16-08-2017, 02:57 PM
Bit of a poser this one, not having much luck.
Due to the idiot government selling 4G airspace and putting it next to the television frequency in our locale I decided that a bit of an upgrade was needed. I took the original log periodic aerial with built in booster and moved it down the pole, pointing towards Crystal Palace, some 40 miles away and surprisingly a fantastic signal on all channels. On the very top I plonked a triax aerial with 4g rejector built in (supposidly) and that points to Midhurst some ten miles away.
Signal from Midhurst by the way is dire, the 4G hasn't helped either.
Signal from the old aerial feeds into a booster/splitter unit that puts the signal around the house. The b/s box also supplies power for the masthead amp built into the old l/p aerial and the new aerial has a masthead amp as well.
Now, having a lateral moment I thought it would be nice to get hold of a UHF switch. It would need to be able to switch between the two aerials whilst also being able to pass 12v DC power up to run the masthead amps regardless of which one was switched in.
Do you think I can find one on ebay, t'net etc.? Can I buggers.
So, throwing it out to the floor, any ideas?
Due to the idiot government selling 4G airspace and putting it next to the television frequency in our locale I decided that a bit of an upgrade was needed. I took the original log periodic aerial with built in booster and moved it down the pole, pointing towards Crystal Palace, some 40 miles away and surprisingly a fantastic signal on all channels. On the very top I plonked a triax aerial with 4g rejector built in (supposidly) and that points to Midhurst some ten miles away.
Signal from Midhurst by the way is dire, the 4G hasn't helped either.
Signal from the old aerial feeds into a booster/splitter unit that puts the signal around the house. The b/s box also supplies power for the masthead amp built into the old l/p aerial and the new aerial has a masthead amp as well.
Now, having a lateral moment I thought it would be nice to get hold of a UHF switch. It would need to be able to switch between the two aerials whilst also being able to pass 12v DC power up to run the masthead amps regardless of which one was switched in.
Do you think I can find one on ebay, t'net etc.? Can I buggers.
So, throwing it out to the floor, any ideas?
By definition the relay will pass the 12V as well as RF. I don't think a 50R impedance relay will do much damage in a 75R system as it's electrically pretty short at the frequencies of interest.
