Re: [Elecraft] Power supply for KX3

On 10/10/2021 5:08 PM, Howard Hoyt wrote: And this was an engineering decision with the Kx33: incorporate a large choke inside the PS case and make it much larger and more expensive for the small percentage of people who might need it or keep it small and within the commonly available case

Re: [Elecraft] Power supply for KX3

>>Jim, K9YC posted: >>"I have one of these PSUs, but haven't tried to choke it." And this was an engineering decision with the Kx33: incorporate a large choke inside the PS case and make it much larger and more expensive for the small percentage of people who might need it or keep it small and

Re: [Elecraft] Power supply for KX3

ssage- > From: elecraft-boun...@mailman.qth.net > [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Rich WC3T > Sent: Friday, October 08, 2021 8:37 PM > To: j...@audiosystemsgroup.com > Cc: elecraft@mailman.qth.net > Subject: Re: [Elecraft] Power supply for KX3 > >&g

Re: [Elecraft] Power supply for KX3

I would just keep the Astron-35 (I bought one in 1980 and still works). But I upgraded to a Astron-50M years ago and it supplies the entire shack (fused at 30A). I also use a 28v Astron for supplying 24v devices. But Astron makes 8A and 10A switching supplies (we started swapping them out

Re: [Elecraft] Power supply for KX3

oun...@mailman.qth.net] On Behalf Of Rich WC3T > Sent: Friday, October 08, 2021 8:37 PM > To: j...@audiosystemsgroup.com > Cc: elecraft@mailman.qth.net > Subject: Re: [Elecraft] Power supply for KX3 > >> I have used a Samlec 1223 with no RF noise apparent. And as for the A

Re: [Elecraft] Power supply for KX3

Subject: Re: [Elecraft] Power supply for KX3 > I have used a Samlec 1223 with no RF noise apparent. And as for the Astrons > that we all regret losing, those are linear analog and don’t do the noise > thing. :) __ Elecraf

Re: [Elecraft] Power supply for KX3

“My Radio Shack supply is entirely quiet, it is a classic straight-through design. No switching going on here. 72 Howard Kraus, K2UD” Beware of old linear supplies, unless yours is fitted with over Voltage crowbar protection. I too have a Pro Audio PSU and haven’t had any noise issues. It

Re: [Elecraft] Power supply for KX3

My Radio Shack supply is entirely quiet, it is a classic straight-through design. No switching going on here. 72 Howard Kraus, K2UD -From: "Dan Presley" To: "K2" Cc: Sent: Friday October 8 2021 10:42:44PM Subject: Re: [El

Re: [Elecraft] Power supply for KX3

The Radio Shack supplies are abysmally noisy. Don’t go there…the Pro Audio is far superior. Dan Presley 503-701-3871 danpresley@me. com n7...@arrl.net > On Oct 8, 2021, at 17:49, Jim Brown wrote: > On 10/8/2021 4:14 PM, qr...@roadrunner.com wrote: >> The ubiquitous Radio Shack 22-124A

Re: [Elecraft] Power supply for KX3

I have used a Samlec 1223 with no RF noise apparent. And as for the Astrons that we all regret losing, those are linear analog and don’t do the noise thing. :) > On Oct 8, 2021, at 20:49, Jim Brown wrote: > > On 10/8/2021 4:14 PM, qr...@roadrunner.com wrote: >> The ubiquitous Radio Shack

Re: [Elecraft] Power supply for KX3

On 10/8/2021 4:14 PM, qr...@roadrunner.com wrote: The ubiquitous Radio Shack 22-124A (and its variants) power supply is a perfect match for the KX-3. Manufactured by the millions and cheaper than dirt on that watery place or under hamfest tables it meets the current-handling needs of the KX-3.

