Re: [Elecraft] KPA500 RF output wiring

2011-09-08 Thread Don Wilhelm
Johnny, Twisted pair is just as effective as coax, and easier to work with. I am not certain that was the reason for that design, but there is no problem with it. 73, Don W3FPR On 9/8/2011 1:53 AM, Johnny Siu wrote: > Hello Group, > > The connection between the RF deck to the RF SO239 outp

Re: [Elecraft] KPA500 RF output wiring

2011-09-08 Thread Jim Brown
On 9/7/2011 10:53 PM, Johnny Siu wrote: > The connection between the RF deck to the RF SO239 output is a pair of > twisted wires instead of a coaxial jumper. Is there any reason for such a > design? Sure. Twisted pair is a VERY effective transmission line, and that is what is needed. In fact,

Re: [Elecraft] KPA500 RF output wiring

2011-09-08 Thread Fred Jensen
> On 9/7/2011 10:53 PM, Johnny Siu wrote: >> The connection between the RF deck to the RF SO239 output is a pair >> of twisted wires instead of a coaxial jumper. Is there any reason >> for such a design? Twisted pair is a highly effective transmission line, and easier to work with than coax

Re: [Elecraft] KPA500 RF output wiring

2011-09-10 Thread Gary Hinson
> Sure. Twisted pair is a VERY effective transmission line, and that is > what is needed ... Hey Jim, what kind of twisted pair could I use to feed my [mostly 50 ohm] HF antennas? Coax is expensive in ZL so I'm willing to try alternatives. I'm even thinking of homebrew balanced line with baluns

Re: [Elecraft] KPA500 RF output wiring

2011-09-10 Thread Jim Brown
On 9/10/2011 11:05 PM, Gary Hinson wrote: >> Sure. Twisted pair is a VERY effective transmission line, and that is >> what is needed ... > Hey Jim, what kind of twisted pair could I use to feed my [mostly 50 ohm] HF > antennas? Coax is expensive in ZL so I'm willing to try alternatives. I'm > eve