Quote:
A "UVSJ" or combiner as it were, is nothing more than
a splitter used in reverse
|
Your understanding is incomplete.
A UVSJ is NOT a simple broadband splitter such as is usually used for connecting multiple sets, it is a
FREQUENCY-SELECTIVE splitter/joiner (it's a reciprocal device, it may be used for either function). The VHF port only admits VHF frequencies and rejects UHF frequencies while the UHF port does exactly the opposite. The two cleaned-up frequency bands are then combined with minimal loss, usually under a dB or so, worst case.
In the attached image which is a measurement of one of our U/V combiners I did a while back, the yellow trace is the through insertion loss measurement of the VHF input to the output, the magenta (pink) trace is of the UHF input to the output. As can be seen the opposite set of frequencies is attenuated by > 30 dB for both ports.
The UVSJ device has been used successfully for decades for the express purpose of combining separate UHF and VHF antennas. No need to go backwards in time and end up with an inconvenient outcome for your customers.
There's a way better way than how you've been doing it.