Re: [Elecraft] Power supply for KX3

-From: "Paul Huff" To: "Elecraft Email List" Cc: Sent: Friday October 8 2021 9:58:13AM Subject: [Elecraft] Power supply for KX3 My beautiful bride of 44 years is encouraging me to upgrade my shack to an Elecraft KX3. (Seriously, she is the one who brought

Re: [Elecraft] Power supply for KX3

I have been operating for 2 or 3 years with a KX3/PX3 combination, with the KXPA100 amplifier to bump my signal up when I need it. It works remarkably well, far superior to my venerable old Icom 746 Pro. I have a Yaesu FT-101 that needs a little work, but it's still an old favorite. The KX3 lends

Re: [Elecraft] Power supply for KX3

 "Elecraft offers a little switcher made by Powerwerx for $119" https://elecraft.com/collections/power-supplies This power supply appears to be very similar to several that are on the market.  I have the JETSTREAM JTPS31MB.  If you look at the chassis you will see it has punch-outs to

Re: [Elecraft] Power supply for KX3

I'm another add on for the KX33 from Pro Audio Engineering. I've had that supply pretty much since it came out and never had a single problem or any noise from it. Howie also sells a splitter for it to allow powering both the KX3 and PX3 from it, if you wind up with the PX3 in the future. I

Re: [Elecraft] Power supply for KX3

Paul, The Astron is a real workhorse and a keeper if in good shape. If you must go light/small and are just powering the KX3, I would point you to Howie’s (ProAudio Engineering Kx33) power brick. It is nominally a 4A supply in same form as the laptop power supplies. Mine is quiet and a solid

Re: [Elecraft] Power supply for KX3

9 > To: Paul Huff > Cc: Elecraft Email List > Subject: Re: [Elecraft] Power supply for KX3 > > If it's just for the KX3, I recommend: > https://proaudioeng.com/products/pae-kx33-low-rfi-ac-power-supply/ > > On Fri, Oct 8, 2021 at 9:58 AM Paul Huff wrote: > > >

Re: [Elecraft] Power supply for KX3

Paul, The ProAudio Engineering Kx33 Power Supply is an excellent choice if you are planning to run just the KX3. 73, Henry - K4TMC On Fri, Oct 8, 2021 at 9:57 AM Paul Huff wrote: > My beautiful bride of 44 years is encouraging me to upgrade my shack to an > Elecraft KX3. (Seriously, she is

Re: [Elecraft] Power supply for KX3

If it's just for the KX3, I recommend: https://proaudioeng.com/products/pae-kx33-low-rfi-ac-power-supply/ On Fri, Oct 8, 2021 at 9:58 AM Paul Huff wrote: > My beautiful bride of 44 years is encouraging me to upgrade my shack to an > Elecraft KX3. (Seriously, she is the one who brought it up!)

[Elecraft] Power supply for KX3

My beautiful bride of 44 years is encouraging me to upgrade my shack to an Elecraft KX3. (Seriously, she is the one who brought it up!) At the same time I will be reducing the footprint of all of my accumulated gear including my ancient, but still working, Astron RS-35A power supply.

Re: [Elecraft] Power supply V drop - was poor CW on K3S

ie k3ICH -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Fred Jensen Sent: Saturday, April 25, 2020 2:20 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Power supply V drop - was poor CW on K3S "glass fuses"? You want to avoid the in-line cylindr

Re: [Elecraft] Power supply V drop - was poor CW on K3S

This is a huge misperception that is very dangerous! If the power supply (PSU) doesn't have an in-line fuse on the 12VDC, then you're taking a grave chance should a short occur in the cable between the PSU and radio. Ask folks who have set their cars on fire. Like a battery, there should be a

Re: [Elecraft] Power supply V drop - was poor CW on K3S

On 4/25/2020 12:19 PM, Fred Jensen wrote: ... If this is a fixed installation and your power supply has some form of overcurrent protection [e.g. crowbar], there may be no need for any fuses in the power cable. A crowbar circuit will short the output of the PS to prevent an over-voltage

Re: [Elecraft] Power supply V drop - was poor CW on K3S

"glass fuses"?  You want to avoid the in-line cylindrical cartridge fuses, the holders almost always have too much resistance.  Blade-type automotive fuses are much better ... much more contact surface, much more contact pressure, and a wiping action as you insert the fuse.  A drop of DeOxit

