock!
My "main" key is a WBL v22, and it is something. I got a Elecraft edition HexKey, however, because I wanted to see what all the fuss over magnetic return was all about and didn't feel like shelling out the obscenely huge bucks for the Mercury. I was quite pleasantly surprised. It took me a bit of time to find a proper combination of settings for the contact and magnet gaps, but I eventually did. I now have a key that is quite reliable with a very light and barely perceptible motion. I won't say either it or the WBL is better; they are just different. And they are both very, very fine paddles. My only real complaint with the HexKey is that the adjustment screws are too coursely pitched to make fine adjustments as easy as they ought to be. But they do work, and, overall, the HexKey is a wonderful addition to my shack. best wishes, dave belsley, w1euy On Dec 21, 2004, at 1:37 PM, Eric Swartz - WA6HHQ, Elecraft wrote: We received our latest shipment of HEXKEYs today and we are now shipping new orders from stock :-) All remaining backlog orders will be shipped as of today. For more information on the Elecraft Edition HEXKEY, see: http://www.elecraft.com/hexkey/elecraft_hexkey.htm 73, Eric WA6HHQ ___ 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] CW-"Swing"
A few years back I tried hard to copy an op the other night and failed miserably. The code > was all run together with very inconstant element duration. > Dan / WG4S / K2 #2456 > > > Have you ever heard the 'banana boat swing?" ... > Or the 'Lake Erie swing' > > ___ 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] KIO2
Thanks to all for the info. Local store was out of stock but price was $ 39.95. Have an adapter ordered from Tiger Direct. ( much cheaper even with shipping ) Again thanks muchGilK8EAG ___ 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] Yosemite Sam
He's now (1845 ut) S5 with an S4 noise floor, here in Tucson Az. I sent Skolaut an e-mail. 73, Kurt ___ 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] Any OO's on reflector?
Sorry, I forgot the e-mail address for the ARRL Field and Regulatory Correspondent where you can send intruder reports like the "Yosemite Sam" DSB signal on 3700 kHz. The contact is: Chuck Skolaut, KØBOG Field & Regulatory Correspondent ARRL Headquarters Phone: 860 594 0239 Email: [EMAIL PROTECTED] 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
RE: FW: [Elecraft] CW
Dan, WG4S wrote: It got WAYY worse. This guy was on a bug, set for 35 WPM I'd guess. But being polite, he was sending 13 WPM to match the first op. 13 WPM Dashes and 35 WPM dots, spaced for about 16 WPM. My head is hurting just writing this down. I think I could have gotten copy on the Hand Key, but the bug never made any sense. It was just a different Morse code than what I know. Unfortunately, that's pretty common among bug users. Vibroplex is arguably the most common Bug in use today, and they made a LOT of bugs that won't slow down under 25 wpm. For some reason they built 'em with different springs! A bunch of us with Vibroplexes have compared notes on that subject and micrometers disclosed a wide variety of spring thicknesses. The original owner of my bug, a commercial operator at coastal station KPH, put a cable clamp on the thing to get it down under 20 wpm, which he had to do to use it on the commercial circuits handling traffic with ships at sea. Many of the shipboard operators (the guys with the "swing" Vic mentioned) couldn't copy any better than they could send. I find it very irritating when the dits and dah's are not in proper relationship, but I learned CW as a form of "music" with the proper spacing. Hearing it all messed up with "machine gun dits" and varying cadence is like someone singing off key. I can usually figure out the tune, but it isn't pleasant to hear. My favorite key is a Speed-X bug that has a great weight arrangement lets me immediately dial in the proper dit speed for anything from 17 wpm on up. For slower speeds there's my J-38 hand pump. Someone mentioned practicing using one of the code reader programs. That's a great idea, as is recording yourself and then listening to it a few days later to see if that's a fist you'd enjoy copying . Bottom line, if you aren't using a keyboard, practice is important. Maybe less so using a keyer, but still worth while. After 50+ years of pounding brass I still practice sending regularly. Usually I send a page out of the phone book, addresses, numbers and all. 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
