K3 : standby current
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Hi,
I havemeasured the standby current of the K3 at around 7mA. Is this typical ? Might be aproblem for floks wo leavethe radio connected t oa 12 car battery for extended periods? Bob ZD8RH _______________________________________________ Elecraft mailing list Post to: [hidden email] 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 |
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Bob,
I'm assuming you mean when it's "off." I think most car batteries are at least 100 AH. It can run some 14,285 hours or 595 days or 1.6 years to drain the battery entirely (if that's possible!). Anyway, I think you'll find that, if you measure drain on your car battery with everything turned off is probably more than this (car radio stand-by, alarm, remote control... hum... can't think of anything else off hand). While I haven't done it, 20 or 30 ma would not concern me. Anyone ever measure their battery current while the car is off? Regards, kurtt Kurt Pawlikowski, AKA WB9FMC The Pinrod Corporation [hidden email] (773) 284-9500 http://pinrod.com [hidden email] wrote: > Hi, > I havemeasured the standby current of the K3 at around 7mA. > Is this typical ? Might be aproblem for floks wo leavethe > radio connected t oa 12 car battery for extended periods? > > > Bob ZD8RH > _______________________________________________ > Elecraft mailing list > Post to: [hidden email] > 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: [hidden email] 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 |
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Depending on the car battery, better check the self-discharge rate.
For car batteries, the self-discharge rate is fairly high. It gets worse with age too. I don't have any accurate data on this, but once left a car with a new, fully charged battery at LAX for 38 days and had to call AAA to get a jump start. I had lifted the contactor before leaving the car in the lot too. So no phantom current was being consumed. The battery was fine, and lived a full life after the recharge - not defective. 73, matt, W6NIA K3 # 24, K2 # 2810 On Fri, 08 Feb 2008 22:14:23 -0600, you wrote: >Bob, > > I'm assuming you mean when it's "off." I think most car batteries >are at least 100 AH. It can run some 14,285 hours or 595 days or 1.6 >years to drain the battery entirely (if that's possible!). Anyway, I >think you'll find that, if you measure drain on your car battery with >everything turned off is probably more than this (car radio stand-by, >alarm, remote control... hum... can't think of anything else off hand). >While I haven't done it, 20 or 30 ma would not concern me. Anyone ever >measure their battery current while the car is off? > > Regards, > > kurtt > > Kurt Pawlikowski, AKA WB9FMC > The Pinrod Corporation > [hidden email] > (773) 284-9500 > http://pinrod.com > >[hidden email] wrote: >> Hi, >> I havemeasured the standby current of the K3 at around 7mA. >> Is this typical ? Might be aproblem for floks wo leavethe >> radio connected t oa 12 car battery for extended periods? >> >> >> Bob ZD8RH >> _______________________________________________ >> Elecraft mailing list >> Post to: [hidden email] >> 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: [hidden email] >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: [hidden email] 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 |
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In reply to this post by bobatbay
In a message dated 2/8/08 11:15:13 PM Eastern Standard Time, [hidden email]
writes: > I think most car batteries > are at least 100 AH. No, more like 50 AH. The biggest car battery I ever dealt with was for a VW diesel, and it was only 63 AH. Had to turn a 2 horsepower starter against the 23:1 compression ratio of the engine, *and* feed the glow plugs which required more than 30 amps. 73 de Jim, N2EY ************** Biggest Grammy Award surprises of all time on AOL Music. (http://music.aol.com/grammys/pictures/never-won-a-grammy?NCID=aolcmp00300000002548) _______________________________________________ Elecraft mailing list Post to: [hidden email] 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 |
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Good information, Ron. Also, true deep cycle batteries are considerably more
expensive than automotive batteries - you're paying for the lead. Most batteries in common stores labeled "deep cycle" aren't - it's just marketing. With only a few exceptions (such as one of the Optima line), my rule of thumb is that if the battery lists any type of "cranking amps" rating, even if it also lists an amp-hour rating, it isn't a deep cycle. We go through a fairly large number of deep cycle batteries at work (for remote weather stations), and any more our 100 AH batteries are costing us upwards of $250 each, and weigh about 70 pounds. Now, these are American-made Concorde AGM batteries (I try to do my part to keep tax money in-country); Chinese copycat batteries are about $100 less. 73, Mike KW1ND (Still counting the days for the K3...) _______________________________________________ Elecraft mailing list Post to: [hidden email] 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 |
