Re: [Elecraft] K3
There will be allways 2 cents to add :) But only one thing is endless. - Original Message - From: Kevin Rock [EMAIL PROTECTED] To: 'elecraft' elecraft@mailman.qth.net Sent: Friday, November 04, 2005 1:39 AM Subject: Re: [Elecraft] K3 Not quite, there are much higher mountains on other planets ;) The propagation should be quite good and the noise floor very low unless the planet is Jupiter or Saturn!! Kevin. KD5ONS On Thu, 3 Nov 2005 08:18:14 +0100, S55M [EMAIL PROTECTED] wrote: Everybody's talking abt K3 but after K2 there is only Mt. Everest left :) Adi S55M 9A8WW -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.362 / Virus Database: 267.12.7/159 - Release Date: 11/2/2005 ___ 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] Re: Elecraft] Re Competition for Elecraft
Hi Mike, Sienna design goals (not final specs): MDS: -130dB (preamp off) IP3: +25dBm at 5 kHz spacing; preamp off Blocking Dynamic Range: 125 dB at 5 kHz spacing 2-Tone Dynamic Range: 90 dB at spacings = 5 kHz http://www.getboost.com/dz/sienna_specs.htm These are nothing great. If they were at 1-2 kHz spacings they would be getting close to Orion. But then you have a little issue with phase noise, which Ten-Tec uniquely addresses in Orion's synthesizer design: http://radio.tentec.com/cms-files/565_syn_article.pdf K2, IC-7800 and I suspect FT9000 (no close-in data yet) all fall apart at 2 kHz spacings due to phase noise issues. Note the f footnote in the second column from the right below. Measurement was Phase-Noise Limited rather than intermodulation limited http://www.sherweng.com/table.html 73, Bill W4ZV ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] Sweepstakes
Just for information CW Sweepstakes begins 2100 UTC Saturday, ends 0300 UTC Monday, so Friday night should be realitivly sane... cheers, Julius n2wn ___ 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] Power calcs and simple charging mod
HI all I have just about finished upgrading my K1 now (4 band module and backlight) The current drain is about 65-75mA ,depending on volume setting about 70mA for normal listening. I have fitted 2400mA cells that just fit . I have checked the current drain at 4 watts from these cells and it seems about 1000mA (1Amp) So I have worked the following out but would just like a check done Irx = 60 Itx=1000 Tx duty cycle 50% (since CW) Ratio tx/rx 25% So in one hour I would be in tx mode for 15mins drawing 1000mA but since it’s at 50% duty that’s 500mA for 15mins Which works out to 250mA for 30 mins or 125mA for 1 hr Plus the rx drain of say 70mA so that’s 70mA/Hrs Total drain then is 125+70=195mA/Hr Since I have 2400mA/Hr cells that’s 2400/195=12.3Hrs use That just seems at lot of use at 25% tx/rx ratio and with 4 watts output power but it seems right to me., anyone confirm ? One more little mod I have done to the K1 (which I know I will be shot down in flames for !) I wanted the cells in the K1 to be kept topped up ready for action so I found a pin on the on/off switch that only gives 12volts out when the switch is in the OFF position From this pin I took a feed to the cells via a 1amp diode and series resistor to limit the current to about 25mA on a fully charged pack and about 50-60mA on a flat pack. This only supplies charge to the cells when the k1 is connected to external power and turned off ,so if using the K1 in the field off a gel pack or the like it does don’t add extra drain to the pack when the radio is turned on , when the radio is turned off if you want to save any drain to the pack just unplug it! It works for me. All the best Paul M0BMN -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.362 / Virus Database: 267.12.8/161 - Release Date: 03/11/2005 ___ 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 internal battery
As with most folks, my hindsight is perfect. This applies to the reading of manuals I have the K2 internal battery installed and neglected to read that the switch should be OFF when using outside power. As a result (I assume) my internal battery voltage is low at about 9.6 volts. A few days ago I did put the switch in OFF and hoped that the charge would come back. Not so. I have a 14.2 volt reading on my power supply plug to the K2. Any suggestions? Is it possible that my construction might be at fault? 73 and thanks Slater VE5OA Wolseley, SK Canada K2 - 4519 ___ 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] Power calcs and simple charging mod
