Originally Posted by gring40
... we have an HD antenna, a fairly new TA-52 distribution amp,
Actually, you more likely have a newly purchased TA-52 amplifier, as I doubt that anyone has manufactured a new unit of that product in this century. The antenna business is notorious for selling "new, old stock". When I buy RG-11 crimp-on connectors, I'm sure they were made decades ago, and the MX-4 channel combiners that I grab whenever I stumble across any have never borne a manufacturing date any newer than 1992. I still use TA-52s on sit in a few places, but with old amplifiers, the mechanical adjustments, like gain potentiometers and the 10 dB attenuator and FM trap switches, can become touch sensitive, which is a problem you might have difficulty detecting without a responsive signal meter to detect their problems, should they ever arise.
a bank of 45-year-old splitters,...
I service a ten story hotel in Washington, DC where we are sending out signals on midband (120-174 MHz) and then superband and hyperband (216- to about 400 MHz) through five nice RG-11 branch cables, but they each split in the plastered ceiling and actually tilt over 20 dB after they each go through single, 2-way splitters that must have been manufactured 60 years ago when this building was built and they probably are VHF only. For now, I have five huge Blonder Tongue BIDA amplifiers, one on each line, to enable me to "muscle" enough superband signals through them, but when I tried diplexing in local broadcast UHF channels, they were a no-go. I've been in the master antenna system business for a long time, but I have never seen any splitters roll off abruptly above VHF frequencies the way these do. it would really behoove you to buy a cheap used signal meter on eBay for a hundred bucks (Sencore 1453 and 1453i are commonly available in that price neighborhood) because you won't always be able to reliably detect the incorporation of hidden splitters without oneEdited by AntAltMike - 11/11/13 at 1:55pm