[Elecraft] Power supply update

I'm trying to keep the subject line updated... I'm now powering the K3S with just under 3 feet of #10, direct from the power supply to the rig, nothing else in the line. The K3S reads 14.2V at rest, 13.6V at full power out. The power supply at the terminals, using my DVM, reads 14.50 at rest,

Re: [Elecraft] Power supply V drop - was poor CW on K3S

If it’s a regulated power supply with crowbar And the radio has a fuse why are you using inline fuses? Sent from my iPhone > On Apr 25, 2020, at 10:04, Chuck Chandler wrote: > > Here's an update. > > I replaced the power cable running from the powerstrip with a 3-foot length > with glass

[Elecraft] Power supply V drop - was poor CW on K3S

Here's an update. I replaced the power cable running from the powerstrip with a 3-foot length with glass fuse holders in each leg. I also adjusted the power supply to 14.50V at rest. The K3S now shows 14.2V at rest. At 100W TX the K3S shows 13.2V, so a 1 volt drop. Way too much. The power

Re: [Elecraft] Power supply for KS

Sadly, that is not always true.  There is a remarkable dependence upon frequency as well.  The sweet spot on my K3S is at 7 MHz.  The IMD is actually lower at 100W than at lower power.  That said it goes to pot at 1.8 and 25 MHz but is lower again at 28 MHz. Wes  N7WS On 4/20/2020 1:55 PM,

[Elecraft] Power supply for KS

Thanks for all the responses. Bother way the heading should have K4 Typo on my part 73 Richard __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post:

Re: [Elecraft] Power supply for KS

Just adjust the voltage to 14.5 to 14.8 no load, usually via an internal adjustment, and be done with it. 73 Bob, K4TAX On 4/20/2020 2:59 PM, Richard Donner wrote: Hi Ken Thanks for the info. I am not in a rush yet. I noticed that the voltage is 13.4.. Maybe a little higher might be

Re: [Elecraft] Power supply for KS

I'm using the Astron SS-30M for my station.  Actually I have 2 of them on the desk, one for the K3S and accessories and the other one for another brand of radio and accessories.  I have found they are reliable, quiet and no RFI issue between 160M and 1296 MHz, including 144 MHz, 432 MHz. 73

Re: [Elecraft] Power supply for KS

Maybe find an old one that still working?? My Astron 50A analog PS has been run 24/7 for 16 years (or so) and was in commercial use before (years?). Previous to it I bought an Astron V35M (new in 1980) which lasted many years until blowing (open) one of the rectifier diodes. It sits on my

[Elecraft] Power supply for K4

I still like the Astron linear supplies. They go forever and make no RF noise but I am Old School. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post:

Re: [Elecraft] Power supply for KS

On 4/20/2020 1:05 PM, Rick Bates, NK7I wrote: Wayne has said that 14.2V is desirable (as read on the display, so ~14.4V at the source AND the input connector at the radio).  This provides a more clean signal. That flies in the face of Ohm's law, which describes the IR voltage drop in the

Re: [Elecraft] Power supply for KS

I have a couple DuraComm LP-25's.  I've never had a single issue with them.  I adjusted a pot and took the voltage up to 14.5 volts. The LP-25's are switching power supplies.  I have not detected any receiver noise, so they're clean in my setup.  They have a cooling fan which only comes on

Re: [Elecraft] Power supply for KS

I second IOTA. I've used them in my RV, replacing another brand to get rid of the RFI.  Mission accomplished. Disclaimer:  IOTA is located in Tucson, and a long time ago in another life I moonlighted for the founders in another startup company. Wes  N7WS On 4/20/2020 12:51 PM, Ken

Re: [Elecraft] Power supply for KS

Simply verify that the panel voltage is the same was what a known meter reads at the output, adjust the front panel meter as required.  (Most panel displays are off or simply not as accurate.)  Then one can use a permanent marker to place a line on the meter display, off the tip of the needle

