[Amps] Pi-L Check

wc6w@juno.com wc6w at juno.com
Wed Feb 16 22:40:24 EST 2005


Good evening to the group,

 I've cobbled together a Quick Basic Pi-L program that calculates the coils at the nominal output impedance (52 ohms) and at the high end of the wider bands.

 It then recalculates the C's, the effective Q and the midpoint Z at higher (100 ohm) and lower (25 ohm) load impedances and at the band edges to allow for real world margins.  The L's remain fixed during this second pass.

 Unfortunately, I "lost" my older "standard" version Pi-L program in a Gatesian event a couple years back.  

 Does anyone have a (modern verison) Pi-L program handy who could provide some check L & C values?

 A single point should suffice... say:
     2000 ohm input
     300 ohm mid-point
     52 ohm output
     at 4 MHz  
     Q = 10

73 & Thanks!
  Marv WC6W













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