You already have the maximum number of FreePORT systems you can - you cannot add anything
in channel 70.
Channels 60-69 are part of the sell-off for G4 mobile
This is very likely to seriously interfere with the Ch.70
licence-free frequencies that FreePORT are on.
My advise would be to get rid
oof the FreePORTs and get a new 8-channnel system on new frequencies.
best option for a school is to get a system on fixed site co-ordinated frequencies on
channel 39, 40 or 41. This will keep you clear of the Ch.38 frequencies that all the
mobile stuff will use. Only get Ch.38 frequencies if you plan to use the system in
Talk to JFMG
to find out what frequencies you can licence on a
co-ordinated basis at your site.
If you want to keep the price down, you
could look at the new Sennheiser XS Series
- this is very affordable and about half the price of
evolution G3 and, I think, available for less than £300 a set.
For best results you really should use a single pair of
antennas and antenna splitters.
I hope this helps.
John - Sound-Link ProAudio
President - Federation Internationale des Chasseurs de Sons