Any Pi-network final should match it fine. The SWR is only 1.5:1 with a 75 ohm-50ohm coax mismatch. In fact using 75 ohm coax for a dipole is correct. The pi-net in the rig will easily handle that. A solid state rig can also handle the mismatch without a problem.
You'll need an "unun" that goes from 75 to 50 ohms. The problem is that transformationis so small that I've never heard of one being commercially available,(try Radio Works, http://www.radioworks.com/ ), they might have one, but I doubt it. You don't need one anyway, as the transformation is too small to worry about. Ed, VA3ES -------------------------------------------------------- Pieter Gerlach wrote: As an added favour could anyone tell me what sort of toroidal core i would need to transform 75 to 50 0hms. I was given a large quantity of CATV hard-line and read that it would be well to match the impedance to the antenna and the transmitter. Or do you think the Pi-network in the P.A. would be able to match the 75 ohm? I would at leat like to know which cores from Amidon would be the right ones in case i just want to construct a few transformers for experience sake. Thanks so much for any help you can give me. ______________________________________________________________ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
