Re: [Elecraft] Portable Power for digital and Phone operation

Mike, In addition to the response I wrote earlier and others you have received, you should study the list archives. There have been many thoughtful and detailed posts on this topic in the last six months. I've made several myself. 73, Jim K9YC On 9/1/2017 10:37 AM, Michael Chowning wrote:

Re: [Elecraft] Portable Power for digital and Phone operation

On Fri, Sep 1, 2017 at 10:37 AM, Michael Chowning wrote: > Being there is no better place to get advice than this reflector, I am > seeking your recommendation. I have an Elecraft K3, P3, KAT500 & KPA500. > > I want to operate somewhat portable with the K3, P3, monitor

Re: [Elecraft] Portable Power for digital and Phone operation

There's no way you're going to run a KPA500 on battery.  IMO, power amps are totally out of place on FD, which I've always seen as a "barefoot" or QRP event. We do county expeditions for QSO parties like 7QP and CQP, and run two or three stations, each consisting of a K3, KPA500, KAT500, and

Re: [Elecraft] Portable Power for digital and Phone operation

wer load during the day and quite a while on the battery alone. Mel, K6KBE From: Michael Chowning <mike.chown...@mgccc.org> To: Elecraft Reflector <Elecraft@mailman.qth.net> Sent: Friday, September 1, 2017 10:54 AM Subject: [Elecraft] Portable Power for digital and Phone oper

[Elecraft] Portable Power for digital and Phone operation

Being there is no better place to get advice than this reflector, I am seeking your recommendation. I have an Elecraft K3, P3, KAT500 & KPA500. I want to operate somewhat portable with the K3, P3, monitor and laptop, buddipole on SSB and digital modes on Field day, and demonstrations on

Re: [Elecraft] Portable Power

On Mon,8/10/2015 3:45 AM, David Bondy G4NRT wrote: So, I am looking for advice on a portable power solution. Should I bee looking at LiFePO4 batteries Yes. or Sealed Lead-Acid batteries? No. What are the pros and cons of each? LiFePO4 gives more than double the Ah capacity for their

Re: [Elecraft] Portable Power

, August 10, 2015 3:46 AM To: elecraft@mailman.qth.net Subject: [Elecraft] Portable Power Clip Should they be left to run down and then charged or kept continuously on a charger? Clip __ Elecraft mailing list Home: http://mailman.qth.net

Re: [Elecraft] Portable Power

I'm sure that LiFePO4 is by far the best choice for ham gear and weight. I ran a 2.4 Ah 4S1P on my K2 on receive with a recording voltmeter knowing that the K2 would shut down before the battery was over-discharged. Fully charged, it started at 14.2 V, which dropped to 13.8 V very quickly

Re: [Elecraft] Portable Power

On 8/10/2015 10:14 AM, Jim Brown wrote: On Mon,8/10/2015 3:45 AM, David Bondy G4NRT wrote: How about charging them when they are not in use? Should they be left to run down and then charged or kept continuously on a charger? They should be charged using a proper charge controller. To

Re: [Elecraft] Portable Power

For most SOTA activations, rechargeable AA’s inside the KX3 work fine. Eneloop XX are very good batteries. They might be labeled “Eneloop Pro” in the UK. Look for a 2550 mAh Eneloop battery with low self discharge. For the KX3, the internal battery charger is fine. For your other radios,

[Elecraft] Portable Power

I have three portable Elecraft rigs (K1, K2 and KX3) and up to now power them from a wall outlet (I do have the internal battery charger unit in the KX3). I want to take them out and about and do some SOTA type stuff. So, I am looking for advice on a portable power solution. Should I bee

Re: [Elecraft] Portable Power

On Mon 10 Aug David Bondy G4NRT wrote: Should I be looking at LiFePO4 batteries or Sealed Lead-Acid batteries? You'll find quite a bit of discussion of batteries on the SOTA reflector, but apart from the cost, I can't see any obvious advantages of using SLABs any more. Choose an appropriate

Re: [Elecraft] Portable Power

David, you might want to take a look at the article on this at arpoc.org. the article is on the front page. On Mon, 10 Aug 2015 12:48 Erlend Grimseid egrims...@gmail.com wrote: +1 on the lifepo4. 4 in series gives an adequate voltage for most portable ham radios. From just under 14v, til they

Re: [Elecraft] Portable Power

+1 on the lifepo4. 4 in series gives an adequate voltage for most portable ham radios. From just under 14v, til they emtpty at about 8v. Get or build a pack with protection circuit as over charging an discharging ruins them pretty quickly. Tons of info on the web. Just google it. As for

[Elecraft] Portable power - goal zero?