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I now have firmware V. 1.66 loaded in my K3. I notice that it still only provides a sidetone volume from 0 to 40, whereas it initially would go higher (up to 60), both numerically and in actuality. I commented on this some time back, after the firmware was changed and the attainable volume was lowered. I know many feel that it is sufficient as currently provided. When I use headphones, the currently offered range is probably sufficient. Using the internal speaker though, I have to run it up near the top. However, I preferred the range as previously provided, particularly when you are driving a larger external speaker. I've tried several larger external speakers, and on most of them the sidetone is pretty anemic as currently provided. I know several others who feel as I do. Is this ever going to be returned to the original range? Why was it changed? Was it creating some other problem as originally configured? If not, I think it should be returned to the original attainable level. If you don't need that much, you don't have to use it. But some folks do prefer the higher level option. I'd sure like to see it get "on the list" for updating. Dave W7AQK _______________________________________________ Elecraft mailing list Post to: [hidden email] 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 |
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It is on the list Dave. But please don't expect every request to show up in the very next
firmware release. It's just not possible. The MON level was cut back some for a reason. Once that issue is sorted out, I believe Wayne will kick it back up again. ------------------------- 73, Greg - AB7R Whidbey Island WA NA-065 K3#0009 On Tue Feb 12 4:31 , "T. David Yarnes" sent: > >I now have firmware V. 1.66 loaded in my K3. I notice that >it still only provides a sidetone volume from 0 to 40, >whereas it initially would go higher (up to 60), both >numerically and in actuality. I commented on this some time >back, after the firmware was changed and the attainable >volume was lowered. I know many feel that it is sufficient >as currently provided. When I use headphones, the currently >offered range is probably sufficient. Using the internal >speaker though, I have to run it up near the top. However, >I preferred the range as previously provided, particularly >when you are driving a larger external speaker. I've tried >several larger external speakers, and on most of them the >sidetone is pretty anemic as currently provided. I know >several others who feel as I do. Is this ever going to be >returned to the original range? Why was it changed? Was >it creating some other problem as originally configured? If >not, I think it should be returned to the original >attainable level. If you don't need that much, you don't >have to use it. But some folks do prefer the higher level >option. I'd sure like to see it get "on the list" for >updating. > >Dave W7AQK > > >_______________________________________________ >Elecraft mailing list >Post to: [hidden email] >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: [hidden email] 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 |
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Greg,
Nope! No problem. Just wanted to make sure it was on the list. I couldn't remember if there was any indication previously that it would be returned to the original level (more or less). I have no clue how involved it is to make these changes either, but I wasn't trying to push it for any immediate action. I know there are lots of higher priorities. Thanks for the reply and info. Dave W7AQK ----- Original Message ----- From: "Greg - AB7R" <[hidden email]> To: "'Elecraft Reflector'" <[hidden email]>; "'T . David Yarnes'" <[hidden email]> Sent: Tuesday, February 12, 2008 8:11 AM Subject: Re: [Elecraft] K3 Sidetone Volume It is on the list Dave. But please don't expect every request to show up in the very next firmware release. It's just not possible. The MON level was cut back some for a reason. Once that issue is sorted out, I believe Wayne will kick it back up again. ------------------------- 73, Greg - AB7R Whidbey Island WA NA-065 K3#0009 _______________________________________________ Elecraft mailing list Post to: [hidden email] 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 |
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