Greetings to all here on the forum. I must say I really like the projects that are being done here. I was looking at the 600mW brown bag kit from Black Widow and I had a question about it. It looks like the transmitter antenna is a standard whip antenna (or possibly a helical, I don't know offhand what the internal structure of the antenna is), but it appears to transmit with a horizontal/vertical polarization (depending on which way it's oriented). What I'm wondering is how much more effective the 8dB circularly polarized patch antenna is going to be compared to a standard whip on the reciever. From my undersanding, a polarization mismatch results in about a 3dB loss in signal. So am I correct in assuming that you really get an effective 5dB of gain out of the antenna (compared to 3 db for a standard whip antenna)? It would seem to me that this loss would me mitigated if I got the 14dB linearly polarized antenna instead, since there is no polarization mismatch, there will be no loss (due to polarization).
Am I totally wrong (chances are high that I am :-P )?