- I would like to extend the supplied BNC antennas for about 5x Shure SLX-D dual channel receiver units.
- I want to mount the antennas on a small metal plate on a wall, keeping the same spacing as the receiver.
Would RG8X coax be fine in terms of loss over around 25ft per antenna?
Due to cost reasons, the Shure distributed antenna system is not an option.
Comments
I know this is old, but its…
I know this is old, but its a common question. Running 10 separate antenna cables is a sort of solution, but hardly elegant.
The snag is that the actual antenna design with little short antennas attached to the receivers is pretty poor to start with. The reason it doesnt work dreadfully is simply signal strength. The distances the RF has to travel is usually very short, and those 100m range claims are actually doable outside with the antennas and the power. The problem is that most spaces are not outside, and the killer is dead spots, where things combine, reflect and create those RF sucking holes. Where signal strength is full on the meter, but one step to the left makes it totally vanish. Using distant antennas, higher up often reduces these, especially if the two antennas each receiver has are in diffferent locations. The dead spots for one antenna will be in diffrent places. So, feeder loss with your 25ft of cable isnt that much of a problem, and putting two wall panels in diffrent places could be quite workable. A distro really just reduces the antenna count, not much else. It also means just 5 cables to each of the two locations. You can buy cheap distros on aliexpress and theyre actually OK, ive had one as a backup and it is actually in use permanently in a venue with a couple of paddle antennas.
Spacing make diversity systems so much better and losing a bit of signal is not that dodgy. In fact, using wrong impedance cable is accidentally common and rarely matters that much on receive. Satellite cable has very low loss, and if you can sort the connectors, works OK.