Hello Jack Thankfully, I have not been in a real emergency, but one of my prime directives would be to first establish a stable and exclusive channel, OK, it might have to change from time to time, but not like a contest situation. Having established a channel, one of the power-lean digital modes would be the choice for me: I keep hearing stories of working across the world on a dead band with half a noodlewatt. The incoming data is captured on a power-lean laptop, palmtop, Iphone unambiguously in plain language and forwarded or printed off if you must with a small printer.
I declare I haven't done any of this, it's just my firtile imagination - but I'd like to. David GUNA On 28/06/2012 22:43, Jack Brindle wrote: > Guys, I think the point is this: There is a real emergency. You are > off someplace with a big battery and have been operating for quite > some time, enough for the battery to have gone down. You have another > message to get through. In this situation, perhaps you should be > running CW at a lower power, but still, the situation could be very > real. > > Having a battery booster could be very helpful, and perhaps one should > be added to the ham's arsenal. On the other hand, running 100 watts on > battery is probably not a good idea either. Having been in emergency > situations where you do not know when operations will end, you do > everything you can to conserver your resources. That means lowering > the TX power as much as possible. Even still, Murphy says that at some > point when the battery is running out, someone will hand you an > emergency message to get through. How do you handle it? As I noted, > I'd then lower the power and grab the CW key... > > Jack Brindle, W6FB > > > > On Jun 28, 2012, at 2:54 PM, Matthew Zilmer wrote: > >> You might want to get a battery booster. Here is one >> http://stores.tgelectronics.org/Detail.bok?no=10 >> . >> >> I can recommend that one. Had one for a couple years and use it to >> boost to 14.5VDC from whatever voltage any time of day from a solar- >> charged battery. I think my K3 likes that 14.5V! >> >> Matt Zilmer >> Consultant - Product Management Dept. >> Magellan Navigation / MiTAC Digital Corp. >> Tel: (909) 394-6052 >> Cell: (909) 730-6552 >> Si fractum non sit, noli id reficere >> >> >> -----Original Message----- >> From: elecraft-boun...@mailman.qth.net >> [mailto:elecraft-boun...@mailman.qth.net >> ] On Behalf Of Peter Wollan >> Sent: Thursday, June 28, 2012 11:07 AM >> To: John Kountz >> Cc: elecraft@mailman.qth.net >> Subject: Re: [Elecraft] Field Day experience with K3 >> >> The problem here isn't the battery AH capacity, but the voltage >> supply. It could be dropping below 10 vdc because both radios are >> on the same supply, or because the power supply wires are too fine >> gauge, or because the battery is defective. >> >> The K3 is less robust to supply voltage than the other Elecraft >> radios. The K2 is rated for 10-15 volts; the K1, KX1, and KX3 go >> down a lot lower, I think 8 volts. I looked at the K3 documents to >> see what minimum voltage it requires, and I couldn't find it -- I >> think it's something like 11, but it may be 11.5 or even 12. >> >> You'd probably do fine just by using a separate battery for each >> radio, and not letting it run down too far. A voltage booster isn't >> needed, as lots of operators all over the world have demonstrated. >> >> Peter W0LLN >> >> >> On Thu, Jun 28, 2012 at 12:19 PM, John Kountz <j...@t6ee.com> wrote: >>> ... In tandom >>> operation, the Eagle was not affected by momentary voltage dips >>> (below >>> 10 >>> VDC) whereas the K3 would shut down. >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
