Re: [Elecraft] Jumping K2
I had a problem similar in the past when transmitting at 12W I heard a sound like this one (very scarry) and lost power after on that band The problem was a bad solder on the toroïd associated to the band. After, no problem at all. = /¯\/¯\/¯\/¯\/¯\/¯\ JEAN-FRANCOIS MENARD V A 2 V Y Z \_/\_/\_/\_/\_/\_/ FISTS #11896 Elecraft K2 #4130 Elecraft KX1 #999 http://homepage.mac.com/jfmenard = Le 05-11-25 à 23:15, Ron D'Eau Claire a écrit : I've not seen that symptom, but I'd be very suspicious of the resettable fuse (F1) opening for some reason. Either it's gotten intermittent or you're drawing enough current to exceed its "trip point" at, I believe, 3 amps. The K2 is resetting to a previous frequency because you haven't done something to make it 'remember' the current settings yet. That'll happen any time you pull power. The howl... I'm not sure about but what's causing it might be what's causing the current overload on F1. First I'd check the current draw as you approach 12 watts. Ron AC7AC -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Friday, November 25, 2005 6:21 PM To: elecraft@mailman.qth.net Subject: [Elecraft] Jumping K2 Hi all My K2 # 4758 has gone strange. All is well if power is set to less than about 10 watts. But lately, if power is set to 12 w or more, it shuts down and emits a loud and nasty sounding "howl", which only lasts a moment. It promptly comes back on, but the frequency changes to a previously used frequency. This was not a one time happening, but can be duplicated. It seems to be so on all bands. The only options I have is the KAF-2, (which I love), and the noise blanker. Other than this problem, all is fine, and I am very pleased with my little sweetheart of a rig. I can understand its shutting down, but why is it changing frequency and barking at me?? In its earlier days when it shut down, it did so quietly and returned to the same frequency. Any ideas?? Tnx and 73, George, N4YM ___ 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] Jumping K2
I've not seen that symptom, but I'd be very suspicious of the resettable fuse (F1) opening for some reason. Either it's gotten intermittent or you're drawing enough current to exceed its "trip point" at, I believe, 3 amps. The K2 is resetting to a previous frequency because you haven't done something to make it 'remember' the current settings yet. That'll happen any time you pull power. The howl... I'm not sure about but what's causing it might be what's causing the current overload on F1. First I'd check the current draw as you approach 12 watts. Ron AC7AC -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Friday, November 25, 2005 6:21 PM To: elecraft@mailman.qth.net Subject: [Elecraft] Jumping K2 Hi all My K2 # 4758 has gone strange. All is well if power is set to less than about 10 watts. But lately, if power is set to 12 w or more, it shuts down and emits a loud and nasty sounding "howl", which only lasts a moment. It promptly comes back on, but the frequency changes to a previously used frequency. This was not a one time happening, but can be duplicated. It seems to be so on all bands. The only options I have is the KAF-2, (which I love), and the noise blanker. Other than this problem, all is fine, and I am very pleased with my little sweetheart of a rig. I can understand its shutting down, but why is it changing frequency and barking at me?? In its earlier days when it shut down, it did so quietly and returned to the same frequency. Any ideas?? Tnx and 73, George, N4YM ___ 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] Jumping K2
Hi all My K2 # 4758 has gone strange. All is well if power is set to less than about 10 watts. But lately, if power is set to 12 w or more, it shuts down and emits a loud and nasty sounding "howl", which only lasts a moment. It promptly comes back on, but the frequency changes to a previously used frequency. This was not a one time happening, but can be duplicated. It seems to be so on all bands. The only options I have is the KAF-2, (which I love), and the noise blanker. Other than this problem, all is fine, and I am very pleased with my little sweetheart of a rig. I can understand its shutting down, but why is it changing frequency and barking at me?? In its earlier days when it shut down, it did so quietly and returned to the same frequency. Any ideas?? Tnx and 73, George, N4YM ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Re: K2 Twins software?Linux?
Alexandru Csete wrote: Hi Bill, On 11/26/05, Bill Harris <[EMAIL PROTECTED]> wrote: Is there any logging and or control software out there for Linux OS? 73 Alex OZ9AEC Hello Alex, Try Marote in combination with Xlog. Works great for me. 73, Terry W9TRB ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Re: K2 Twins software?Linux?