FW: [Elecraft] RF build up
Tony: I am sure that you can find evidence of the effect of weather on rf (see below). One of the things I notice is that cw signals sound weaker while it is raining. I always thought that that was because the rain was washing some of the rf out of the air, leaving a smaller amount of radio waves to induce emf in my antenna wire. Since it is also possible that the rain may be washing voltage off the antenna wire itself, I've been thinking of bring the antenna inside the garage, so that the metal roof could shield it from the rain. The other thing I notice is that all the ham bands seem to get weak towards the middle of the day and in the early afternoon. I always thought that had to do with the effects of the heat of the sun. You know how hot and tired you get at 2pm in the afternoon if you are out in the sun. All you want to do is to relax in the shade with a long cold drink. Why not the same situation for radio waves? After all, they are as much a part of nature as you and I. What you say? How come the waves are also weak if it is raining and overcast in the middle of the day? I thought I answered that in the preceding paragraph. What I don't seem to follow, and there doesn't seem to be an explanation for it, is what happens to the feedline when rf is frozen on the antenna, and cw coming from the transmitter at 27wpm leaves the antenna at 18wpm. There has to be some build-up of cw characters somewhere. My guess is the feedline. That is perhaps why old coax always seems to be fatter than new coax: lots of unsent cw characters have distended it. My question is: what happens if there are more characters building up than the feedline can hold? Isn't this the real explanation for swr? Isn't swr higher in winter than in summer? Cheers, and Merry Christmas Alan 8P9BM -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Tom Mc Sent: Tuesday, December 21, 2004 13:48 To: Thom R. Lacosta; David A. Belsley Cc: Elecraft Reflector Subject: Re: [Elecraft] RF build up It's my understanding (from reading another list which is addressing this problem) that some of the RF will, in fact radiate, but that it slows down the speed of the signal. For example, one guy reports sending 27 WPM from his K2 but by the time it gets through the frozen RF build-up on his antenna, it was only 18 WPM. With this in mind, it might be a good time for me to go for the ARRL high speed endorsements on my code copying certificate. Just a thought... Happy Holidays Tom, WB2QDG K2 #1103 -Original Message- From: Thom R. Lacosta <[EMAIL PROTECTED]> To: David A. Belsley <[EMAIL PROTECTED]> Cc: Elecraft Reflector Date: Tuesday, December 21, 2004 10:28 AM Subject: Re: [Elecraft] RF build up On Tue, 21 Dec 2004, David A. Belsley wrote: > Does anyone know of a good way to remove frozen RF from an antenna? Considering the season, you might want to find some eggnog and see if it helps the RF escape. Even if it doesn't, if you drink enough, you may no longer be aware of/plagued by the frozen RF. 73,Thom-k3hrn www.zerobeat.net Home of QRP Web Ring, Drakelist home page, Free Classified Ads for amateur radio, QRP IRC channel Elecraft Owners Database www.tlchost.net/ Web Hosting as low as 3.49/month ___ 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 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 HEXKEYs are now in stock!
We received our latest shipment of HEXKEYs today and we are now shipping new orders from stock :-) All remaining backlog orders will be shipped as of today. For more information on the Elecraft Edition HEXKEY, see: http://www.elecraft.com/hexkey/elecraft_hexkey.htm 73, Eric WA6HHQ ___ 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
FW: [Elecraft] Any OO's on reflector?
