[Elecraft] Silent power supply for a K3s

[Bob McGraw K4TAX]

I've found a good source for power supply wire for the DC connections.   
Automotive primary wire, #10  AWG.  This wire is made using many small 
strands which make it very flexible. Various colors are available.   I 
use Red {DC Pos}, Black {DC Neg}  and White {equipment bonding wire}.   
Also I use the proper size for the wire and screw ring terminals {no 
spade or Y lugs} fitted on each end.

I'm and old fashion fellow and and was taught to crimp with the correct 
crimping tool.  I've seen too many hams use the "mash-on" method, thus 
using what ever tool happens to be in the tool box.    A proper crimping 
tool is designed for the specific connector and sleeve size and does not 
distort the sleeve.   Yea, a good crimping tool may cost you $25 to $35 
but it is sure worth it not having to worry about lousy connections.

As a test, crimp a lug on a piece of wire.  Using pliers, try to pull it 
off.  If you can, it may be the wrong size lug for the wire OR  it is 
not properly crimped.   If the wire breaks first, you have a good crimp.

73

Bob, K4TAX


On 6/12/2019 8:17 AM, Harry Yingst via Elecraft wrote:
>   Another vote for the Astron Power Supplies they work well.
>
> Use the shortest run between the PS and radio you can and of a heavy gauge wire.
>
>
>
>      On Tuesday, June 11, 2019, 6:15:14 PM EDT, Bob Nielsen - N7XY <n7xy at n7xy.net> wrote:
>   
>   The Astrons are quiet and pretty reliable.  I have had a RS20 since 1980
> and the only problem I had was cured by replacing the regulator chip
> about 35 years ago.
>
> Bob, N7XY
>
> On 6/10/19 5:04 PM, Alan Corbeth wrote:
>> I have an Astron RS35 power Supply purchased in 1991.  There was a period where I didn’t use it for ten years.  Now it’s in use daily and so far it continues to be totally quiet.
>>
>> Alan
>> K7FH
>>
>>> On Jun 10, 2019, at 3:56 AM, Bill <w2blc at nycap.rr.com> wrote:
>>>
>>> I have several Power Werx switchers and prefer them for their size over the heavy analog supplies. Fans are not a problem (actually, I hear nothing from them at all) - IF you design your radio desk for proper equipment placement. Place the power supply at your right hand - and you WILL hear noise, XFMR, fan, etc.
>>>
>>> It is amazing what proper station design/construction can do for making silence. Open faced metal shelving and bare desktops don't cut it.
>>>
>>> Just for grins, I put one of those Nanoxia fans in my IC-7300 and silenced it completely. Worth the few dollars and effort. No temperature changes noted. Hmmm - KPA500?????
>>>
>>>
>>> ______________________________________________________________
>>> Elecraft mailing list
>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>>> Help: http://mailman.qth.net/mmfaq.htm
>>> Post: mailto:Elecraft at mailman.qth.net
>>>
>>> This list hosted by: http://www.qsl.net
>>> Please help support this email list: http://www.qsl.net/donate.html
>>> Message delivered to acorbeth at gmail.com
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Elecraft at mailman.qth.net
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to n7xy at n7xy.net
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to hlyingst at yahoo.com
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to rmcgraw at blomand.net