Hi Bill, On 11/26/05, Bill Harris <[EMAIL PROTECTED]> wrote: > Is there any logging and or control software out there for Linux OS? I use Xlog http://pg4i.mattsnetwork.co.uk/linux/xlog.html for everyday logging and Tlf http://home.iae.nl/users/reinc/TLF-0.2.html for contest. Then, there is also Klog http://jaime.robles.nu/klog/eindex.html but I don't know much about that one. These logging programa can interface to your radio using the Ham Radio Control Libraries http://hamlib.sf.net/ which supports most known and unknown computer controllable radios out there. On the hamlib page you will find links to many other GUI programs, which use hamlib. If you are only interested in the K2, you should have a look at Marote http://www.hamsoftware.org/ 73 Alex OZ9AEC ___ 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: [NJQRP] WA3WSJ: Polar Bear Weather!
At 06:40 PM 11/25/2005, Edward R. Breneiser wrote: Hello all! This is great Polar Bear weather! I'm trying a direct route up to Round Head on the AT tomorrow Saturday, November 26th. Look for me on 20m and 40m around 14.060 And 7.040mhz +- qrm. Good luck, and seeing as this is CQ WWDX CW weekend, you better pack your 100 hz , 20 pole CW filter! Stay warm! John K5MO -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.362 / Virus Database: 267.13.7/182 - Release Date: 11/24/2005 ___ 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
Re: [Elecraft] Re: K2 Twins software?Linux?
Is there any logging and or control software out there for Linux OS? Later KXBill ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] KX1 on AAAs or Lithium Polymer?
A rechargeable battery system with a built in charger would have it's appeal especially if it can be charged from many different sources such as 110/120 VAC 60Hz, 220/240 VAC 50 Hz, 12 or 24 volt automobile cigarette lighter sockets, solar power, etc. If Braun can do it with a razor, just think how much better Elecraft could design it. While your updating the KX1 how about adding receive capability down to to 3.2 Mhz. This would allow listening to the 60, 75, and 90 meter shortwave broadcast bands as well as the 80 and 60 meter amateur bands. :-) Darrell VA7TO On November 25, 2005 09:41 am, wayne burdick wrote: > We could (in theory) create a new bottom cover option for the KX1 that > would include two 4-cell AAA holders or a LiPo battery, plus a charge > controller that would run from the KX1's DC input jack. The battery > holders and charge controller components could be soldered to a thin > PCB module that runs the full length of the bottom cover. In the case > of AAAs, we'd include a switch to select rechargeable or > non-rechargeable batteries. You might be able to recharge while > operating, although this would have to be tested, since some charge > controller generate significant noise. > > Any input on such a product would be appreciated. If there were > significant interest, we'd try to have it ready early next year. > > 73, > Wayne > N6KR > -- Darrell Bellerive Amateur Radio Stations VA7TO and VE7CLA Grand Forks, British Columbia, Canada ___ 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
[NJQRP] WA3WSJ: Polar Bear Weather!