Paul: Here's the way I'd figure it out: Transmit current = 1000 ma Receive current = 70 ma Xmit duty cycle = 12.5% (25% transmit x 50% duty cycle while transmitting) Average current drawn = 0.875 x 70 ma + 0.125 x 1000 ma = 186.25 ma. Using a 2400 ma hr battery, you'd think you could get 2400/186.25 or 12.9 hours from that battery. However, I think you'll find you'll get less than that in practice. I'm not familiar with the K1, but transmitters usually draw more current as the supply voltage drops, assuming the power out stays constant. Also, the battery is rated at 2400 ma hr, only if it is discharged over 20 hours. This means you should be able to draw 120 ma from it for 20 hours. But you couldn't drawn 1 amp for 2.4 hours. My guess is that you could use the K1 for at least 8 and maybe 10 hours at that duty cycle. That's still a long time. I'm sure my fist would get tired way before the battery died. If you took a break or your transmit duty cycle wasn't really 25%, you could get close to the 12 hours. 73's, John AA0VE Paul Webb wrote: HI all The current drain is about 65-75mA ,depending on volume setting about 70mA for normal listening. I have fitted 2400mA cells that just fit . I have checked the current drain at 4 watts from these cells and it seems about 1000mA (1Amp) So I have worked the following out but would just like a check done Irx = 60 Itx=1000 Tx duty cycle 50% (since CW) Ratio tx/rx 25% So in one hour I would be in tx mode for 15mins drawing 1000mA but since it’s at 50% duty that’s 500mA for 15mins Which works out to 250mA for 30 mins or 125mA for 1 hr Plus the rx drain of say 70mA so that’s 70mA/Hrs Total drain then is 125+70=195mA/Hr Since I have 2400mA/Hr cells that’s 2400/195=12.3Hrs use That just seems at lot of use at 25% tx/rx ratio and with 4 watts output power but it seems right to me., anyone confirm ? ___ 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 T1
Hi, As usual, I finished my Elecraft T1. So if you want to take a look inside and out, look at my pics on my website. http://homepage.mac.com/jfmenard/PhotoAlbum54.html Thanks for looking !!! 73 = /¯\/¯\/¯\/¯\/¯\/¯\ JEAN-FRANCOIS MENARD V A 2 V Y Z \_/\_/\_/\_/\_/\_/ FISTS #11896 Elecraft K2 #4130 Elecraft KX1 #999 http://homepage.mac.com/jfmenard = ___ 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 Twins, Side by side Transmitter and Receiver
For the bench Ham this option would make construction and operation easier by simplifying the front panel. Perhaps the receiver then be more 'general coverage'. Many hams like me already have a transceiver containing a crappy receiver portion and would love to upgrade to a good receiver. Jerry __ Yahoo! Mail - PC Magazine Editors' Choice 2005 http://mail.yahoo.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 internal battery
Slater, There is no harm to be done as long as the outside power supply voltage is higher than the battery voltage - with your 14.2 volt supply, that supply should operate the K2 while also charging the internal battery. It is the situation where the external supply is less than the battery voltage that requires the switch be turned off (with the switch in the ON position, the battery will supply the K2 until its voltage drops below the external supply voltage). The internal battery will not charge with the switch in the OFF position - but it would seem from you post that it had been ON for some time and the battery failed to charge for some reason. If that is the case, perhaps you do have something wrong with your wiring. Check the orientation of the diode and the wiring of the resistor, unfortunately these components are now ensconced inside the heat shrink, so you would have to remove the heatshrink to check - do that only if the following items do not check out properly: One way to check the resistor is to do a continuity check - disconnect the wire at the battery positive terminal, make certain the switch is in the ON position, and check the resistance fron the Faston connector to the red lead on the Aux DC connector - you should measure close to 6.2 ohms. Next switch your DMM to read diode forward voltage drop and use the same points for the probes - you should find the voltage drop to be 0.2 to 0.3 volts (you may have to reverse the probes). If either of these readings is incorrect, open the heat shrink and check your wiring against the diagram in the manual. The other thing you can do is check the voltage at the battery terminals with your 14.2 volt supply connected and powered on (remove the faston connector from the battery for this check) - you should read 13.8 to 14.0 volts with a power supply delivering 14.2 volts (this voltage will be lower when the battery is connected unless your battery is fully charged). If everything above checks out OK, read the battery voltage directly with your DMM. If you read something less than 13.2 volts, the battery is not fully charged - reconnect the battery, connect your 14.2 volt power supply, put the internal battery switch in the ON position and wait 2 days before checking the voltage again - if it is still low (and the wiring checks out good), you may have a bad battery on your hands. I believe that covers most all the bases on the internal battery situation - there is nothing really complex about it - the resistor should limit the current to the battery and with your 14.2 volt supply: - if the battery voltage is 9.6 volts, the current will be about 700 ma, but with a fully charged battery (13.2 volts terminal voltage), the charging current will be about 32 ma. 73, Don W3FPR -Original Message- As with most folks, my hindsight is perfect. This applies to the reading of manuals I have the K2 internal battery installed and neglected to read that the switch should be OFF when using outside power. As a result (I assume) my internal battery voltage is low at about 9.6 volts. A few days ago I did put the switch in OFF and hoped that the charge would come back. Not so. I have a 14.2 volt reading on my power supply plug to the K2. Any suggestions? Is it possible that my construction might be at fault? 