![]() ![]() The increase in SWR caused by transmitting at the same time is definitely a problem, i would just check with an SWR meter to see if it changes when you key up the other transmitter. If you are transmitting on both radios at the same time, damage caused by an increase in SWR caused by close proximity of the other transmitter.ĭefinitely, if you go with different bands for each transceiver and use 2 m for one and 70 cm for the other, then the possibility of interference and damage is much reduced.Īlso, the less output power, the less possibility of interference and damage.ĭue to the factors involved, it's hard to say how far apart the antennas should be.Īs a very generic guess, i would say that you should keep the antennas at least a few wavelengths away from each other, and not pointed towards each other, so let's say minimum 4 - 6 m apart, and note that it seems most modern radios have protection on the receiver input so damage is not likely, though you may want to check this. ![]() Damaging the receivers due to excessive signal amplitude from the other radio when it's transmitting.Interference to operation of each radio from the other.Exactly which directions the antennas are pointing.Out of band rejection specs for the receivers.Maximum allowable input signal for the receivers before damage will occur.The answer to your questions depends on a number of things.
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