Re: [Elecraft] Power supply for KS

If you insert a jumper in the jack on the side it raises the voltage to 14.2. Ken WA2LBI On Mon, Apr 20, 2020 at 3:59 PM Richard Donner wrote: > Hi Ken > Thanks for the info. > I am not in a rush yet. I noticed that the voltage is 13.4.. Maybe a > little higher might be better. Not

Re: [Elecraft] Power supply for KS

The same supply is sold under the DURACOMM name. I believe there is a pot accessible through a hole in the case to adjust the voltage. My $0.02: I prefer supplies that are in a desktop case with meters for current and voltage. The meters give me peace of mind and add information and ambience

Re: [Elecraft] Power supply for KS

Wayne has said that 14.2V is desirable (as read on the display, so ~14.4V at the source AND the input connector at the radio).  This provides a more clean signal. It's also important to not allow voltage sag under load (for the same reasons). Just make sure that if the power supply causes

Re: [Elecraft] Power supply for KS

Hi Ken Thanks for the info. I am not in a rush yet. I noticed that the voltage is 13.4.. Maybe a little higher might be better. Not sure on the last point. I will check what else they make TU 73 Richard On Mon, Apr 20, 2020 at 12:51 PM Ken Winterling wrote: > Richard, > > I use an IOTA

Re: [Elecraft] Power supply for KS

Richard, I use an IOTA DLS-55 SMPS power supply ( https://www.iotaengineering.com/dls55.htm). It provides 55 amps, doesn’t produce RFI, is audibly quiet, and rugged. The dimensions are 9.7" x 6.7" x 3.4" and the weight is 5.0 lbs. Mine is on 24/7/365. IOTA also makes them in other output

[Elecraft] Power supply for KS

I need to get a new power supply for my upcoming K4 and accessories before my present 40 year old supply goes belly up. I want reliability and no fussing , fixing or modifying things. Any recommendations. I heard that some of the old brands are not what they used to be. Thanks, Richard wa6kyr

[Elecraft] Power supply

Hello all, Been a ham for a few years and  I would take a little transformer hum over the noisy switching power supply fans any-day. my 2 cents Thanks 73 Ken K5DNL Amateur Radio |K5DNL| 630M Amp for sale | Scopematch info | 630 Meter Power Amp | 630M station | Scopematch | 630M Remote tuner |

Re: [Elecraft] power supply for KX-3?

Noel, The Kx33 is a great power supply for the KX3 in QRP use. If you plan to add the PX3, they have a "Y" cable to allow you to power both from the same supply. OTOH if you want to also add the KXPA100, the Powerworks SS30DV supply is excellent. It is resold by Elecraft for your shopping

[Elecraft] power supply for kx-3

Thanks to Dave,K9FN, and Bill,KW4WZ for their infos...Very much appreciated. 73 Noel __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post:

Re: [Elecraft] power supply for KX-3?

Noel - I do not have a KX3, but a good buddy does and he uses this supply: https://proaudioeng.com/products/pae-kx33-low-rfi-ac-power-supply/ He has been VERY happy with it, and has never noticed any issues like those that sometimes occur with switching supplies. If you are sure you won't be

[Elecraft] power supply for KX-3?

Hello, I would like to know what power supply to use with the KX3?? I will be using the kx3 at home only.What about a switching  power supply? or a standard one?? I am not familiar with the kx3, so your comments would be appreciated. Thanks Noel

Re: [Elecraft] Power Supply in SP3

Neither place is a good choice if heat rise is considered. 73! Ken - K0PP On Jan 21, 2018 10:53, "Alan" wrote: On 01/21/2018 07:40 AM, hawley, charles j jr wrote: > K9JRI wonders if it wouldn't be an idea to put a K3 capable power supply > in the back of the speaker cabinet?

