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
<n...@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 <w2...@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?????
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