Well, it's not audible here (Extreme Northwest Georgia) now (1800Z). It was very readable (tho not overly strong) early this morning (1200Z). Dan / WG4S / K2 #2456 -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Ron D'Eau Claire Sent: Tuesday, December 21, 2004 12:36 PM To: elecraft@mailman.qth.net Subject: RE: [Elecraft] Any OO's on reflector? I alerted the ARRL intruder watch yesterday. Here's their reply: Ron, Tom forwarded your report to me. Thanks very much for it. I have gotten reports overnight from TN and CA on this also. I will see if our monitoring people can help locate a source for this. That is a bit different. I would appreciate any further reports on this if it continues. 73, Chuck Skolaut, KØBOG Field & Regulatory Correspondent ARRL Headquarters Phone: 860 594 0239 If you are hearing it - during the day especially since that would pin down the general location - I'm sure Chuck would appreciate hearing about it. In general, if you are hearing what is clearly an intruder on the Ham bands, it's a good idea to send off a report to Chuck. With Ham-band rigs now "hammer simple" to plug in and fire up on the air, intruders are sure to become a growing nuisance unless we jump right on them. 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 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] RF build up
It's a little known aspect of special relativity which was in fact predicted by Einstein's equations. That coupled with the Heisenberg Uncertainty Principle implies that as you approach a certin limiting speed in CW, the actual transmission speed will slow down and one will no longer be able to distinguish dots from dashes. - Original Message - From: "Tom Mc" <[EMAIL PROTECTED]> To: "Thom R. Lacosta" <[EMAIL PROTECTED]>; "David A. Belsley" <[EMAIL PROTECTED]> Cc: "Elecraft Reflector" Sent: Tuesday, December 21, 2004 9:47 AM Subject: Re: [Elecraft] RF build up > It's my understanding (from reading another list which is addressing this > problem) that some of the RF will, in fact radiate, but that it slows down > the speed of the signal. For example, one guy reports sending 27 WPM from > his K2 but by the time it gets through the frozen RF build-up on his > antenna, it was only 18 WPM. > > With this in mind, it might be a good time for me to go for the ARRL high > speed endorsements on my code copying certificate. > > Just a thought... > > Happy Holidays > > Tom, WB2QDG > K2 #1103 > -Original Message- > From: Thom R. Lacosta <[EMAIL PROTECTED]> > To: David A. Belsley <[EMAIL PROTECTED]> > Cc: Elecraft Reflector > Date: Tuesday, December 21, 2004 10:28 AM > Subject: Re: [Elecraft] RF build up > > > On Tue, 21 Dec 2004, David A. Belsley wrote: > > > Does anyone know of a good way to remove frozen RF from an antenna? > > Considering the season, you might want to find some eggnog and see if it > helps the RF escape. Even if it doesn't, if you drink enough, you may no > longer > be aware of/plagued by the frozen RF. > > 73,Thom-k3hrn > www.zerobeat.net Home of QRP Web Ring, Drakelist home page, > Free Classified Ads for amateur radio, QRP IRC channel > Elecraft Owners Database > www.tlchost.net/ Web Hosting as low as 3.49/month > ___ > 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 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: FW: FW: [Elecraft] CW
> I tried hard to copy an op the other night and failed miserably. The > code was all run together with very inconstant element duration. Around > 13 WPM on a hand key. I was about to get the rhythm figured out when he > BK'd to the other op. > > It got WAYY worse. This guy was on a bug, set for 35 WPM I'd guess. > But being polite, he was sending 13 WPM to match the first op. 13 WPM > Dashes and 35 WPM dots, spaced for about 16 WPM. > Dan / WG4S / K2 #2456 I actually can copy a bug sending 35 wpm dits and longer dahs much easier than a regular keyer at 20 wpm. Strange... The worst is straight key code with dits about 80% the legnth of a dah. And no pauses between words. Paul KB1GEJ ___ 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] RF build up
It's my understanding (from reading another list which is addressing this problem) that some of the RF will, in fact radiate, but that it slows down the speed of the signal. For example, one guy reports sending 27 WPM from his K2 but by the time it gets through the frozen RF build-up on his antenna, it was only 18 WPM. With this in mind, it might be a good time for me to go for the ARRL high speed endorsements on my code copying certificate. Just a thought... Happy Holidays Tom, WB2QDG K2 #1103 -Original Message- From: Thom R. Lacosta <[EMAIL PROTECTED]> To: David A. Belsley <[EMAIL PROTECTED]> Cc: Elecraft Reflector Date: Tuesday, December 21, 2004 10:28 AM Subject: Re: [Elecraft] RF build up On Tue, 21 Dec 2004, David A. Belsley wrote: > Does anyone know of a good way to remove frozen RF from an antenna? Considering the season, you might want to find some eggnog and see if it helps the RF escape. Even if it doesn't, if you drink enough, you may no longer be aware of/plagued by the frozen RF. 73,Thom-k3hrn www.zerobeat.net Home of QRP Web Ring, Drakelist home page, Free Classified Ads for amateur radio, QRP IRC channel Elecraft Owners Database www.tlchost.net/ Web Hosting as low as 3.49/month ___ 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] Any OO's on reflector?
