The existing pair of Explora decoders are connected with a local HB cable connected to the RF ports?
So, what you will have to do is install a diplexer behind the Primary Explora to inject HB onto the SLNB cabling so that the other HD 5 decoder can receive HB via the SLNB. That avoids the need for extending the HB connection via another cable.
It may not work however because there are reports that the Explora 1 is not really able to provide sufficient HB signal strength via an SLNB.
The HD decoder must be connected to a unicable port as well, NOT to a universal port on the SLNB.
Octo LNB; 2 by 2x4 MS; 2 by ES 5-2; Dedicated PSU for LNB, ES's, MS's; HD PVR 4P x 2; Explora 1; DSD 660; FSM
I do have 2 x Dstv explora 1s in my lounge and 1 HD 5 in another room with a smart LNB.
2 csbles come from the smart LNB to the 2 exploras and one from smart LNB to other room on the HD 5.
How and ehere wil I connect a duplexir?
There are no way for extra cables in my wall.
It's a partially oddly labelled diplexer due to poor tech English from the Chinese source.
(EDIT: If the Aerial King label is attached its English words are correct and standard, as detailed below.)
Here's the correct usage from Aerial King for normal and reverse (when RF-cabling HB (HeartBeat) distribution needs to be created) diplexer use;
ANT (S1) - connects to the RF In or Out port (depending on user's needs)
I/O (PX) - connects to the LNB's cable coming from the dish
SAT (S2) - connects to the LNB input port
ANT (S1) - connects to the RF coaxial cable you will be routing
I/O (PX) - connects to the LNB input port
SAT (S2) - connects to the LNB's cable coming from the dish
Photo attached for those able to view it properly.
If you have problems call C.J. at Aerial King: 082 558 8797