Hi All,
I was wondering if there was a similar unit for VHF?
I saw that Shure makes the UA860V, but it’s a bit different and more unsightly than RFVenue’s offering.
I have a friend doing interview-style video broadcasts, and the LED panel lights are apparently spewing RF hash. I recommended blackwrap on the backside of the panels and placing the panel in the null of the LPDA, but thought there might be other options.
You can place those LPDA's flat on the floor (as long as it's not made of conductive metal), located within a few feet of the TX and pointing toward the talent. The closer the better, such as directly beneath them on the set. They even work well under carpet or beneath wooden set risers.
This achieves minimum distance to the desired source of signal and maximum distance to the source of noise, which allows the inverse square law of free space loss to work in your favor to improve CNR.
This is exactly the same application and philosophy of the RF Spotlight that is designed as a low-gain antenna, but substituting a high-gain antenna in a way that makes it perform as a low-gain device.
Violation of near-field obstruction best practices and its associated antenna detuning in this case is desirable to reduce the overall gain of the system as appropriate for such a close range of operation. VHF has very low loss in dB per foot through properly spec'd coax, so its length in that small room will likely be negligible. You may even wish to insert more attenuation as Ike suggested.
If this configuration doesn't work perfectly in the scenario that you've described, there may be other problems happening in addition to noisy lighting fixtures and a deeper dive into your components and procedures is necessary.