I alerted the ARRL intruder watch yesterday. Here's their reply: Ron, Tom forwarded your report to me. Thanks very much for it. I have gotten reports overnight from TN and CA on this also. I will see if our monitoring people can help locate a source for this. That is a bit different. I would appreciate any further reports on this if it continues. 73, Chuck Skolaut, KØBOG Field & Regulatory Correspondent ARRL Headquarters Phone: 860 594 0239 If you are hearing it - during the day especially since that would pin down the general location - I'm sure Chuck would appreciate hearing about it. In general, if you are hearing what is clearly an intruder on the Ham bands, it's a good idea to send off a report to Chuck. With Ham-band rigs now "hammer simple" to plug in and fire up on the air, intruders are sure to become a growing nuisance unless we jump right on them. 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
Re: [Elecraft] CW
Well, it took me some time to realize that lot's of cw ops out there really weren't so involved with their phase locked loops that they felt the need to begin many of their sentences with PLL. But don't get me started on poor sending or I'll have to start my rant about peoplewhodonotspacebetweenwords. Argh. best wishes, and a great holiday season to all, dave belsley, w1euy On Dec 21, 2004, at 11:25 AM, Vic Rosenthal wrote: Dan Barker wrote: Anytime you are practicing sending (or sending on the air for that matter), it can be extremely enlightening (or depressing, depending on your fist) to hook up a CW reader (I use CWGet) and look it over after your session. I find it very helpful with spacing. Poorly spaced CW is by far the hardest kind to copy. Have you ever heard the 'banana boat swing?" This describes a form of bug sending in which the number of dits in a letter is more or less proportional to the speed! No problem, I can copy it. Or the 'Lake Erie swing', also a bug phenomenon, in which you can imagine the operator timing his code to the rolling of a ship: "dah di dah dit DAT dah didah" (yes, the 'DAT' is intentional). Thanks to keyers, these phenomena are only rarely heard today, but what we do have is operators who run letters and words together. For example, I have a friend whose call apparently begins with "YH" (he is in California, see if you can guess what he is trying to send). Run-on word spacing is even worse, leaving my head spinning. -- 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 ___ 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
FW: FW: [Elecraft] CW
I tried hard to copy an op the other night and failed miserably. The code was all run together with very inconstant element duration. Around 13 WPM on a hand key. I was about to get the rhythm figured out when he BK'd to the other op. It got WAYY worse. This guy was on a bug, set for 35 WPM I'd guess. But being polite, he was sending 13 WPM to match the first op. 13 WPM Dashes and 35 WPM dots, spaced for about 16 WPM. My head is hurting just writing this down. I think I could have gotten copy on the Hand Key, but the bug never made any sense. It was just a different Morse code than what I know. One might say these two guys deserved each other. Dan / WG4S / K2 #2456 Have you ever heard the 'banana boat swing?" ... Or the 'Lake Erie swing' ___ 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] CW
Good point, Dan. Also, if you don't have a code reader, try a simple audio tape recorder and listen to yourself after a sending session. You can coach yourself to listen for badly sent characters or spacing between characters or words. This gives you feedback on what to work on next session. 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
Re: FW: [Elecraft] CW
Dan Barker wrote: Anytime you are practicing sending (or sending on the air for that matter), it can be extremely enlightening (or depressing, depending on your fist) to hook up a CW reader (I use CWGet) and look it over after your session. I find it very helpful with spacing. Poorly spaced CW is by far the hardest kind to copy. Have you ever heard the 'banana boat swing?" This describes a form of bug sending in which the number of dits in a letter is more or less proportional to the speed! No problem, I can copy it. Or the 'Lake Erie swing', also a bug phenomenon, in which you can imagine the operator timing his code to the rolling of a ship: "dah di dah dit DAT dah didah" (yes, the 'DAT' is intentional). Thanks to keyers, these phenomena are only rarely heard today, but what we do have is operators who run letters and words together. For example, I have a friend whose call apparently begins with "YH" (he is in California, see if you can guess what he is trying to send). Run-on word spacing is even worse, leaving my head spinning. -- 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] RF build up
That's what my Acom amp is for. Don't usually need it. The K2/100 by itself typically keeps the frost RF off the antennas. I relabeled the ON switch to RF Heater on my amp. Had to use it last night. Temp dropped to 4 degrees and had snow. It was sluggish trying to get my CW speed up. After the RF Heater warmed up CW was flowing fine. Happy Holidays. N2TK, Tony -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of David Sent: Tuesday, December 21, 2004 10:37 AM To: Elecraft Reflector; David A. Belsley Subject: Re: [Elecraft] RF build up now this is why you want an air dielectric on your coax that way you can hook a heat gun and blow hot air up to the frozen rf and thaw it out. you could also try cognac after a few you won't care about the frozen rf another thing is to get a couple dozen young hams together give them each a mirror 2"X2" than have them reflect the suns light on the antenna with enough mirrors you will be able to warm that frozen rf right out off the antenna and make it as good as new.( of course to much heat will destroy it.) > Does anyone know of a good way to remove frozen RF from an antenna? It > is now so thick on my wire that the new RF can no longer get through. > Typically the antenna stays pretty clear where there is a current max, > but I've been changing qrg so much, only the feed point looks okay, > even running the K2/100 qro. I envy you chaps down south and on the > left coast who don't have to put up with this problem. > > best wishes, > > dave belsley, w1euy > ___ 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] RF build up