Hello all! This is great Polar Bear weather! I'm trying a direct route up to Round Head on the AT tomorrow Saturday, November 26th. Look for me on 20m and 40m around 14.060 And 7.040mhz +- qrm. I plan to hike up the mountain in about an hour or so then setup, eat some lunch and operate for an hour or two. This is the same spot where N7UN/2 and myself camped at the other week. I found a direct way up to Round Head so I can spend more time on the air. Look for me to start around noon. This will be my birthday hike- I'll be 54 on 11/28! By the way, I think I'll take Trevor Boy as it's his actual birthday! Trevor Boy will be seven years old. Let's see that's about 42 years old, but you would never know it as he acts like a pup! So listen for the Birthday Boys of Round Head tomorrow on the AT here in PA. 72, Ed, WA3WSJ ___ njqrp mailing list [EMAIL PROTECTED] http://www.applegate.org/mailman/listinfo/njqrp
[Elecraft] Re: K2 Twins software
FWIW, I use two K2/100s in my SO2R contest station. I use TRlog contest software. TRlog has a command called EXCHANGERADIOS that immediately swaps the frequencies in the two rigs (i.e. frequency on rig A replaces freq on rig B and vice-versa). I find this useful if I'm tuning on one band while CQing on the other and then decide to start CQing on the opposite band. Even though I've got my station set up to have either rig as the "prime" rig, I prefer my left rig as my run rig. I've also used my two K2s to tune on the same band as I'm CQing. This requires a separate antenna as far away from my transmitting antenna as possible. I use an old vertical for same band tuning. It isn't the greatest antenna, but that is OK since I have the ability to quickly swap frequencies with the EXCHANGERADIOS command. I can realistically get within 15 KHz of my transmitted signal without too much of a problem copying stations. My same band vertical is only 100 feet from my transmitting quads because that is all the room I have. I could never have done this with my old IC-765s. The K2s are THAT good at close in rejection! There is also a SWAPRADIOS command that swaps the key, mic, headphones and logged frequency to the other radio. The swapping is controlled by a pin in the parallel port changing state. That pin can be use with Top-Ten Devices DXDoubler, your own interface (as I use) or several other manufacturers SO2R boxes. The downside to TRlog for some people is that TRlog is a DOS program and probably will never be ported over to Windows, but it handles all the packet interfacing, rig interfacing and contest logging I will ever use. Bob K5WA ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] KX1 on AAAs or Lithium Polymer?
wayne burdick wrote: > Any input on such a product would be appreciated. If there were > significant interest, we'd try to have it ready early next year. LiPo would be nice, for me: I am already using NiMH in the standard cover and given my typical operating situation having 8 cells instead of 6 isn't worth the expense. This assuming I manage to save something to buy it, of course ;-) B73, Andrea. -- Homepage: http://andrea.borgia.bo.it /Amateur radio: IZ4FHT ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] KX1 on NiMH or LiPo
"Iey" ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] KX1 on NiMH or LiPo
I second that emotion. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Alan Fryer Sent: Friday, November 25, 2005 12:55 PM To: Elecraft Reflector Subject: [Elecraft] KX1 on NiMH or LiPo Wayne I would certainly be interested in a scheme for NiMh AAAs or LiPo with an internal charge controller. That would really be a sweet addition to an already fine rig. Alan, N3BJ -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.362 / Virus Database: 267.13.7/182 - Release Date: 11/24/2005 ___ 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 --- This email message, including any attachments, is for the sole use of the intended recipient(s) and may contain information that is proprietary, confidential, and exempt from disclosure under applicable law. Any unauthorized review, use, disclosure, or distribution is prohibited. If you have received this email in error please notify the sender by return email and delete the original message. Please note, the recipient should check this email and any attachments for the presence of viruses. The organization accepts no liability for any damage caused by any virus transmitted by this email. == ___ 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] speaker
Hello Stewart, Can you recommend any DSP noise reduction program(s) that are worth experimenting with? 73 Paul ZL3IN Stewart G3RXQ wrote: I changed my mono speaker jack for a stereo one, so that I could get audio on both channels into my computer sound card line input when running a DSP noise reduction program. Simple to do. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] KX1 on AAAs or Lithium Polymer?