Re: [Elecraft] Power Supply in SP3

On 01/21/2018 07:40 AM, hawley, charles j jr wrote: K9JRI wonders if it wouldn't be an idea to put a K3 capable power supply in the back of the speaker cabinet? Seems like a good idea... It might mess up the acoustics. If you have a P3, that would be a good place for a power supply for the

[Elecraft] Power Supply in SP3

K9JRI wonders if it wouldn't be an idea to put a K3 capable power supply in the back of the speaker cabinet? Seems like a good idea... Chuck Hawley c-haw...@illinois.edu __ Elecraft mailing list Home:

Re: [Elecraft] Power Supply for K3s/10

Nick, I would think the PAE Kx33 supply would power the K3/10 nicely. You would have to change the power connector to APP. Now then, if you have any accessories connected to the K3 12 volt output, you may need more current than the Px33 can deliver. I normally recommend a 6 amp supply for

[Elecraft] Power Supply for K3s/10

I am looking for recommendation about what power supply can I use with K3s/10 (10 watt only). The rig does not have the KPA3 brick installed. This will be primarily a travelling rig and the weight + size is the reason I would like to have a small switching but RFI free power supply. I have SS30

Re: [Elecraft] Power supply voltage sag during transmit

I understand. My mention of a switching supply was simply to point out that smaller switching power supply solved my problem. I’m not arguing for a conclusion as to a defect in the K3. I’m simply sharing information. The same connection to my big supply using the Power Pole strip works fine

Re: [Elecraft] Power supply voltage sag during transmit

Jimmy, I did not make any reference to any switching supply. I have the same supply, sans meters. The meter on the power supply is reading internal to the supply. Check on the outside with your DMM. The terminals on that supply are bolts with the heads on the inside. Those bolt heads

Re: [Elecraft] Power SUpply

Hi Greg, We have hundreds of happy KX3s (and PX3s, etc...) being powered by our tiny Kx33 supply: https://proaudioeng.com/products/pae-kx33-low-rfi-ac-power-supply/ Let me know if you have any questions. Howie - WA4PSC __

[Elecraft] Power Supply

Hi Greg! I have the Pro Audio Engineering PAE Kx33 supply that's been running my KX3 and PX3 24/7 for several weeks. It exhibits barely detectable warmth and I've not noticed any "trash". If you get one and expect to run both the KX3 and the PX3, be sure to get the "splitter" addition for the

Re: [Elecraft] Power Supply

Elecraft sells the SS-30DV for $120. Powers the KX3 and amp. I power everything in my station with the SPS-30DM which is a voltage variable version with meter. Reliable, RFI quiet and fan quiet. Same case as the SS-30DV. Available from Powerwerx.com, one of my favorite vendors. A little more

Re: [Elecraft] Power Supply

I’ve been well satisfied with a Samlex SEC-1235M for the KX3 with a KXPA100 and various other 12v stuff. Switcher efficiency without QRN. 73, - Art KD6O __ Elecraft mailing list Home:

[Elecraft] Power Supply

What small sized power supply is recommended for use with the Elecraft KX3? __ 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

Re: [Elecraft] Power Supply for KX3?

*/The power supply I purchased for my bear foot KX3 the ls50-12 by Lambda its small was plugged in over a year until I got the KXpa-100. It measures 4" x 4" x 1 1/2 no-on off switch cost was very reasonable

Re: [Elecraft] Power Supply for KX3?

Hi Jock, For out-of-shack (hotel / office) operations, I use the following PSU Triad WSU150-2400 which is available from Digkey as p/n 237-1409-ND. $20 in unit quantities. I've found this unit to be reasonably RF-quiet, yet small enough to fit in the ammo box I use to transport the KX3.

Re: [Elecraft] Power Supply for KX3?

