Stuff the terms of service.
Just make sure that the HDU is passive return ideally, or at very least has a return band of 5-65MHz with a forward band of 85MHz-1000MHz.
Something like this:
http://www.soontai.com/DA10.html
DA10 - 65/8510 5 - 65 MHz by-pass 85 - 1000 MHz 10 dB
Those kinda specs would be ideal.