RF Transmitter/Reciver

[skimask]

My solution will be to pull down PDN line when i don´t want to transmitt and pull it high when i want to transmitt or just drive the hole modul from an +5v high PIN on the PIC that is active when i want to transmitt and then pull it low.

Transmitter supply current is 5.2 mA so a pin from the 16F628A that have 20mA is enought.

Then i can use True mode whitout have an RF carrier when i don´t send.

The maximun output power for the transmitter is 14DBm or 25.11mW
Is that correct?

http://www.linxtechnologies.com/Docu...Data_Guide.pdf

The datasheet that you just posted...page 2, lower left corner, ABSOLUTE MAXIMUM RATINGS...might have something to do with something...

[Fredrick]

The datasheet that you just posted...page 2, lower left corner, ABSOLUTE MAXIMUM RATINGS...might have something to do with something...

There is an voltage regulator circut on the parrallax bord allowing it to be driven and controlled from a 5V source, so i´m not extend the maximum.

[Archangel]

Hi Fredrick,
Ha, Skimask was thinking the same thing I was, overdriving the transmitter chip, but I guess that is not it, so . . . I would make sure the transmitter is away from the power supply a bit, and make sure to tie the grounds together all in the same place, it will help if you can tie to an earth ground. One question, are you still using serin and serout? I ask only because HERSERIN and HERSEROUT will only work in TRUE mode and not INVERTED.
HTH
JS