Thank you everyone for all the replies and good information. I've narrowed it down to either a Powerwerx supply, or the PAE-KX33. The PAE-KX33 looks great, but I'll probably go with the Powerwerx so that I have the option to power other, larger rigs. 73, Jock N1JI On Thu, Sep 10, 2015 at 10:22

[Elecraft] POWER SUPPLY FOR KX3

HI FELLAS, I THOUGHT I WOULD TOSS IN MY TWO CENTS ABOUT POWER SUPPLIES FOR THE KX3. IVE SEEN MANY GOOD RECOMMENDATIONS. I WOULD PERSONALLY RECOMMEND THE SAMLEX SEC- 1235 OR SEC-1235M. THIS IS A SWITCHING SUPPLY THAT I HAVE BEEN USING FOR SEVERAL YEARS WITH NO PROBLEMS AND BEST OF ALL NO NOISE

Re: [Elecraft] Power Supply for KX3?

I like mine. On 9/9/2015 1:40 PM, Ken G Kopp wrote: Here's another recommendation for the Pro Audio Engineering PSE-KX33. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help:

Re: [Elecraft] Power Supply for KX3?

To: elecraft@mailman.qth.net Subject: [Elecraft] Power Supply for KX3? Can anyone recommend a good, small power supply to use at home with my KX3? I've been using a TenTec 937 but it's moving to a new QTH soon. Thanks and 73, Jock N1JI

Re: [Elecraft] Power Supply for KX3?

I use an Pro Audio Engineering PSE-Kx33 for portable operation. I don't notice any noise, even in my RF quite New Hampshire QTH. 73 Bill AE6JV On 9/9/15 at 12:51 PM, jock.irv...@gmail.com (Jock Irvine) wrote: Can anyone recommend a good, small power supply to use at home with my KX3? I've

Re: [Elecraft] Power Supply for KX3?

: Wednesday, September 9, 2015 7:51 PM To: elecraft@mailman.qth.net Subject: [Elecraft] Power Supply for KX3? Can anyone recommend a good, small power supply to use at home with my KX3? I've been using a TenTec 937 but it's moving to a new QTH soon. Thanks and 73, Jock N1JI

[Elecraft] Power Supply for KX3?

Here's another recommendation for the Pro Audio Engineering PSE-KX33. 73 KEN - K0PP kengk...@gmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post:

Re: [Elecraft] Power Supply for KX3?

- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jock Irvine Sent: 09 September 2015 19:51 To: elecraft@mailman.qth.net Subject: [Elecraft] Power Supply for KX3? Can anyone recommend a good, small power supply to use at home with my KX3? I've been using a TenTec 937 but it's

Re: [Elecraft] Power Supply for KX3?

I use a BioennoPower BPP-120 pack full time, in the shack and portable. Its 10 Ah lithium battery supplies the KX3/PX3 with no RFI and powers the iPad at the same time. Handy form factor and light weight. I never use the inverter though. -- Marc W8SDG > On Sep 9, 2015, at 3:51 PM, Jock

[Elecraft] Power Supply for KX3?

Can anyone recommend a good, small power supply to use at home with my KX3? I've been using a TenTec 937 but it's moving to a new QTH soon. Thanks and 73, Jock N1JI __ Elecraft mailing list Home:

Re: [Elecraft] Power Supply for KX3?

Jock, I asked that very question of the Elecraft people a year ago when I built my KX3. PowerWerx was their recommendation. http://www.powerwerx.com/power-supplies/ I now have two — one powering my K3S (or KX3), and the other powering everything else,

[Elecraft] Power supply fan

I run my K3 from a Pyramid ps21kx power supply, a linear supply which has done a great job for a couple of years. But it has a fan, and when there is nothing going on in the shack, the fan is audible. So I got a temp control gadget on eBay for 15 bucks shipped from the U.S. I opened up the power

Re: [Elecraft] Power supply

The one I use is made by an outfit called Ktec rated 14v @ 4amps. Enough to run the rig at full output in keydown modes for as long as needed. Originally made for a CPAP machine I believe. I think I got it fron AllElectronics for around $20. Not a wall wart, has a 2 pin AC power cord jack. On Feb

Re: [Elecraft] Power supply

I don't have a Kx3 so I can't answer to whether this will work for that unit. But I do get (Elpac Power Systems FW5012 Adapter 12V) for other 12V radios. Its a linear regulated supply. No observable noise on receivers I power with it. Rated at 1.45 Amps Coaxial barrel connector, positive on

Re: [Elecraft] Power supply death K3 also any idea ?