Wayne, I operate almost exclusively with 10 NiMH AA's and would like an alternate bottom that holds that, if it fits in your production plans. I would also like an 8 cell holder for the Lithium cells. I keep the Lithium primary cells in place but use them only for RX or for when I am using the HFPacker amp to keep from overdriving the amp. I have Lithium Poly rechargeables I got on sale at Halted and might hook them up using the Batteryspace protection board, but the 11.1v is not atractive. A 14.8v with a dropping diode might; I know Oliver KB6BA has been active in this area. Leigh / WA5ZNU On Fri, 25 Nov 2005 9:40 am, wayne burdick wrote: We've located a 4-AAA cell battery holder that would fit inside the KX1 (one at each end of the bottom cover, as with the present AA holders). 8 cells would provide 10 or 12 volts, giving you significantly more power output than 6 of the same cells (as much as 4 watts). The tradeoff would be in battery life. AAA-size NiMH, alkaline and lithium cells provide around 1000 to 1250 mA-hours, or around half as much as similar high-capacity AA cells. Another option would be to use a small lithium polymer battery. 11 volts at up to 1450 mA-hours or so might be possible, although these batteries are very expensive. AAAs might be preferable in a pinch because you can buy them anywhere. In the field, you can borrow triple-As from flashlights or other portable electronic devices. The difference in weight between 8 triple As and a LiPo battery is probably only couple of ounces, so weight is not likely to be the primary criteria. You'd probably get five to eight hours of casual operation with NiMH, LiPo, or lithium cells, which are preferable to alkalines because of their flat discharge curve. Of course you could recharge NiMH or LiPo cells in the field with a small solar panel. (Has anyone tried using 8 AAA cells with the KX1?) We could (in theory) create a new bottom cover option for the KX1 that would include two 4-cell AAA holders or a LiPo battery, plus a charge controller that would run from the KX1's DC input jack. The battery holders and charge controller components could be soldered to a thin PCB module that runs the full length of the bottom cover. In the case of AAAs, we'd include a switch to select rechargeable or non-rechargeable batteries. You might be able to recharge while operating, although this would have to be tested, since some charge controller generate significant noise. Any input on such a product would be appreciated. If there were significant interest, we'd try to have it ready early next year. 73, Wayne N6KR ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] KX1 on NiMH or LiPo
Wayne I would certainly be interested in a scheme for NiMh AAAs or LiPo with an internal charge controller. That would really be a sweet addition to an already fine rig. Alan, N3BJ -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.362 / Virus Database: 267.13.7/182 - Release Date: 11/24/2005 ___ 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
Re: [Elecraft] KX1 on AAAs or Lithium Polymer?
i am still using NiCad's...in my KX1. KX1 - 1/2AA NiCad Battery Modification...Rev. D. Originally i had 6 'AA' NiCad batteries in the KX1 but i needed more power for pedestrian mobile operation. i removed 4 of the 'AA' NiCad batteries and added 8 - 1/2'AA'-250's (short type AA) to boost the voltage to 14 VDC. That raises the output power to 3 Watts. The operating time is about 3 hours on a full charge (depending on your code speed and number of "Q's).. These batteries are available from Batteries Plus. (After these batteries age, they will have slightly lower terminal voltage, then you can add 2 additional 1/2 AA batteries; i started with 8 and now i am using 10 - 1/2 AA-250's and one full sized AA NiCad, still keeping the voltage at or below the KX1 maximum of 14V. So be sure to buy a few extra 1/2 AA's). The 1/2 AA's have flat contacts so they need to have a little solder blob added to the + terminal so they will touch each other when in series in the battery holder. These 1/2 AA 'short' batteries (250 mAH) are 7/8 inch long. (There is a lon ger 1/2 'AA' battery that is 1.2 inches long but it won't fit the battery holder). Note: These NiCad batteries weigh 4 oz and the Enegerizer L91's also weigh 4 oz. The capacity of the Energizer L91 non-rechargeable battery is 2.9 AH (at 1.0V discharge voltage) and the Rechargeable NiCad gives 0.25 AH, thats only about 9% of the L91 capacity, but it's still very practical. Pictures of the NiCad batteries are on the HFPack2 Yahoogroup web site. See: http://photos.groups.yahoo.com/group/hfpack2 You will have to log in to see the pictures.. Look in the 'Photos' area, Page 2, and in the 'W0RW-Paul' folder. ps: If you make any modification to your KX1 it will void the warranty... --- Here is a how you can charge the internal NiCad's without taking the KX1 cover off. (This is not suggested if you are going to use only the primary L91 Li batteries). i installed a small 2.5 mm mono phone jack with a NC switch to the lower corner of the battery chassis. You have to drill hole in the chassis. The jack goes right below the