"Wolfgang K. Meister" wrote in message
...
On Wed, 04 Feb 2004 01:35:59 GMT, " Stephen Cowell"
wrote:

You need a termination resistor... you can make one
by soldering a resistor inside a PL-259, or you can
buy one (they are available for 50ohms as BNC format).

Steve - my setup was:

- Vectronics SWR Bridge
- the Balun (Unun) connected to the PL connector with very short wires
- other side of Balun (Unun) terminated with a 50 ohm or 450 ohm
resistor.

The wires on the Balun, on each side, are around 1,5 inch long.

Is this a solution: (?)

a.) connecting a 50 ohm resistor with wires, approx. length of the
total wire length of the Balun, to the Vectronics
total wire length: same as wires on each side of the balun ;-)
b.) note the SWR over the range
c.) connect the Balun with the termination resistor
d.) calculate the difference ?

I don't think you'll get far with that... it could be
+ or - reactance and still have the same SWR.
What construction are you using for the transformers?
Are they toroidal? This is best, since they are
self-shielding... you have to watch what's in the
near-field of unshielded stuff.
__
Steve
KI5YG/EA
..