Based on this argument, why is the commercial 450-460 band not inverted from the commercial 460-470 band? The same logic would apply.
If ham repeaters were LIHO, the mixing between two systems would be much worse. For example, you could not have a 443/8.500 MHz repeater co-site with a 458/3.500 MHz repeater. The TXs would each mix to end up on the other's input frequency. Keeping everything HILO gives you much more margin (attenuation/spectrum/filtering) to work with. There is also the additional problem that some commercial equipment is much harder to get to RX in the low end of 440-450. It's generally easier to move a TX farther out of band than a RX. HILO also keeps the user RXs (with much more poor selectivity) from overloading due to the adjacent commercial TXs. With HILO, they are all at least 5 MHz away. Joe M. k7pfj wrote: > > Here in Oregon we are Low out and high in. Well thats nice but when > you are offered to combine into a site combining system things have > to be done to accomidate the low freqs. It we were all low in and > high out it would, one help all of us in the since you would get your > recievers away from the 450 stuff and keep the trasmitters all > together. You would most likley notice that your repeaters would > recieve better.