auxiliary DC connector J1. Note: For the J1 power switching modification to work correctly this jack must be isolated from the chassis. That requires a few mica or thin fiber washers and a small piece of tubing, or a flanged insulating washer. This jack has a NC switch built into it so when you plug in the charging plug the internal NiCad batteries are disconnected from the radio and the charging voltage is applied to the batteries even if the radio is turned on. The battery pack wiring connection changes are: black wire to the new charging jack ground pin, red wire to the jack center pin and the normally closed switch wire goes to the red wire of J5-1. Now you can operate the KX1 from the auxiliary DC connector while simultaneously charging the internal NiCad batteries through the new charging jack. You can also monitor the battery voltage through this connector or when not charging the battery, The battery voltage can be displayed by pressing "RIT" and "Band" simultaneously, Twice. The charger can be made from any wall transformer that puts out about 18VDC open circuit. The charging current for the 1/2AA NiCad batteries should be set for 50 ma for 5 hours. You can add a switch to the charger and add an additional resistor to give 10ma for trickle charging. If you leave the KX1 NiCads on trickle charge it will always be ready to go. You will need to insert an appropriate resistor in series with the transformer to limit the charging current. (If you change the number of batteries in the unit you will have to re-adjust the charging current). - Here is the KX1 Battery Switching Modification: The original power distribution design "AND's" the internal battery and external battery sources together using 2 diodes. If your external battery voltage goes below the internal battery voltage, the internal batteries will start draining. i left my KX1 on for a few days and after i ran down the external battery and the internal batteries took over and became discharged. These were the expensive Lithium "AA" Primary batteries (L91's). i wanted to save the use of these Li batteries for special uses like Pedestrian Mobiling: See the w0rw/pm KX1 report on the Adventure Radio Society web site at: http://www.arsqrp.com/ars/pages/back_issues/2004_text/0204_text/W0RW.html Here are the details of the DC J1 switching Modification: The Elecraft DC Power connector has an unused (normally closed) switch. This modification will use that switch so that when an external power source is connected the internal batteries will be disconnected, and conversely when the DC power plug is removed the internal batteries will be reconnected. Open the unit on an ESD grounded work station. Separate the battery compartment by pulling the battery connector (J1) out. Cut the 2 traces that ground P1-2 "-" (getting scary now)...Top Si
Re: [Elecraft] KX1 on AAAs or Lithium Polymer?
Think about a portable battery pack which the sub-zero operator can keep in an inside pocket. This pack supports 8 or (better) 10 x AA Ni-MH. This gives us 2800 mAH @ 12v. The case should be rugged. You could add a battery status indicator - the Elecraft junkies would then have another kit they can buy (the BAT1 kit)! Then of course there's solar inputs to run in parallel - would be very handy! Simon Brown --- www.hb9drv.ch www.laax.ch - Original Message - From: "wayne burdick" <[EMAIL PROTECTED]> Any input on such a product would be appreciated. If there were significant interest, we'd try to have it ready early next year. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] KX1 on AAAs or Lithium Polymer?
We've located a 4-AAA cell battery holder that would fit inside the KX1 (one at each end of the bottom cover, as with the present AA holders). 8 cells would provide 10 or 12 volts, giving you significantly more power output than 6 of the same cells (as much as 4 watts). The tradeoff would be in battery life. AAA-size NiMH, alkaline and lithium cells provide around 1000 to 1250 mA-hours, or around half as much as similar high-capacity AA cells. Another option would be to use a small lithium polymer battery. 11 volts at up to 1450 mA-hours or so might be possible, although these batteries are very expensive. AAAs might be preferable in a pinch because you can buy them anywhere. In the field, you can borrow triple-As from flashlights or other portable electronic devices. The difference in weight between 8 triple As and a LiPo battery is probably only couple of ounces, so weight is not likely to be the primary criteria. You'd probably get five to eight hours of casual operation with NiMH, LiPo, or lithium cells, which are preferable to alkalines because of their flat discharge curve. Of course you could recharge NiMH or LiPo cells in the field with a small solar panel. (Has anyone tried using 8 AAA cells with the KX1?) We could (in theory) create a new bottom cover option for the KX1 that would include two 4-cell AAA holders or a LiPo battery, plus a charge controller that would run from the KX1's DC input jack. The battery holders and charge controller components could be soldered to a thin PCB module that runs the full length of the bottom cover. In the case of AAAs, we'd include a switch to select rechargeable or non-rechargeable batteries. You might be able to recharge while operating, although this would have to be tested, since some charge controller generate significant noise. Any input on such a product would be appreciated. If there were significant interest, we'd try to have it ready early next year. 73, Wayne N6KR --- 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] Hex Key
