[AMPS] Copper tube - semi-rigid

[MM@plextek.co.uk (Mark Marsden)]

Can anyone please help me find copper tube for a pi-tank 
coil for a 160 thru 10m 4CX1000A amp?

8mm O.D. is easily obtained but I need 4 or 5mm
OD, and a continuous piece about 5m (16ft) long.


Alternatively I'm considering winding a coil out of
Quickform 141, a semi-rigid cable similar to RG402,
it's available in 5m lengths - which RG402 isn't.

I plan to feed B+ though the inner core (from the 50 Ohm
end, to simplify the RFC requirements) using coax or 
feeding a silicone rubber sleeved wire through tubing

Any comments?

Mark, G4AXX, M4R Granta Contest Group
                                                                        
                                                                        
                                                                        
                                                                        
                                                                        
                                                                        
                                                                        
                                                                        
                                                                        
                                                                        
                                                                        
                                                                        
                                                                        
                                                                        
                                                                        
                                                                        
                                                                        
                                  

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