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For the initial radio, impedance matching won't be critical at all since it's only for receive. Since you don't have a radio that transmits (unless you have an impedance analyzer), you probably won't be able to closely match it anyway, so just us a calculated length.
What you can put up depends on where in the house it will go. I would suggest a 40M dipole fed with coax, starting with 33" on each leg. If it's going in the attic, just stretch it out as straight as you can. If it's going in a room, I would put it at the juction of the walls and ceiling. It won't matter much if you have to wrap the ends around the corners of the room.
Later when you have an analyzer, or a transmitting rig and SWR meter, you can trim the antenna for best SWR in the band portion of interest. Performance may not be the greatest, as any indoor antenna is a compromise. But any antenna is better than no antenna.
73,
Don, K2DC
What you can put up depends on where in the house it will go. I would suggest a 40M dipole fed with coax, starting with 33" on each leg. If it's going in the attic, just stretch it out as straight as you can. If it's going in a room, I would put it at the juction of the walls and ceiling. It won't matter much if you have to wrap the ends around the corners of the room.
Later when you have an analyzer, or a transmitting rig and SWR meter, you can trim the antenna for best SWR in the band portion of interest. Performance may not be the greatest, as any indoor antenna is a compromise. But any antenna is better than no antenna.
73,
Don, K2DC
That's going to be an awfully short 40m dipole, Don. Or did you mean 33' on each leg?