73 and thanks Slater VE5OA Wolseley, SK Canada K2 - 4519 ___ 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] WTB: K2/100
I have two K2/100's and would like to buy another. I would like it to be fully loaded or close to it. Please email me with what you have and your asking price. I just returned from FS/AH8DX where I operated the CQWWSSB test and with 100 watts I am sitting at #2 World so far in my catagory with over 3500 qso's from the little K2/100 and a Butternut Vertical on the beach. Craig Maxey, AH8DX [EMAIL PROTECTED] ___ 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] Succumbing to temptation
Of all my radios, the only one capable of real QRO is the K2 - it goes up to 15W. So I was trying to work A22/JA4ATV on 7015 with five watts, patiently, and - nothing. I knew it could be done; I'd done it before. Then it sounded as though he was going QRT. Before I could really think through the implications, I had reached out and cranked that power to 11. I called once, and got ESE? Yes! The QSO was on. So I got a 339... But at what cost to my soul? Who was it, really, at the controls just then? LL/K3ESE ___ 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] A K2 question from a lazy guy
I have a K2 with the ATU among other options (but not the 100 watt amp) and I would like to measure my power output at the antenna terminal using a 'scope. The ATU provides two antenna jacks (switchable from the from panel). The jack which came with the basic K2 and is used if the ATU is not installed is covered with soft plastic (?) so it is not used. In order to measure output I have been opening the K2, disconnecting the ATU, put a 50 ohm dummy load on the original antenna jack and measuring the Vpp at the jack from inside of the K2. (The dummy load does not allow access to the 'hot' part of the jack from the outside of the rig) My questions are: 1) Can I (or should I) keep the ATU installed and measure at one of the ATU's antenna jacks? 2) Can I keep the ATU installed, put the dummy load on the ATU antenna jack and measure the voltage at the original (non-ATU) antenna jack, from the outside (this jack would not have a dummy load on it, as the dummy would be on the ATU jack -- actually the real dummy would be holding the RF probes ..hi). This would avoid opening the K2 to make the measurements. 3) Am I missing anything else? Is there a way to check the voltage from the outside without opening the cover? How about a T splitter at the jack? Thanks for your help. Tom, WB2QDG K2 1103 ___ 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] Succumbing to temptation
Lloyd Lachow wrote: Before I could really think through the implications, I had reached out and cranked that power to 11...So I got a 339... But at what cost to my soul? Who was it, really, at the controls just then? Well, we can hazard a guess: --- Nigel Tufnel: The numbers all go to eleven. Look, right across the board, eleven, eleven, eleven and... Marty DiBergi: Oh, I see. And most amps go up to ten? Nigel Tufnel: Exactly. Marty DiBergi: Does that mean it's louder? Is it any louder? Nigel Tufnel: Well, it's one louder, isn't it? It's not ten. You see, most blokes, you know, will be playing at ten. You're on ten here, all the way up, all the way up, all the way up, you're on ten on your guitar. Where can you go from there? Where? Marty DiBergi: I don't know. Nigel Tufnel: Nowhere. Exactly. What we do is, if we need that extra push over the cliff, you know what we do? Marty DiBergi: Put it up to eleven. Nigel Tufnel: Eleven. Exactly. One louder. Marty DiBergi: Why don't you just make ten louder and make ten be the top number and make that a little louder? Nigel Tufnel: [pause] These go to eleven. ---This is Spinal Tap -- -/___. _)Margaret Stephanie Leber CCP, SCJP/The art of progress / /(, /| /| http://voicenet.com/~maggie SCWCD/ is to preserve order/ ---/ / | / | _ _ _` _ AOPA 925383/ amid change and to / --/ ) / |/ |_(_(_(_/_(_/__(__(/_ K3XS / preserve change amid/ -/ (_/ '.-/ .-/ARRL 39280 /order.-A.N.Whitehead/ /(_/_(_/___AMSAT 32844_/[EMAIL PROTECTED]/ ___ 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 Battery