I know what you mean Dave. I have wrap my feedline around the pot belly stove to keep it from happening. Bill K3UJ = Does anyone know of a good way to remove frozen RF from an antenna? It is now so thick on my wire that the new RF can no longer get through. Typically the antenna stays pretty clear where there is a current max, but I've been changing qrg so much, only the feed point looks okay, even running the K2/100 qro. I envy you chaps down south and on the left coast who don't have to put up with this problem. best wishes, dave belsley, w1euy ___ 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] RF build up
now this is why you want an air dielectric on your coax that way you can hook a heat gun and blow hot air up to the frozen rf and thaw it out. you could also try cognac after a few you won't care about the frozen rf another thing is to get a couple dozen young hams together give them each a mirror 2"X2" than have them reflect the suns light on the antenna with enough mirrors you will be able to warm that frozen rf right out off the antenna and make it as good as new.( of course to much heat will destroy it.) > Does anyone know of a good way to remove frozen RF from an antenna? It > is now so thick on my wire that the new RF can no longer get through. > Typically the antenna stays pretty clear where there is a current max, > but I've been changing qrg so much, only the feed point looks okay, > even running the K2/100 qro. I envy you chaps down south and on the > left coast who don't have to put up with this problem. > > best wishes, > > dave belsley, w1euy > ___ 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] RF build up
On Tue, 21 Dec 2004, David A. Belsley wrote: Does anyone know of a good way to remove frozen RF from an antenna? Considering the season, you might want to find some eggnog and see if it helps the RF escape. Even if it doesn't, if you drink enough, you may no longer be aware of/plagued by the frozen RF. 73,Thom-k3hrn www.zerobeat.net Home of QRP Web Ring, Drakelist home page, Free Classified Ads for amateur radio, QRP IRC channel Elecraft Owners Database www.tlchost.net/ Web Hosting as low as 3.49/month ___ 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] Seaoson's Greetings
Good Morning, Just wanted to take a brief moment and say Merry Christmas. I have been looking for work for a couple of months now. Also keeping busy with other things, including some kit building for some that don't have the time or complete skills or ability to complete them. It is has been very satisfying. Keeps me up to date on the hobby side, and has allowed me to get to know some aspects of the hobby all over again. You tend to get a bit jaded with some of the aspects of the world these days. Having hams send me stuff to build shows extreme trust on their part. Being able to build these kits and get them back to people that will really use them and appreciate having them done allows me to give a small bit back to the ham community. Point being that it is very unusual and also very much a privelage to be a part of a group that still believes in and practices "good will toward men". Good stuff. May you all have a blessed holiday season and prosperous new year. "Go with throttle up" Jess AE0CW <>< ___ 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 #4595 No Joy
Spent all of yesterday trying to figure out the problem with the low range value during the PLL reference oscillator range test. I removed the thermistor board as was suggested and checked the components for value and location and reheated any joints that looked even a little suspect. Still have a range of 8 Khz. I've checked everything in the PLL area and all components are of the correct value and where they are supposed to be. Following suit as with the thermistor board I reheated any joints that might be considered suspect. I did find that R110 has a low value as compared to its color code. It is supposed to be 5.6K and it measures 3.7K. I don't think this low R110 value would affect the PLL reference oscillator range with it being in the variable bandwidth crystal filter circuitry. I have to be missing something here. Ideas? 73, Ed N0EHQ ___ 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] RF build up
Does anyone know of a good way to remove frozen RF from an antenna? It is now so thick on my wire that the new RF can no longer get through. Typically the antenna stays pretty clear where there is a current max, but I've been changing qrg so much, only the feed point looks okay, even running the K2/100 qro. I envy you chaps down south and on the left coast who don't have to put up with this problem. best wishes, dave belsley, w1euy ___ 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] KIO2
Gilbert J Cross wrote: Wanting to try out the new KIO2 I found that my computer has only USB ports. Is it possible to cobble up an adaptor to get from the DB9 to the USB port? A USB to serial converter works for me and I have the cheapest one I could find. Bob Baxter AA7EQ ___ 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] Any OO's on reflector?
