07-09-2017, 06:26 PM
A minimum loss of 4dB?
A 5 - 865MHz two-way splitter usually has a loss of only 3.7dB* so what on earth are they doing?
Increasing the upper limit to 1750MHz ups the stakes somewhat but it is, after all, a simple switch.
I will probably come across a couple of CATV two-way switches in the next couple of weeks (final clearance of old house) - there are two types, one is rotary with a large lever protruding from the front and the other type is like yours with press buttons on the top.
If I find them, I'll take them back to Hykeham and see what I can find out about them, though finding a suitable signal source may be a problem.
* It is becoming increasingly difficult to find 860MHz splitters these day because every one seems to want to sell the 2.4GHz type. Beware! Some of these have horrendous losses which make a complete mess of a simple distribution system.
If you are pushed, the PROview splitters sold by Toolstation aren't toobad but you will still take a 1dB hit on any splitter.
The full range of PROview splitters with a full specification, including an 862MHz range, can be found on pages 41 & 42 of Blake UK's pdf catalogue but I'm not impressed. Decent splitters should have maximum losses of 4dB (2-way), 8dB (4-way) and 11dB (8-way) that these splitters fail to meet.
Taylor Bros still sell 860MHz versions but, unlike Toolstation, you can't just pop round to your local branch for them.
A 5 - 865MHz two-way splitter usually has a loss of only 3.7dB* so what on earth are they doing?
Increasing the upper limit to 1750MHz ups the stakes somewhat but it is, after all, a simple switch.
I will probably come across a couple of CATV two-way switches in the next couple of weeks (final clearance of old house) - there are two types, one is rotary with a large lever protruding from the front and the other type is like yours with press buttons on the top.
If I find them, I'll take them back to Hykeham and see what I can find out about them, though finding a suitable signal source may be a problem.
* It is becoming increasingly difficult to find 860MHz splitters these day because every one seems to want to sell the 2.4GHz type. Beware! Some of these have horrendous losses which make a complete mess of a simple distribution system.
If you are pushed, the PROview splitters sold by Toolstation aren't toobad but you will still take a 1dB hit on any splitter.
The full range of PROview splitters with a full specification, including an 862MHz range, can be found on pages 41 & 42 of Blake UK's pdf catalogue but I'm not impressed. Decent splitters should have maximum losses of 4dB (2-way), 8dB (4-way) and 11dB (8-way) that these splitters fail to meet.
Taylor Bros still sell 860MHz versions but, unlike Toolstation, you can't just pop round to your local branch for them.
