Expected range gain from video tx upgrade?

Horty

Member
I am currently running the FatShark 25mw 5.8ghz tx (http://www.getfpv.com/fatshark-5-8ghz-cased-fcc-a-v-transmitter.html) with the built in 5.8ghz rx in the FatShark Attitude V2 goggles. Both are running spironet circular polarized antennas.

What kind of range can I expect to gain over my current setup if I upgrade to the tx to the Immersion RC 600mw 5.8mhz tx (http://www.getfpv.com/5-8ghz-600mw-video-tx.html) with a IB Crazy Blue Beam circular polarized antenna (http://www.getfpv.com/ibcrazy-5-8-ghz-airscrew-cloverleaf-ultra-antenna.html)?

Since I know 5.8ghz is limited in its penetration lets assume that we are talking about unobstructed range.

Also, as for upgrading tx, what is the difference between these? They are all 600mw 5.8 ghz transmitters at the same price point. Is one the clear best choice or does it really matter?

Immersion RC 600mw 5.8 ghz tx - http://www.getfpv.com/5-8ghz-600mw-video-tx.html
Immersion RC 600mw 5.8 ghz tx with raceband - http://www.getfpv.com/immersionrc-raceband-5-8ghz-600mw-a-v-transmitter.html
Lumineer 600mw 5.8 ghz tx with raceband - http://www.getfpv.com/lumenier-tx5g6-mini-600mw-5-8ghz-32ch-fpv-transmitter.html
Lumineer 600mw 5.8 ghz tx with raceband - http://www.getfpv.com/lumenier-tx5g6r-mini-600mw-5-8ghz-fpv-transmitter-with-raceband.html

Finally, what is the best antenna to put on one of these 5.8ghz 600mw transmitters? I was thinking the IB Crazy Blue Beam circular polarized antenna (http://www.getfpv.com/ibcrazy-5-8-ghz-airscrew-cloverleaf-ultra-antenna.html) only because it is the one that I have heard the most about.