Hi all, yes D28 was in short circuit... i leave it and now the radio it's working.. but without the Kpa100.. the same diode/zener on the Kpa100 module it's in short circuit also. Now i have to find where to but 2 of the D28 diode... thanks to all !!! 73 de IW0HK Andrea On Sun, Nov 10, 2013 at

[Elecraft] Power supply death K3 also any idea ?

Hi, today i was in QSO in 17 meter band CW when my power supply (switching from Nissei model MS 280A) has shut down (i was in tx with 100 watt). After i discover that the supply is death.. and also my K3 (#4777) now it's death also..connected to a battery it's not swithing ON... nothing... any

Re: [Elecraft] Power supply death K3 also any idea ?

Did you confirm cable and fuses are good? 73, Rick wa6nhc Tiny iPhone 5 keypad, typos are inevitable On Nov 10, 2013, at 9:17 AM, Andrea Borgnino a.borgn...@gmail.com wrote: Hi, today i was in QSO in 17 meter band CW when my power supply (switching from Nissei model MS 280A) has shut down

Re: [Elecraft] Power supply death K3 also any idea ?

All fuses good? Sent from my Verizon Wireless 4G LTE DROID Andrea Borgnino a.borgn...@gmail.com wrote: Hi, today i was in QSO in 17 meter band CW when my power supply (switching from Nissei model MS 280A) has shut down (i was in tx with 100 watt). After i discover that the supply is death..

Re: [Elecraft] Power supply death K3 also any idea ?

yes cable it's good, there was no fuse on cable from K3 to the supply. I just check the K3 with a battery and it's seem that the K3 it's in short circuit.. the battery voltage go to 12v to 0.5v when connected to the K3.. can be the fuse inside the K3 ?? On Sun, Nov 10, 2013 at 7:19 PM, Rick

Re: [Elecraft] Power supply death K3 also any idea ?

Perhaps before die, the 280A delivered an overvoltage output. That could explain both the death of the 280A and the short of the K3. Obviously, I hope to be wrong Massimo I0MCF Il 10/11/2013 20:06, Andrea Borgnino ha scritto: yes cable it's good, there was no fuse on cable from K3

[Elecraft] Power supply?

Don't think we need Elecraft to build us a power supply. It's a pretty low tech endeavor and the supply market is infinite. It makes the same sense as me going into the car biz! Bill N2WL __ Elecraft mailing list Home:

[Elecraft] Power supply for incoming KX3

I have a small desktop regulated power supply rated at 13.5 volts DC nominal, 3.0 amps max continuous, 5.0 amps max. Can I use this to run the KX3 while it's desktop? The max output will on the KX3 will be 5 watts QRP. Mike VE3WDM

Re: [Elecraft] Power supply for incoming KX3

that is exactly what i am doing and it will give you 12 watts or less if you want On 12-09-16 9:14 PM, Mike Weir wrote: I have a small desktop regulated power supply rated at 13.5 volts DC nominal, 3.0 amps max continuous, 5.0 amps max. Can I use this to run the KX3 while it's desktop?

Re: [Elecraft] Power supply for incoming KX3

The only concern is, if it is a switch-mode power supply, then it may generate some RF hash. Other than that, it should be fine. 73, Matt VK2ACL. On 17/09/2012, at 11:21 AM, Robert Galambos va3...@gmail.com wrote: that is exactly what i am doing and it will give you 12 watts or less if

Re: [Elecraft] Power supply for incoming KX3

Mike, Usually, I recommend a 6 amp power source for a transceiver that is rated for the range of 10 to 20 watts, your power supply will do fine at the 5 watt level. It even may do 10 watts with no problem, but I try to rate things conservatively. My politics may be liberal, but the

[Elecraft] Power supply and fuse recommendations for K2

Well, just got my pre built K2 and I'm looking for recommendations for external in line fuse as well as power supply. I recently fried my OHR rig and will not power up any of my rigs without the proper fuse again. I currently have an inline 1A fuse with PP connectors and a 2.4A power supply.