Hello everyone, I have some questions related to running the KX-3 in the field on portable power. I read through a number of threads on this site and if I understand correctly the KX-3 generally favors a high voltage feed. I am wondering if anyone is using Goal Zero system for their portable

Re: [Elecraft] Portable power - goal zero?

Mark, I use a Sherpa100. Good pack, but the output voltage goes under 12V way before the pack is empty, so the KX3 will not let you use full power after a while. The KXPA100 is not as picky, so you can easily run a KXPA100 at 50W on the Sherpa100 until the end of the pack's power. It's a

Re: [Elecraft] Portable power, hydrogen fuel cell

It looks like these refillable cores hold the equivalent of 33 watt-hours of power. That's maybe 40% more power than the internal AA battery pack holds. The internal battery pack weighs ~240 grams, about the same as the reactor and a single core. So it seems like a fair trade in terms of

[Elecraft] Portable power, hydrogen fuel cell

Being new to this group I don't know if this has been posted before. Have a look at the Brunton Hydrogen Reactor at: http://www.ohgizmo.com/2013/10/23/brunton-hydrogen-reactor-can-keep-you-off- the-grid-for-months/ The Brunton web page at http://www.brunton.com/products/hydrogen-reactor

Re: [Elecraft] Portable Power Supply

Thanks, Phil (and everyone else). I'm planning on using the supply with the KX3 at the 10 watt output as well. I'm guessing something in the order of 2 amps will be needed. This should provide the needed current with a little overhead to spare. By the way, when I got home last night, I found

[Elecraft] Portable Power Supply

Greetings All, Here I am portable at my mother-in-law's place in NY (home QTH is CO). I was fortunate enough to bring my KX1 with me to make *good* use of my time while visiting. With the internal batteries (1-2 watts out) and a 36 foot wire tossed out of the window of her 4th floor apartment,

[Elecraft] Portable Power Supply

Greetings All, Here I am portable at my mother-in-law's place in NY (home QTH is CO). I was fortunate enough to bring my KX1 with me to make *good* use of my time while visiting. With the internal batteries (1-2 watts out) and a 36 foot wire tossed out of the window of her 4th floor apartment,

Re: [Elecraft] Portable Power Supply

Sorry for the double post. I received a nabble error message when I originally posted, thinking it didn't make it, so I posted again. I tried to delete one of them, but they persist! -- View this message in context:

Re: [Elecraft] Portable Power Supply

Samlex SEC 1235M. Lightweight, 8x7x2.5 dimensions, 30A output. Web: http://www.samlex.com/SAMLEX/site/products/productdetails.cfm?iProductId=136 You may not need the 30A output capacity, but it makes the PSU useful for a K3 or any 100-watt class xcvr as well. The 1235 is ultra-clean, and there

Re: [Elecraft] Portable Power Supply

I have a small Power Werx 35 amp supply and I use it all the time for the K3 and FT950 (backup). It is very small and excellent for transporting. Keith Sent from my iPhone please excuse typos On Jan 22, 2012, at 7:32 AM, Shel Radin KF0UR kf...@radins.us wrote: Greetings All, Here I am

Re: [Elecraft] Portable Power Supply

...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Shel Radin KF0UR Sent: Sunday, January 22, 2012 7:34 AM To: elecraft@mailman.qth.net Subject: [Elecraft] Portable Power Supply Greetings All, Here I am portable at my mother-in-law's place in NY (home QTH is CO). I was fortunate enough

Re: [Elecraft] Portable Power Supply

As the KX1 requires less than 1-amp, you might want to take a look at the Array Solutions PS-12R1A power supply. This is a linear regulated wall-wart type power supply, is is RF quiet, and it is only $19. Phil - AD5X __ Elecraft

Re: [Elecraft] Portable Power Supply

I used a Toshiba laptop computer power supply to power my K2 (receive only) for almost 3 years nonstop 24/7 during a propagation study, although I did add a voltage regulator placed betweeen the supply's output and the K2. This particular supply is rated to deliver up to 6 amps at 15V, but its