RF Frequency Seperation Question- OT

[PhaseShifter]

You can also venture down the DIY route by using products from these folks http://www.minicircuits.com/

[RBIngraham]

Ask your Sennheiser reseller about DIRKIT4 or DIRKIT8. It's a kit that includes paddles and splitters for cheaper than buying it all separately, usually.

Also keep in mind that "RF is RF" so any brand antennas and splitters that's specified for the frequency range you're using should work fine (and Sennheiser is typically quite expensive for those accessories). That said, I really dig the power distribution feature of their antenna splitters so I use them.

Be careful and always read up before you buy stuff. Some brands provide power to their shark fins and paddles, so you don't want to plug in something that is looking for diferent voltages, samething on antenae distros, some units will power recievers with phantom like power over the coax, so if your reciver doesn't like that, you could damage gear.

If you are not going to use the specific gear, I would second the roll your own route with mini circuits gear.

[Brent Evans]

Found these DIY Log Periodic antennas on Ebay. According to an engineer who used to work for Sennheiser during the design phase of the Evolution series, they should work quite well and are very similar to what Sennheiser sells as a finished package. They should feed 8 receivers passively (through BNC T splitters) as long as the coax cables connecting them don't exceed 75' or so. All they need is a bit of hardware and finish work, and for $25 it was a no brainer. I ordered a pair, they're here, and a very well made product (all it is is a PC board, but still). I plan on encasing them in something like ABS or Lexan, with the appropriate bits to mount on a mic stand.