This may have been answered before, but I just recently purchased a pre-owned K2 and have installed the battery into the rig. In reading the manual, it is noted that the battery wants 13.8 to 14 volts to charge fully and using a voltage less than that will reduce battery life. My current supply is furnishing 13.1 volts. Is there a significant difference in this and what is called for? The power supply also furnishes power to other equipment, so I am not really anxious to see if I can coax more voltage out of it. Should I look for another power supply or is it not enough of a problem to worry about? Thanks, Wayne, W4HG ___ 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] Succumbing to temptation
Lloyd The K2 is also my QRO (15W) rig ! I also worked him with the K2 running 10W on 40m cw and got a 339 report. I guess the high power was the ticket. That's #210 (mixed bands and modes) for me so far using low power and QRP on a vertical antenna. Have not had the need to push for the 15W yet but under present conditions if I find a #211 on the air who knows ? Lars WB2ORD - Original Message - From: Lloyd Lachow [EMAIL PROTECTED] To: Elecraft@mailman.qth.net; [EMAIL PROTECTED] Sent: Friday, November 04, 2005 10:16 PM Subject: [Elecraft] Succumbing to temptation Of all my radios, the only one capable of real QRO is the K2 - it goes up to 15W. So I was trying to work A22/JA4ATV on 7015 with five watts, patiently, and - nothing. I knew it could be done; I'd done it before. Then it sounded as though he was going QRT. Before I could really think through the implications, I had reached out and cranked that power to 11. I called once, and got ESE? Yes! The QSO was on. So I got a 339... But at what cost to my soul? Who was it, really, at the controls just then? LL/K3ESE ___ 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: [fpqrp] Succumbing to temptation
At 11:16 PM 11/4/2005, Lloyd Lachow wrote: Before I could really think through the implications, I had reached out and cranked that power to 11. I called once, and got ESE? Yes! The QSO was on. So I got a 339... But at what cost to my soul? Who was it, really, at the controls just then? Your evil twin Skippy? Al, WS4P FP# 578 -To unsubscribe, mail to [EMAIL PROTECTED], msg: unsubscribe fpqrp-l -
RE: [Elecraft] A K2 question from a lazy guy
Tom asked: In order to measure output... 1) Can I (or should I) keep the ATU installed and measure at one of the ATU's antenna jacks? 2) Can I keep the ATU installed, put the dummy load on the ATU antenna jack and measure the voltage at the original (non-ATU) antenna jack, from the outside (this jack would not have a dummy load on it, as the dummy would be on the ATU jack -- actually the real dummy would be holding the RF probes ..hi). This would avoid opening the K2 to make the measurements. 3) Am I missing anything else? Is there a way to check the voltage from the outside without opening the cover? How about a T splitter at the jack? --- Hi Tom: I make as nice splitter with a coaxial T connector to access the RF line outside the K2. You can let the ATU tune up into the dummy load or you can bypass it. It should not make a lot of difference. The least accurate would be #2, where you are measuring the RF between the output filters and the ATU. 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 CW Net NON Announcement
Good Evening Folks, Remember: there will be NO nets this week. I have succumbed to the Dark Side. I may have been skunked during the Fox Hunt this week but the Sweepstakes are swift upon us and I shall prevail. I will work as a VE tomorrow for the beginning few hours. Then I travel back up the mountain via a long route past a Greek or Thai restaurant. When we get home Ms P will grade her student's homework and give them another assignment and an online lecture. I'll be banging my paddles and seeing how a paper dupe sheet works. Up all night working the low bands and then as the dawn breaks I'll start moving back up. Hopefully I will meet a few of you on my journey down and up the bands. Win, place, or show are not in the cards but I plan to have fun if it kills me! Seeing if I can beat what I did for Field Day is a goal. Getting better at CW is always my plan. Submit the results? Probably not since I haven't a clue how to figure out these fancy score thingies. Worn out and happy is how I'll be come Sunday evening. No Nets This Weekend! No Nets This Weekend! No Nets This Weekend! No Nets This Weekend! No Nets This Weekend! No Nets This Weekend! No Nets This Weekend! No Nets This Weekend! No Nets This Weekend! No Nets This Weekend! No Nets This Weekend! No Nets This Weekend! No Nets This Weekend! No Nets This Weekend! No Nets This Weekend! No Nets This Week!! Hasta luego, Kevin. KD5ONS (Net Op Without A Plan :) -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.362 / Virus Database: 267.12.8/161 - Release Date: 11/3/2005 ___ 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