Please contact me off site, direct Rick NK9G [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
Re: [Elecraft] speaker
I changed my mono speaker jack for a stereo one, so that I could get audio on both channels into my computer sound card line input when running a DSP noise reduction program. Simple to do. Stewart G3RXQ On Fri, 25 Nov 2005 08:08:54 -0800, Vic K2VCO wrote: > n3drk wrote: > >> I connected an external speaker to the ext speaker jack on the back of the >> k2. However only one speaker >> has audio coming from it. I plugged the same ext speaker into the mark v >> and the two speakers >> have audio. These are stereo speakers. Should not the k2 have audio coming >> from both speakers? >> > The external speaker jack on the back of the K2 is a mono jack. So if > the speakers you plug in have a stereo plug, only the speaker that > connects to the tip will have audio. You could replace the K2's jack > with a stereo jack, but then plugging a mono plug into it would short > the audio. Best to get an adapter at Radio Shack. ___ 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] speaker
n3drk wrote: I connected an external speaker to the ext speaker jack on the back of the k2. However only one speaker has audio coming from it. I plugged the same ext speaker into the mark v and the two speakers have audio. These are stereo speakers. Should not the k2 have audio coming from both speakers? The external speaker jack on the back of the K2 is a mono jack. So if the speakers you plug in have a stereo plug, only the speaker that connects to the tip will have audio. You could replace the K2's jack with a stereo jack, but then plugging a mono plug into it would short the audio. Best to get an adapter at Radio Shack. -- 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] speaker
John: The external speaker jack is mono. When you plug a stereo plug into a mono jack, you only get sound on the speaker connected to the tip of the plug. I guess you could either replace the mono jack with a stereo one or replace the stereo plug with a mono one. Either way, you'd have an impedance mismatch. If you are using amplified speakers, maybe it would work if you plugged them into the headphone jack, which is a stereo jack. Some think the K2 audio output is marginal. I can't imagine it getting better if you try to drive 2 non-amplified speakers instead of 1. Good luck, John AA0VE n3drk wrote: I connected an external speaker to the ext speaker jack on the back of the k2. However only one speaker has audio coming from it. I plugged the same ext speaker into the mark v and the two speakers have audio. These are stereo speakers. Should not the k2 have audio coming from both speakers? john ___ 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] speaker
I connected an external speaker to the ext speaker jack on the back of the k2. However only one speaker has audio coming from it. I plugged the same ext speaker into the mark v and the two speakers have audio. These are stereo speakers. Should not the k2 have audio coming from both speakers? john ___ 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] SK
Hello Elecrafters, Sad to say I am no longer one of you. Medical reasons have caused me to completely remove myself from my love, CW, and my K2 was among the first equipment to go. I enjoyed it and you. I have left the Hex key which I will offer for sale. Good key! The tower and antennas will start out by renting the use of a crane. One last hurrah for the K2, I lilked it best of all the CW rigs I have used in almost 70 years of Morse. 73, Earl W7TK ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] Re: K2 IF Alignment question
Hello Guy, I had a similar experience, till I discovered that you have to turn the AGC off. Then you have a very sharp peek on your voltmeter or your audio when tuning L34. Worked fine for me! Greetings, Gerard, PA1GP Original message: From: [EMAIL PROTECTED] Subject: [Elecraft] K2 IF Alignment question Happy Turkey Day to all, Symptom: In aligning the IF Amp on K2 #5091, I am not hearing any signal strength variation when adjusting L34 per the instructions on pg. 62. The weak signal near 7000 khz is relatively loud but moving the slug doesn't result in any variation that I can hear. I can peak signals with L1 and L2 for the 40m bandpass alignment. And actual band signals seem the same signal strength when compared to an ICom 746. All resistance test readings and all other alignment tests are within range. Is there normally much signal variation when aligning the IF amp? If so, please point me in a direction for troubleshooting. Thanks in advance, Guy N7UN/2 ___ 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
