[Elecraft] PSU cable (was Astron psu..)

[CUTTER DAVID]

I have used twisted thick wires to encourage magnetic cancelling as recommended by Jim Brown.  The twisting also makes the cable easier to manipulate.  I used 2 cores rescued from scrap household cable.

David

G3UNA 

> 
>     On 11 April 2018 at 17:02 "john at kk9a.com" <john at kk9a.com> wrote:
> 
>     My 70amp Astron has 1/4" lugs and they seem to make a secure connection.
>     Do to my longer lead length (power supply on floor) I used 8ga wire. This
>     was difficult to stuff into the K3S sized PowerPole. Even with the shorter
>     leads that I use on contest expeditions along with a switching power
>     supply I found that I need 10ga wire to keep the voltage above 13.5 on TX.
>     I think that larger PowerPoles or studs would have been nicer for those
>     interested in keeping the K3S voltage in the desirable range. Double as
>     Joe suggested would also work if you wanted to run two sets of wires.
> 
>     John KK9A
> 
>     Joe Subich, W4TV wrote:
> 
>     Ohms Law! If the transceiver power supply cable is short and heavy
>     guage with multiple contact pins (or #10 - 1/4" bolted terminals)
>     and #10 or 14" bolted terminals on the power supply, the impedance
>     of the desired path in the power supply cable will be much, much
>     less than the path through control cables (#16-#22 wires with
>     single small pins) and any accessories.
> 
>     Elecraft/Astron come close with their power supply connection. I
>     would appreciate it if the transceiver had bolted connections or
>     at least double up the power poles and move from #12 to #10 cable.
>     Doubling up on the power poles would allow using two (#12) cables
>     further reducing the impedance (and voltage drop) of the desired
>     path.
> 
>     73,
> 
>     ... Joe, W4TV
> 
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