Half duplex RF tranceiver by using LINX RF modules

I have got RF modules ,TXM-418-LR(transmitter) and RXM-418-LR(receiver) and the antenna ANT-418-PW-RA.

Now i want to make a half duplex tranceiver by using these RF modules.For that i can understand that i will need a SPDT RF switch to connect a single antenna to the transmitter and receiver module.
But for some reasons i cant go for above solution.Now if i will place the transmitter and receiver modules side by side then i can manage to get a very small distance (around 8mm) between the antenna feed pins of both modules.Now if i connect both antenna feed pins through a tab very near to the modules on the PCB and connect a single antenna to that tab and then control my transmitter and receiver through a microcontroller using the power down pins of modules such that only one of them remain active at a time
Will this thing work properly as a Half duplex tranceiver?

Dtasheets can be consulted for reference at following links:



http://www.linxtechnologies.com/imag...rxm_manual.pdf
http://www.linxtechnologies.com/imag...txm_manual.pdf
http://www.linxtechnologies.com/inde...ries=ra_series


Thanking in anticipation

you don't need to use a switch to connect a single antenna ..You could also do it
with a diplexer .. But the diplexer has to be designed for that frequency ..
a lot of manufacturers of RC tranceivers usually give you an example .So probably you could look on similars ICs and use one of theirs .
I va used MELEXIS trasnceivers in the past and used their diplexer..

i cant get your point.As i am very new to RF field i dont know what is a diplexer?

can you please tell me what is it?How to design one for a frequecy of 418MHz?
what kind of components are required for it?

Please give me some links if you can

Thanks