A high pitched whine? Thats Zaxnet getting into your radio mics. Turn the power down on your Zaxnet TX and/or move the antenna away from your other radio mics.
Good bang for your buck, especially if you go for the 32mhz option. Not great with intermod in larger setups. Sound quality seemed very good from what I've heard.
Comparing them to wisycom is pointless, wisy win every time but cost a fair bit more.
But just try asking for a discount :-)
I LOVE telling production - after they moan about additional rental costs, to go get a comparative quote off RFS.
No. You can't do that. But you COULD help influence a small niche manufacturer to produce a specific product by demonstrating demand for said product.
Is there anything in the above that you don't understand? I'm happy to put it in simpler terms if you require?