The simplest way to run two receivers from one feed is with a tee and
two 1/4 wave pieces of 75 ohm coax (or any odd multiple thereof) to each
receiver. Many of the Motorola and GE dual receiver mobiles use just that
scheme to do it. Of course you get 3 db loss this way but if you have a
preamp upstream you probably have too much gain anyhow. Have used this many
times with two receivers and it works fine. This assumes that the two
receivers are fairly close in frequency.
Any more than two and it gets sticky. Minicircuits and others build
splitters with 20 db or more isolation between ports. This isolation can be
very important when using receivers with the same I. F. and the local
oscillator of one receiver can get back into the other receiver.
Al, K9SI
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