One antenna with two radios

Alan,

Doubt if this idea would work, as you would be transmitting straight into the 2nd UHF, Alan. You could put a co-ax switch in between them, but then you wouldn't be able to utilise one of the radios, at same time.

If you bought a GME or Icom, set it to Group Scan, then you would be able to scan, hear all signals(within range) and still use your Priority channel.

If you still wanted to use both radios, get the biggest/best aerial for new set, and a smaller one for the old scan UHF.

Hooroo,
Bob.

It is possible Alan with a device called a directional coupler which allows one to transmit without the power going into the other UHF and blowing up its front end.

Tend to be a bit costly although it can be done somewhat inefficently(because of the wrong impedances) with cheap little couplers designed for cable TV use.

But really it isn't worth the trouble.

Its simpler to just use a short bit of coax on the unit used for scanning and strip 6 inches of the outer braid of the coax end , leaving 6 inches to act as an aerial and just taping this to a pillar or somewhere.
The fact that the scanner will not have as good an aerial isn't very important when not being used for transmitting.


We often run 3 UHF's at once from the car and have long since moved over to using mid range handhelds like the UH065sx and similar. WE have 3 mobile phone holders in the car and just sit these in them.
Its a very practical arrangement.

As the others have said - transmitting into the receiver of the other set is not a good thing. A lot depends on the lengths of your joining cables how much output power and received signal strength you will use.

Any coupling equipment that you can purchase will loose you half your signal at least and cost megga bucks - you are talking about commercial base station or laboratory equipment. Two antennas will be much easier, will not cause any signal loss and cost far less.

As said earlier install a set that features a priority channel. You set the priority channel to your working channel. When you set your scanning going the receiver will check your priority channel every couple of seconds to see if there is someone calling you. No need for a second set unless you want both to scan different suits of channels.

PeterD