Re: [Elecraft] Power supply and fuse recommendations for K2

Hi Steve, If you have the battery installed in you K2 I'd recommend the AA Engineering (?) PS. It keeps the battery charged as well as powering the K2. I don't think it'll be big enough if you go to 100 watt amp, though. Don , W3FPR has a write up on on his site (or he used to anyway).

Re: [Elecraft] Power supply and fuse recommendations for K2

Steve, If it has the KPA100 installed, the cable (if built as instructed) has a 20 amp in-line fuse. The QRP K2 has an internal 5 amp resettable fuse, so it will protect itself. What you do need to protect just in case of accidents is the power cable itself. I would suggest a 10 amp fuse. 73,

Re: [Elecraft] Power supply and fuse recommendations for K2

That Smartcharger article is on my website www.w3fpr.com. Steve, Looking at the end of your post, I see that you currently have a 1 amp fuse which is too small. Your 2.4 amp power supply is OK if you are limiting power to 5 watts, but if you want to run 10 to 12 watts (how about SSB on peaks)

Re: [Elecraft] power supply for KX3 and KXPA100

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[Elecraft] power supply for KX3 and KXPA100

Hi next year, when i operate my new KX3 and KXPA100 from my home, what power supply will i need? 115VAC to +13.8VDC ? 115VAC to +12VDC ? 115VAC to +12VDC and +5VDC ? other? many thanks, and 73, dave, W1TM

Re: [Elecraft] power supply for KX3 and KXPA100

Dave, Use the 13.8 volt supply. That is close to the typical voltage for a vehicle battery while being charged by the alternator. Most amateur gear is designed for that voltage - and we often refer to it as a 12 volt supply even though it is really 13.8 volts - like we refer to a 12 volt (6

[Elecraft] Power Supply?

I sure Elecraft can answer this better. I would make a guess that power supplies in much equipment is bought from a vendor and installed as a module; the vendor having taken care of all necessary certifications. Perhaps in high volume production the PS is ordered to the manufacturers spec

Re: [Elecraft] Power Supply?

All, Please be advised that Astron supplies are generally over rated. The RS-20 is rated at 20A peak and 16A continuous. It is more like 12 -14 continuous. I have seen people try to use them at their continuous ratings, only to have them fail. The heat sinking is just not there. Be

Re: [Elecraft] Power Supply?

I have an RS-20 but use an RS-35M dedicated to my K3. I have it and my SteppIR controller plugged into an APC 700VA UPS (from http://www.refurbups.com/ ) to prevent loss of AC power from adversely affecting the radio. I leave both the UPS and RS-35M on and turn off the K3 with the front panel

Re: [Elecraft] Power Supply?

AC0H Someone thinks they're going to shoehorn the guts of an RS-20M into a P3? Good luck! I don't think the transformer would fit much less the heat sink. Have a look inside one then. The transformer is 3.75 inches tall, by 4.0 by 4.5. The PCB with caps, etc. is 2 tall, by 3.75 by 3 by 3.75.

Re: [Elecraft] Power Supply?

Jim, I use my own custom UPS... and Astron SS30M with a Powergate PG40S tied to a Marine GSM battery at 200 amp. I can lose power for quite a while and still operate. I think this is less costly than a dedicated UPS to handle the full load for even a short period. I do have an APS UPS for the

Re: [Elecraft] Power Supply?

Another example of reading the manual or in this case the info sheet. I have run Basecom20 for a 50w VHF-FM radio for up to ten years onboard 200-foot oil field work boats. I did have one croak but that might have been due to the highly regulated (joke) ships generator: 115vac +/- 50vac! Ten

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