Someone might also want to alert the IARU Region 2 Monitoring System (http://www.storm.ca/~iarumsr2/). I'm sure they'd be interested in this, if they don't already know about it. 73! Dan KB6NU --- President, ARROW Comm. Assn. (www.w8pgw.org) ARRL MI Section Affiliated Club Coordinator CW Geek (FISTS #9342) Read my ham radio blog at www.blurty.com/~kb6nu - Original Message - From: "Brian Mury" <[EMAIL PROTECTED]> To: Sent: Tuesday, December 21, 2004 3:49 AM Subject: Re: [Elecraft] Any OO's on reflector? > On Tue, 2004-21-12 at 00:43 -0700, [EMAIL PROTECTED] wrote: > > The weirdest is on exactly 3700.00 LSB; exactly every 40 seconds, a > > recording of Yosemite Sam saying, "Varmint, I'm-a gonna blow you to > > smithereens!!" Can anyone else hear that? > > I hear it on 3700 LSB, but also on 3700 USB. Tuning away from 3700, I > don't hear a carrier, so it doesn't appear to be AM. Who uses DSB these > days? > > -- > 73, Brian > VE7NGR > > ___ > 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
FW: [Elecraft] CW
Anytime you are practicing sending (or sending on the air for that matter), it can be extremely enlightening (or depressing, depending on your fist) to hook up a CW reader (I use CWGet) and look it over after your session. I find it very helpful with spacing. If you can make a straight key send 0123456789 to CWGet without any errors or spaces, you've done something. That's almost as hard as sending a paragraph! I used to consistently sign "DEW G4S" until I started watching my sessions on the laptop. Now I sign "DE WG4S". It's got to be easier on the other guy! Dan / WG4S / K2 #2456 Bob Tellefsen sez: A good way to practice is to send to yourself from a page in a book. ___ 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
FW: [Elecraft] Any OO's on reflector?
Hey, let's find him. If every Kn owner builds a small 3 element yagi for DF and sends the bearing of the null to the list, and their location, we'll have good data. Let's see ... 3700 kcps, director size ... , reflector size Is that a large antenna? Dan / WG4S / K2 #2456 Check out 3700 KHz and he'll be there every 40 seconds... ___ 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
FW: [Elecraft] K2 Odd Power issues
Evidently the wattmeter is not a problem. The KAT2's power meter seems fine (eg, believable). I checked with a 200MHz bandwidth scope and the results are shown below. I'll dig around the transformers a bit. What's the current thinking on the 160 inefficiency? Dan / WG4S / K2 #2456 K4ZM sez: Don't overlook the fact that most wattmeters have a roll off of accuracy when you get ot the 24/28 MHz frequencies. They tend to indicate a lower than actual output. Freq KAT2 Amp O'scope Calc 1.8 9.9 4.7 3.613.0 3.5 13.9 3.0 4.116.8 7.0 14.4 2.9 4.116.8 10.1 13.1 3.0 3.814.4 14.0 12.9 2.7 3.613.0 18.1 14.2 3.0 3.713.7 21.0 11.6 3.1 3.210.2 24.9 9.3 2.5 2.8 7.8 28.0 5.8 2.3 2.4 5.8 O'scope figures are p-p/2 at 10X. Calc is (Scope * 7.07)^2 / 50 ___ 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] Any OO's on reflector?
On Tue, 2004-21-12 at 00:43 -0700, [EMAIL PROTECTED] wrote: > The weirdest is on exactly 3700.00 LSB; exactly every 40 seconds, a > recording of Yosemite Sam saying, "Varmint, I'm-a gonna blow you to > smithereens!!" Can anyone else hear that? I hear it on 3700 LSB, but also on 3700 USB. Tuning away from 3700, I don't hear a carrier, so it doesn't appear to be AM. Who uses DSB these days? -- 73, Brian VE7NGR ___ 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
